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3020 Sub Probe Flow Transmitter User Manual

1. o 2 2 2 2 Controls and Indicators nc de wed ere Oa BSE ORR E MERLE REE NOE EN 2 2 2 2 1 Keypad Layout and Functions 0 0 0 0 ccc eens 2 2 2222 DISDISy exo Eee Rae ee LER es de diode eke dead hee Hinde hia as 2 3 D2 Power FATES 2 od ind oie o inv E SPLIT SOR EOS OER 2 3 2 9 VP POS RAMAN too redo mariner Adorn dev erent oils Bret ds babys andl mus toed mean be et Sul bvaptes ih bqu 2 3 2 3 1 Programming Overview llle re 2 3 233 2 sb OT Propran otes osos eter uec ovde aC ona rapere A SONA OL 2 6 2 3 3 Description of Program Steps 0 0 ce eens 2 7 2 3 4 Equations Used in Flow Conversion 0 000 cece eee eee 2 11 2 5 5 Default Prosram 552 gums gn Ee dee d e dre AS De Rio edd 2 11 2 4 Programming Examples rre Re ark av Cre e ava av Ce y Dens 2 13 2 4 1 Programming for a Parshall Flume lees 2 13 2 4 2 Programming for a Cipolletti Weir 0 0 0 ccc cee ee ee 2 15 2 4 3 Programming with the Equation Device 434 0 00 2 19 2 4 4 Programming Example Using an Equation 00000 ee 2 20 2 4 5 Rectangular Weirs with End Contractions esses eass 2 23 2 4 6 Programming Example for a Rectangular Weir with End Contractions 2 25 Section 3 Installation 3 1 General Comments on Installation 0 00 0 ec ee eee 3 1 3 1 1 Avoid Possibility of Submersion and Installation in Unsecured Locations 3
2. llle 5 5 5 2 Alignment of Grounding Point cele eens 5 5 5 3 Aluminum Cover and Interconnect Cables llle 5 7 5 4 Circuit Board with Aluminum Cover Removed eee eee 5 7 5 5 Component Layout of the CPU PCB eeeeeeee eee 5 14 3020 Flow Transmitter Table of Contents 5 6 Component Layout of the Terminal Board 2 0 0 cece eee 5 15 List of Tables 1 1 3020 Controls Indicators and Terminal Blocks Lus 1 5 1 2 3020 Flow Transmitter Technical Specifications llle 1 6 1 3 3222 Submerged Probe Technical Specifications 00 2 1 7 2 1 Equations Used in the 3020 llle 2 12 2 2 Values of N1 for Flow Rate in CFS 0 0 ee 2 24 2 3 Values of N2 for Flow Rate in CFS lese 2 25 3 1 Locating the Head Measuring Point 0 0 0 cece eee 3 17 4 1 3000 Series Wiring Instructions 0 0 0 ccc ce eens 4 3 Cri Hazardous Gases xs dede Ea a he ee RS Rd OG hos eta OS GE OOO As C 6 3020 Flow Transmitter Section I 1 1 Manual Organization 1 2 Description Figure 1 1 3020 Flow Transmitter Introduction The first section of the 3020 instruction manual provides a general introduction to the flow meter It includes a brief dis cussion of the organization of the manual an overall description of the flow transmitter and technical specifications The
3. 0 0 020 68 2500 014 Four Foot Probe Extension vc atv eto T Cee aa ee eae 24S See 60 2504 036 Submerged Probe Carrier Assembly Use with Isco Mounting Rings 60 3204 005 Mounting Rings Probe Mounting Ring for 6 pipes eis LRL ERE RR RG EU E ERREUR SOS 60 3200 007 Probe Mounting Ring for 8 pipe 0 0 ee ee eh 60 3200 008 Probe Mounts Rine for 10 pipe 2 259 03 Rx eee qb Pe awk ee ee GR OR eek 60 3200 009 Probe Mounting Ring for 12 pipe 64440065 va ook Pe E Uy 3E UE US 60 3200 010 Probe Mounting Ring for 15 pipe 0 0 ee ee ene 60 3200 011 Universal Mounting Ring for Pipes 16 diameter and larger Base Section with tabs for mounting up to five probes 0 0 0 eee eee 60 3004 171 DCISSORS ASSI Lusso tees ee eee d ata hte b du Cae UP D AE C d eee ee 60 3004 170 Extension TL 9 0 5 Licet quad Used acida Veces wala wipe ea eave desees shelter A 60 3004 172 Extension 22179 exci tud u ires ntis ais attri antis esu ie CM dE uL EE 60 3004 173 Extension 3 9 1 9 hs v oxi dut oe wena eee d Gd ORA es ete a dc de xt dos rae xe d etd 60 3004 174 Extension 4 41 5 2 dace sura So ADU QUU RMHETHEALU ee made quM depu ade Ea ee Ele 60 3004 175 M Note Universal Ring Assemblies will require a base and scissors section for all sizes Sizes from 21 to 80 will also require two or more extension sections A 6 3020 Flow Transmitter Appendix B Programming Worksheets The following is a workshe
4. PLUS OR MINUS This key is used to enter positive or neg ative numbers when programming an equation Yellow FUNCTION KEYS These keys are used to enter the program of the 3020 at various points of the programming sequence so the user may enter or change menu selections or numerical values Since these keys are tied to specific pro gramming steps of the flow transmitter they need not be described individually here Refer to Section 2 3 3 for the detailed descriptions of the program steps The flow transmitter display shows programming choices made by the user and after programming and installation are com plete displays the current flow rate and or level That is there are three operating modes for the display level flow rate or an alternation between level and flow rate The display may be viewed through the window of the flow transmitter s cabinet when the door is closed The display is a six digit seven segment backlit liquid crystal The letter H on the left side of the display indicates level or Head For improved legibility in low light con ditions the LCD is backlit If there is a power failure the LCD will go blank and the flow transmitter will cease operation Momentary power failures less than three seconds should not affect the operation of the unit as power stored in the filter capacitors will provide some carry over for a brief period of outage However if power is off long enough for the display to g
5. Section 3 Fire and Explosion Hazard Data Flash Point and N A Auto lgnition N A Flammability Limits in N A LEL UEL Methods Used Temperature Air 9o by Volume Extinguisher Dry chemical carbon dioxide and foam can be used Media Special Fire Water will generate heat due to the silica gel which will adsorb water and liberate heat Fighting Procedures Unusual Fire and When exposed to water the silica gel can get hot enough to reach the boiling point of water Flooding with Explosion Hazards water will reduce the temperature to safe limits Section 4 Reactivity Hazard Data STABILITY Conditions Moisture and high humidity environments Stable To Avoid JUnstable Incompatibility Water Materials to Avoid Hazardous Carbon dioxide carbon monoxide water Decomposition Products HAZARDOUS POLYMERIZATION Conditions None May Occur To Avoid Optional Indicating Silica Gel D 2 3020 Flow Transmitter Appendix D Material Safety Data Sheets Page 2 Section 5 Health Hazard Data PRIMARY ROUTES Inhalation Ingestion CARCINOGEN INTP OSHA OF ENTRY Skin Absorption Not Hazardous LISTED IN lARC Monograph Not Listed HEALTH HAZARDS Acute May cause eye skin and mucous membrane irritation Chronic Prolonged inhalation may cause lung damage Signs and Symptoms Drying and irritation of Exposure Medical Conditions Asthma Generally Aggravated by Exposure EMERGENCY FIRST AID PROCEDURES
6. 3 N1 4 999 to 4 999 5 N2 4 999 to 4 999 To Remainder of Program Step 14 Plotter Totalizer Zeros ZEROS TO RIGHT OF TOTALIZER 0 to 9 Step 15 Reset Plotter Totalizer RESET PLOTTER TOTALIZER TO ZERO Step 16 Display Mode DISPLAY OPERATION 1 FLOW 2 LEVEL 3 ALTERNATE FLOW amp LEVEL Step 17 4 20 mA Output 4 20 mA OUTPUT OPERATION 1 FLOW 2 FLOW W EVENT MARK 3 LEVEL 4 LEVEL W EVENT MARK Step 18 Adjust Level CURRENT LEVEL FT 71 0 to 10 0 M 0 31 to 3 05 Fisure 2 1 Simplified Flowchart Programming Flowchart for the 3020 2 5 3020 Flow Transmitter Section 2 Operation and Programming 2 6 2 3 2 List of Program Steps Following is a list of the program steps used in the 3020 along with the choices available or applicable range of values Fol lowing the list is a detailed explanation of the purpose for each step and the choices offered 1 Select Units of level measurement 1 Feet 2 Meters 2 Primary Device See list of devices above or refer to front panel label M Note Steps 2 5 are programmed only if 34 Equation is chosen in Step 1 N1 4 999 to 4 999 P1 0 1 to 3 0 N2 4 999 to 4 999 P2 0 1 to 3 0 Maximum Head in Feet 0 1 to 12 0 Flow Rate at Maximum Head 0 001 to 9999 Totalizer Scaling Number of counts totalized per hour of flow at maximum head 0 9 999 M Note Step 10 is programmed only if the flow tran
7. Service stations garages storage tanks houses Manufac tured gas sludge digestion tank gas electroly sis of water Rarely from rock strata Insecti cide and rodenti cide Simplest and Cheapest Safe Method of Testing Oxygen deficiency indicator CO ampoules Detectable odor at low concen trations Detectable odor at low concentra tions Detectable odor 1 Combusti ble gas indi cator 2 Oxygen deficiency indicator Combustible gas indicator Detector tube C 7 3020 Flow Transmitter Appendix C General Safety Procedures Table C 1 Hazardous Gases Continued Specific Explosive Likely Gravity Max Max Sare Range by Location Most ampie and Chemical Common Physiological Safe 60 8 Hour TN E Cheapest i or Vapor vol in air of Common Formula Properties p Min Exposure Exposure SMS Safe Method Density Limits Highest Sources ppm ppm of Testing lower upper Concentration as i ifi i i Max Max Explosive Range Likely Safe 60 Min Safe 8 Hour Exposure Exposure ppm oncentration Near bottom Coal gas but may be petro above bottomif leum airisheated and sewer gas highly humid Fumes from blast ing under some con ditions Sludge gas Irritant and poi sonous volatile compound Rot ten egg odor in small
8. Step 17 determines the operation of the 4 20 mA current loop output Examples of equipment which would be connected to the 4 20 mA current loop are the Isco 2410 Circular Chart Recorder or process equipment such as a chlorinator If the flow transmitter is already installed and has been pro grammed it is not necessary to completely re program the unit to enter any changes Instead simply select the yellow FUNCTION KEY where the change needs to be made and press ENTER PROGRAM STEP until the desired step 1s reached then enter the change Automatic Program Advance After the ENTER PROGRAM STEP key has been pressed the display will automatically advance to the next step and show the current choice or value entered for that step the process continues until the user has made selections for all steps necessary to complete the yellow FUNCTION KEY selected or presses the CLEAR ENTRY key twice to exit the program All programming for the 3020 can be done in the shop except for the ADJUST LEVEL step which must be done at the job site Steps 1 9 Press PRIMARY DEVICE Step 1 Select Units of Measurement Step 1 Units of Measure for Level 1 FEET 2 METERS Step 2 Select Primary Device 1 V NOTCH WEIR 18 PALMER BOWLUS 15 2 RECTANG WEIR W END 19 PALMER BOWLUS 18 CONTRACTIONS 20 PALMER BOWLUS 24 3 RECTANG WEIR W O 21 PALMER BOWLUS 30 END CONTRACTIONS 22 PALMER BOWLUS 48 4 CIPOLLETTI 23 TRAPEZOID LARGE 60 V 5 PARS
9. 3020 Submerged Probe Flow Transmitter Installation and Operation Guide Na TELEDYNE ISCO A Teledyne Technologies Company Y Part 60 3403 061 of Assembly 60 3404 058 Copyright 1990 All rights reserved Teledyne Isco Revision P February 2012 Foreword This instruction manual is designed to help you gain a thorough understanding of the operation of the equipment Teledyne Isco recommends that you read this manual completely before placing the equipment in service Although Teledyne Isco designs reliability into all equipment there is always the possi bility of a malfunction This manual may help in diagnosing and repairing the malfunc tion If the problem persists call or e mail the Teledyne Isco Technical Service Department for assistance Simple difficulties can often be diagnosed over the phone If it is necessary to return the equipment to the factory for service please follow the shipping instructions provided by the Customer Service Department including the use of the Return Authorization Number specified Be sure to include a note describing the malfunction This will aid in the prompt repair and return of the equipment Teledyne Isco welcomes suggestions that would improve the information presented in this manual or enhance the operation of the equipment itself Teledyne Isco is continually improving its products and reserves the right to change product specifications replacement parts schem
10. Figure 3 2 Stahlin Fittings Compression Bushings 3 2 3 Connection to a Power Source N WARNING The 3020 and its submerged probe level sensor are NOT APPROVED for use in hazardous locations as defined by the National Electrical Code Install the 3020 in NON HAZARDOUS areas only in compliance with the National Electrical Code or with local codes whichever authority has jurisdiction The 3020 requires a 120 or 240 volt 50 60 Hz alternating current power input Teledyne Isco recommends connecting the 3020 to its own separate branch circuit in the main circuit breaker panel or local branch panel Label the breaker with its use A 15 Ampere breaker is sufficient A separate cutoff switch next to the main panel clearly labeled is also acceptable In any case connect the flow transmitter to the commercial power 3 3 3020 Flow Transmitter Section 3 Installation 3 4 3 2 4 Voltage Selector Switch 3 2 5 Wiring the Submerged Probe supply so that accidental shut off or shut off brought about by the failure of other equipment does not occur Mark the circuit for the flow transmitter so no one connects any other equipment to it later Do not attach the flow transmitter to a circuit which already feeds other equipment Do not connect the 3020 toa circuit controlled by an ordinary wall switch if a switch is nec essary use a key switch instead A slide switch above TS1 selects 120 or 240 volt operation Make sure this swit
11. P1 1 5 P2 2 5 Therefore the following equation would be programmed into the flow transmitter for a four foot rectangular weir with end con tractions and a maximum head of one foot Q 37 67 H 3 767 H CFS For your convenience the values for N1 and N2 for various crest lengths and maximum heads are provided in Tables 2 2 and 2 3 Note that these values are for flow rates in CFS Again if a flow rate other than CFS is desired it is necessary to convert these values from CFS to the desired units of measure Table 2 2 Values of N1 for Flow Rate in CFS Head Crest Length in Feet 1 00 1 50 2 00 as ao Jao eo em Jeo 13477 1766 12 355 2943 3532 4 709 5887 7 064 19 4149 1177 oz 3244 4326 5407 6489 8652 1081 1298 1730 21 63 10 6 6660 18 325 9990 1332 1665 1998 2664 33 30 um we eee ese Joar ms mas jest m pes jer js fon anon ese eo we je js ma wm am js js ws wm ao we me uso aco 1 eta so 1 dee 2 24 3020 Flow Transmitter Section 2 Operation and Programming Table 2 3 Values of N2 for Flow Rate in CFS Mess 075 e or oam ose aa ss az eser toss am ara 2 4 6 Programming Example for a Rectangular Weir with End Contractions The following example will show how to enter an equation 34 for a rectangular weir with end contractions This example will use a 6
12. R dcm o RT TH B ALMA ADR M SP ot et OF RE rr 1 bee acr to d Due oj nm TOD AVE f 3X l0 ain Te m TRAPED SF of U amp iP rr Sed ee D ie acd ere ud i Pea Nr REA ou fete Om RILAA UO am J Ba eaL LT wr ELLA a ERGP ti nmm Padi mI oe nibus oe ege if toe pie hw hit B WE tede i w Ah TEP i MEA CO Ge COUR oen rg FLL CTF SET LOTTE Te ee US Lom F E wur at Preaa or xz r 4 Pd dm o O5 T B uL om s ERIT LIS ar Wi ROMIATICA ERE EUG ol ILLNM rar Sepa 7 ru Up eid TR b Ca E E psg weil DUO VERAT Cm P Dn Ho ILI 1l ue ty OM Pia Um e akp eee l wows 3 hw aep IT EP Be MITT ira FS Btw ik A we E RTEPS sy cree m AER IE dm ma DUTPUT DERE PCR qw nauis ee i aipa j Chad dl On e C naim I mam Hp a mme INL AUCH WENT ttm m EE ie pip art SU de pe ELE pd emi l e PR A ia a Coin m e ifi tu ai pp hi RD EeQ sos ze Fiii Mor ia d d dad CH Chey Ctm TRIER Bom rae ee E F is dide FEL T ae GPIEEG Jede dd iN hy MIN Tkp m AC ew A F Figure 1 3 3020 Control Panel 1 4 3020 Flow Transmitter Section 1 Introduction Figure 1 4 3020 Interior Terminal Blocks Table 1 1 3020 Controls Indicators and Terminal Blocks omes Faction Keypad 22 Key 6 column matrix User programs flow transmitter through series of keystrokes prompted by messages on the display Display 6 digit 7 segment liquid crystal display LCD Prompts user through program setup displays current menu selectio
13. The 4 20 mA current output is an industrial control standard and is used to provide an analog variable signal reflecting changing levels or flow rates to related equipment which responds to the changing conditions measured by the flow trans mitter This operation can be compared to a lamp controlled by a dimmer The lamp can burn at various levels of brightness between fully off and fully on Contrast this with equipment con trolled by being turned completely on or off Step 18 Adjust Level This step allows for the adjustment of displayed level in the 3020 There are various ways to calibrate the ultrasonic level sensor after it has been installed depending 2 3 4 Equations Used in Flow Conversion 2 3 5 Default Program 3020 Flow Transmitter Section 2 Operation and Programming on the device used Then measurement from the zero level point of the primary device to the surface of the flow stream is done very carefully to determine the level in the flow stream Commonly this 1s done by using a measuring staff You may enter this level into the 3020 by adjusting the displayed level with the up and down arrow keys or by entering the desired value with the numeric keys The flashing letter H denotes head level M Note If the flow transmitter shows negative level or flow rate during initial setup and displays codes with EE on the left side of the display the level should be adjusted Step 18 to a positive value and then
14. The mounting hole must be aligned with the grounding point Figure 3 5 Alignment of Grounding Point 3 10 Circular Channels 3 10 1 Spring Rings 3 12 Consult your Isco Mounting Rings Installation and Oper ation Guide for detailed hardware information The following sections describe sensor installation using the two options available for mounting sensors in pipes or round bot tomed flow streams For pipes up to 15 38 1 cm in diameter stainless steel self expanding mounting rings Spring Rings are available For pipes larger than 15 in diameter Teledyne Isco offers the Scissors Rings Universal Mounting Rings To install a spring ring you compress the ring slip it inside the pipe and then allow it to spring out to contact the inside diameter of the pipe The inherent outward spring force of the ring firmly secures it in place A typical self expanding mounting ring with a probe mounted on it is shown in Figure 3 6 These mounting rings are available for use in pipes with inside diameters of 6 15 2 cm 8 20 3 cm 10 25 4 cm 12 30 5 cm and 15 38 1 cm The Teledyne Isco part numbers for the various size mounting rings available are listed in Appendix B These part numbers include not only the ring but also the mis cellaneous hardware necessary to mount the sensor on the ring N CAUTION Always wear leather gloves when handling the rings either type The metal is finished but there is still a
15. To prevent damage to internal components keep the lid tightly latched at all times except when it is necessary to access the front panel to change the program Do not operate the flow trans mitter routinely with the case open Doing so will expose the internal components to dirt and moisture This is particularly true when the flow transmitter is installed outdoors or in wet locations Do not operate the flow transmitter with the pro tective cover over the wiring removed This creates a serious shock hazard 5 1 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 2 Regenerating the 5 2 Desiccant Cartridge 5 2 1 Determining Condition of Desiccant 5 2 2 Identify Desiccant 5 2 3 Regeneration Procedure The 3020 includes a desiccant cartridge as part of the instal lation This is a plastic tube filled with particles and attached to the flow transmitter or Quick Disconnect Box with a clamp and a silicone rubber tube The purpose of the desiccant cartridge is to prevent any moisture from entering the reference port vent tube for the submerged probe On flow transmitters equipped with the pig tailed M S connector the desiccant cartridge is mounted on the bottom of the flow transmitter case Installations which use the Quick Disconnect box will have the desiccant car tridge mounted on the Quick Disconnect box rather than at the flow transmitter Either way the desiccant cartridge requires inspection and perio
16. 3020 Flow Transmitter Table of Contents 5 4 3 Fuse Replacement 2 is dius odo oet ae eee do or diee doi oe dieta 5 8 5 5 Display Warnings oss suce xe opt Spe Ron SObeedus Ken SG SASS eo DR NOR Pg REE RUE 5 8 5 D oltware Reset sorsan FEWER VADE PO RwE CRM SUR IURE E CR E A Pd os 5 8 5 6 Hints on Troubleshooting 0 00 ce s 5 8 D 7 IP Serious Problems Occur 52225 de eee ORES ie BORO C ERU RE FREUE AUS 5 9 5 7 1 Preliminary Troubleshooting Steps 0 0 cece ee eens 5 9 5 7 2 Precautions for Servicing AC Powered Equipment 5 10 5 7 9 Precautions for Servicing CMOS Circuitry llle 5 11 9 424 Gall TOP ASSISTANCE is aer Gan Ra wot an ta eo A es ee d 5 12 DEO Ceot BOXES evel WS Ee Ge ie PIC eb Bibi Ba oi ed a UE ou i des 5 13 ool Terminal Board 4 24 42 due gt atic eu adu sone ke Ode eee edes 5 13 0 02 CPEB d 66342401 Ge sed Weide eeteiwa eb Rd bitte rep erie 5 13 Appendix A Replacement Parts and Accessories A 1 Replacement Parts List 145 554a dob dudo bbe bed res tendo etr bax A 1 A 2 Accessories and Spare Parts 4 4044 were bore Cares E rane ded A 5 Appendix B Programming Worksheets Appendix C General Safety Procedures G L Practical Safety Preeautiols 4 xeu uy do ea A CE UI ep b C ecd RO es C 1 C 2 Lethal Atmospheres in Sewers esee C 4 Co Hazardous ASC aq oo shea aE OE aos a a ee Mawes Hak eA C 6 Appendix D Material Safety Data Sheets DOT NONI ON oe Sek ress
17. Press 1 12 1 Press ENTER 10 The unit of measure for totalized flow was cubic feet selec tion 1 on the front panel press 1 GO Press ENTER 11 Totalized flow in Step 9 was hundreds of cubic feet Since hundreds would have two zeros to the right of the totalizer 14 E Press ENTER 3020 Flow Transmitter Section 2 Operation and Programming 12 To reset the totalizer on the remote plotter Isco Model 2312 to O press 1 15 Press ENTER XXXX Flow Rate EC 13 Press DISPLAY To alternate between level and flow rate 16 3 Press ENTER XXXX Flow Rate H XXXX H Height or level 14 Press 4 20 MA OUTPUT to select the information trans mitted To transmit flow rate with event mark press 2 17 2 Press ENTER XXXX Flow Rate 15 Press ADJUST LEVEL to set the current level in feet To set the liquid level to 1 5 feet press 1 decimal 5 H 1 5 The H will flash 2 18 2 4 3 Programming with the Equation Device 34 3020 Flow Transmitter Section 2 Operation and Programming Flow Rate This equation is used to calculate flow in applications where the standard devices programmed in the 3020 are not used The special equation is also used with rectangular weirs with end con tractions if a more accurate level to flow rate conversion than that programmed into the 3020 is required When designing the 3020 the coefficients of the flow equation for the rectangu
18. condition is approximately 10 mA In alarm condition if both relays are operated current increases to 190 mA LEAST Geib Dist 3 s WUEWALLY CLONED j SOOM ALL OPER E COM m U The High Low Alarm Relay Box contains a microprocessor that compares serial data from the 3020 to set values for high and low alarm trip points for the relays Rotary switches inside the alarm box set the trip points There are two rotary switches for each limit The switches labeled MSD most significant digit determine the first digit of the percentage entered as a set point For example if you want to enter a low limit of 18 you would set the LOW LIMIT MSD switch to 1 Then you set the LOW LIMIT LSD least significant digit switch to 8 Use the same method to program the HIGH LIMIT switch Suppose you want to set the high limit at 79 You would set the HIGH LIMIT MSD switch to 7 and the HIGH LIMIT LSD switch at 9 Mount the alarm box with the 2 slotted holes in the stainless steel plate on the back of the case The slots accommodate up to 3 16 hardware Drill 2 mounting holes on 3 centers Threaded holes in the box allow the use of either 4 2 conduit fittings or Stahlin fittings see Section 3 2 2 The alarm box is suitable for use in damp locations but do not install it where there is possi bility of submersion In low temperature ambients install the alarm box indoors or in a heated location The minimum oper ating temperature of the m
19. mation is available from the manufacturer of the primary mea suring device used The information 1s also available from tables published for specific devices in the sco Open Channel Flow Measurement Handbook 2 7 3020 Flow Transmitter Section 2 Operation and Programming 2 8 If the value you must enter is greater than 9 999 you must round it off and reduce it to a number which can be displayed by the flow transmitter For example 32 537 GPM 1s greater than the four digits available on the display So first we round the number to 32 540 and then enter the four most significant digits into the flow transmitter 3 2 5 4 To show the overflow from the display we attach a 0 label to the right of the display to indicate the value displayed is in tens of gallons rather than gallons Finally attach a label for the appropriate units in this case GPM If the installation includes a 2312 Plotter these same flow rate units will be entered in Step 11 and the number of zeroes will be entered in Step 12 For the example of 32 537 GPM you would enter 1 GPM in Step 11 and 1 in Step 12 Step 9 The flow transmitter will ask for scaling for the flow totalizer This 1s the number of counts on the totalizer per hour of flow at maximum head The value entered ranges from 0 to 9 999 The selection of the number of counts per hour 1s based on flow at maximum head so the actual number of counts may be much lower If the installation incl
20. 1 3 1 2 Location of the Flow Transmitter llle 3 2 Dio Portable Operation i5 d rcs eer aue ub Bc UE hac gen ecw awe rac R 3 2 2 2 General Wiring Comments sse sS ae a Ce Le a ee ee E 3 2 3 2 1 Mounting and Wiring ee ee eee eens 3 2 9 2 2 baa PUTIN OS 4 0 26 es acide dos Ste Roo doo a aa lag ace SE lo 3 3 3 2 9 Connection to a Power Source 0 0 0 ce eee eee eens 3 3 3 2 4 Voltage Selector Switch 0 0 ce eee eens 3 4 3 2 5 Wiring the Submerged Probe 0 0 0 cee eens 3 4 322 6 Distances Up to 75 Beet usur x cio eU e ode e OP aw Cen n PEO S 3 5 3 3 Using the Quick Disconnect Box 0 0 0 0 cc ce eens 3 6 3020 Flow Transmitter Table of Contents Ot E kereronce Porh cagata a yi esa hati bi te dua ee tee ee oe 3 6 3 3 2 Mounting the Quick Disconnect Box 0 0 cece eens 3 6 3 3 38 Preparing Shielded Cable llle 3 7 3 3 4 Connecting the Level Sensor Cable to the QD Box 3 7 3 3 5 Connecting the Cable from the QD Box to the 3020 3 7 3 4 Connection to a Sampler s eriet ocu de ade oer anc aan Ge es EOS Reo o 3 8 3 4 1 Sampler Located Within 22 Feet 0 0 0 0 ccc eens 3 8 3 4 2 Sampler Located Over 22 Feet cele 3 8 3 4 38 Connection to a Non Isco Sampler eee 3 8 3 5 Connection to Other Equipment 0 0 00 cc ee eee eee 3 9 3 0 palety GONSIGErAtIONS 29
21. 3 33 Hx pe AHORA pe BS SO ee RA e 9 9 3 7 Installing the Submerged Probe 0 0 0 0 cee ee eee 3 9 3 8 General Mounting Considerations llle 9 9 3 8 1 Functionality Under Solids 0 0 0 00 eee 3 10 3 8 2 Minimum Reliable Detection Level 0 0 0 0 eee eee 3 11 3 9 Submerged Probe Nose Sections 0 0 ce eee eee nes 3 11 3 9 1 Attaching the Nose Section 0 0 00 0c cece ee eens 3 12 o I0 Circular Channels 24 45 24550 205 pan eee RIA Sene SS EE 3 12 OUO L MOPS RIDES d o2 eati Ed aee Eod ation Kleid Rake oad Maes oad a 3 12 9 10 2 OCIS S INS acca ate ona eee aa ERE aa Ropa ee g 3 15 3 11 Other Mounting Techniques 0 0 00 ccc eee ees 3 16 3 11 1 Rectangular and Trapezoidal Channels 005 3 16 3 11 2 Stilling Wells or Streams with Very Low Velocity 3 17 3 11 3 Securing Probe with a Weighted Plate 0 000 3 17 oll 4 Weirs and FIGMeS 2 3 3e ES BER Oe Me REM eee Os RA NIE S 3 17 3 12 Completing the Probe Installation 0 0 00 0 0 ec eee eee 3 19 Section 4 Options and Accessories 4 1 4 2 4 3 4 4 4 6 High Low Alarm Relay Box 0 0 0 0 ccc cc en RI 4 1 4 1 1 Setting the Limit Switches lees 4 2 4 1 2 Installation of the Alarm Box eeeee RII 4 2 4 1 3 Wiring the Alarm BO 1 422 RR REIR IRR ae ew ERR AUR RAE 4 3 Connection to External Serial Devices ll
22. Circular Chart Recorder N CAUTION All wiring between the 3020 Flow Transmitter and related equipment must conform to the National Electrical Code or local codes whichever authority has jurisdiction You should make installations suitable for wet locations N WARNING Hazard of electrocution You can be killed if you accidentally contact the AC power supplied to the 3020 Do not attempt to wire or troubleshoot while the flow transmitter is live Disconnect power at the breaker panel or cutoff switch before performing any work on the flow transmitter Teledyne Isco offers an alarm box that monitors flow rate infor mation provided by the 3020 see Figure 4 1 Relays trip when flow rate falls below or exceeds preset limits High and low set points are user selected and range from 0 to 99 in 1 incre ments Output from the unit is the switching of form C SPDT relay contacts Two relays are provided one for high alarm and the other for low The availability of form C contacts both NO normally open and NC normally closed contacts means that you can either turn loads on or off Relay contacts are rated for 3 amperes maximum at 24 volts AC or DC The unit operates on 12 3020 Flow Transmitter Section 4 Options and Accessories Figure 4 1 High Low Alarm Relay Box cover removed 4 2 4 1 1 Setting the Limit Switches 4 1 2 Installation of the Alarm Box VDC supplied from the 3020 Current consumption in standby
23. Handbook The totalizer will be set to totalize in gallons and the 4 20 mA output will be set up to transmit level with 100 percent equal to 1 5 feet Assume that the level which would be measured with a staff gauge or other measuring device is 0 75 feet Attach the GPM sticker to the right of the display Calculations for example 1 The totalizer will read out in gallons To find the flow per hour at maximum head multiply the flow 1n GPM by 60 1754 gallons per minute x 60 minutes per hour 105 240 gallons per hour The totalizer scaling value can only be a value from 0 to 9 999 Since 105 240 is larger than 9 999 we divide by 100 105 240 100 1 052 1 Press PRIMARY DEVICE 2 Select units of measure for level To select feet press 1 Press ENTER 9 Select the primary device from the list shown on the front panel To select a 6 inch Parshall Flume press 8 2 8 Press ENTER 4 Enter the maximum expected head in feet For this exam ple press 1 decimal 5 Press ENTER 2 13 3020 Flow Transmitter Section 2 Operation and Programming 5 Enter the flow at maximum head 1754 GPM Press 1 7 5 8 1 54 Press ENTER Place the GPM label to the right of the display 6 To enter the totalizer scaling calculated above press 1 0 9 1052 Press ENTER The totalized flow in gallons would be the totalizer value x 100 so attach two 0 labels and the GAL label to the right of the displa
24. Material Safety Data Sheets This appendix provides Material Safety Data Sheets for the des iccant used by the 3020 Flow transmitter Teledyne Isco cannot guarantee the accuracy of the data Specific questions regarding the use and handling of the products should be directed to the manufacturer listed on the MSDS D 1 3020 Flow Transmitter Appendix D Material Safety Data Sheets Material Safety Data Sheet Indicating Silica Gel Identity Trade Name as Used on Label formerly Multiform Desiccants Inc Address 325 Harlem Road CAS Number Buffalo NY 14224 Phone Number For Information 716 824 8900 Date Prepared July 6 2000 Emergency Phone 716 824 8900 Prepared By G E McKedy Number Section 1 Material Identification and Information Components Chemical Name amp Common Names ACGIH Hazardous Components 1 or greater Carcinogens 0 1 or PEL TLV RECOMMENDE greater D total dust total dust gt 2 0 Cobalt Chloride 0 05mg m 05mg m TWA cobalt Cobalt TWA metal dust amp fume Non Hazardous Ingredients aec TOTAL Section 2 Physical Chemical Characteristics Boiling Specific Gravity 2 1 Point H20 1 Vapor Pressure Melting N A mm Hg and Temperature Point Vapor N A Evaporation Rate N A Density 1 Air 1 Solubility Insoluble but will adsorb moisture Water Not reactive but will adsorb moisture in Water Reactive Appearance Purple crystals no odor and Odor
25. Most Common Sources Sewers chemical feed rooms Industrial wastes varnish solvents An insecti cide Simplest and Cheapest Safe Method of Testing Detectable odor at low concentrations Combustible gas indicator Combustible gas indicator Carbon Dioxide Carbon Monox ide Carbon Tetra Chl oride Formal dehyde Hydrogen Hydrogen Cyanide Chemical Formula CO Common Properties Asphyxiant Col orless odorless When breathed in large quanti ties may cause acid taste Non flammable Not generally present in dan gerous amounts unless an oxygen deficiency exists Chemical asphyxiant Col orless odorless tasteless Flammable Poisonous Heavy ethereal odor Irritant Yel low green color Choking odor detectable in very low concentra tions Non flam mable Colorless pun gent suffocating odor Volatile solvent Colorless Odor noticeable at 0 0396 Flamma ble Simple asphyxi ant Colorless odorless taste less Flammable Faint odor of bit ter almonds Colorless gas 3020 Flow Transmitter Appendix C General Safety Procedures Table C 1 Hazardous Gases Continued Specific Gravity or Vapor Density Air 1 Physiological Effect Cannot be endured at 10 more than a few minutes even if subject is at rest and oxygen content is normal Acts on respiratory nerves Combines with h
26. Seek medical assistance for further treatment observation and support if necessary Eye Contact Flush with water for at least 15 minutes Skin Wash affected area with soap and water Contact Inhalation Remove affected person to fresh air Ingestion Drink at least 2 glasses of water Section 6 Control and Protective Measures Respiratory Protection Use NIOSH approved dust mask or respirator Specify Type Protective Light cotton gloves Eye Protection Safety glasses Gloves VENTILATION Local Exhaust Mechanical General Special TO BE USED Other Specify Other Protective None Clothing and Equipment Hygienic Work Avoid raising dust Avoid contact with skin eyes and clothing Practices Section 7 Precautions for Safe Handling and Use Leak Procedures Steps to be Taken if Material Sweep or vacuum up and place the spilled material in a waste disposal container Avoid raising dust Is Spilled Or Released Waste Disposal Dispose in an approved landfill according to federal state and local regulations Methods Precautions to be Cover promptly to avoid blowing dust Wash after handling Taken In Handling and Storage Other Precautions and or Special Keep in sealed containers away from moisture The silica gel will readily adsorb moisture Hazards Optional Indicating Silica Gel 3020 Flow Transmitter Appendix D Material Safety Data Sheets D 4 Fi E 3 MULTISORB NY Multisorb Techn
27. T1 primary F1 a 2 Amp slow blow fuse protects the entire circuit C1 C2 L1 and L2 provide transient suppression Tran sistor Q1 drives the beeper The relay provides flow pulses to the sampler The remainder of the board essentially carries logic level signals from the main CPU board to the various terminals on TS2 and TS3 U11 is the microprocessor that controls the rest of the board and performs level and flow calculations The submerged probe transmits pressure to the 3020 as a voltage that is proportional to pressure which 1s also proportional to depth U3 converts this voltage to a digital number which is sent to the microprocessor This number is used by the microprocessor to calculate the level and the flow rate The event mark and bottle count are input to U4 and from there go to U11 the microprocessor U6 is an EEPROM Electrically Erasable Programmable Read Only Memory used to store information so it will not be lost when the power is turned off U2 is used to de multiplex keyboard information and decide which key has been pressed 5 13 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting U14 and U10 are optocouplers used to optically isolate the 4 to 20 mA current loop from the rest of the electronics U9 converts the serial data coming from U14 into parallel data for U8 which is a D to A converter U7 amplifies the output of the D to A converter and shifts the level of the output so it is referenc
28. almost certain sign of trouble Check to see there is no abnormal current draw in part or all of the circuitry Abnormal current draw will usually be indicated by the noticeable overheating of a voltage regulator current limiting resistor or some other part of the circuit e Make sure the crystal oscillator is running and at the proper frequency The 3020 is a low voltage DC powered device and hazardous voltages are not present on the CPU board However the unit converts power from 120 or 240 VAC to the DC used to run the flow transmitter As a result hazardous voltages are present on the 3 terminals of TS1 and some other places Because of the shock hazard Teledyne Isco suggests the following e Use a 1 1 isolation transformer An isolation transformer separates the power needed for the flow transmitter from the commercial power supply relieving the danger of electrocution from accidental grounding Such transformers are available from electrical and electronic supply houses in various sizes Regulated versions are even available A 100 VA rating is sufficient for working on the 3020 Any knowledgeable technician can also create an isolation transformer by connecting two identical transformers voltage and VA rating back to back You should still be very careful however because the isolation transformer only isolates you from the grounded AC system The voltage coming out of the isolation transformer is hazardous easily carryi
29. also install the probe in rectangular channels by bending a mounting ring to fit the channel Attach the ring to the channel wall with studs Consult your Isco Mounting Rings Installation and Operation Guide for more information Figure 3 10 Isco Rectangular Mounting Plate 3 16 3020 Flow Transmitter Section 3 Installation 3 11 2 Stilling Wells or In flow streams with a minimal flow velocity or in a stilling well Streams with Very Low simply attach the probe to a weighted plate and submerge the Velocity plate in the stream or stilling well 3 11 3 Securing Probe witha In situations with a minimal flow velocity for example in a Weighted Plate stilling well you can simply attach the probe to a weighted plate and submerge it in the flow 3 11 4 Weirs and Flumes The 4220 Flow Meter is generally used with some type of primary measuring device such as a weir or flume The placement of the submerged probe in the primary device 1s deter mined by the type of primary device You can use one of Isco s mounting rings to install the probe in many weirs and flumes If the mounting ring are not suitable you must build your own mounting hardware Figure 3 4 shows the dimensions of the probe for your reference when building your own hardware Figure 3 11 shows the probe installed in several primary devices Certain flume manufacturers produce flumes with built in cav ities for Isco s submerged probe Contact the flume manufacturer for det
30. answer all the questions associated with select ing a primary device This should stabilize the display The equations used in the flow conversions built into the 3020 Flow Transmitter are shown in Table 2 1 For those primary devices for which the flow conversions consist of data only Palmer Bowlus flumes H flumes and Trapezoidal flumes the equations used are approximations which fit the manufacturer s listed data within 1 of full scale flow rate If you desire to use level to flow rate conversions other than those built into the flow transmitter 434 equation should be selected 1n Step 1 Section 2 4 3 has a discussion of the use of the equation followed by two programming examples including a rectangular weir with end contractions You will program the flow transmitter with selections from the menus appropriate to your particular installation When the flow transmitter is shipped there is already a default program in memory which was used to test the unit Understand that this is only an example program to allow testing of the unit as it is man ufactured It is not intended to fit any particular application 3020 Flow Transmitter Section 2 Operation and Programming Table 2 1 Equations Used in the 3020 Type and of Device Flow Equation 2 Rectangular Weir Q K 1 034H 0 034H with End Contractions see Section 2 4 3 3 Rectangular Weir Q KH without End Contractions 4 Cipolletti Weir 5 13 Parshall F
31. cee Ls ein A Re a ee ae 68 3020 012 Watertight Cord Grip Fittings Stahlin Fittings For 0 187 to 0 250 diameter cable 1 teen nen E 209 0076 03 For 0 250 to 0 312 diameter cable 1 0 ee eee eens 209 0076 04 For 0 312 to 0 3 5 diameter cable ois ovis tie Lev Ee PRO Re kB eRe SEA 209 0076 05 For 0 375 to 0 497 diameter cable x vou 88 amp CGAL ARS OE SS BRET ESRC Ee OER 209 0076 06 For 0 437 to 0 500 diameter cable ose band e ER wae eae eS 209 0076 07 For 0 500 to 0 562 diameter cable ota ee Ma SE PEGE Tee Re RES SU 209 0076 08 AC Power Cord includes watertight cord grip fitting lesen 68 2410 001 Isco Open Channel Flow Measurement Handbook lees 60 3003 041 Submerged Probe Standard Nose Section 0 0 0 cc cece eee eens 60 2503 086 Submerged Probe Slanted Nose Section 0 0 0 cc ee eee eee eee 60 2503 097 Flume Probe Cap a d ie horse qo eed oo ee ive dears De d mid d quasi RS we get 60 2503 105 Submerged Probe Mounting Ring 6 diameter pipe 0 02 68 2500 010 Submerged Probe Mounting Ring 8 diameter pipe 0 0 00 68 2500 011 A 5 3020 Flow Transmitter Appendix A Replacement Parts and Accessories Submerged Probe Mounting Ring 10 diameter pipe 000 ee eee 68 2500 012 Submerged Probe Mounting Ring 12 diameter pipe 0 0 020 cee eee 68 2500 013 Submerged Probe Mounting Ring 15 diameter pipe
32. coming out of the 3020 cabinet Make sure the connectors are threaded tightly together The allowable distance between the flow transmitter and the submerged probe is increased to 75 feet 22 8 m 1f the optional extension cables are used These cables available in 25 and 50 foot 15 2 lengths have mating M S connectors at the ends similar to the M S connector on the submerged probe cable Attach the connector on the extension cable to the M S connector at the flow transmitter Attach the other end of the cable to the connector on the submerged probe cable Coil extra cable neatly and leave it by the flow transmitter Do not let extra cable dangle in the flow stream where it could become tangled or cause clogging as a result of backing up debris 3 5 3020 Flow Transmitter Section 3 Installation 3 3 Using the 3 6 Quick Disconnect Box 3 3 1 Reference Port 3 3 2 Mounting the Quick Disconnect Box M Note The maximum distance between the flow transmitter and the submerged probe is 75 feet using extension cables This is because the probe s reference port air tube must vent to the atmosphere Do not cut these cables to length or attempt to splice them together Do not attempt to remove or mod ify the M S connectors on the cable ends If it is necessary to exceed 75 feet you must use the Quick Disconnect Box Option 2 only For distances over 75 feet 22 8 m you must use the Quick Disconnect box You must also use the Quick
33. compatible device The flow transmitter contains microprocessor controlled circuitry to make the computations necessary to calculate level and flow rates from the signals produced by the ultrasonic level sensor store programming instructions from the user and operate the display A backlit alphanumeric liquid crystal display LCD is provided both to show level and flow rate information and to prompt the user in programming the flow transmitter during initial set up or subsequent program changes Other equipment which may be used with the 3020 connects to the barrier blocks mounted on the power supply board in the bottom section of the flow transmitter s case The submerged probe is mounted in the flow stream and mea sures liquid level by changing output in response to changes in hydrostatic pressure placed on the submerged probe s transducer by the flow stream The submerged probe consists of an enclosure which contains an IC integrated circuit differential pressure transducer This transducer provides an output signal which changes proportionally to the pressure placed against it by the flow stream 2 1 3020 Flow Transmitter Section 2 Operation and Programming 2 1 3 Transducer Operation 2 1 4 Amplifier 2 2 Controls and 2 2 Indicators 2 2 1 Keypad Layout and Functions The transducer in the submerged probe contains a resistance bridge on a thin silicon diaphragm Pressure against one side of this diaphragm causes it
34. ene et eB een ee sec CUP D 1 List of Figures 1 1 3020 Flow Transmitter eee RR eens 1 1 1 2 Submerged Probe Level Sensor shown with standard tip 1 3 hes BOZO Control Panel 2 iin Gard 6 50 Le Ree y oa ere X ene e qos obe x ente ara 1 4 1 4 3020 Interior Terminal Blocks lees 1 5 2 1 Simplified Flowchart Programming Flowchart for the 3020 2 5 3 1 View of Case Latch Showing Lock Shackle 0 0 0 0 000085 3 1 3 2 Stahlin Fittings Compression Bushings 0 0 e eee eee eee 3 3 3 3 Quick Disconnect Box cover removed lee 3 5 3 4 Submerged Probe Dimensions 0 0 0 0 cc ee ee eens 3 10 3 5 Alignment of Grounding Point 0 0 eens 3 12 3 6 Sensor Installed on a Spring Ring 0 ee ee 9 13 3 0 Spring Rine Pr paration erriren Sn ek x ade asd gor Co atc De P e Ss 3 14 3 8 Mounting Ring in a Round Pipe 0 0 00 ce ee ee eens 3 14 3 9 Universal Mounting Ring Adjustment 0 0 0 0 cece ee 3 16 3 10 Isco Rectangular Mounting Plate 0 00 0 0c eens 3 16 3 11 Typical Primary Device Installations 0 0 0 0 0 cee eee 3 18 4 1 High Low Alarm Relay Box cover removed 0 0 00 e cee eee eens 4 2 4 2 Interconnection of 3020 and Alarm Boxe s cee eee eee eee 4 4 2 9 lemote Tobalizet acq mere zd Wee ERI EUN a RENS ERE DE S 4 5 5 1 Warning Disk Inside Probe
35. linearity repeatability and hysteresis but does not include temperature coefficient Compensated Temperature Range 32 to 122 F 0 to 50 C Temperature Error over compensated 0 1 to 4 0 ft 0 03 to 1 2 m 0 005 ft per degree F temperature range 4 0 to 10 0 ft 1 2 to 3 1 m 0 007 ft per degree F 1 7 3020 Flow Transmitter Section 1 Introduction 1 8 3020 Flow Transmitter A Section 2 Operation and Programming 2 1 Theory of Operation 2 1 1 3020 Transmitter 2 1 2 The Submerged Probe This section of the manual contains detailed information on the operation controls and indicators programming and set up pro cedures for the flow transmitter Operating examples are also provided Following is a description of the overall operating theory of the flow transmitter When measuring flow rate the 3020 is nor mally used with a primary measuring device weir or flume or other open channel flow arrangement where a known rela tionship exists between level and flow rate The level measuring device is a submerged probe which measures the liquid level in the flow stream The flow transmitter electronically converts the level reading into a properly scaled flow rate value The flow transmitter also provides standard flow related output signals to be used for e Flow proportional sampler pacing e Recording flow rate information on an external printer plotter or circular chart recorder e Connection to a 4 20 mA
36. may be used with the 3020 Flow Transmitter These devices are discussed in detail in Section 4 Among these devices are e Remote Totalizer e 2410 Circular Chart Recorder e High Low Alarm Relay Box While the 3020 Flow Transmitter will generally be installed above ground in a safe environment the location of the sub merged probe may be in a sewer or manhole Before installing the probe in such a location review the following safety infor mation In field installations of flow transmitters and associated equipment the safety of the personnel involved is the foremost consideration No project is so important or deadline so critical to justify the risk of human life See Appendix C for safety proce dures for working in and around manholes and sewers N WARNING The 3020 Flow Transmitter has not been approved for use in hazardous locations as defined by the National Electrical Code The following sections describe installation of the submerged probe The first section presents general mounting consider ations common to all submerged probe mounting techniques The following sections describe probe installation using the two systems available for mounting the submerged probe in pipes or round bottomed flow streams For pipes up to 15 inches 38 1 cm in diameter spring stainless steel self expanding mounting rings are available For pipes 18 inches in diameter and larger Teledyne Isco offers the Universal Mounting Ring For use in simi
37. other heat resistant container Refill the cartridge with the extra des iccant provided and replace the end caps The filters in the end caps keep pieces of the desiccant from falling out of the cartridge Clean the filters periodically using ordinary dish soap and water then allow to dry Use the preceding descriptions to identify which desiccant you have Then regenerate it by placing the par ticles in a shallow layer in the bottom of the heat resistant con tainer and heating them at the proper temperature for several hours or until the blue or yellow color returns 5 3 Care of the Submerged Probe and Cables 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting N CAUTION Do not attempt to regenerate the desiccator by placing the entire cartridge in an oven The cartridge is plastic and will melt Do not use a microwave oven Do not allow moisture to enter the reference tube for the submerged probe Why Regenerate It is very important to regenerate the des iccant even though the flow transmitter will continue to operate for some time with a saturated desiccant cartridge The problem is that soon water vapor will get inside the reference port vent tube If enough condenses it will form water drops that can easily block the narrow reference tube If water drops form inside the tube the reference port will no longer be at atmospheric pressure and level readings will become erroneous Since you cannot see the water y
38. permanent offset to be placed on the transducer or may damage or break the chip bonding wires ruining the transducer Flush the stainless steel dia phragm with gently running water only M Note Various accessories for use with the 3020 Flow Transmitter such as connect cables etc are mentioned throughout this manual The part numbers for these items are listed on an Accessory Parts List which will be found at the back of the manual Part numbers for other equipment may be obtained from the factory 3020 Flow Transmitter Section 1 Introduction 1 6 Controls Indicators The controls indicators and terminal blocks of the 3020 Flow and Terminal Blocks Transmitter are listed in Table 1 1 and their functions are briefly described Refer to Figure 1 3 for a view of the controls and indicators and Figure 1 4 for a view of the connectors ISCO 3020 Submerged Probe Flow Transmitter CHEE TEL UE e Pregramendrnig iab lignin ee ee eee REGE gogog _ eee ee ee ee eee Fwd a DU Cu Lar pe S8 Pee ee DBDO a fod PR SRP Pee e ee ey 1 5s Dag wi nai da BBA He PR pai PE z Jim FA lad et ph F BOBBY Programming Steps e Le G7 p POM s w mtm Pre ena ior neg 18 m EP aS ae EMT C Tt Ria cae coe a abd T Lamar iR A REOR RD mi te resa DOOR a te as ils p d MN Plum 3 737 Id mu mw ID TM Tu t i Preis iw ug 112 Th 1 ECT ST xa a d d mo pp CERE TT Fi
39. power source Either a blown fuse or someone acciden tally flipping off the breaker can cause this Also make sure the voltage selector switch on the terminal printed circuit board is in the correct position e Look for evidence of physical damage You can usually identify readily burned or broken components broken wires overheated components burned foil traces on the board stuck or inoperative switches loose or wrong connections or evidence of water damage e Consider the possibility of a lightning strike Inexplicably large numbers of bad semiconductors burnt components or parts of the board are indications that lightning has struck nearby A close hit can destroy most of the components on the board especially the 5 9 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 10 5 7 2 Precautions for Servicing AC Powered Equipment semiconductors In such cases you are better off to replace the board outright rather than attempt to make repairs Look for shorted or open diodes and transistors Semiconductors particularly power handling ones are prone to failure from short circuiting and you can usually identify this with an ordinary ohmmeter Note however that you cannot identify failed power MOS semiconductors this way e Check to see that voltage regulators are working properly Properly working voltage regulators should operate within 5 of their rated value or better A low 5 volt rail is an
40. the programming sequence identify the primary measuring device used then choose the number referring to that device from the list printed on the label or in the table on the next page Thirty two common primary measuring devices are supported by the 3020 If the flow trans mitter is used to measure level only select 33 If an equation is to be used select 34 and continue as follows Steps 3 6 These steps will only appear on the display and be used when 34 Equation is selected and allow the user to program the values N1 P1 N2 and P2 for the general flow equation Q flowrate Kx NIxH 2 N2xH See Section 2 4 3 for a detailed discussion about the equation With any choice but 34 in Step 2 the program advances auto matically to Step 7 Step 7 MAXIMUM HEAD The flow transmitter will request entry of a value for MAXIMUM HEAD The flow transmitter will display the value already in memory Possible values entered here will range from 0 1 to 12 feet 0 03 3 7 m Always select a value for maximum head which is reasonable for your particular application rather than the maximum value allowable as the accuracy of the level to flow rate conversion will be based on this value Step 8 Step 8 requests entry of flow rate at maximum head Values range from of 0 001 to 9 999 Remember to base the flow rate at maximum head on the value you entered in Step 7 rather than the maximum head allowable for the device This infor
41. to flex slightly This flexing causes the resistors on one side of the bridge to stretch slightly while the resistors on the other side of the bridge compress slightly The result is an unbalance in the current across the bridge which is proportional to the increase of hydrostatic pressure caused by an increase in level of the flow stream This bridge is fed from a con stant voltage source therefore the output voltage changes The output from the transducer is quite low and the impedance is high so an amplifier is provided to boost the signal so that it will still be usable by the flow transmitter even when extension cables are used with the transducer This amplifier is encapsu lated in the plastic box mounted near the connector end of the submerged probe s cable The controls of the 3020 Flow Transmitter are shown in Figure 1 3 The operation and use of the keypad are described in detail in the following sections Access to the keypad is possible only when the door is opened The LCD and totalizer are visible through the window in the front door of the cabinet The keypad is mounted in the middle of the left side of the 3020 front panel It is visible when the cabinet door is closed The keypad has 23 keys arranged in six vertical columns The function of each key is as follows J ARROW DOWN This key is used in the LEVEL ADJUST step of the program it can be used in place of the number keys to decrease the level shown on the displ
42. user If they appear exit the program by pressing CLEAR ENTRY twice and start the programming sequence over You can reset the flow transmitter s software by turning off power holding down 4 and CLEAR ENTRY at the same time and restoring power This may require more than one person and it will be necessary to completely reprogram the unit afterwards A repeated error message that will not clear or prevents you from programming indicates a serious internal problem It may require service M Note The software reset 4 CLEAR ENTRY replaces the user s program with factory default settings Record all program set tings prior to performing the reset The electronic circuitry of the 3020 is solid state and its reli ability is high If the unit should fail to operate properly the problem may be a mechanical failure Check for a loose connector or a clogged reference line 5 7 If Serious Problems Occur 5 7 1 Preliminary Troubleshooting Steps 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting N CAUTION Do not attempt to service the 3020 Flow Transmitter unless skilled in the analysis and repair of digital circuits You must also know how to work safely on AC powered equipment as a real safety hazard is present here If the technical information presented in the following sections is not clear to you do not attempt to make repairs other than changing the fuse or cleaning the submerged probe level sensor if
43. 003 and easily bent The slightest deformation may result in damage to the trans ducer or the placing of a permanent offset on it In either case the submerged probe will be ruined Do not drop the assembly or subject it to any physical abuse 5 3 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 4 5 3 1 Low Maintenance 5 3 2 Cleaning the Submerged Probe Without Disassembly 5 3 3 Disassembling the Probe for Cleaning The submerged probe contains no user serviceable parts and nor mally requires no maintenance The probe will continue to function even when covered with several inches of silt sand or other solid materials It is generally not necessary to clean accu mulated solid materials from the vicinity of the probe However it may be beneficial to periodically clean the flow stream up and downstream from the submerged probe to maintain the hydrostatic conditions on which the level to flow rate conversion is based The probe has been designed to expose a small frontal area and a streamlined profile to the flow and that reduces the possibility of accumulating deposits of solid mate rials If level readings become erratic or erroneous return the probe to Teledyne Isco Technical Service for evaluation Occasionally organic materials may become jammed inside the submerged probe s housing If this material swells as it becomes saturated with water it will exert pressure on the stainless dia phrag
44. AC power cord to the power input terminals on TS1 Connect Line or Hot to TS1 1 Ground to TS1 2 and Neutral to TS1 3 Use Stahlin fittings see Section 3 2 2 to seal the line cord and level sensor cable and relieve strain where they enter the case This allows the unit to plug into an electrical outlet like any appliance Teledyne Isco does not rec ommend the use of a line cord and wall outlet for permanent installations for reasons of both safety and reliability If you do use the flow transmitter as a portable instrument pay attention to the safety of others working in the area during installation Do not run cables carelessly so they cause people to trip over them or are damaged by other activity in the area In the following sections information is provided on wiring the 3020 to the submerged probe and other equipment Section 4 pro vides wiring information for the various accessories The 3020 and associated equipment use different types of wire for inter connection In some instances you may supply your own cable in others you must use Teledyne Isco supplied cable When a user supplied cable 1s described match this cable as closely as possible and stay within the given distance limits In some loca tions where there is electrical background noise some distances given may not be possible especially for data lines In some juris dictions all wiring to the flow transmitter must be installed in conduit in others only the AC powe
45. CB 5 4 2 Accessing the Flow Transmitter PCB In permanent installations cables repeatedly subjected to rough environments will fail and should be installed in conduit for pro tection The conduit must be large enough to pass the M S con nectors as you cannot remove or replace them CAUTION Avoid putting heavy pressure on the submerged probe cable or making sharp bends in it when installing or servicing the probe Excessive pressure may collapse the cable crushing the refer ence vent tube Sharp bends may cause the cable to kink also blocking the vent When securing the cable with plastic cable ties tighten them only enough to secure the cable do not tighten them so much that the cable jacket is visibly deformed The flow transmitter cabinet has two sections upper and lower The upper section contains the circuitry for the microprocessor the keypad the driver for the submerged probe level sensor the totalizer and the display The board containing this circuitry CPU is enclosed in an aluminum housing for isolation and pro tection Cables with connectors on both ends pass through the partition separating the two sections to the lower section which contains the terminal printed circuit board See Figure 5 3 for a view of the aluminum cover and the cables All wiring to the flow transmitter is connected to terminals on this board which also contains the transformer the beeper sampler output relay and fuse This circuit b
46. Dis connect Box where the authorities require installation of wiring in conduit The submerged probe M S connector attaches to a matching M S connector mounted on the side of the Quick Dis connect Box The Quick Disconnect Box contains a terminal strip Cable attached to these terminals may run as far as 1000 feet 305 m to connect to the flow transmitter Teledyne Isco has suitable cable available for this purpose or you can supply your own cable For longer distances or installations where there is a high level of electrical noise the use of shielded cable is sug gested Minimum specifications for the cable are 22 AWG two twisted pairs four wires jacketed optionally shielded The Quick Disconnect Box also contains a vent for the reference port air tube coming from the submerged probe The vent passes through a desiccator cartridge mounted on the side of the Quick Disconnect Box to the atmosphere to provide a pressure reference for the transducer in the submerged probe Since the probe s reference port vents at the Quick Disconnect Box the cable from the Quick Disconnect Box to the flow transmitter does not need to have the air vent tube Attached to the back of the Quick Disconnect Box is a stainless steel mounting plate with two 12 keyhole mounting holes on 3 centers 16 to 8 hardware is sufficient to mount the Quick Disconnect Box Install the wiring between the flow trans mitter and the Quick Disconnect Box with S
47. EMENT PARTS LIST MODEL 3020 sue sor 3 TELEDYNE ISCO INC d PART NUMBER DESCRIPTION 603404045 CONTROL PANEL ASSEMBLY SUBMERGED PROBE 603403040 CASE HINGE 109000000 DRAW LAICH OVER C 209016060 PLUG 1 8MIPI 109030901 TAPERED CAPLUG 3 4 109030906 TAPERED CAPLUG I 2 503404073 603404014 POWER TRANSFORMER ASSEMBLY 603404010 CBA 3020 TERMINAL SIRIP 603403017 WARNING SHIELD 603403015 LABEL WARNING SHIELD 231019906 op oo ol Ta p ieu 3t ore 603404063 LOWER COVER ASSEMBLY METRIC f 3 4 eel X px co OO x IO CO d 109050100 DUTTON KEEPER STAINLESS SIEEL 2 0037 L0 9e WINDOW e 603404040 CPU WITH DISPLAY ASSEMBLY Bloo o ex DEDOS WINDOW SUPPORT 1 IRIDITED e 4 0311530 FUSE 3A6 250V 5A oLO BLO E 603403034 UPPER PANEL GASKET C3 603403036 LOWER PANEL GASKET NOI SHOWN NOTE For current prices and quotations on parts contact Isco Service Department 2 This list is subject to change without notice 3020 Flow Transmitter Appendix A Replacement Parts and Accessories A 2 Accessories and Spare When ordering an optional or accessory part include the Parts description and Teledyne Isco part number 3020 for conduit installation uses Quick Disconnect Box 0 0 000000 68 3020 001 3020 for non conduit installation llli 68 3020 002 Submerged Probe 10 Range with 25 foot ca
48. Enter Units of Measure for Totalized Volume on Remote Plotter 1 CF 2 GAL 3 CM 4 AF 5 L 6 MG Step 14 Enter Zeroes to the Right of the Totalizer range 0 to 9 Step 15 Reset Plotter Totalizer to Zero 1 Yes 2 No Step 16 Display Operation Press DISPLAY MODE 1 Flow Rate 2 Level 3 Alternate Between Flow Rate and Level Step 17 4 20 mA Output Operation Press the 4 20 ma OUTPUT key 1 Transmit Flow Rate 2 Transmit Flow Rate With Event Mark 3 Transmit Level 4 Transmit Level With Event Mark Step 18 Current Level in Feet Press ADJUST LEVEL range 1 0 to 10 B 3 3020 Flow Transmitter Appendix B Programming Worksheets B 4 3020 Flow Transmitter Appendix C General Safety Procedures 3020 Flow Transmitter Appendix C General Safety Procedures C 1 Practical Safety Precautions In field installations of 3020 Flow Transmitters and associated equipment the safety of the personnel involved should be the foremost consideration The following sections provide safety pro cedures for working in and around manholes and sewers the first section offers general safety advice The second section deals with the special problem of hazardous gases found in sewers N WARNING The 3020 Flow Meter has not been approved for use in hazardous locations as defined by the National Electrical Code N CAUTION Before any flow transmitter is installed the proper safety pre cautions must be taken The following d
49. HALL 1 24 TRAPEZOID 2 45 WSC 6 PARSHALL 2 25 TRAPEZOID 12 45 7 PARSHALL 3 SRCRC 8 PARSHALL 6 26 H FLUME 0 5 9 PARSHALL 9 27 H FLUME 0 75 10 PARSHALL 12 28 H FLUME 1 11 PARSHALL 18 29 H FLUME 1 5 12 PARSHALL 24 30 H FLUME 2 13 PARSHALL 36 31 H FLUME 3 14 PALMER BOWLUS 6 32 H FLUME 4 5 15 PALMER BOWLUS 8 33 LEVEL ONLY 16 PALMER BOWLUS 10 34 EQUATION SEE STEPS 17 PALMER BOWLUS 12 3 6 3020 Flow Transmitter Section 2 Operation and Programming Step 10 Press Sampler Output SAMPLER SCALING 0 to 9 999 Steps 11 15 Press Plotter Output Step 11 Flow Rate Units on Plotter UNIT OF MEAS FOR FLOW RATE ON PLOTTER 1 GPM 2 GPS 3 MGD 4 CFS 5 CMS 6 CMH 7 CMD 8 LPS 9 CFD 10 GPH 11 AFD 12 CFH Step 12 Plotter Flow Rate Zeros skipped if no zeros to right of display ZEROS TO RIGHT OF FLOW RATE DISPLAY 0 to 6 Step 13 Totalized Volume Units on Plotter UNIT OF MEAS FOR TOTALIZED VOLUME ON PLOTTER 1 CF 2 GAL 3 CM 4 AF 5 L 6 MG Selection 34 only Equation 4 P1 0 1 to 3 0 6 P2 0 1 to 3 0 Step 7 Maximum Head MAXIMUM HEAD FEET 0 1 to 10 0 METERS 0 03 to 3 04 Step 8 Flow Rate at Max Head Equation Only FLOW RATE AT MAXIMUM HEAD 0 001 to 9 999 Step 9 Totalizer TOTALIZER SCALING 0 to 9 999
50. Installation In this section installation of the 3020 Flow Transmitter and the submerged probe level sensor is described in detail Information is also provided on wiring between the 3020 and an automatic wastewater sampler 3 1 General Comments on While the 3020 may be used for portable or temporary flow moni Installation toring it is generally intended for permanent installation as connection to a commercial power source is necessary You may install the flow transmitter either inside or outside but inside installation is preferable particularly in areas with severe climate extremes of heat cold or moisture The flow transmitter is housed in a strong weather resistant plastic case but instal lation where the case will be exposed to full sunlight should be avoided particularly in warm climates to prevent overheating the electronic components The flow transmitter contains heaters to help maintain proper operating temperatures for the electronics in severely cold weather 3 1 1 Avoid Possibility of The flow transmitter has a seal on the door and operation in wet Submersion and environments is acceptable but never install the unit where Installation in there is any possibility of submersion of the case This is not only Unsecured Locations bad for the flow transmitter but also creates the possibility of a shock hazard due to the presence of 120 VAC power Always make outside installations in areas which are at least relatively s
51. ME 23 LARGE 60 V TRAPEZOIDAL FLUME 24 2 45 WSC TRAPEZOIDAL FLUME 25 12 45 SRCRC TRAPEZOIDAL FLUME 26 0 5 H FLUME 27 0 75 H FLUME 28 1 HE FLUME 29 1 5 H FLUME 30 2 H FLUME 31 3 F FLUME 32 4 5 H FLUME 33 LEVEL ONLY 34 EQUATION SEE STEPS 3 6 Steps 3 6 Equation NOTE Steps 3 6 will only be used if 34 above EQUATION was selected in Step 1 Otherwise go directly to Step 7 The values for the components of the general flow equation are entered in Steps 3 6 Q K N1 x HP N2 x HF Step 3 N1 4 999 to 4 999 Step 4 P1 0 1 to 3 0 Step 5 N2 4 999 to 4 999 Step 6 P2 0 1 to 3 0 Step 7 Enter Maximum Head in Feet range 0 1 to 12 0 Step 8 Enter Flow Rate at Maximum Head range 0 001 to 9 999 Step 9 Enter Totalizer Scaling range 0 to 9 999 Program the following step only if the 3020 is connected to an automatic wastewater sampler Press the SAMPLER OUTPUT key Step 10 Enter Sampler Scaling range 0 to 9 999 B 2 3020 Flow Transmitter Appendix B Programming Worksheets Program Steps 10 to 14 only if the 3020 is connected to a 2312 Plotter Press the PLOTTER OUTPUT key Step 11 Enter Units of Measure for Flow Rate on the Remote Plotter 1 GPM 2 GPS 3 MGD 4 CFS 5 CMS 6 CMH 7 CMD 8 LPS 9 CFD 10 GPH 11 AFD 12 CFH Step 12 Enter Zeroes to the right of the Flow Rate Display range 0 to 6 Step 13
52. NN P i Y m B Mini LS Pd Z Asa Cx t A J su be i MA gt 4 54 Figure 5 4 Circuit Board with Aluminum Cover Removed o 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 4 3 Fuse Replacement 5 5 Display Warnings 5 5 1 Software Reset 5 6 Hints on 5 8 Troubleshooting With the lower section of the cabinet open the user can change the fuse The fuse 1s located on the terminal PCB on the left side of the board next to the transformer It is visible when the pro tective cover is off See Figure 1 4 The fuse 1s labeled F1 The proper size for this fuse is 1 2 amp Slow Blow Always replace a blown fuse with one of the same rating Using a larger fuse may cause serious damage to the unit and could even cause a fire hazard by burning up the transformer if there is a severe short on the secondary Turn off power before changing the fuse If the new fuse blows immediately after power 1s restored a serious problem 1s indicated Either have the flow transmitter repaired by properly qualified personnel or return the flow trans mitter to the factory for servicing The 3020 LCD displays various error messages to warn the user of problems in the program or difficulties inside the flow trans mitter Messages will generally assume the format of F x X represents a number or numbers from 1 80 The codes are indicative of software errors and are of no par ticular concern to the
53. SURE TO ENCLOSE A NOTE EXPLAINING THE PROBLEM Shipping Address Teledyne Isco Inc Attention Repair Service 4700 Superior Street Lincoln NE 68504 USA Mailing Address PO Box 82531 Teledyne Isco Inc Lincoln NE 68501 USA 800 775 2965 lab instruments 866 298 6174 samplers amp flow meters Sales amp General Information 800 228 4373 USA amp Canada Phone Repair service Fax 402 465 3001 Email August 13 2011 P N 60 1002 040 Rev F IscoService teledyne com Nae TELEDYNE ISCO A Teledyne Technologies Company Y
54. Troubleshooting 5 6 5 8 Circuit Boards 5 13 Preliminary Steps 5 9 V Voltage Selection 3 4 W Wiring 3 2 2410 Recorder 4 6 Alarm Box 4 3 Hemote Totalizer 4 5 Submerged Probe 3 4 Teledyne Isco One Year Limited Factory Service Warranty Teledyne Isco limited warranty This warranty exclusively covers instruments providing a one year covering parts and labor Any instrument that fails during the warranty period due to faulty parts or workmanship will be repaired at the factory at no charge to the customer Teledyne Isco s exclusive liability 1s limited to repair or replacement of defective instruments Teledyne Isco is not liable for consequential damages Teledyne Isco will pay surface transportation charges both ways within the 48 contiguous United States if the instrument proves to be defective within 30 days of shipment Throughout the remainder of the warranty period the customer will pay to return the instrument to Teledyne Isco and Teledyne isco will pay surface transportation to return the repaired instrument to the customer Teledyne Isco will not pay air freight or customer s packing and crating charges This warranty does not cover loss damage or defects resulting from transportation between the customer s facility and the repair facility The warranty for any instrument is the one in effect on date of shipment The warranty period begins on the shipping date unless Teledyne Isco agrees in writing to
55. a different date Excluded from this warranty are normal wear expendable items such as charts ribbon lamps tubing and glassware fittings and wetted parts of valves and damage due to corrosion misuse accident or lack of proper maintenance This warranty does not cover products not sold under the Teledyne Isco trademark or for which any other warranty is specifically stated No item may be returned for warranty service without a return authorization number issued by Teledyne Isco This warranty is expressly in lieu of all other warranties and obligations and Teledyne Isco specifically disclaims any warranty of merchantability or fitness for a particular purpose The warrantor is Teledyne Isco Inc 4700 Superior Lincoln NE 68504 U S A This warranty applies to the USA and countries where Teledyne Isco Inc does not have an authorized dealer Customers in countries outside the USA where Teledyne Isco has an authorized dealer should contact their Teledyne Isco dealer for warranty service Before returning any instrument for repair please call fax or e mail the Teledyne Isco Service Department for instructions Many problems can often be diagnosed and corrected over the phone or by e mail without returning the instrument to the factory Instruments needing factory repair should be packed carefully and shipped to the attention of the service department Small non fragile items can be sent by insured parcel post PLEASE BE
56. ails on the special flumes M Note Always install the submerged probe pointing toward normal flow at the head measuring point of the device The location of the measuring point varies with each device Refer to Table 3 1 or to the Isco Open Channel Flow Measurement Handbook Table 3 1 Locating the Head Measuring Point Head Measuring Point Weirs Upstream from the weir plate by at least 3 times the maximum head ParshallFlumes Flumes 73 of the way into the converging section of the way into the converging section diia Bowlus Upstream ee asa the flume entrance by half the pipe Flumes diameter M Note When installing the probe with custom hardware remember to attach the probe securely to the side or bottom of the flow stream and tie the cable down so that it does not collect debris For many primary measuring device installations the sub merged probe mounting rings or base sections discussed previ ously may be used to mount the probe at the appropriate location In many installations though the mounting rings or bases may not be suitable 3 17 3020 Flow Transmitter Section 3 Installation Sensor Mounting Plate Palmer Bowlus Flume A A a Base Bottom Assembly Parshall Flume Probe Mounted in Recess Figure 3 11 Typical Primary Device Installations Round Pipe Spring Ring Round Pipe Probe installed from above outside of manhole by using Stre
57. ain any deformation of the stainless steel diaphragm will per manently disable the submerged probe If you must remove the nose of the probe do it very carefully A small warning disk is located in front of the transducer Do not remove the warning disk After cleaning reinstall the nose section and tighten the screws The mounting hole must be aligned with the grounding point Figure 5 2 Alignment of Grounding Point 5 3 4 Cable Inspection Periodically 1nspect the submerged probe cable for wear Damaged cables can affect the operation of the probe particu larly if the reference port vent tube inside the cable is collapsed or blocked Damaged cables cannot be spliced or repaired suc cessfully and should be replaced If the submerged probe cable is damaged you must replace the probe assembly as the probe cable amplifier and connector are a factory sealed unit that cannot be repaired Keep connectors clean and dry In permanent installations such as treatment plants for example install the cables so they are not at risk of damage resulting from other activity taking place in the area In temporary installations do not leave cables lying around where they may be run over by heavy equipment Do not leave extra cable lying in the flow stream where it can trap debris 5 5 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 4 Mechanical and 5 6 Electrical Components 5 4 1 Accessing the Terminal P
58. alist Multisorb Technologies Inc This data and recommendations presented in this data sheet concerning the use of our product and the materials contained therein are believed to be correct but does not purport to be all inclusive and shall be used only as a guide However the customer should determine the suitability of such materials for his purpose before adopting them on a commercial scale Since the use of our products is beyond our control no guarantee expressed or implied is made and no responsibility assumed for the use of this material or the results to be obtained therefrom Information on this form is furnished for the purpose of compliance with Government Health and Safety Regulations and shall not be used for any other purposes Moreover the recommendations contained in this data sheet are not to be construed as a license to operate under or a recommendation to infringe any existing patents nor should they be confused with state municipal or insurance requirements or with national safety codes 3020 Flow Transmitter Index Numerics 2410 Circular Chart Recorder 4 6 4 20 mA Output 2 10 A Accessories and Spare Parts A 5 Alarm Box 4 1 Analog Output 2 10 C Circuit Boards 5 13 Compatible Equipment 1 2 2410 Chart Recorder 4 6 High Low Alarm Relay Box 4 1 Quick Disconnect Box 3 6 4 6 Hemote Totalizer 4 5 Sampler 3 8 Controls 1 4 Keypad 2 2 D Desiccant 5 2 D 1 Display 2 3 Operation 2 10 Wa
59. ally within 250 feet to a device capable of interpreting serial data such as a video display terminal or a printer The specifica tions for this serial data output are as follows 300 baud 7 data bits 2 stop bits even parity The printed or displayed line contains 110 characters and will appear similar to the following 01 409F 100 00 2 500 0 CFS 0001533 0 CF 00 00 The first number is the level in feet The second number is the percentage of flow rate at maximum head The third number is maximum flow rate the fourth is units of flow The fifth is total flow and units of total flow The sixth and seventh numbers are 4 3 Remote Totalizer Figure 4 3 Remote Totalizer 4 3 1 Wiring the Remote Totalizer 3020 Flow Transmitter Section 4 Options and Accessories sample number and bottle number The last two characters not displayed are a CR carriage return and an LF line feed The large gaps between some of the words indicate extra character spaces which are defined for a 2312 plotter but not for the 3020 Teledyne Isco offers a remote totalizer for use with the 3020 It consists of a 7 digit non resettable mechanical counter mounted in a plastic enclosure similar to the alarm box and the Quick Dis connect Box Mount the remote totalizer the same way as those units 9055 29 29 MAL TY 0 669 OIA TYP I cm Yt Gay m dif Connect the remote totalizer to the 3020 with a 2 wire cable Use you
60. am and then adjust the indi cated level to match the actual level The flow meter can indicate negative levels A location other than the bottom of the flow stream may be useful for various reasons to avoid heavy concentrations of silt sand or other solids to make installation easier in tight loca tions to maximize level resolution over a specific level range to avoid hydraulic obstructions in the flow stream etc The probe has several ports through which liquid enters the body to contact the pressure transducer The only way for the probe to malfunction is for all the ports to be completely blocked Most substances likely to cover the probe are somewhat porous which still allows the hydrostatic pressure of the flow stream over the probe to reach the transducer Bore 0 437 X 0 330 Deep 1 11 X 0 838 cm 0 141 Dia Thru 0 358 cm I E r I Liquid Ports 2 06 cm a 7 249 18 42 cm 9 38 23 82 cm Figure 3 4 Submerged Probe Dimensions 3 10 3 8 1 Functionality Under Solids Consequently the probe will normally continue to function even when covered with several inches of silt or sand Note however that porous solids such as wood chips or other organic material that may swell considerably when soaked in water can interfere with the correct operation of the pressure transducer In extreme cases swelling material can put enough pressure on the dia 3 8 2 Minimum Reliable Dete
61. an a particular interval of time For example assume the flow rate at maximum head for a par ticular installation is 32 540 GPM 32 540 GPM x 60 min hr 1 952 400 gallons hour GPH We want to send a flow pulse to the associated wastewater sampler every 10 000 gallons 1 952 400 GPH 10 000 gallons pulse 195 pulses hour You would then enter 1 9 5 If the associated wastewater sampler is programmed to take a sample every 50 pulses it will be taking a sample every 500 000 gallons 10 000 gallons pulse x 50 pulses per sample 500 000 gallons sample If the sampler is programmed to take a sample every 200 pulses it will be taking a sample every 2 000 000 gallons 10 000 gallons pulse x 200 pulses per sample 2 000 000 gallons sample Steps 11 to 15 Plotter Output These steps need to be pro grammed only if the 3020 1s used with an Isco 2312 Plotter Selections made in Steps 11 15 will determine the operation of the 2312 The selections made here do not affect the way the 3020 operates However values chosen should be consistent with choices made for earlier steps Step 11 Units of Measure for Flow Rate on Remote Plotter Several selections for units of measure are provided here which will be the units printed out on the chart of the 2312 Units selected should be the same as selected for Step 8 Step 12 Zeros to the Right of the Flow Rate Display 0 to 6 This step is programmed with the number of zero
62. atics and instruc tions without notice Contact Information Customer Service Phone 800 228 4373 USA Canada Mexico 402 464 0231 Outside North America Fax 402 465 3022 Email IscoCSR teledyne com Technical Support Phone 800 775 2965 Analytical 866 298 6174 Samplers and Flow Meters Email IscoService teledyne com Return equipment to 4700 Superior Street Lincoln NE 68504 1398 Other Correspondence Mail to P O Box 82531 Lincoln NE 68501 2531 Email IscoInfo teledyne com Web site Wwww isco com Revised March 17 2009 3020 Flow Transmitter Table of Contents Section 1 Introduction l1 Manual Oreani zation x 3 66 4 935 RS A Geib PRAES Ged Gon a Ga Bon bs 1 1 1 25 AVES CEI Ul OU ue bused esses d So to a Bossman a Belen de wise ah eru tr ea Se eae 1 1 1 3 Associated Equipment csi 3 v ek ee es ek Mp dup a Re dE SS 1 2 1 4 The ubniersed Probst xs ea area end ww ete a Gewese wees 1 2 arl Pcr 1 3 1 6 Controls Indicators and Terminal Blocks eee 1 4 l7 Technical Specifications c cs xu uer ec RR n ees BAe EROR PXEE UC RU 1 6 Section 2 Operation and Programming 2b Theoryot Operation 2x34 EX Ree EE hw SEE OE Genet ETRAS est 2 1 2 T 1 9020 Transmitter Loud ero Sno Pd ieee gh Tera be ah tee 2 1 2 1 2 The Submerged Probe uda eorr be eke eo ho ee um a dous 2 1 2 1 3 Transducer Operation serso cious Eu a RE eoe REN ORDRE RR IR OBER 2 2 LEBEN wide mT
63. ay T ARROW UP This key is used in combination with the display in the LEVEL ADJUST step of the program it can be used instead of the number keys to increase the level shown on the display CLEAR ENTRY This key provides the user with a way to return to a previous entry of a program step NOTE Pressing the key twice in succession allows the user to exit the program DECIMAL This key is used with the number keys when entering numeric values into the program ENTER PROGRAM STEP Pressing this key will allow the user to enter changes made to the program into memory To access the program it is first necessary to press one of the yellow FUNCTION KEYS Pressing one of the yellow FUNCTION KEYS stops the program and allows the user to make changes After the change is made and appears on the display pressing ENTER PROGRAM STEP will cause the change to be entered to the flow transmitter s memory It is also possible to step through the program held in memory by pressing this key The number of the program step will appear on the left side of the display and the number of the current selection or value entered will be shown 2 2 2 Display 2 2 3 Power Failures 2 3 Programming 2 3 1 Programming Overview 3020 Flow Transmitter Section 2 Operation and Programming NUMBER KEYS The number keys are used to enter numeric values into the program They may also be used to make a selection from the options displayed on the label
64. ble 0 0 0 eee ee 60 3224 002 25 Extension Cable for the Submerged Probe 0 0 0 ec cee eee 60 3224 004 50 Extension Cable for the Submerged Probe llle 60 3224 005 Cable Connect Kit for the submerged probe level sensor for non conduit installations 60 3404 048 Submerged Probe Quick Disconnect Box 0 0 0 0 ce eens 60 3224 003 Submerged Probe Carrier Assembly Use with Isco Mounting Rings 60 3204 005 Reference port vent tubing for use with Quick Disconnect Box where there is a possibility of submersion ixi eaea ra N A cT 60 2703 111 ZW NETTE aa aad eee Baek Bee ee 60 2703 112 For non conduit installations a watertight cord grip is also required see below Connect Cable Series 3000 Flow transmitter to Isco Sampler 22 ft non conduit installations llle 60 1394 077 NOTE Watertight cord grip fitting also required p n 207 0076 04 Flow transmitter to Sampler Y Connect Cable ce ee ee ens 60 3704 081 High bow Alarm Relay DOX 209b aV Aes wR Ae haha a Se BS See TEE 60 3404 028 High Low Alarm Relay Box Instruction Manual ellen 60 3403 071 Remote Totalizer Eight digit non resettable 0 ee ee ens 60 2440 019 Connect Cable Series 3000 Flow Transmitter to 2410 Circular Chart Recorder OR PP 68 3020 009 sr rep MC aan Sad 68 3020 010 TOO TU scouts ecdesia Ap sedent amc O EA 68 3020 011 DOO Gs at avente uae eh
65. ch is in the right position for the available voltage If the switch is in the wrong position either the fuse will blow or inadequate voltage will prevent the flow transmitter from oper ating correctly Connect Black or whatever color serves as hot to Terminal 1 Hot Ground to Terminal 2 Ground and White neutral to Terminal 3 Neutral of TS1 Black or TS1 1 Line or hot other color Green TS1 2 Ground White TS1 3 Neutral N WARNING HAZARD OF ELECTROCUTION You can be KILLED if you accidentally contact the 120 VAC power supplied to the 3020 Do not attempt to wire the 3020 live or perform any work on the unit with power connected and the protective covers removed Use particular care working around the three large terminals on TS1 where 120 VAC power is brought in Turn off the breaker or cutoff switch if it is necessary to change the wiring to replace the fuse or do any other service requiring removal of the covers Be particularly careful if the flow transmitter is located in a wet area N WARNING POSSIBLE EXPLOSION HAZARD DO NOT introduce AC wiring or the 3020 into an environment where flammable liquids or explosive vapors may be present Organic solvents oils and fuels would be examples Electric sparks made during connection or operation of the unit or the transmission of flow pulses to a sampler could ignite the fumes causing fire or an explosion Detailed instructions on mounting and installing the submer
66. coming completely familiar with the routine maintenance procedures presented here While the 3020 is ruggedly built to withstand severe field conditions it will function best and remain most reliable if these simple procedures are learned and followed Under normal operating conditions the case should require little or no maintenance In very dirty installations the window may get clouded over time Clean it with a soapy rag or spray it with an aerosol of mild detergent and then wipe it dry with a clean soft cloth Do not use abrasives or any kind of solvent on the window or the plastic may become scratched clouded or cracked Make sure the lid is tightly latched Compressed air may be used to blow away dust and debris from the case Periodically inspect the case seal and clean it if necessary The ridge around the edge of the back half of the flow transmitter cabinet forms a seal with the groove in the cabinet door This seal should be free of dirt sand etc If it is dirty clean it carefully with a damp cloth The rubber gasket in the lid should also be clean if not it may be cleaned with a small brush and a damp cloth If you do any of these cleaning procedures while the case is open be careful not to allow any dirt or debris to fall inside the flow transmitter case If the flow transmitter is installed out doors and the seals are not properly maintained they may leak causing damage and eventual failure of the components inside
67. concentra tions Exposure for 2 to 15 min at 0 01 impairs sense of smell Odor not evident at high concen trations Color less Flammable Methane Simple asphyxi ant Colorless odor less tasteless flammable Impairs sense of smell rap idly as concen tration increases Death in few minutes at 0 2 Exposure to 0 07 to 0 1 rapidly causes acute poison ing Paralyzes respiratory center Ampoule 2 5 by weight lead acetate solution 1 Combustible gas indicator Natural gas sludge gas manu factured 2 Oxygen defi gas sewer ciency indica gas Strata tor of sedi mentary origin In swamps or marshes At top increas ing to certain depth Acts mechani cally to deprive tissues of oxy gen Does not support life Probably no limit provided oxygen percent age is suf ficient for life Near top but may be found near bottom Sewer gas sludge gas Also issues Oxygen deficiency indicator Simple asphyxi Physiologically ant Colorless inert tasteless Nitrogen Oxides Non flammable Principal constit uent of air about 79 Colorless Colorless sweet odor Reddish brown Irritating odor Deadly poison Colorless odor less tasteless Supports com bustion Irritant and poi sonous Strong electrical odor Strong oxidizer Colorless At 1 ppm strong sul fur like odor 60 to 150 ppm cause irritation and c
68. ction Level 3 9 Submerged Probe Nose Sections Standard Nose Section Slanted Nose Flume Cap Section OY 3020 Flow Transmitter Section 3 Installation phragm of the pressure transducer to deform it This will ruin the submerged probe by introducing a permanent offset to the pressure transducer M Note Always install the probe where it will be under water even if only an inch or so The probe cannot measure levels that fall below its location in the stream It is important to note that there is a practical minimum water level below which the submerged probe cannot reliably measure level This minimum level is approximately equal to the height of the probe body 0 1 ft 1 3 in or 0 030 m Liquid levels lower than this will be below the levels used to cali brate the sensor The submerged probe level sensor will continue to measure levels less than 0 1 ft however the accuracy of the measurement in this range is not guaranteed Consequently you should always use the submerged probe with caution in very low flow situations Teledyne Isco provides three nose sections each designed for spe cific flow stream conditions A complete list of nose sections and their part numbers can be found in Appendix A Standard Nose Section The standard nose section works in any flow stream and will be installed on your probe unless oth erwise specified in your order It is particularly well suited for flow streams with
69. d to prevent the cover from being dropped on the toes The 2 inch projection should be inserted into one of the holes in the cover the handle grasped with both hands and the cover lifted by straightening the legs which have been slightly bent at the knees 8 Other Precautions Other precautions which should be taken when entering a manhole are e Wear a hard hat e Wear coveralls or removable outer garment that can be readily removed when the work is completed e Wear boots or nonsparking safety shoes e Wear rubberized or waterproof gloves e Wear a safety harness with a stout rope attached e Do not smoke e Avoid touching yourself above the collar until you have cleaned your hands 9 Emergencies Every member of the crew should be instructed on procedures to be followed in cases of an emergency It is the duty of each crew chief to have a list of emergency phone numbers including the nearest hospital and ambulance service police precinct fire station and rescue or general emergency number C 3 3020 Flow Transmitter Appendix C General Safety Procedures C 2 Lethal Atmospheres in Cd Sewers 10 Field Equipment The following equipment will be available for use Blowers Gloves Traffic cones Breathing apparatus Hard Hats Coveralls Harnesses First aid kits Manhole irons Emergency flashers Pick axes Flashlights Rain slickers Mirrors Ropes Gas detectors Safety vests Gas masks Waders The follow
70. dic servicing As long as the color of the particles inside the cartridge is blue or yellow the desiccant is good and need not be regenerated The cartridge will first begin to turn pink or green at one end of the cartridge as water is absorbed As time passes the pink or green color will spread through the rest of the desiccant until even tually the entire cartridge will become pink or green Before the entire cartridge has changed color the desiccant should be regen erated Teledyne Isco uses two types of silica gel e One looks like small beads or pellets that are blue black when dry pale pink to transparent when saturated e The other looks like coarse sand yellow when dry dark green when saturated Regenerate desiccant by heating at 212 350 100 175 C N CAUTION Teledyne Isco has received reports of irritating fumes coming from the desiccant during regeneration We have been unable to duplicate this but suggest using caution anyway Identify the desiccant you have Use a vented oven in a well ventilated room Do not heat the desiccant to higher temperatures or fora longer time than necessary Do not remain in the room while the regeneration process is going on To regenerate the cartridge first snap it out of the brackets holding it to the case and detach the silicone tubing from the end of the cartridge Then pull one of the end caps off the cartridge and pour the spent desiccant into a small metal pan or
71. e 4 4 Iemote Totalizelz como Soi oU REIHE pa n Sa usen Cana Eo dr Eos dris 4 5 4 3 1 Wiring the Remote Totalizer 0 00 0 ee eens 4 5 Extension Cables for the Sensor eee RR I 4 6 Quick Drseonnecb Boxster dire ence i a ecce Reg 4 6 Model 2410 Circular Chart Recorder 0 0 0 ccc cece ee eee 4 6 4 6 1 Wiring the 2410 Recorder 2 54 ot x xs ade e o Se RS 4 6 Section 5 Maintenance and Troubleshooting 5 1 5 2 5 3 5 4 Care of the Flow Transmitter Case oonu n anane eee ens 5 1 Ook Case Cal Terie a ates a ip en eh ae a a AANA 5 1 5 1 2 Preventing Moisture Damage 0 0 cece eee 5 1 Regenerating the Desiccant Cartridge llle 5 2 5 2 1 Determining Condition of Desiccant 0 0 0 0 cece 5 2 5 2 2 Identify Desiccant 2 2d By Ei Does o Ras o ae hoe gs Sod a we 5 2 5 2 3 Regeneration Procedure celer 5 2 Care of the Submerged Probe and Cables 0 0 0 0 ccc eee eee 5 3 oal Low Maintenatice sanese eas pee BA re Se os hie a ed E qe ep 5 4 5 9 2 Cleaning the Submerged Probe Without Disassembly 5 4 5 3 3 Disassembling the Probe for Cleaning eee 5 4 Dros Cable Inspecblol 3 52 danas Bato Bede ed Bee LARS ee Need 5 5 Mechanical and Electrical Components 0 0 0 cece ee ee 5 6 5 4 1 Accessing the Terminal PCB llle 5 6 5 4 2 Accessing the Flow Transmitter PCB 0 0 0 00 ce ee een 5 6
72. e step number on the left and the number of the choice currently selected or the numerical value entered for steps requiring a value on the right Not all steps will be used in programming For example if there is no remote plotter Steps 11 15 which are involved with operation of the plotter will be skipped The program steps are printed on the flow transmitter label and normally programming proceeds in a logical manner starting with Step 1 which selects the units used for level measurement feet or meters Step 2 is the selection of the primary measuring device Then maximum head flow rate at maximum head and totalizer scaling are selected If no other equipment is used with the 3020 only Step 16 DISPLAY OPERATION and Step 18 LEVEL ADJUST must be programmed Then the LEVEL ADJUST step is used to calibrate the ultrasonic level sensor Programming in Steps 10 through 15 and 17 occurs when the flow transmitter is used with other equipment Step 10 governs the relationship between the flow transmitter and an associated wastewater sampler Steps 11 15 control the output to an Isco High Low Alarm Relay Box a device to turn equipment on or off when flow reaches or falls below preset levels or a 2312 The 2312 is an electro mechanical printer which records level or flow information from the 3020 on a strip chart to provide a hard copy of information measured by the flow transmitter The 2312 printer is no longer sold by Teledyne Isco
73. ecure to avoid the possibility of tampering or vandalism Always keep the flow transmitter case closed latched and locked except when programming wiring or servicing these holes Figure 3 1 View of Case Latch Showing Lock Shackle 3 1 3020 Flow Transmitter Section 3 Installation 3 1 2 Location of the Flow Transmitter 3 1 3 Portable Operation 3 2 General Wiring 3 2 Comments 3 2 1 Mounting and Wiring Because it uses a submerged probe level sensor the 3020 Flow Transmitter does not have to be mounted directly above the primary device or even close to the flow stream You can install the flow transmitter in a convenient protected location and the level sensor cable can run to the place where the submerged probe is mounted For example if you install the probe in a manhole you can mount the flow transmitter above ground for protection and easy accessibility If you do this you need to enter the manhole only once for submerged probe installation Locate the flow transmitter within 75 feet 22 9 m of the submerged probe unless you use the Quick Disconnect Box which extends the allowable distance to 1000 feet 305 m The 3020 can be used for temporary monitoring of a flow stream limited by the 75 ft distance to the transducer and more impor tantly by the availability of 120 VAC power for the flow trans mitter If you wish to use the 3020 as a portable instrument attach a six ft or longer three wire
74. ed from the neg ative side of the power supply Q1 and one amplifier in U7 are used as a voltage controlled current source to control the current output E d Wdd 12446 Figure 5 5 Component Layout of the CPU PCB 5 14 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting MVS BeEVEWMAEWS Land tno YATdWYS LNSAANS ev WOI 118 32V 3H3lNI earvEe t4nO HSZTIIWWLOL LNdLno WaLNAN ANF P N ru gt ul wW Figure 5 6 Component Layout of the Terminal Board 0 15 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 16 3020 Flow Transmitter SS SSS Appendix A Replacement Parts and Accessories A 1 Replacement Parts Replacement parts are called out in the following pages followed List by a list of accessories Refer to the callout in the adjacent table to determine the part number for the item Replacement parts can be purchased by contacting Teledyne Isco s Customer Service Department Teledyne Isco Customer Service Department P O Box 82531 Lincoln NE 68501 USA Phone 800 228 4373 402 464 0231 FAX 402 465 3022 E mail IscoInfo teledyne com A 1 Appendix A Replacement Parts and Accessories 3020 Flow Transmitter bU 54U5 U9U BV G A 2 3020 Flow Transmitter Appendix A Replacement Parts and Accessories gn EN eS or A 3 3020 Flow Transmitter Appendix A Replacement Parts and Accessories 603403090 REPLAC
75. el Ingestion Material is not toxic and will pass through the body normally Inhalation Slight irritation is possible but none is expected Medical Effects Generally Aggravated by Exposure Respiratory ailments Chronic Effects Carcinogenity May cause eye skin and mucous membrane irritation and drying 3020 Flow Transmitter Appendix D Material Safety Data Sheets Section 4 First Aid Measures Eyes Rinse the eyes well with water while lifting the eye lids If irritation persists consult a physician Skin Wash affected area with soap and water Ingestion Ingestion is unlikely this material will pass through the body normally Inhalation Remove the affected person to fresh air and get medical attention if necessary Notes to Physician Not applicable Section 5 Fire Fighting Measures Flammable Properties Not flammable Flash Point Not applicable Method Not applicable Flammable Limits Not flammable Lower Flammability Limit Not applicable Upper Flammability Limit Not applicable Autoignition Temperature Not applicable Hazardous Combustion Products Not applicable Extinguishing Media Use extinguishing media that is appropriate for the surrounding fire Silica gel is not combustible Fire Fighting Instructions Not combustible Unusual Fire and Explosion Hazards None Section 6 Accidental Release Measures Spill Sweep or vacuum up and place the spilled material in a waste disposal container Avoid ra
76. elect the correct primary device from the list shown on the front panel To select a Cipolletti weir press 4 2 4 Press ENTER 4 Enter the maximum head in feet that you expect to see at the primary measuring device For this example the maxi mum head is 2 feet Press 2 1 2 Press ENTER 5 Enter the flow rate at maximum head The value for this is 4 274 so press 4 2 7 4 8 4274 Press ENTER The flow rate will be the value shown on the display times 10 Place a 0 label and the GPM label to the right of the display 6 Enter the totalizer scaling To totalize the flow in cubic feet enter 3 4 2 8 9 242 Press ENTER The totalized flow in cubic feet will be the totalizer value x 100 Place two 0 labels and the CF label to the right of the totalizer XXXX Flow Rate 2 16 3020 Flow Transmitter Section 2 Operation and Programming 7 Press SAMPLER OUTPUT to program sampler pacing To enter the number calculated above press 2 5 6 4 10 2564 Press ENTER XXXX Flow Rate 8 Press PLOTTER to set up the output for the plotter The first requirement is to select the units of flow rate dis played on the plotter Press 1 to select GPM 11 1 Press ENTER 9 Enter the number of zeros to the right of the display for flow Since the maximum flow rate was 4 274 in tens of gal lons per minute and the actual flow was 42 740 GPM there is one zero to the right of the display
77. emoglobin of blood Uncon sciousness in 30 min at 0 2 to 0 25 Fatal in 4 hours at 0 1 Head ache in few hours at 0 02 Intestinal upset loss of consciousness possible renal damage respi ratory failure Irritates respi ratory tract Kills most ani mals in a very short time at 0 1 Irritating to the nose Anesthetic effects when inhaled Rap idly fatal at 2 4 Danger ous for short exposure at 1 1 to 2 2 Acts mechani cally to deprive tissues of oxy gen Does not support life Slight symp toms appear upon exposure to 0 002 to 0 004 0 3 rapidly fatal Max Safe 60 Min Exposure ppm 40 000 to 60 000 Max Safe 8 Hour Exposure ppm 5 000 Explosive Range by vol in air Limits lower upper 12 5 74 0 1 000 1 3 6 0 4 0 74 0 6 0 40 0 Likely Location of Highest Concentration At bottom when heated may stratify at points above bottom Near top espe cially if present with illuminat ing gas At bottom At bottom E Most Common Sources Products of com bustion sewer gas sludge Also issues from car bona ceous strata Manufac tured gas flue gas products of com bustion motor exhausts Fires of almost any kind Industrial wastes solvent cleaning Chlorine cylinder and feed line leaks Incom plete com bustion of organics Common air pollut ant fungi cide
78. enter 190 for the totalizer scaling Place three 0 labels and the GAL label to the right of the totalizer 1 Press PRIMARY DEVICE 2 Select units of measure for level To select feet press 1 1 1 Press ENTER 3 Select entry of a user equation from the list of primary devices shown on the front panel Press 3 4 2 34 Press ENTER 4 To enter the value for N1 press 2 5 3 6 3 2536 Press ENTER 5 To enter the value for P1 press 1 decimal 5 4 1 5 Press ENTER 6 To enter the value for N2 press 1 6 9 o 169 Press ENTER 7 To enter the value for P2 press 2 decimal 5 6 2 5 3020 Flow Transmitter Section 2 Operation and Programming Place one 0 label and the GPM label to the right of the display Press ENTER 8 To enter the maximum head press 2 1 2 Press ENTER 9 To program the totalizer in thousands of cubic feet enter 190 Press 1 9 0 9 190 Place 3 0 labels and the GAL label to the right of the totalizer Press ENTER The flow rate and or the level H will be dis played 10 Press DISPLAY MODE and press 1 to display flow rate Press ENTER XXXX Flow Rate 11 Press ADJUST LEVEL to set the current level in feet Press decimal 7 5 H 9 i O the H will flash Press ENTER XXXX Flow Rate 2 27 3020 Flow Transmitter Section 2 Operation and Programming 2 28 3020 Flow Transmitter COO Section 3
79. es connection for submerged probe Level Sensor The probe reference port requires venting to atmospheric pressure either at flow transmit ter or quick disconnect box Connects sub merged probe to flow transmitter Terminal 20 In white Terminal 21 In black Terminal 22 12V red Terminal 23 green and shield 1 7 Technical The technical specifications for the 3020 Flow Transmitter and Specifications 3222 Submerged Probes are found in Tables 1 2 and 1 3 Table 1 2 3020 Flow Transmitter Technical Specifications Size Height x Width x Depth 151 4 x 109 8 x 79 8 38 7 cm x 27 cm x 18 7 cm Weight 10 pounds 4 5 kg Material High impact molded polystyrene structural foam Self certified NEMA 4X enclosure 104 127 VAC 0 075 Amp 50 60 Hz Type Power Overcurrent Protection 1 2 Amp slow blow fuse Display Type 6 character 7 segment alphanumeric backlit liquid crystal Built in Level to Flow Rate Conversions Weirs V notch Rectangular with and without end contractions Cipolletti Display Modes Level flow rate and alternate between level and flow rate Flumes Parshall Palmer Bowlus Trapezoidal H Equation Two term power equation Level to Flow Conversion Accuracy 1 of full scale Sampler Output Isolated contact closure rated 1 Amp at 48 VDC Sampler Input Event marks bottle numbers Analog Output Isolated 4 20 mA into O to 1 000 ohms level or flow rate with or without sa
80. es overflowing the display from the value entered in Step 8 The remote plotter displays flow rate with scientific notation For example a plotter display of 5 57E 3 would equal 5 57 x 10 which is the same as 5 57 x 1 000 and that is 5 570 Step 13 Units of Measure for Totalized Volume on Remote Plotter Again selection 1s dependent on the units of measure selected for a previous step in this case Step 9 Step 14 Zeros to Right of Totalizer 0 to 9 This step allows for the addition of the correct number of trailing zeros to be added to the plotter s totalizer to make meaningful numbers where large 2 9 3020 Flow Transmitter Section 2 Operation and Programming 2 10 flow rates are involved The number selected is the same as the number of zeroes overflowing the display in Step 9 Again these are actually expressed on the plotter s display in terms of scien tific notation so there 1s no need to add stickers to the plotter s display Step 15 Reset Plotter Totalizer to Zero This step allows the user the option to reset the totalizer on the remote plotter It does not affect the mechanical totalizer on the 3020 An example of where this might be used is studies of flow over specific periods of time It might be convenient to reset the flow totalizer between each study This is a user application determined option The totalizer is reset whenever power is turned off Step 16 Display Operation This step offers the
81. ess than 1 000 ohms because that will cause any shock received to be severe or even fatal due to the excellent connection between body and earth ground Instead use a grounding strap with at least one mega ohm resistance which 1s adequate for discharging static while at the same time safe for working with higher voltages Most of the circuitry in the 3020 is made up of CMOS compo nents Because of the oxide gate structure of these devices they are extremely susceptible to destruction caused by the discharge of static electricity through their inputs Many of the driver tran sistors in the 3020 are power MOS devices they are as suscep tible to static damage as CMOS ICs Because of this risk you must take certain precautions when working on these circuits Hazard of Static Electricity The voltage levels present from static buildup caused by walking over carpeted floors movement of woolen or synthetic clothes over chair seats workbenches etc are high enough to destroy CMOS circuitry when performing repair work Ideally you should ground all tools soldering irons etc and you should do repair work on a grounded metal work bench with grounding straps worn on your wrists It is recog nized that in most field repair situations such precautions are impractical However you ought to avoid certain extreme hazards e Never perform any work in a room with a carpeted floor e Always roll up sleeves so that your arms are in contac
82. et Level Installation System Street Level Installation Components 1 Handle 2 Ring Round Pipe Contact the factory or your Teledyne Isco Representative for additional information about the Street Level Installation system 3 12 Completing the Probe Installation 3020 Flow Transmitter Section 3 Installation Mounting hardware may have to be fabricated locally to allow the level sensor to be mounted at the correct location in the primary device The only requirements for custom mounting hardware are e The probe must be securely attached to the side or bottom of the flow stream e The cable must be tied down and led out of the flow stream in an orderly manner e The hardware be made from corrosion resistant materials It should be noted that the mounting rings may be used to install the probe in rectangular channels by simply putting right angle bends in them at the appropriate locations It should be noted that certain flume manufacturers produce flumes with built in cavities designed specifically for use with Isco submerged probe level sensors Typically these are Parshall or Palmer Bowlus flumes Contact the manufacturer for details on these flumes The submerged probe installation is finished by coiling any excess sensor cable and securing it using cable clamps or other means The reference tube inside the cable can be restricted or blocked if the cable is kinked sharply bent or otherwise pinc
83. et for the user to select desired entries for each step of the 3020 program Make several photo copies of this sheet It is suggested that the user circle selected entries with a pencil where numeric values are required they may be written in The Flow Transmitter may then be programmed by entering the values selected on the worksheet M Note Programs will not require entries for every line shown below choosing some entries will make other steps unnecessary Study the explanations given for each program step in Section 2 before attempting to fill out the worksheet Refer to the Sim plified Flowchart Diagram Figure 2 1 for an overview of the Programming sequence The 3020 Flow Transmitter will reject invalid entries Step 1 Select Units feet or meters Step 2 Select Primary Device V NOTCH WEIR RECTANGULAR WEIR WITH END CONTRACTIONS RECTANGULAR WEIR WITHOUT END CONTRACTIONS CIPOLLETTI WEIR 1 PARSHALL FLUME 2 PARSHALL FLUME 3 PARSHALL FLUME 6 PARSHALL FLUME 9 PARSHALL FLUME 10 12 PARSHALL FLUME 11 18 PARSHALL FLUME 12 24 PARSHALL FLUME 13 36 PARSHALL FLUME 14 6 PALMER BOWLUS FLUME 15 8 PALMER BOWLUS FLUME 16 10 PALMER BOWLUS FLUME 17 12 PALMER BOWLUS FLUME 18 15 PALMER BOWLUS FLUME 19 18 PALMER BOWLUS FLUME t 0 10 TPR WD B 1 3020 Flow Transmitter Appendix B Programming Worksheets 20 24 PALMER BOWLUS FLUME 21 30 PALMER BOWLUS FLUME 22 48 PALMER BOWLUS FLU
84. f the standard flow rate equation for the rectan gular weir with end contractions in primary device 2 are for a crest to maximum head ratio of 2 5 to 1 crest length maximum head 2 5 Thus the equation is equal to that in the flow meter only when this ratio is exactly 2 5 However it is accurate within 2 of full scale for crest to maximum head ratios of 2 to 10 If more accuracy than this is needed you must use the special equation This equation is of the general form Q NI H N2 H Where Q flow rate N1 N2 constants H normalized head actual head in feet maxi mum head in feet P1 P2 exponents To change the level to flow rate conversion for a rectangular weir with end contractions into an equation that can program into the 3020 calculate the constants N1 and N2 N1 3 33 L Hmax N2 3 33 0 2 H 29 Where L length of the crest of the weir in feet Hmax maximum head in feet N1 N2 flow rate at maximum head 2 23 3020 Flow Transmitter Section 2 Operation and Programming If a flow rate other than CFS is desired it is necessary to convert these values from CFS to the desired units of measure For example consider a 4 foot rectangular weir with end con tractions and a maximum head of 2 feet For flow rate in CFS the values for N1 and N2 would be N1 3 33 4 21 5 37 67 N2 3 33 0 2 22 5 3 767 For a rectangular weir with end contractions always use
85. foot rectangular weir with end contractions with a maximum head of 2 feet Flow rate will be displayed in GPM Flow will be totalized in cubic feet Assume that the level is 0 75 feet Calculations for example 4 From the tables above find the values for N1 and N2 for a rectangular weir with end contrac tions with a 6 foot crest length and maximum head of 2 feet N1 56 51 N2 3 767 For a rectangular weir with end contractions always use P1 1 5 P2 2 5 Because these values are in CFS we must convert from CFS to GPM by multiplying by 448 8 N1 56 51 x 448 8 25 362 N2 3 767 x 448 8 1 691 Because N1 and N2 must be in the range of 4 999 to 4 999 we must divide both these numbers by 10 N1 25 362 10 2 536 N2 1691 10 169 Therefore we have N1 2 536 P1 1 5 N2 169 P2 2 5 Flow rate at maximum head is N1 N2 56 51 3 767 52 74 CFS or N1 N2 25 362 1 691 23 672 GPM 2 25 3020 Flow Transmitter Section 2 Operation and Programming 2 26 Place one 0 label and the GPM label to the right of the display To totalize in cubic feet we must first calculate the total flow per hour of flow rate at maximum head 52 74 CFS x 60 seconds per minute x 60 minutes per hour 189 864 cubic feet per hour CFH For each count on the totalizer to be equal to 1 000 cubic feet divide by 1 000 189 864 CFH 1000 cubic feet per count 190 counts per hour rounded off Therefore
86. ged probe level sensor are found in Section 3 7 This section covers the wiring only The flow transmitter has two different options for connecting the submerged probe You specify which option you desire when you order the flow transmitter 3020 Flow Transmitter Section 3 Installation Option 1 Direct attachment to the probe connector or to an extension cable In this option the flow transmitter has an external pig tailed 5 pin female M S connector for direct attachment to the probe s 5 pin male M S connector A desiccator cartridge vents the probe s reference port to the atmosphere Use this option where the probe 1s used by itself or with one of the extension cables maximum distance 75 feet Not for conduit installations Option 2 No external connector for the probe The probe 1s hard wired Use this option only with the Quick Disconnect Box as there is no provision for venting the probe s reference port tube Attach the cable from the Quick Disconnect Box to the SUBMERGED PROBE terminals on TS3 maximum distance 1000 feet Shield Wire gt M S Connector for Probe port vent tubing here Figure 3 3 Quick Disconnect Box cover removed 3 2 6 Distances Up to 75 Feet The cable supplied with the submerged probe is 25 feet 7 6 m long Use only with Option 1 At the end of the probe cable is an encapsulated box and a threaded 5 pin male M S connector Plug this connector into the mating M S connector
87. hazard of the cable being damaged 3 7 3020 Flow Transmitter Section 3 Installation 3 4 Connection toa 3 8 Sampler 3 4 1 Sampler Located Within 22 Feet 3 4 2 Sampler Located Over 22 Feet 3 4 3 Connection to a Non Isco Sampler The 3020 can control a sampler in a flow paced sampling mode Flow paced sampling means that the 3020 signals the sampler after a specific flow volume has passed rather than after a period of time In this way the sampler and flow transmitter are able to compensate for varying flow rates The flow transmitter works with any of the Isco samplers listed in Section 1 If you use the 3020 with an Isco sampler in a flow paced sampling system you must connect them together The Flow transmitter sends a signal to the sampler You can connect an Isco sampler and the flow transmitter together two different ways If the Isco Sampler is located within 22 feet of the 3020 Flow Transmitter a 22 foot 7 6 m connect cable is available from Teledyne Isco that has wire terminations on one end and a 6 pin M S Connector on the other The M S connector is plugged into the sampler and the wire terminations are attached to the appro priate terminals of the 3020 There are two wires in the cable Connect the wires to the 3020 as follows Black Sampler Output TS3 White Sampler Output TS3 For distances greater than 22 feet Teledyne Isco has a kit con sisting of a 6 pin M S connector which is to be attached to a use
88. hed The probe cable should be handled and mounted with care Also if there is any appreciable distance between the point where the probe cable leaves the mounting apparatus and the location of the flow meter be sure to attach the cable to the flow stream wall to prevent it from vibrating moving around tangling or possibly collecting debris N CAUTION Under no circumstances should you leave any extra length of sensor cable dangling freely in the flow stream where it could trap debris or become tangled Use gloves and eye protection when assembling and installing the rings in a pipe Though deburred the edges of the stain less steel can cut if improperly handled Please read the infor mation on how best to install this device Observe general safety procedures when entering any man hole See General Safety Procedures in the back of the man ual for more information on general hazards and necessary precautions 3 19 3020 Flow Transmitter Section 3 Installation 3 20 3020 Flow Transmitter SSS SSS SSS SSS Section 4 Options and Accessories 4 1 High Low Alarm Relay Box This section of the 3020 Instruction Manual describes optional equipment available for use with the flow transmitter and how to connect the options to the 3020 The following user installed options are available e High Low Alarm Relay Box e Remote Totalizer e Quick Disconnect Box e Extension Cables for the Submerged Probe Level Sensor e 2410
89. high velocities because its shape overcomes hydraulic problems that develop in these flow streams At veloc ities exceeding 5 feet per second 1 5 meters per second localized low pressure areas form near the submerged probe which can result in erroneous level readings The length of the nose section 3 87 inches or 9 84 cm minimizes low pressure areas by allowing the flow stream to stabilize before it reaches the probe s entrance ports Slanted Nose Section Under certain conditions low flow rates in debris laden small sewers for example the submerged probe may catch and retain the debris obstructing the flow stream and causing erroneous level readings To avoid this problem use the slanted nose section This nose section has a slanted leading edge that tends to shed debris more readily than the standard nose section Use the slanted nose section with caution however Under condi tions of low flow and high velocity the slanted nose section may induce a hydraulic jump in the flow stream that can cause erro neous level readings 3 11 3020 Flow Transmitter Section 3 Installation 3 9 1 Attaching the Nose Section Flume Cap The flume cap is a small blunt cap that replaces the nose section Most flume manufacturers can supply flumes with a small cavity to accept an Isco probe The probe cap pro tects the transducer while minimizing the total length After cleaning reinstall the nose section and tighten the screws
90. ic value for steps requiring a value be selected from a given range A six digit LCD Liquid Crystal Display prompts the user through setup displays the choice for the current programming step and displays level and flow rate The 3020 Flow Transmitter may be used with the following equipment Interfacing e 3700 and 6700 Series Portable and Refrigerated Samplers e GLS Compact Portable Sampler e Glacier Refrigerated Compact Sampler e 2410 Circular Chart Recorder Optional Accessories e Resettable 7 digit mechanical flow totalizer A non resettable flow totalizer is a standard feature of the 3020 e High Low Alarm Relay Box e Extension Cables for the submerged probe in lengths of 25 and 50 feet 7 6 15 2 m e Quick Disconnect Box Allows probe installation up to 1000 feet 304 8 m from flow transmitter e Expansion rings and extension plates for mounting probe e Remote Totalizer e Flow Transmitter to Sampler Connect Cable The submerged probe used by the 3020 Flow Transmitter as a level sensor is shown in Figure 1 2 and is mounted in the flow stream It measures liquid level by sensing changes in hydro static pressure as level increases or decreases above it The sub merged probe consists of a differential IC integrated circuit pressure transducer mounted inside the probe assembly and a shielded cable which connects the submerged probe to an encap sulated electronics package containing an amplifier The pr
91. icroprocessor is 32 F 0 C 4 1 3 Wiring the Alarm Box 3020 Flow Transmitter Section 4 Options and Accessories Connecting the Alarm Box to a flow transmitter requires three wires A three wire cable typically has the following wires in it black white and another color such as red or green Connect the wires as follows Table 4 1 3000 Series Wiring Instructions Terminals in 3000 Series Flow Transmitter 2312 INTERFACE 12VDC 2312 INTERFACE 12VDC 2312 INTERFACE OUT DATA Terminal Wire Terminals in Strip Colors Alarm Box You can use up to four alarm boxes with the same flow trans mitter Wire all the boxes in PARALLEL to the same connec tions shown in the table above The wire colors shown are for example only Any color of wire or cable is acceptable but make sure the connections end up the same as those shown The maximum recommended distance between the 3020 and the alarm box is 250 feet 76 meters The recommended wire gauge for interconnection cable is 18 AWG In electrically noisy envi ronments Teledyne Isco suggests use of shielded cable To connect external devices to the high level or low level alarm relay Use NO and COMM for devices to turn ON when the alarm trips Use NC and COMM for devices to turn OFF when the alarm trips Wire gauge and the length of the cable run depend on the device being controlled Recommended limits for wiring to the relay contacts only are 1000 feet maximum cable
92. ing is an article written by Dr Richard D Pomeroy and published in the October 1980 issue of Deeds amp Data of the WPCF Dr Pomeroy is particularly well known for his studies over a period of nearly 50 years in the field of the control of hydrogen sulfide and other odors in sewers and treatment plants He has personally worked in a great many functioning sewers In the earlier years he did so he admits with little knowledge of the grave hazards to which he exposed himself It is gratifying that the subject of hazards to people working in sewers is receiving much more attention than in past years and good safety procedures are prescribed in various publications on this subject It is essential that people know and use correct pro cedures It is less important to know just what the hazardous compo nents of sewer atmospheres are as safety precautions should in general be broadly applicable but there should be a reasonable understanding of this subject It is disturbing to see statements in print that do not reflect true conditions One of the most common errors is the assumption that people have died from a lack of oxygen The human body is able to function very well with substantially reduced oxygen concentra tions No one worries about going to Santa Fe New Mexico elev 2 100 meters where the partial pressure of oxygen is equal to 16 2 a normal atmosphere is about 21 oxygen When first going there a person may ex
93. ipment is not available the manhole should be assumed to contain an unsafe atmosphere and forced ventilation must be provided It should never be assumed that a manhole is safe just because there is no odor or the manhole has been entered previously 4 Entering Manholes Since the top of the manhole is usually flush with the surrounding surface there may not be anything for the person who is entering the manhole to grab on to steady himself Persons who are entering manholes should not be per mitted to carry anything in their hands as they enter the manhole to ensure that their hands will be free to hold on or grab if they slip A good method for entering a manhole is to sit on the surface facing the manhole steps or ladder with the feet in the hole and the arms straddling the opening for support As the body slides forward and downward the feet can engage a rung and the back can rest against the opposite side of the opening If there is any doubt about the soundness of the manhole steps a portable ladder should be used A person should never enter a manhole unless he is wearing per sonal safety equipment including a safety harness and a hard hat Two persons should be stationed at the surface continuously while anyone is working inside a manhole to lift him out if he is overcome or injured One man cannot lift an unconscious man out of a manhole The persons stationed at the surface should 3020 Flow Transmitter Appendix C Gene
94. iscussions of safety procedures are only general guidelines Each situation in which you install a flow meter varies You must take into account the individual circumstances you are in Additional safety considerations other than those discussed here may be required The following procedures are those used by Black amp Veatch a respected consulting firm and are published here by permission Field personnel must keep safety uppermost in their minds at all times When working above ground rules of common sense and safety prevail However when entering manholes strict safety procedures must be observed Failure to do so could jeop ardize not only your own life but also the lives of other crew members 1 Hazards There are many hazards connected with entering manholes Some of the most common hazards are Adverse Atmosphere The manhole may contain flammable or poisonous gases or the atmosphere may be deficient in oxygen Forced ventilation may be necessary Deteriorated Rungs Manhole steps may be corroded and not strong enough to support a man It may be difficult to inspect the rungs because of poor lighting Traffic Whenever manholes are located in the traveled way barricades and warning devices are essential to direct traffic away from an open manhole Falling Object Items placed near the manhole opening may fall and injure a worker in the manhole 3020 Flow Transmitter Appendix C General Safety P
95. ising dust Wash with soap and water after handling Section 7 Handling and Storage Handling Avoid raising dust and minimize the contact between worker and the material Practice good hygienic work practices Storage Store in a cool dry location Keep in sealed containers away from moisture The silica gel will readily adsorb moisture D 5 3020 Flow Transmitter Appendix D Material Safety Data Sheets Section 8 Exposure Controls Personal Protection Engineering Controls Use exhaust ventilation to keep the airborne concentrations below the exposure limits Respiratory Protection Use NIOSH approved respirator when the air quality levels exceed the TLV s Skin Protection Light gloves will protect against abrasion and drying of the skin Eye Protection Safety glasses Component Name Exposure Limits OSHA ACGIH Other PEL TLV Recommended Limits Silica gel TWA 20 mppcf TWA 10 mg m NIOSH REL 80 mg m SiO TWA 6 mg m IDLH 3000 mg m Phenolphthalein Not Applicable Not Applicable Not Applicable Section 9 Physical and Chemical Properties Appearance Yellow beads or granules Vapor Density Not applicable Odor None Boiling Point 4046 F 2230 C Physical State Solid bead Melting Point 3110 F 1710 C PH Not applicable Solubility Insoluble in water Vapor Pressure Not applicable Specific Gravity 2 1 Section 10 Stability and Reactivit Stability Stable Conditions t
96. it is dirty Refer all other repairs to qualified service personnel or organizations If you suspect an electronic problem Teledyne Isco strongly rec ommends that you call the Teledyne Isco Customer Service Department 800 228 4373 or 402 464 0231 outside the U S A The Customer Service Department will advise you how to return the 3020 to the factory The Teledyne Isco Technical Service Department has trained technicians and specially designed equipment necessary for timely efficient repair of the 3020 If you wish to attempt repairs the Teledyne Isco Technical Service Department is available to provide advice and information on servicing When attempting to isolate problems within the unit assume the CPU and memory are working properly until attempts to find problems in the rest of the circuitry have been exhausted This is for two reasons first the likelihood of failure is far greater on transistor drive circuits heavier currents pass through here than on the CPU or memory Second it is doubtful whether the repair facility would have the time or equipment to do worth while troubleshooting beyond changing components on the CPU or memory Following are suggested areas to check before attempting to service the microprocessor CPU and associated circuitry e Check the fuse and the 120 VAC supply for the flow transmitter Sometimes equipment appears to have failed completely when the real problem is only disconnection of the AC
97. iver or a probe at least two inches back from the end Twist the wires of the shield together to form a single conductor Using a suitable cable Belden 8424 in this instance the fol lowing list of wire colors can be matched color for color at the Quick Disconnect Box and the flow transmitter With the Quick Disconnect Box installed so the desiccator is on the bottom connect to the terminal strip inside the box from left to right as follows Refer to Figure 1 4 for location of TS3 Terminal 1 Shield 12V TS3 Terminal 2 White IN PROBE TS3 Terminal 3 Black IN PROBE TS3 Terminal 4 Red 12V TS3 Terminal 5 Green 12V TS3 Terminal 6 No Connection M Note IMPORTANT The cable used in this example Belden 48424 has a braided shield wire If the cable you are using is unshielded you must connect a jumper wire from Terminal 1 Shield to Terminal 5 Green Even if the cable between the Quick Disconnect Box and the Flow Transmitter is unshielded the cable between the probe and the Quick Disconnect Box is shielded and must be terminated appropriately The cable from the Quick Disconnect Box attaches to the last four terminals of TS3 on the right side of the flow transmitter terminal strip board They are labeled SUBMERGED PROBE IN IN and 12 V The signals are low energy consisting of a variable DC level on the submerged probe inputs and 12 VDC on the other two wires The wiring should be installed in conduit if there is any
98. lar weir with end contractions were selected for a crest to maximum head ratio of 2 5 to 1 crest length divided by maximum head equals 2 5 This gives an equation equal to that in the flow transmitter only when this ratio is met However it is within 2 of full flow accuracy for crest to maximum head ratios of 2 to 10 If more accuracy is required then you must select 34 the equation See Section 2 4 3 Press ENTER The equation programmed into the 3020 is in the general form Q NI H N2 H Where Q flow rate N1 N2 constants for the programmed equation H normalized head actual head in feet maxi mum head in feet P1 P2 exponents Your own specific equation will begin in the form Q nl h n2 hP Where Q flow rate nl n2 constants for your equation h actual head in feet P1 P2 exponents To convert your equation into the one that you will program into the 3020 you must calculate the constants N1 and N2 N1 n1 H 4 Pl N2 n2 H axP 2 19 3020 Flow Transmitter Section 2 Operation and Programming 2 20 2 4 4 Programming Example Using an Equation Where H mnax maximum head in feet N1 N2 flow rate at maximum head The following example involves programming the 3020 with an equation The installation has a device whose level to flow rate conversion follows the equation Flow 4 3 x level 0 6 x level GPS The maximum head is 2 5 feet Flow rate wi
99. larly sized manhole inverts you can use the base and extension sections of the Universal Mounting Ring without the scissors section The straps are held in place by studs installed in the wall of the flow stream using a power activated stud gun Submerged probes are also installed in primary measuring devices The location of the probe in the stream is usually dependent on the flow rate conversion used For example if you are using the probe with a primary measuring device WEIR FLUME flow con version when programming the 3020 there is a specific location for the probe with each primary device The sco Open Channel Flow Measurement Handbook provides much useful information in this regard 3 9 3020 Flow Transmitter Section 3 Installation If you want to measure flow using a gravity flow equation such as the Manning equation you will generally install the probe in the entrance upstream pipe of a manhole If you want to measure flow by calibrating a manhole invert you would probably locate the probe directly in the manhole invert In any case you must determine the appropriate location of the probe based on the hydraulic characteristics of the site and the method of level to flow rate conversion used You do not have to install the submerged probe at the bottom of the flow stream Although the bottom is the normal position the Adjust Level step in the program allows you to mount the probe at any vertical location in the stre
100. le and this may be necessary in some instances such as when the wire run is long or where high electrical back ground noise is a problem Where you make the installation with conduit do not run the signal wires in the same conduit with AC power wiring Connect the cable to the 20 MA OUTPUT terminals of the 3020 Note which color conductor is on which terminal For example if the wires are black and white connect the black wire to the ter minal of the 20 MA OUTPUT and the white wire to the ter minal of the 20 MA OUTPUT Next locate TB2 in the lower right corner of the 2410 cabinet Connect the wire black in this example to terminal 1 of TB2 and the wire white in this example to terminal 2 of TB2 Refer to the manual supplied with the 2410 for further information 4 6 3020 Flow Transmitter ee Section 5 Maintenance and Troubleshooting 5 1 Care of the Flow Transmitter Case 5 1 1 Case Seal 5 1 2 Preventing Moisture Damage This section of the 3020 Instruction Manual provides instruc tions on maintenance necessary to keep the flow transmitter in top operating condition There are sections on cleaning the flow meter case and maintaining the submerged probe level sensor and its desiccator accessing mechanical and electrical compo nents fuse replacement and the repair of CMOS circuitry Also included are a troubleshooting section a replacement parts list and an accessory parts list Teledyne Isco recommends be
101. ll be displayed in GPS The totalizer will totalize in gallons The display will be set to alternate between level and flow rate Assume the level is 0 75 feet Calculations for example 3 From the equation we can see that nl 4 3 P1 2 5 n2 0 6 P2 1 3 We also know that H max 2 5 We must calculate N1 and N2 N1 n1 H 4 F 4 3 2 575 4 3 9 88 42 49 N2 n2 H ax 2 0 6 2 5 0 6 3 29 1 97 Therefore the values programmed into the 3020 are N1 42 49 P1 2 5 N2 1 97 P2 1 3 These values correspond to the equation Q 4249H 1 97H GPS Flow rate at maximum head is N1 N2 42 49 1 97 44 46 GPS Place the GPS label to the right of the display 3020 Flow Transmitter Section 2 Operation and Programming To totalize in gallons find the flow at maximum head in gallons per hour 44 46 GPS x 60 seconds per minute 6 60 minutes per hour 160 056 gallons per hour GPH To make each count on the totalizer equal to 1000 gallons divide 160 056 GPH by 1 000 160 056 GPH 1 000 gallons per count 160 counts per hour The result 160 is the value entered into the 3020 Place three 0 labels and the GAL label to the right of the totalizer 1 Press PRIMARY DEVICE 2 Select units of measure for level To select feet press 1 g Press ENTER 3 Select entry of an equation 34 from the list of primary devices shown on the front panel press 3 4 2 34 Press ENTER 4 T
102. lume d f 2 3 6 9 oe 18 24 96 14 22 Palmer Bowlus Flume 14 6 15 8 10 12 sTo 18 24 90 48 Q KH xx Q KH Q KH Q KH Q KH Q KH Q KH Q KH Q KH 23 25 Trapezoidal Flume 23 Large 60 V 24 2 45 WSC 25 12 45 SRCRC 26 32 H Flume 26 0 5 2125 28 1 0 29 1 5 30 2 0 31 3 0 32 4 5 Palmer Bowlus and Trapezoidal Flumes manufactured by Plasti Fab Tualatin Oregon Flow equations for Palmer Bowlus H and Trapezoidal Flumes are approximations that fit data within 196 of full scale flow rate 2 4 Programming Examples 2 4 1 Programming fora Parshall Flume 3020 Flow Transmitter Section 2 Operation and Programming In the following sections programming examples are described to show with keystroke entries how the 3020 Flow Transmitter is set up for proper operation in specific applications When pro gramming the flow transmitter note that the number on the left side of the display is the PROGRAM STEP while the number on the right is the current value In this example we will go through the programming steps nec essary to select a 6 Parshall flume with a maximum head of 1 5 feet Flow rate will be displayed in GPM The flow rate at maximum head in GPM is 1754 GPM This value is available either from the manufacturer of the flume or can be found in the Isco Open Channel Flow Measurement
103. m placed over the transducer In the unlikely event that all entrance ports in the submerged probe housing become blocked with material that does not permit the pressure above the probe to be transmitted to the pressure transducer you may clean the probe with the following procedure 1 Remove the submerged probe and its mounting apparatus from the flow stream 2 Scrape any accumulated solids off the exterior of the sub merged probe body with a brush 3 Gently flush the inside cavity of the submerged probe with water Do not use brushes or tools to try to remove matter lodged in the submerged probe s ports or cavity 4 If the ports are clogged and do not clear with the running water you may have to carefully disassemble the sub merged probe If you cannot clean the submerged probe sufficiently by washing and brushing the exterior or if you want to completely clean the unit prior to long term storage remove the probe from the flow stream and proceed as follows 1 Clean the exterior of the submerged probe with a stiff brush and flowing water 2 Remove the submerged probe nose section by unscrewing the two flat head screws that hold the nose section in place 3 Pull the nose section straight out of the probe body 4 Flush the probe cavity with gently flowing water to wash out any accumulated solid materials 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting Figure 5 1 Warning Disk Inside Probe Ag
104. mpler event marks Accuracy 1 of full scale Serial Data Port Compatible with Isco Model 2312 Plotter no longer sold and High Low Alarm Relay Box Compatible Isco Recording Device 2410 Circular Chart Recorder 2312 Plotter no longer sold Totalizer 7 digit mechanical counter non resettable I O 3020 Flow Transmitter Section 1 Introduction Table 1 2 3020 Flow Transmitter Technical Specifications Continued External Totalizer Output 12 VDC pulse Operating Temperature 20 F to 140 F 30 C to 65 C Storage Temperature 50 F to 150 F 60 C to 65 C Table 1 3 3222 Submerged Probe Technical Specifications Physical Specifications Dimensions 7 8 diameter x 91 2 long 2 2 x 24 1 cm 3 Ib including amplifier box and cable 1 4 kg Body Material CPVC chlorinated polyvinyl chloride housing stainless steel Operating Temperature 32 to 160 F 0 to 71 C Storage Temperature 40 to 160 F 40 to 71 C Maximum Distances Standard Sensor 75 feet 22 7 m with optional extension cables between flow meter and level sensor 1 000 feet 305 m with optional Quick Disconnect Box Level Measurement Specifications Measurement Range Standard Sensor 0 1 to 10 0 ft 0 03 to 3 05 meters Maximum Level Standard Sensor 20 0 ft 6 1 m Measurement Accuracy 0 033 to 5 0 ft 0 008 ft ft 0 01 to 1 52 m x0 008 m m 25 0 ft 0 012 ft ft 21 52 m 0 012 m m Q 77 F 25 C Includes non
105. n by placing the ties through the holes in the mounting ring and then locking them around the cable as shown To prevent debris from catching on the cable it is important to attach the cable to the mounting ring so it offers as little resistance to the flow as possible 3 13 3020 Flow Transmitter Section 3 Installation Figure 3 7 Spring Ring Preparation Figure 3 8 Mounting Ring in a Round Pipe 3 14 N CAUTION Make sure the sensor cable is securely fastened along the back downstream edge of the ring Otherwise the sensor may provide inaccurate level readings under conditions of high velocity Do not overtighten the plastic cable ties they should be tight ened just enough to secure the cable in place without greatly indenting the cable Overtightening the plastic ties may col lapse the reference tube in the cable blocking it 3 10 2 Scissors Rings 3020 Flow Transmitter Section 3 Installation The spring ring may need anchoring Under conditions of high velocity greater than 5 feet per second or 1 5 meters per second the ring may not have sufficient outward spring force to maintain a tight fit inside the pipe The ring may start to lift off the bottom of the pipe in a waving fashion or may even be carried downstream This problem is more prevalent in the larger diameter pipes 10 12 and 15 and in pipes with smooth inside surfaces such as plastic pipes If any of these conditions are present
106. ng enough current to kill e Use a GFCI protected outlet If you cannot find an isolation transformer at least make sure the AC power source is protected by a GFCI Ground Fault Circuit Interrupter breaker or outlet If there is accidental grounding the GFCI will trip quickly stopping the current flow e Avoid working on the terminal board while it is connected to AC Make use of visual and low voltage continuity and resis tance checks as much as possible on this circuit board 5 7 3 Precautions for Servicing CMOS Circuitry 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting e f you must work on the terminal board with power applied use extreme caution Do not touch any part of the high voltage side of the circuit TS1 fuse and transformer primary with fingers or hands Use insulated tools only Remember that the voltage here 1s potentially fatal whether grounding 1s involved or not Note that in general the components on the terminal board other than the fuse are relatively unlikely to fail It would be more worthwhile to concen trate troubleshooting on the CPU circuit board Use of an isolation transformer will eliminate the possi bility of shocks resulting from accidental grounding Use of a GFCI will disconnect the power source quickly in case of an accidental ground While wrist grounding is necessary for the safe servicing of CMOS components see the following section do not use a hard ground l
107. ns displays level Power 3 8 screws on Block TS1 Connects 120 240 VAC power to flow trans Large Terminals 1 2 and 3 mitter 1 Hot 2 Ground 3 Neutral 4 20 mA Output 2 6 Screws on Block TS2 Provides standard 4 20 mA current loop out put variable with level or flow rate to be used to control compatible equipment such as a chart recorder or a chlorinator Remote Totalizer 2 6 screws on Block TS2 Connects flow transmitter to external Temmet and mechanical remote totalizer Terminals 4 and 5 1 5 3020 Flow Transmitter Section 1 Introduction Table 1 1 3020 Controls Indicators and Terminal Blocks Continued 2312 Interface 3 6 screws on Block TS2 Originally for connecting the 3020 to the l Model 2312 strip chart plotter obsolete Terminals g data Rss TO Currently used for connecting to other exter nal serial devices or an alarm relay box Bottle Number BLT 2 6 screws on Block TS2 Provides bottle number input signal to flow transmitter from an Isco automatic wastewa Terminals 11 bottle and 12 common ter sampler Event Mark 2 6 screws on Block TS 2 Provides Event Mark input signal to flow Terminal 13 12 VDC transmitter from an Isco Wastewater Sam pler Terminal 14 Event Mark Sampler Output 2 6 screws on Block TS3 Provides flow pulse from flow transmitter to enable flow pace an Isco sampler Terminal 15 p p Terminal jg oe ou Submerged Probe 4 6 screws on Block TS3 Provid
108. o avoid Moisture and high humidity environments Incompatibility Water fluorine oxygen difluoride chlorine trifluoride Hazardous Decomposition Products None Hazardous Polymerization Will not occur D 6 3020 Flow Transmitter Appendix D Material Safety Data Sheets Section 11 Toxicological Information This product and its components are not listed on the NTP or OSHA Carcinogen lists Animal Toxicology Tests for DOT Hazard classification Tests Conducted on finely ground silica gel 1 hour LC5o rat gt 2 mg 1 48 hour oral LDs rat est gt 31 600 mg kg 48 hour dermal LDs rabbit est gt 2 000 mg kg Considered an ocular irritant Human Toxicology Silica gel is a synthetic amorphous silica not to be confused with crystalline silica Epidemiological studies indicate low potential for adverse health effects In the activated form silica gel acts as a desiccant and can cause a drying irritation of the mucous membranes and skin in cases of severe exposure Multisorb Technologies Inc knows of no medical conditions that are abnormally aggravated by exposure to silica gel The primary route of entry is inhalation of dust Section 12 Ecological Information Not known to have any adverse effect on the aquatic environment Silica gel is insoluble and non toxic Section 13 Disposal Information Disposal Information If this product as supplied becomes a waste it does not meet the criteria of a hazardou
109. o blank flow pulses to the sampler will stop as will the mechanical totalizer and the totalizer signal sent to an external 2312 Plotter if used which will be reset The unit will be unable to recognize changes in level during the time power is off However the program selections made during setup will be retained and when power is restored it will not be nec essary to reprogram the flow transmitter The flow transmitter s program is stored in memory The 3020 Flow Transmitter is programmed with the aid of the display The keypad is used to enter program quantities and to control certain flow transmitter functions The display is used to show selections chosen The number of the selected entry will show on the display The display also indicates operational status and guides the user through the flow transmitter pro gramming sequence by showing the step being programmed Each time a key is pressed an audible signal is emitted Refer to Figure 2 1 for a simplified flowchart showing the programming procedure At the back of this manual is a worksheet on which program selections may be written First the user should remember that the flow transmitter always has a program stored in memory even if it is only the default program installed at the factory In programming the 2 3 3020 Flow Transmitter Section 2 Operation and Programming 2 4 3020 first select one of the yellow FUNCTION KEYS and press it The display will show th
110. o enter the value for N1 press 4 2 decimal 4 9 3 42 49 Press ENTER 5 To enter the value for P1 press 2 decimal 5 4 2 9 Press ENTER 6 To enter the value for N2 press 1 decimal 9 7 o 1 97 Press ENTER 7 To enter the value for P2 press 1 decimal 3 6 1 3 Place the GPS label to the right of the display Press ENTER 2 21 3020 Flow Transmitter Section 2 Operation and Programming 8 To enter the maximum expected head for the above equa tion press 2 decimal 5 i 229 Press ENTER 9 To program the totalizer enter the constant calculated above by pressing 1 6 0 9 160 Press ENTER The totalizer will now totalize in thousands of gallons Place 3 0 labels and the GAL label to the right of the totalizer XXXX Flow Rate 10 Press DISPLAY MODE and press 3 to set the display to alternate between flow rate and level 16 3 Press ENTER XXXX Flow Rate H XXXX H Height or level 11 Press ADJUST LEVEL Enter the value for the head by pressing decimal 7 5 H 9 Press ENTER XXXX Flow Rate 2 22 2 4 5 Rectangular Weirs with End Contractions 3020 Flow Transmitter Section 2 Operation and Programming H AXAXA TIU The conversion for rectangular weirs with end contractions 1s l Q 333 L 02h h CFS Where Q flow rate in CFS h actual head in feet L length of the crest of the weir in feet The coefficients o
111. oard 5 8 2 CPU Board 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting The 3020 is a microprocessor based instrument that executes a program stored in memory The circuitry hardware is discussed below Because of the difficulty and specialized equipment nec essary to check program software its detailed description is beyond the scope of this manual The 3020 contains several printed circuit boards The keypad is mounted under an alu minum plate just behind the top front panel It connects to the CPU board with a cable and connector The CPU and display are inside the chassis in the top section of the flow transmitter The display is attached to the CPU board The terminal strip board is mounted in the bottom section of the flow transmitter cabinet under a protective cover All field and power wiring brought into the flow transmitter is connected to this board Connectors carry power and various signals to the CPU board which is mounted in the upper half of the flow trans mitter cabinet in an aluminum housing Switch SW1 selects the input power voltage 120 or 240 volts N WARNING Hazard of electrocution You can be killed if you touch the AC connections exposed on this board Do not attempt troubleshooting with power connected Otherwise Teledyne Isco recommends only visual inspection or simple continuity checking with no power applied to the board AC power enters the board on TS1 and energizes the transformer
112. oard is covered with a protective shield to prevent accidental shock from touching the AC wiring below First remove the four Phillips screws holding the lower section face plate to the cabinet This will expose the protective cover over the terminal PCB Remove the four screws from the pro tective cover Pull out the cover The terminal PCB is now acces sible N WARNING Electrocution Hazard You can be killed if you touch 120 VAC connections exposed on this board Do not wire or attempt troubleshooting with power connected Disconnect power at the breaker panel or cutoff switch before changing the fuse wiring or removing the circuit boards First remove the four screws holding the upper section face plate to the cabinet Carefully lift off the plate The main circuit board is inside the aluminum housing See Figure 5 4 Remove the screws holding the aluminum housing Lift off the aluminum housing Note the two connectors with cables coming from the lower section of the case Disconnect them at either end by pulling vertically from the board 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting N CAUTION The 3020 circuit boards contain CMOS semiconductors which are easily destroyed by the discharge of static electricity Do not attempt troubleshooting or repair at the job site Return the board to the factory for servicing or make repairs at an appro priately equipped service area See also Section 5 7 3 2
113. obe body contains several ports which carry the hydrostatic pressure of the flow stream directly to the transducer surface The cable contains not only the power and signal wires but also a hollow vent tube which serves to reference the differential port of the pressure transducer to atmospheric pressure ground wire in the cable keeps the flow transmitter ground and the 3020 Flow Transmitter Section 1 Introduction grounding point of the submerged probe at the same electric potential Circuitry inside the 3020 converts pressure changes sensed by the submerged probe into level and flow rate Figure 1 2 Submerged Probe Level Sensor shown with standard tip 1 5 Labels Adhesive labels are provided with the 3020 to allow the display and the mechanical totalizer to express values which are greater than the number of digits available in the unit Where extremely large flow volumes are involved trailing zeroes may be added to the display to make more meaningful numbers Labels for units of measure are also provided to serve as a visual reminder for what units of measure the 3020 was programmed N CAUTION If the submerged probe is disassembled for cleaning do not touch the exposed stainless steel diaphragm inside the probe with either fingers or instruments The transducer mounted behind the diaphragm in silicone oil is fragile The diaphragm is made from very thin material 0 003 thick Deforming it even slightly may cause a
114. occasionally traces of carbon monoxide Physiological Effect Will not support life Inflammation of the eyes 400 to 500 ppm imme diately fatal At 200 500 ppm headache nau sea bad taste lassitude Eye irritation Headache diz ziness nausea irritation of the kidneys Narcotic in high concentrations less toxic than benzene Max Safe 60 Min Exposure ppm No data Would Max Safe 8 Hour Exposure ppm vary widely with composition Explosive Range by vol in air Limits lower upper 3020 Flow Transmitter Appendix C General Safety Procedures Likely Location of Highest Concentration Near top of structure At bottom can combine with water to form sulfurous acid At bottom At bottom At bottom Most Common Sources From digestion of sludge Industrial waste combus tion com mon air pollutant Solvent Solvent used in paint Solvent Simplest and Cheapest Safe Method of Testing See compo nents Detectable taste and odor at low concen tration Combustible gas indicator 1 Detectable odor at low concentration s 2 Combustible gas indica tor Combustible gas indicator C 9 3020 Flow Transmitter Appendix C General Safety Procedures D 1 Overview 3020 Flow Transmitter Appendix D
115. ologies Inc MATERIAL SAFETY DATA SHEET Effective Date March 8 2005 MSDS Number M163 Section 1 Product and Company Information Product Name Silica gel indicating yellow Product Use Desiccant absorbent Grades Silica gel indicating Synonyms Amorphous silica gel SiO silicon dioxide amorphous Company Multisorb Technologies Inc Street Address 325 Harlem Road City State Zip Country Buffalo NY 14224 1893 USA Telephone Number 716 824 8900 USA Monday Friday 8 00 5 00 EDT Fax Number 716 824 4091 USA Website E Mail multisorb com Section 2 Composition Information on Ingredients Component Name CAS Number by Weight Synthetic amorphous silica gel S10 112926 00 8 100 Phenolphthalein 71 09 08 100 ppm While this material 1s not classified this MSDS contains valuable information critical to the safe handling and proper use of this product This MSDS should be retained and available for employees and other users of this product Section 3 Hazard Identification Emergency Overview A yellow bead or granular material that poses little or no immediate hazard This material is not combustible Potential Health Effects Eyes Dust and or product may cause eye discomfort and irritation seen as tearing and reddening Skin The product dust may cause drying of the skin Silica gel may get hot enough to burn skin when it adsorbs moisture rapidly Use an excess of water to cool the silica g
116. option of choosing the method of display which 1s most useful for a par ticular application Choose between 1 Flow Rate or 2 Level being displayed or select 3 Alternate which will cause the display to switch between level and flow rate This step defines the display when the flow transmitter is in normal operation The appearance of the letter H on the left side of the display des ignates level or Head Step 17 4 20 mA Output Operation This step determines how associated external equipment connected to the 3020 through the 4 20 mA current loop will operate The selection of 1 Flow Rate and 3 Level are user application specified The selections of 2 Flow Rate with Event Mark and 4 Level with Event Mark are specifically intended for use only with the Isco 2410 Circular Chart Recorder to indicate on the chart that an associated waste water sampler has taken a sample N CAUTION Do not transmit level or flow rate with event marks to any equipment other than a circular or strip chart recorder Transmission of event marks causes momentary jumps of the 4 20 mA loop current to 100 full scale operation This could cause erratic operation of some process control equipment and could possibly have hazardous consequences with certain equipment This output which is a variable DC current of 4 20 mA changes with the level or flow rate measured by the 3020 4 mA 0 flow or 0 level 20 mA 100 flow rate full scale or maximum head
117. or if movement of the mounting ring is detected or suspected you must anchor the ring in place You can do this by setting screws through the ring into the pipe or by other appropriate means If there is a problem with the smaller diameter rings it may be suf ficient to simply increase the outward spring force of the ring by bending it into a less round configuration For pipes larger than 15 in diameter Teledyne Isco offers the adjustable Scissors Ring also known as the Universal Mounting Ring This device consists of two or more metal strips that lock together with tabs to form a single assembly There is a base section where the sensors are mounted one or more extension sections usually and a scissors section at the top that expands the entire assembly and tightens it inside the pipe The scissors mechanism includes a long screw that increases the width as it is tightened The assembled rings fit pipe diameters from 16 to 80 Secure the unit in place by tightening the scissors mechanism with a 3 8 socket wrench or other suitable tool Ring sections are 040 thick half hard 301 stainless steel sheet All other parts are also stainless steel except for the plastic cable ties in the hardware kit Each extension 1 2 3 and 4 adds 9 0 21 5 31 5 or 41 5 respectively to the circumference of the ring Used alone the base section fits pipe that is approximately 16 to 18 in diameter The 9 0 the smallest extension exi
118. ou have no way of knowing it is there Once the drops form they are very dif ficult to remove You could try compressed air if the water is inside an extension cable since that has open connectors on both ends However you cannot blow water out of the probe cable since it is only open on one end Over time moisture in the probe reference line can cause permanent internal damage You can avoid this serious problem completely with a little maintenance Also consider that the desiccant cartridge serves as a filter to keep out solids such as dirt or small insects which can also block the line The submerged probe and its cable require little periodic mainte nance unless there is a great deal of debris in your flow stream Certain materials that swell when wet such as sawdust can clog the ports of the probe blocking the hydrostatic pressure of the stream from reaching the transducer The submerged probe pressure transducer is in a stainless steel housing filled with sil icone oil The transducer is directly behind a thin stainless steel dia phragm that faces the nose section of the probe If you remove the nose section from the submerged probe to clean it this dia phragm will be exposed Read the following sections carefully before attempting to disassemble the probe N CAUTION If you disassemble the submerged probe for cleaning do not touch the stainless steel diaphragm with your fingers or tools The diaphragm is very thin 0
119. oughing Asphyxiant 100 ppm dan gerous 200 ppm fatal Normal air con tains 20 8 of Ov Man can tol erate down to 1296 Minimum safe 8 hour exposure 14 to 1696 Below 1096 dangerous to life Below 5 to 796 probably fatal Max naturally occurring level is 0 04 ppm 0 05 ppm causes irrita tion of eyes and nose 1 to 10 ppm causes headache nau sea can cause coma Symp toms similar to radiation dam age Near bottom Variable at dif ferent levels Near bottom from some rock strata Industrial wastes Common air pollut ant Oxygen depletion from poor ventila tion and absorp tion or chemical consump tion of oxygen Where ozone is used for disinfec tion NO detector tube Oxygen defi ciency indica tor Detectable odor at 0 015 ppm Sludge Gas Sulfur Dioxide Chemical Formula Common Properties Mostly a simple asphyxiant May be practically odorless taste less Colorless pun gent odor Suffo cating corrosive poisonous non flammable Colorless ben zene like odor Colorless Char acteristic odor Colorless flam mable Table C 1 Hazardous Gases Continued Specific Gravity or Vapor Density Air 1 Percentages shown represent volume of gas in air For concentration over 0 3 Mostly methane and carbon dioxide with small amounts of hydrogen nitrogen hydrogen sulfide and oxygen
120. perience a little shortness of breath following exercise People in good health are not afraid to drive over the high passes in the Rocky Mountains At Loveland Pass oxygen pressure is 13 2 of a normal atmosphere At the top of Mt Whitney oxygen is equal to 12 2 t Many hikers go there and to higher peaks as well After adequate acclimation they may climb to the top of Mt Everest where oxygen is equal to only 6 7 The lowest oxygen concentrations that I have observed in a sewer atmosphere was 13 percent It was in a sealed chamber near sea level upstream from an inverted siphon on a metro politan trunk A man would be foolish to enter the chamber Without ventilation he might die but not from lack of oxygen 3020 Flow Transmitter Appendix C General Safety Procedures It seems unlikely that anyone has ever died in a sewer from suf focation that is a lack of oxygen Deaths have often been attributed to asphyxiation This is a word which according to the dictionary is used to mean death from an atmosphere that does not support life The word has sometimes been misinter preted as meaning suffocation which is only one kind of asphyxi ation In nearly all cases of death in sewers the real killer is hydrogen sulfide It is important that this fact be recognized Many cities diligently test for explosive gases which is very important and they may measure the oxygen concentration which usually is unimportan
121. possibility of cut ting your hands on the edges 3020 Flow Transmitter Section 3 Installation Compress ring into gap to install in pipe then outward force of ring against pipe wall holds ring in place inside pipe Figure 3 6 Sensor Installed on a Spring Ring Attaching the Sensor to the Ring Attach the probe to the ring either by using two 4 40 x 916 coun tersink screws or by snapping the optional probe carrier to the ring This second method of attaching the sensor allows for easy removal in case service is needed later N CAUTION Make sure the slots on the probe carrier are completely pressed onto the tabs on the ring This is particularly important where there is any possibility of reverse flows or where flows are of high velocity If the probe is not fully pressed onto the mounting ring tabs it might come loose in the stream and could possibly be damaged or lost To complete the sensor spring ring assembly procedure attach the sensor cable to the downstream edge of the ring Follow the cable routing shown in Figure 3 6 Other routing directions may affect measurement accuracy The cable can actually create a stilling well downstream from the sensor causing the level to read low Use the self locking plastic ties supplied with the ring Install the ring in the pipe by compressing it Press inward on both sides and slide the ring into the pipe Route the sensor cable out of the stream and secure it in positio
122. purpose of this manual is to provide the user with the infor mation necessary to operate maintain and service the 3020 Sub merged Probe Flow Transmitter To accomplish this the manual is organized into five sections The first section is a general intro duction to the flow transmitter The second section contains information on operation programming the flow transmitter and operating examples The third section provides installation details The fourth section describes available options and their uses The fifth section contains information on routine mainte nance and servicing to assist the user in correcting problems that may occur The 3020 shown in Figure 1 1 uses a submerged probe for level measurement The flow transmitter will normally be used with some type of primary measuring device to measure flow in an open channel The 3020 uses level to flow rate conversions derived from stored equations which cover the vast majority of open channel flow measurement situations Also the user may enter the coefficients and powers of the flow equation However most standard weirs and flumes are accommodated without the need for this equation 1 1 3020 Flow Transmitter Section 1 Introduction 1 3 Associated Equipment 1 4 The Submerged Probe 1 2 Programming the 3020 is done in two ways e Select the number of a choice listed on the flow trans mitter front panel label and enter that number on the keypad e Enter a numer
123. r own cable If the installation is not in conduit use Stahlin compression fittings to secure the cable to the enclosure Teledyne Isco recommends sheathed cable to protect the wires and to seal properly through the Stahlin fittings Minimum wire size is 18 AWG Maximum distance between the 3020 and the remote totalizer is 1 000 feet 304 8 meters Connect one wire of the cable to the REMOTE TOTALIZER terminal in the flow transmitter on TS2 Connect the other wire to the REMOTE TOTALIZER terminal in the flow transmitter At the totalizer connect the wire to terminal 1 on the terminal strip and connect the wire to terminal 2 on the terminal strip inside the enclosure 4 5 3020 Flow Transmitter Section 4 Options and Accessories 4 4 Extension Cables for The submerged probe level sensor used with 3020 has a 25 foot the Sensor 7 6 m or 50 foot 15 2 m cable attached depending upon the transducer measuring range This cable terminates in a 5 pin male M S connector which plugs into a mating M S connector at the 3020 The cable cannot be cut or spliced If the cable length 1s insufficient extension cables are available from Teledyne Isco in lengths of 25 and 50 feet These cables come with appropriate mating M S connectors for the submerged probe and the 3020 For distances greater than 75 feet 22 8 m Teledyne Isco recommends using the Quick Disconnect Box 4 5 Quick Disconnect Box The Quick Disconnect Box is a surface mounted plas
124. r source Where wiring may be damaged Teledyne Isco recommends using conduit for pro tection All wiring entering the 3020 should be through water tight fittings The 3020 has a stainless steel mounting bracket attached to its back and this bracket mounts the cabinet securely to a wall or other vertical surface Use hardware suitable for the surface where the flow transmitter is mounted The mounting plate has three 3 8 holes three inches apart Since the holes are slotted keyholed the case may be hung over 16 hardware or if a more secure mounting is desired up to 16 hardware may be screwed 3 2 2 Stahlin Fittings 3020 Flow Transmitter Section 3 Installation directly through the holes The bottom of the case has five holes which are threaded for either conduit fittings or if applicable codes permit Stahlin fittings Stahlin fittings available from Teledyne Isco are non metallic threaded compression type cable fittings which permit the entry of cables into an electrical enclosure Use these fittings if the flow transmitter is not wired with conduit Four of the holes in the bottom of the flow transmitter cabinet are threaded for 1 2 conduit and one hole is sized for 3 4 conduit Since the 3020 is an AC powered device intended for permanent connection to a com mercial power source it must be installed in accordance with all applicable codes WASHER BUSHING BODY RUBBER BUSHING WASHER OUTER NUT
125. r supplied cable The connector plugs into the sampler Wire the cable to the flow transmitter terminals as above The cable should meet the following specifications e Two wire 18 AWG minimum conductor size e 1000 feet maximum length e Sheathed cable suggested for non conduit installations to protect the wires If the wire colors are the same as described for the Teledyne Isco supplied cable above the following order of connection to the M S connector in the kit is recommended Black Pin A 12 Volts White Pin C Flow Pulse If the wire colors are different from those of Teledyne Isco s connect cable it will be your responsibility to see that the con nection to the pins of the M S connector are proper Fill the backside of the M S connector with a non corrosive RTV silicone sealant to ensure watertightness It 1s possible to connect the 3020 to a non Isco Sampler Most samplers of other manufacturers require a different flow propor tional signal from Isco Samplers usually an isolated contact 3 5 Connection to Other Equipment 3 6 Safety Considerations 3 7 Installing the Submerged Probe 3 8 General Mounting Considerations 3020 Flow Transmitter Section 3 Installation closure The SAMPLER OUTPUT terminals on TS3 provide an isolated contact closure rated for up to 1 Ampere at 48 VDC Wire the sampler and flow transmitter according to the sampler man ufacturer s instructions There are other optional accessories which
126. ral Safety Procedures also function as guards to keep people and vehicles away from the manhole opening To avoid a serious injury a person should not be lifted out of a manhole by his arm unless it is a dire emer gency When more than one person must enter a manhole the first person should reach the bottom and step off the ladder before the next one starts down When two men climb at the same time the upper one can cause the lower one to fall by slipping or stepping on his fingers 5 Traffic Protection In addition to traffic cones markers warning signs and barricades a vehicle or a heavy piece of equipment should be placed between the working area and oncoming traffic Flashing warning signals should be used to alert drivers and pedestrians Orange safety vests should be worn by personnel stationed at the surface when the manhole is located in a vehicular traffic area 6 Falling Object All loose items should be kept away from the manhole opening This applies to hand tools as well as stones gravel and other objects 7 Removing the Covers Manhole covers should be removed with a properly designed hook Use of a pick ax screwdriver or small pry bar may result in injury A suitable tool can be made from 4 inch round or hex stock Two inches of one end should be bent at a right angle and the other end should be formed into a D handle wide enough to accommodate both hands Even with this tool care must be exercise
127. rnings 5 8 E Error Codes 5 8 F Flow Conversion Equation 2 11 I Indicators 1 4 Display 2 3 Installation Alarm Box 4 2 Distances 3 5 General Comments 3 1 Location 3 2 Portable Operation 3 2 Submerged Probe 3 9 K Keypad 2 2 L Level Adjustment 2 10 M Maintenance Desiccant 5 2 Submerged Probe 5 3 Transmitter Case 5 1 Material Safety Data Sheets D 1 Maximum Head 2 7 Mounting Rings Universal Mounting Ring 3 15 MSDS D 1 P Primary Devices head measuring points 3 17 installing probe in 3 17 Programming 2 3 Examples Cipolletti Weir 2 15 Equation 2 19 Parshall Flume 2 13 Rectangular Weir with End Contrac tions 2 23 Explanation of Program Steps 2 7 List of Program Steps 2 6 Worksheet B 1 Q Quick Disconnect Box 3 6 4 6 R Hemote Totalizer 4 5 Replacement Parts A 1 S Safety 3 9 C 1 General Precautions C 1 Hazardous Gases C 6 Sewers C 4 Sampler Connecting to 3 8 Flow Pacing 2 8 Scissors Ring 3 15 Serial Output 4 4 Servicing 5 6 Index 1 3020 Flow Transmitter Index Index 2 Fuse Replacement 5 8 Getting Help 5 9 5 12 Precautions 5 10 5 11 Specifications 1 6 Stilling Wells 3 17 Submerged Probe 1 2 Extension Cables 4 6 Installation 3 9 Maintenance 5 3 Nose Sections 3 11 Theory of Operation 2 1 Wiring 3 4 T Technical Specifications 1 6 Terminal Blocks 1 4 Theory of Operation 3020 Transmitter 2 1 Submerged Probe 2 1
128. rocedures C 2 Sharp Edges Sharp edges of items in or near a manhole may cause cuts or bruises Lifting Injuries Unless proper tools are used to remove manhole covers back injuries or injuries to hands or feet may result 2 Planning Advance planning should include arrangements for test equipment tools ventilating equipment protective clothing traffic warning devices ladders safety harness and adequate number of personnel Hasty actions may result in serious injuries Time spent in the manhole should be kept to a minimum 3 Adverse Atmosphere Refer to Table C 1 Hazardous Gases at the end of this appendix Before workers enter a manhole tests should be made for explosive atmosphere presence of hydrogen sulfide and oxygen deficiency Combustible or toxic vapors may be heavier than air so the tests on the atmo sphere must be run at least 4 of the way down the manhole Whenever adverse atmosphere is encountered forced venti lation must be used to create safe conditions After the venti lating equipment has been operated for a few minutes the atmosphere in the manhole should be retested before anyone enters the manhole When explosive conditions are encountered the ventilating blower should be placed upwind to prevent igniting any gas that is emerging from the opening When a gasoline engine blower is used it must be located so that exhaust fumes cannot enter the manhole If testing equ
129. run and 18 AWG wire size N WARNING For safety do not connect line powered devices 120 VAC or higher directly to the relay contacts Use the alarm box for low voltage gt 30 volts pilot control only 4 3 3020 Flow Transmitter Section 4 Options and Accessories MODEL 3020 FLOW TRANSMITTER SS gt To other Alarm Boxes High Low Alarm 8 max or Relay Box other serial devices C To devices E in controlled by Alarm Box 3 wire cable in Pilot duty only conduit if required Junction box suggested if there are multiple Alarm Boxes Wire Alarm Boxes in parallel as shown Wire Alarm Boxes in parallel Figure 4 2 Interconnection of 3020 and Alarm Boxe s 4 2 Connection to 4 4 External Serial Devices The terminals marked 2312 INTERFACE were originally designed for the Model 2312 stripchart recorder which Teledyne Isco no longer sells However these terminals can also be used as a simplex serial output port providing ASCII level and flow rate data for remote transmission Every 30 seconds the 3020 transmits a line of data which includes level units of level mea surement percentage of maximum flow rate maximum flow rate a total flow value units of flow sample number and bottle number If you are using the flow transmitter with an Isco sampler the data line also includes an indication of a sampling event You can transmit this data line to a computer or connect it loc
130. s waste as defined under the Resource Conservation and Recovery Act RCRA 40 CFR 261 Materials of a hazardous nature that contact the product during normal use may be retained on the product The user of the product must identify the hazards associated with the retained material in order to assess the waste disposal options Dispose according to federal state and local regulations Section 14 Transportation Information U S Department of Transportation Shipping Name Not classified as a hazardous material Not regulated Section 15 Regulatory Information Not meant to be all inclusive selected regulations represented TSCA Listed Yes DSL NDSL Canadian Listed Yes OSHA TWA 20 mppcf 80 mg m SiO for Silica gel NIOSH REL TWA 6 mg m IDLH 3 000 mg m for silica gel Animal tests conducted in 1976 1978 18 month exposure at 15 mg m showed silica deposition in respiratory macrophages and lymph nodes minimum lung impairment no silicosis ACGIH TLV 10 mg m for Silica gel DOT Not classified as a hazardous material D 7 3020 Flow Transmitter Appendix D Material Safety Data Sheets D 8 Section 16 Other Information HMIS Hazardous Materials Identification System HMIS Rating Health Flammability Reactivity 0 minimal hazard 1 slight hazard 2 moderate hazard 3 serious hazard 4 severe hazard This MSDS was prepared by George E Mckedy Senior Applications Development Speci
131. smitter is connected to a sampler Se UP das epe UE came Ies 10 Sampler Scaling Number of sampler pulses per hour at maximum head 0 9 999 M Note Steps 11 to 15 are programmed only if an Isco 2312 Plotter is installed 11 Unit of Measure for Flow Rate on Remote Plotter 1 GPM 2 GPS 3 MGD4 CFS 5 CMS 6 CMH 7 CMD 8 LPS 9 CFD 10 GPH 11 AFD 12 CFH 12 Zeros to Right of Flow Rate Display 0 to 6 if value of Step 7 is 2 1000 13 Unit of Measure for Totalized Volume on Remote Plotter 1 CF 2 GAL 3 CM 4 AF 5 L 6 MG 14 Zeros to Right of Totalizer 0 to 9 15 Reset Plotter Totalizer to Zero 1 Yes 2 No 16 Display Operation 1 Flow rate 2 Level 3 Alternate between the flow and level 2 3 3 Description of Program Steps 3020 Flow Transmitter Section 2 Operation and Programming M Note Step 17 is programmed only if the 3020 is connected to exter nal equipment which operates with the standard 4 20 mA cur rent loop 17 4 20 mA Output Operation level flow rate with or with out event mark 1 Transmit Flow Rate 2 Transmit Flow Rate with Event Mark 3 Transmit Level 4 Transmit Level with Event Mark 18 Adjust Level Current Level in Feet 1 0 to 12 5 Meters 0 31 to 3 81 Following is an explanation for the program steps from the list above Step 1 In the first step of the program select the units used for level measurement feet or meters Step 2 In the second step of
132. sts so that in larger pipe sizes where large variations in circumference can occur you can use one or two of these extensions to take up or remove slack to bring the scissors mechanism into a position where it can be effectively tightened Mounting ring kits are available for different pipe sizes A kit is also available for partial pipe applications see your Isco Mounting Rings Installation and Operation Guide For a listing of part numbers and ordering information see Appendix B N CAUTION Do not overtighten the plastic cable ties they should be tight ened just enough to secure the cable in place without greatly indenting the cable Overtightening the plastic ties may col lapse the reference tube in the cable blocking it 3 15 3020 Flow Transmitter Section 3 Installation Scissors Assembly Extensions lt 7 lt 7 Base Section Tightening the scissors assembly expands the ring to press firmly against the pipe wall securing the ring Figure 3 9 Universal Mounting Ring Adjustment 3 11 Other Mounting Techniques 3 11 1 Rectangular and Trapezoidal Channels Many installations require mounting methods other than mounting rings Some alternative mounting methods are described below Contact Teledyne Isco for assistance in deter mining your specific installation needs A flat anchored mounting plate is a common mounting choice for installing sensors in rectangular or trapezoidal channels You can
133. t but they rarely measure H55 Death has occurred where it is unlikely that there was any measurable reduction in the oxygen concentration Waste water containing 2 mg per liter of dissolved sulfide and at a pH of 7 0 can produce in a chamber with high turbulence a concentration of 300 PPM HoS in the air This is considered to be a lethal concentration Many people have died from H55 not only in sewers and industries but also from swamps and from hot springs In one resort area at least five persons died from HS poisoning before the people were ready to admit that HS is not a therapeutic agent Hardly a year passes in the U S without a sewer fatality from H S as well as deaths elsewhere in the world The presence of HS in a sewer atmosphere is easily deter mined A bellows and ampoule type of tester is very satisfactory for the purpose even though it 1s only crudely quantitative When using a tester of this type do not bring the air to the ampoule by way of a tube as this may change the H S concen tration Hang the ampoule in the air to be tested with a suction tube to the bulb or bellows Lead acetate paper is very useful as a qualitative indicator It cannot be used to estimate the amount of sulfide but it will quickly turn black in an atmosphere containing only a tenth of a lethal concentration Electrodes or other similar electrical indicating devices for H55 in air have been marketed Some of them are known to be
134. t with the working surface e Avoid using a work surface made of an extremely good insulator Avoid plastic counter tops or glass as they are good insulators A metal surface is best but do not let compo nents connected to the AC line touch a metal surface particularly a grounded one Wood or compressed wood by product surfaces are marginal and we do not recommend them for use in winter or for severely dry 5 11 3020 Flow Transmitter Section 5 Maintenance and Troubleshooting 5 7 4 Call for Assistance 5 12 environments Conductive grounding mats are available for workstations and are the best solution for discharging static and allowing safe repair of AC powered equipment The degree of hazard depends on the level of humidity Be particularly careful if the work area is extremely dry or if the work is being done in the winter when forced heating and cold outdoor temperatures make relative humidity levels very low Installing a humidifier in the work area is a good idea Keep yourself grounded when handling disassembled equipment If you have opened a unit for repair make an effort always to touch the metal chassis before touching any of the circuit components Note however the precautions about working on AC powered equipment outlined in Section 5 7 2 Be especially careful handling the CMOS integrated circuits when they are separated from the rest of the circuitry Simply being connected to the rest of the circui
135. tahlin fittings or install the wiring in 42 EMT conduit if required M Note If properly sealed the Quick Disconnect Box will withstand submersion However Teledyne Isco recommends mounting the box above the maximum expected water level If this can not be guaranteed attach a 1 4 ID vinyl tube to the open end of the desiccant cartridge and route the tube to a location higher than the maximum expected level Water drawn into the vent tube will cause erratic operation of the probe and will be very difficult to remove 3 3 3 Preparing Shielded Cable 3 3 4 Connecting the Level Sensor Cable to the QD Box 3 3 5 Connecting the Cable from the QD Box to the 3020 3020 Flow Transmitter Section 3 Installation If you use shielded cable to connect the flow transmitter to the Quick Disconnect Box use care preparing the ends Avoid cutting too deeply and nicking the insulation on the wires or damaging the braided shield Use a sharp knife to score the outer jacket about 21 2 inches back from the end then bend the end of the cable in your hand to break through the score line Do not cut completely through the jacket the shield or the wires inside may be nicked Pull off the jacket and separate the wires in the braided shield by pulling the wires inside the shield through a hole made in the shielding 4 of the way into the stripped area Do not try to slit or tear the shielding as it will fall apart Instead separate it with a screwdr
136. ted if a man is told to give attention to a long list of things that in fact are irrelevant Be very careful to avoid high H S concentrations flammable atmospheres and hazards of physical injuries Remember that much HS may be released by the stirring up of sludge in the bottom of a structure Obey your senses in respect to irritating gases such as chlorine unconsciousness comes suddenly from breathing too much Be cautious about strange odors Do not determine percent oxygen in the air There is a danger that the result will influence a man s thinking about the seriousness of the real hazards Most important use ample ventilation and do not enter a potentially hazardous structure except in a good safety harness with two men at the top who can lift you out The following table contains information on the properties of hazardous gases Table C 1 Hazardous Gases Explosive Range by vol in air Limits lower upper Max Safe 8 Hour Exposure ppm Max Safe 60 Min Exposure ppm Physiological Effect Causes throat and eye irritation at 0 05 cough ing at 0 17 Short exposure at 0 5 to 1 fatal Slight symp toms after several hours exposure at 0 16 to 0 32 2 rapidly fatal Very poison ous irritating vom iting convulsions psychic distur bance Likely Location of Highest Concentration Near top Concentrates in closed up per spaces At bottom At bottom
137. tic enclosure similar to that used for the High Low Alarm Relay Box described at the beginning of this section Mount this box the same way Introduce the cables into the box with either conduit or Stahlin cord grip fittings as code permits in your area Strip the cables and attach them to the terminal strip inside the box Connect the cables as shown in the drawing that accompanies the extension cable Do not install the Quick Disconnect Box where it may be subject to submersion or abuse If you do not use any of the holes in the enclosure make sure you replace the plugs 4 6 Model 2410 Circular The 2410 is a circular chart recorder manufactured for Teledyne Chart Recorder Isco Its general application is to record varying level or flow rate information on a circular chart paper record over a period of time The time period is either 24 hours or seven days depending on which version of the 2410 you select You must connect the 2410 to commercial 120 VAC power to drive its chart motor This is described in detail in the manual supplied with each unit The pen recording the level or flow rate on the chart is driven by the 4 20 mA output signal from the 3020 Contact the factory for additional information about the 2410 4 6 1 Wiring the 2410 Select a 2 wire cable for interconnection The conductors should Recorder be 18 AWG and the wires should be color coded Maximum length is 1 000 feet The recorder manufacturer suggests the use of shielded cab
138. try provides some protection Most of the circuitry is well protected from damage caused by static discharge when the unit is powered up However never replace an IC when the unit is turned on Always transport individual CMOS semiconductors and built up printed circuit boards in conductive packaging Foil 1s satisfactory metallized plastic bags are also available and work well Ordinary plastic bags and pink poly are not satisfactory unless the IC legs or leads are also pressed into a block of black conductive foam If replacement components do not come in marked protective packaging do not use them They may already be destroyed Once assembled and soldered printed circuit boards are easily damaged by improper repair procedures Do not attempt to remove components particularly ICs from printed circuit boards unless you are skilled at this procedure You can find a defective component and replace it and the unit will still not work if too much heat or pressure break the foil traces or pulls the copper cores out of holes on the board The simplest method for removing ICs is to cut off the legs at the chip body remove the chip and then desolder the legs from the board one at a time Finally clear the holes with a vacuum pump or solder wick If trouble symptoms persist and cannot be located call the Cus tomer Service Department at 800 228 4373 Outside the U S A call 402 464 0231 5 8 Circuit Boards 5 8 1 Terminal B
139. udes a 2312 Plotter the units of measure selected for this step will also be entered for the 2312 in Step 13 and the number of zeroes in Step 14 For example if you want to totalize in cubic feet and the flow rate at maximum head is 72 5 CFS 72 5 CFS x 60 sec min x 60 min hr 261 000 cubic feet per hour CFH For this example each count on the totalizer equals 1 000 cubic feet 261 000 CFH 1 000 CF count 261 counts per hour You would then enter 2 6 1 for this step In this instance you would place three 0 labels and the CF label to the right of the display If the 3020 is connected to a 2312 you would then enter 1 CF in Step 13 and 3 in Step 14 Step 10 The flow transmitter requests selection of sampler scaling flow pulses to the sampler This step need not be pro grammed unless the 3020 is being used with an associated wastewater sampler The purpose of this program step 1s to provide signals to the associated sampler to take flow paced samples The range is from 0 to 9 999 pulses per hour The number is determined in the same way as in Step 9 above Selection of the number of flow pulses to the sampler per hour 1s based on flow rate at maximum head so the actual number of pulses per hour may be considerably lower The number chosen 3020 Flow Transmitter Section 2 Operation and Programming should be determined by the volume of flow that must pass through the primary device before a sample is taken rather th
140. unre liable and we know of none that have proved dependable Do not use one unless you check it at frequent intervals against air con taining known H S concentrations A supposed safety device that is unreliable is worse than none at all Remember that the nose fails too when it comes to sensing dan gerous concentrations of HoS Various other toxic gases have been mentioned in some publica tions It is unlikely that any person has been asphyxiated in a sewer by any of those other gases except possibly chlorine The vapor of gasoline and other hydrocarbons is sometimes present in amounts that could cause discomfort and illness but under that condition the explosion hazard would be far more serious The explosimeter tests as well as the sense of smell would warn of the danger Pipelines 1n chemical plants might contain any C 5 3020 Flow Transmitter Appendix C General Safety Procedures C 3 Hazardous Gases Specific Gravity or Vapor Density Air 1 Common Properties Chemical Formula Ammonia NH3 Irritant and poisonous Col orless with characteris tic odor Irritant colorless anesthetic CS Nearly odorless when pure color less anesthetic Poisonous Carbon Bisulfide C 6 number of harmful vapors They too are sensed by smell and explosimeter tests if they get into the public sewer Such occur rences are rare The attempt to instill a sense of urgency about real hazards is dilu
141. ur digits Divide by ten so that flow rate at maximum head 1s less than 9 999 The value entered into the 3020 will then be only four digits long 42 740 10 4 274 Place one 0 label and the GPM label to the right of the display For this example the totalizer will be programmed to read out in cubic feet To do this find the total flow per hour at maximum head The flow rate at maximum head in CFS is 95 23 CFS 95 23 CFS x 60 seconds per minute x 60 minutes per hour 342 828 cubic feet per hour CFH The number entered into the 3020 to totalize in cubic feet would be 3 428 342 828 x 100 3 428 which is the above result rounded to four digits Place two 0 labels and the CF label to the right of the totalizer A flow pulse will be sent to the sampler every 1 000 gallons First we must find the flow per hour of flow at maximum head 42 740 GPM x 60 minutes per hour 2 564 400 gallons per hour GPH We want to send a flow pulse to the sampler every 1 000 gallons 2 564 400 gallons per hour 1 000 gallons per flow pulse 2 564 flow pulses per hour If the sampler 1s programmed to take a sample every 5 000 pulses a sample will be taken every 5 000 000 gallons 1 000 gallons per pulse x 5 000 pulses per sample 5 000 000 gallons per sample 1 Press PRIMARY DEVICE 3020 Flow Transmitter Section 2 Operation and Programming 2 Select units of measure for level To select feet press 1 n Press ENTER 3 S
142. y H XXX H is for Height level 7 Press the DISPLAY OPERATION key to set the display Press 1 Press ENTER XXXX Flow Rate 8 Press the 4 20 MA OUTPUT key to select the information to transmit For this example we want to transmit level To select transmit level press 3 17 3 Press ENTER XXXX Flow Rate 2 14 2 4 2 Programming fora Cipolletti Weir 3020 Flow Transmitter Section 2 Operation and Programming 9 Press the ADJUST LEVEL key to set the current level in feet To set the liquid level or head to 0 75 feet press dec imal 7 5 The H will flash Press ENTER Flow Rate In this example we will go through the programming steps nec essary to select a 10 foot Cipolletti weir with a maximum head of 2 feet Flow rate will be displayed in GPM The flow rate at maximum head found in the sco Open Channel Flow Measurement Handbook 1s 42 740 GPM The totalizer will totalize in cubic feet and a flow pulse will be sent to the sampler every 1 000 gallons The plotter output will transmit flow rate units of GPM and flow units of cubic feet The display will alternate between level and flow rate The 4 20 mA output will be set up to transmit flow rate with event marks with 100 equal to flow rate at maximum head Assume the level mea sured with a staff gauge or other measuring device to be 1 5 feet Calculations for Example 2 The flow rate at maximum head 42 740 GPM is larger than fo

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