Home

Flow Poke User Manual

1. s a 5 1 4 5 6 8 10 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 8 inch V Weir Meter August 16 1985 u a o o o La 4 5 6 8 10 20 30 40 50 60 100 200 300 400 500 600 800 1000 Gallons Per Minute Symbol Slope 0 004 0 239 ST ANTHONY FALLS HYDRAULIC LABORATORY a No 3319 ISCO Meter Calibrations 1 50 Summary of Calibrations A 3205 8 inch V Weir Meter gt 5 0 August 16 1985 Figure 1 4 Calibration Curves 8 inch V Notch Weir Meter 1 7 Isco Flow Poke Section 1 Introduction Inches of Water Inches of Water A lt gt usui EEE a 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 8 inch Orifice Meter August 16 1985
2. Slope 0 0022 0 139 1 59 3 09 5 00 20 30 40 50 60 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 12 inch V Weir Meter August 5 1985 Figure 1 8 Calibration Curves 12 inch V Notch Weir Meter Isco Flow Poke Section 1 Introduction Inches of Water Inches of Water 20 30 40 50 60 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 12 inch Orifice Meter August 6 1985 A lt gt Slope 0 0022 0 139 1 59 3 09 5 00 20 30 40 50 60 80 100 200 300 400 500 600 BOO 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 12 inch Orifice Meter August 6 1985 Figure 1 9 Calibration Curves 12 inch Orifice Meter Isco Flow Poke Section 2 Preparation for Use Thi
3. Slope 0 004 0 23 1 59 3 02 5 0 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 8 inch Orifice Meter August 16 1985 Figure 1 5 Calibration Curves 8 inch Orifice Meter 1 8 Isco Flow Poke Section 1 Introduction M Inches of Water NH ice 4 5 6 8 10 20 30 40 50 60 BO 100 200 300 400 500600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 10 inch V Weir Meter August 12 1985 7 EXER ET 5 Lid a cp p 4 5 6 8 10 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute Symbol Slope ST ANTHONY FALLS HYDRAULIC LABORATORY 0 0028 0 167 3319 ISCO Meter Calibrations e 1 59 Summary of Calibrations 3 09 10 inch V Weir Meter gt 5 00 August 12 1985 Figure 1 6 Calibration Curves 10 inch V Notch Weir Meter 1 9 Isco F
4. Figure 2 1 Optional Carrying Case 2 1 Isco Flow Poke Section 2 Preparation for Use 2 2 Preparing the The Flow Poke s manometer is shipped dry Prior to taking the Manometer unit into the field for the first time the manometer must be filled It is generally most convenient to fill the manometer in an office or shop environment As mentioned a bottle of fluorescein green concentrate is shipped in the unit s accessory package This concentrate is mixed with water to form a light green liquid which may be easily read in the manometer tube To mix the green liquid add approximately 50 drops of fluorescein green concentrate to 8 ounces of water preferably distilled The 8 oz polyethylene bottle with spout cap is provided for mixing dis pensing and storage of the liquid Concentrations of over 50 drops per cup may result in the formation of bubbles or foam if the manometer is shaken or bounced about After the green liquid has been prepared it will be added to the manometer bubbler assembly First select any one of the metering insert s scales it does not matter which scale at this point and attach it to the manometer by removing the three wing nuts indicated in Figure 2 2 sliding the scale over the three studs as shown and refastening the wing nuts Each scale has a protective plastic strip adhered to both sides Peel the plastic strips off each scale at this time The U tube manometer may be slid up and down in the wh
5. 3 12 3 4 6 Installation in the Pipe 3 13 3 4 7 Inflating the Rubber Collar 3 14 3 4 8 Monitoring the Collar Pressure 3 14 Measuring the Flow Rate 3 15 3 5 1 Operation of Manometer Bubbler Assembly 3 15 3 5 2 Blow Rate e eI ewe WR aD RE Y RA AURA 3 15 3 5 3 Reading the Scale 3 16 Removal and Disassembly 3 17 3 6 1 Deflating the Rubber Collar 3 17 3 6 2 Inspection of Metering Insert 3 17 Isco Flow Poke Table of Contents Section 4 Maintenance and Repairs 4 1 Cleaning and Routine 4 1 4 2 Repair Procedures fn li Re dsl 4 2 4 2 1 Replacing the Rubber Collar 4 2 Appendix A General Safety Considerations Al Hazards lIl amp lowed bed WERE Gas dere E ER A 1 A2 Planning UIS que was eee sete 62 A 1 Adverse 2 hh A 2 Ai Entering 11 su SQ LAG Yu NIAI DEMO PA A 2 5 Traffic Protection lili wise LARA T DRE LER E Ee A 3 A 6 Falling Objects 2 052 u eee a ie Maka ou s dee
6. At bottom Products of Oxygen Dioxide odorless When 1096 more than a few to when heated combustion deficiency breathed in large minutes even if sub 60 000 may stratify sewer gas indicator quantities may cause ject is at rest and oxy at points sludge Also acid taste Non flam gen content is normal above bottom issues from car mable Not generally Acts on respiratory bonaceous present in dangerous nerves strata amounts unless an oxygen deficiency exists Table A 1 Hazardous Gases Continued Isco Flow Poke Appendix A General Safety Considerations Carbon CO Chemical asphyxiant 0 97 Combines with hemo 400 50 12 5 74 0 Neartop espe Manufactured CO ampoules Monoxide Colorless odorless globin of blood cially ifpresent gas flue gas tasteless Unconsciousness in 30 with illuminat products of Flammable min at 0 2 to 0 25 ing gas combustion Poisonous Fatal in 4 hours at motor exhausts 0 1 Headache in few Fires of almost hours at 0 02 any kind Carbon CCly Heavy ethereal odor 5 3 Intestinal upset loss of 1 000 100 Atbottom Industrial Detectable odor Tetra Chl consciousness possi to wastes atlow concen oride ble renal damage res 1 500 solvent cleaning trations piratory failure Chlorine Cl Irritant Yellow green 2 49 Irritates respiratory 4 1 Atbottom Chlorine cylin Detectable odor color Choking odor tract Kills mo
7. Figure 4 1 Changing the Inflatable Collar 4 2 A 1 Hazards A 2 Planning Isco Flow Poke Appendix A General Safety Considerations The following procedures are those used by Black amp Veatch a respected consulting firm and are published here by their kind 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 There are many hazards connected with entering manholes Some of the most common hazards are 1 Adverse Atmosphere The manhole may contain flammable or poisonous gases or the atmosphere may be deficient in oxygen Forced ventila tion may be necessary 2 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 3 Traffic Whenever manholes are located in the traveled way barri cades and warning devices are essential to direct traffic away from an open manhole 4 Falling Object Items placed near the manhole opening may fall and injure a worker in the manhole 5 Sharp Edges Sharp edges of items in or near a manhole may cause cuts and bruises 6 Lifting Injuries Unless proper tools are used to remove manhole covers back injurie
8. 1 043 VOLATILITY BY VOLUME NOT AVAILABLE EVAPORATION RATE NOT AVAILABLE APPEARANCE AND ODOR GREEN LIQUID WITH MILD ODOR pH 10 23 FLUORESCEIN GREEN CONCENTRATE PAGE 1 OF 3 B 2 Isco Flow Poke Appendix B Material Safety Data Sheets SECTION IV FIRE AND EXPLOSION DATA FLASH POINT NO FLASH OBSERVED AT 230 DEG F METHOD SETAFLASH ASTM D3828 LEL N A UEL N A 96 EXTINGUISHING MEDIA NOT APPLICABLE HAZARDOUS DECOMPOSITION PRODUCTS CO CO2 SULFUR OXIDES AND NITROGEN SPECIAL FIRE FIGHTING PROCEDURES USE WATER FOG ALCOHOL FOAM CARBON DIOXIDE OR DRY CHEMICALS UTILIZE SELF CONTAINED BREATHING APPARATUS UNUSUAL FIRE AND EXPLOSIVE HAZARDS NONE KNOWN SECTION V HEALTH HAZARD INFORMATION PERMISSIBLE EXPOSURE LEVEL PEL OR TLV NOT AVAILABLE PRIMARY ROUTES OF ENTRY AND AFFECTS OF ACUTE OVEREXPOSURE EYE CONTACT CAN CAUSE SEVERE IRRITATION OR BURNS SKIN CONTACT PROLONGED EXPOSURE CAN CAUSE MODERATE IRRITATION OR DRYING FIRST AID IF ON SKIN WASH EXPOSED AREA WITH SOAP AND WATER LAUNDER CONTAMINATED CLOTHING BEFORE RE USE GET MEDICAL ATTENTION IF IRRITATION PERSISTS IF IN EYES FLUSH WITH LARGE AMOUNTS OF WATER LIFTING UPPER AND LOWER LIDS GET MEDI CAL ATTENTION IF SWALLOWED INDUCE VOMITING AND GET MEDICAL ATTENTION IF BREATHED IF AFFECTED REMOVE INDIVIDUAL TO FRESH AIR IF BREATHING DIFFICULTIES CONTINUE ADMINISTER OXYGEN KEEP AT REST AND SEEK MEDICAL ATTENTION SECTION VI REACTIVIT
9. 3 4 3 5 3 6 Summary of Operating Procedures 3 1 Selecting the Metering Insert Configuration 3 3 3 2 Size of Inserts i dc eor Ne y cate edet pes ere 3 3 3 2 2 Selection of Flow Control Section 3 3 3 2 8 Overlap Ranges 3 3 3 2 4 Construction of Metering Inserts 3 4 3 2 5 V Notch Weir Plate sa terren a e exer s ba Hr o UR ERI 3 4 Field Assembly eR ota a ux m es Se u ev SE 3 6 3 3 1 Multi Section Pole Assembly 3 6 3 8 2 Assembling the Pole 3 6 3 3 3 Attaching the Metering Insert 3 6 3 3 4 Attaching the Hose Assembly 3 7 3 3 5 Attaching the Scale 3 9 3 3 6 Attaching the Manometer Bubbler Assembly 3 9 Insertion Into the Manhole and 3 10 3 4 1 Checking the Length 3 10 3 4 2 Insertion into the Manhole 3 10 3 4 8 Zeroing the Manometer 3 11 3 4 4 Connecting the Bubbler Hose 3 12 3 4 5 Adjusting the Scale
10. After the Flow Poke has been removed from the manhole it can be disassembled as desired for transportation Typically this involves removing the metering insert riser poles and manometer bubbler assembly from the pole assembly and disassembling the pole assembly Field Cleaning It may be desirable to wash the metering insert and right angle tube immediately after use A container of water may be used to accomplish this by simply pouring a quantity of water over the metering insert and right angle tube Some users have found that metering inserts may be conve niently transported from site to site installed in a large plastic bag 3 17 Isco Flow Poke Section Operation 3 18 Isco Flow Poke Section 4 Maintenance and Repairs 4 Cleaning and Routine Maintenance The following section describes basic care of the Flow Poke Included is information on cleaning and routine maintenance procedures to keep the unit in top operating condition and some general repair procedures The metering insert and 73 angle tube the parts of the Flow Poke actually in the flow stream should be washed after each use At a minimum the entire lower section of the Flow Poke should be thoroughly cleaned at the end of each day s use This may be best accomplished using a hose and brush The V notch weir plates should be removed from any of the metering inserts that were used the inserts and weir plates washed and dried then reassembled P
11. CLEA 0 87 MAX BU NDLE CABLE TIE 489001500 230199901 209016900 209016800 HOSE CLAMP 7 16 DIAMETER STEEL TUBING CLAMP 1 8 X 1 4 QUICK DISCONNECT 3 16 TO 1 4 TAPER M QUICK DISCONNECT 1 4 TO 5 16 TAPER F 029160402 POLYURETHANE TUBING 375 OD X 250 1D 612814018 HOUSING SUB ASSEMBLY 6 16 602803051 SEAL 4 6 ID FOR 6 INSERT 602814017 V NOTCH WEIR ASSEMBLY 6 602813022 FLOW SCALE 6 612814022 HOUSING SUB ASSEMBLY 8 602813052 SEAL 6 3 ID FOR 8 INSERT 20 602814021 V NOTCH ASSEMBLY 8 602813030 FLOW SCALE 8 612814026 HOUSING SUB ASSEMBLY 10 ES EA 10 3 602813053 SEAL 7 8 ID FOR 10 INSERT NOTE 602814025 V NOTCH WEIR ASSEMBLY 10 602813036 FLOW SCALE 10 For current prices and quotations on parts contact Isco Service Department This list is subject to change without notice Isco Flow Poke Appendix C Replacement Parts List 602812002 REPLACEMENT PARTS LIST SHEET 4 OF 5 TELEDYNE 1SCO INC REV C DATE 05287 PART NUMBER NO 21 6128 4030 DESCRIPTION HOUSING SUB ASSEMBLY 12 28 23 30 6028 6028 6028 3054 4029 3042 SEAL 9 5 ID FOR 12 INSERT V NOTCH WEIR ASSEMBLY 12 FLOW SCALE 12 3 34 3 6028 6028 6028 2090 6028 4032 4003 4006 0000 3075 INFLATION BUBBLER HOSE ASSEMBLY 32 209016801 QUICK DISCONNECT 3 16 TO 1 4 TAPER F 33 MANOMETER BUBB
12. Density Exposure Exposure in air Highest of Testing Air 1 ppm ppm Limits Concentration lower upper Hydro HS Irritant and poisonous 1 19 Impairs sense of smell 200 20 43 Near bottom Coal gas petro 1 28 Ampoule gen Sul volatile compound rapidly as concentra to but may be leum sewer gas fide Rotten egg odor in tion increases Death 300 45 0 above bottom Fumes from 2 5 by weight small concentrations in few minutes at 0 2 ifairisheated blasting under lead acetate Exposure for 2 to 15 Exposure to 0 07 to and highly some condi solution min at 0 01 impairs 0 1 rapidly causes humid tions sense of smell Odor acute poisoning Para Sludge gas not evident at high lyzes respiratory cen concentrations Color ter less Flammable Methane CH4 Simple asphyxiant 0 55 Acts mechanically to Probably 5 0 15 0 Attop increas Natural gas 1 Combustible Colorless odorless deprive tissues of oxy no limit ing to certain sludge gas man gas indicator tasteless flammable gen Does not support provided depth ufactured gas life oxygen sewer gas Strata 2 Oxygen defi per of sedimentary ciency indicator cent age origin In is suffi swamps or cient for marshes life Nitrogen No Simple asphyxiant 0 97 Physiologically inert Near top but Sewer gas Oxygen Colorless tasteless maybe found sludge gas Also deficiency Non flammable Prin near bottom issues from indicator cipal constituent of air some ro
13. if the sewer is flowing more than 1 4 to full flow should be measured using the round orifice flow control section If the sewer is flowing at less than this the V notch flow control section should be used As a point of interest it should be noted that for both the V notch and round orifice flow control sections flow at the lower end of their calibration curves is open channel flow similar to flow through a conventional weir However flow at the upper end of their calibration curves is closed channel flow similar to flow through a conventional orifice plate Thus as flow goes from low to high through either of the flow control sections they pass from acting as an open channel weir to a closed channel orifice As shown in the flow rate ranges listed in Table 1 1 there is an overlap in the calibrated range of flow rates for the round orifice and V notch weir flow control sections for a given size metering insert For example the round orifice of a 6 metering insert has a calibrated range of 5 to 180 GPM while the V notch insert has a range of 1 to 90 GPM Thus for a 6 insert the two flow control 3 3 Isco Flow Poke Section Operation 3 4 3 2 4 Construction of Metering Inserts 3 2 5 V Notch Weir Plate sections have an overlapping range of 5 to 90 GPM As a general rule when the flow rate in the sewer is thought to be in the over lapping range it is normally preferable to use the V notch weir flow control sect
14. 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 Table A 1 Hazardous Gases Gas Chemical Common Specific Physiological Max Max Explosive Likely Most Simplest and Formula Properties Gravity or Effect Safe Safe Range Location Common Cheapest Vapor 60 Min 8Hour byvol of Sources Safe Method Density Exposure Exposure in air Highest of Testing Air 1 ppm ppm Limits Concentration lower upper Ammonia NH3 Irritant and poison 0 60 Causes throat and 300 85 16 25 Near top Sewers chemi Detectable ous Colorless with eye irritation at to Concentrates cal odor at low characteristic odor 0 05 coughing 500 in closed up feed rooms concentrations at 0 17 Short per spaces exposure at 0 5 to 1 fatal Benzene Irritant colorless 2 77 Slight symptoms 3 000 25 13 7 1 Atbottom Industrial Combustible anesthetic after several hours to wastes gas indicator exposure at 0 16 to 5 000 varnish sol 0 32 2 rapidly fatal vents Carbon CS Nearly odorless 2 64 Very poisonous 15 13 440 Atbottom An insecticide Combustible Bisulfide when pure color irritating vomiting gas indicator less anesthetic convulsions psychic Poisonous disturbance Carbon CO Asphyxiant Colorless 1 53 Cannot be endured at 40 000 5 000
15. riser pole has been attached to the riser pole assembly the chosen configuration of the metering insert tube should be attached to the end of the 73 angle pole with the body of the insert hanging down as shown in Figure 3 4 Attach the inflation bubbler hose assembly to the metering insert The two 1 4 OD X 3 16 ID plastic hoses connect the manometer bubbler assembly at the top of the pole to the metering insert at the bottom of the pole A 20 ft hose assembly 3 7 Isco Flow Poke Section Operation is supplied with each unit One hose connects the air pump to the inflatable rubber collar on the metering insert while the other connects the manometer bubbler assembly to the bubbler tube permanently attached to the metering insert Before attaching the hose assembly check to be sure that both are free of water or green manometer liquid if there is any fluid blow it out of the hoses Attach the connectors on the ends of the hoses to their mating connectors from the metering insert as shown in Figure 3 4 Note that there are male and female connectors on both the hoses and the metering insert so the connections cannot be made incorrectly Note also that both ends of the hose assembly are identical so either end may be attached to the metering insert Finally secure the hose assembly to the air pump Any excess hose can be gathered near the top of the pole Hose Connections Figure 3 4 Metering Insert Connections H
16. the pipe For lower flow rates an attachable 60 V notch weir plate flow control section is also sup plied with each metering insert The flow rate ranges for the various sizes of metering inserts with both flow control sections are listed in Table 1 1 The metering insert is sealed in place in the pipe by an inflatable rubber collar a pressure gauge is furnished to allow the pressure in the collar to be monitored A bubbler tube is permanently attached to the metering insert assembly allowing the upstream pressure to be measured by the manometer bubbler assembly The multi section pole assembly allows the metering insert to be installed in the sewer pipe from ground level without entering the manhole The pole s 21 2 foot sections quickly snap together allowing the unit to be conveniently used in a wide range of manhole depths up to 16 feet Supplied with the unit is a right angle tube used to attach the metering insert to the pole assembly foot powered air pump is supplied and is used to inflate the rubber collar which seals the metering insert in place A wooden rest is furnished with the unit to support the pole in a plumb position in the manhole The manometer bubbler assembly is used to measure the water pressure upstream from the metering insert and to convert this measurement to the flow rate in the sewer The plastic U tube manometer is connected by a plastic line to the aluminum bubbler tube permanently mounted in the meterin
17. tube of the manometer up or down in its white base assembly until alignment is achieved If there is not enough liquid in the manometer to allow alignment to be achieved more will have to be added If the menisci are not level that is aligned with each other it is likely that there is liquid in the valve body or in the tubing leading down to the metering insert To clear this liquid repeatedly squeeze the bubbler s bulb until the liquid is expelled and the menisci become level with each other The green manometer liquid should bounce up and down while the liquid is being expelled from the valve body and tubing Isco Flow Poke Section 3 Operation 3 4 6 Installation inthe Pipe After the manometer has been zeroed the metering insert should be installed in the pipe and secured in place Lower the unit toward the invert of the pipe in the bottom of the manhole until the metering insert is resting in the pipe If the length of the multi section pole assembly is not correct that is the top of the manometer is not near eye level with the insert in the pipe the unit should be pulled out of the manhole at this time and the length adjusted as necessary The metering insert should be ori ented facing into the flow coming out of the entrance pipe of the manhole as shown in Figure 3 10 Then maneuver the metering insert into the entrance pipe The metering insert should be slid into the pipe so that the back end of the insert is totally sur r
18. 5 Ips 125 Ips for 1 25 to 2 50 Ips 5 of reading above 2 50 Ips H H Calibrated Ranges 6 15 cm Metering Insert V Notch Weir Round Orifice 8 20 cm Metering Insert V Notch Weir Round Orifice 10 25 cm Metering Insert V Notch Weir Round Orifice 12 30 cm Metering Insert V Notch Weir Round Orifice 1 to 90 GPM 5 to 180 GPM 1 to 160 GPM 10 to 320 GPM 1 to 230 GPM 20 to 480 GPM 1 to 320 GPM 40 to 640 GPM 1 to 5 5 Ips 5 to 12 Ips 1 to 10 Ips 5 to 20 Ips 1 to 15 Ips 1 to 30 Ips 1 to 20 Ips 2 to 40 Ips Isco Flow Poke Section 1 Introduction 50 30 ES 20 E 0 go Hu EI s v 3 xL EE 3 Et 4 m 2 d ep sb mac css s Tess tes i l LL 1 4 5 6 8 10 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 6 inch V Weir Meter August 26 1985 i EFi z SEDI EE i 5 H 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute Symbol 12 Slope A
19. Flow Poke at a particular measuring site is to determine the metering insert configuration appro priate for that site This involves selecting a metering insert to match the size of the sewer pipe in which the measurement is to be made and then determining whether the round orifice or V notch flow control section is to be used As discussed earlier the Flow Poke is supplied with metering inserts designed to be used in 6 8 10 and 12 inside diameter sewer pipes The actual outside diameter of each metering insert is approximately 90 of the pipe diameter to allow for an under sized pipe or for a pipe that is out of round Thus the actual outside diameter of the 6 metering insert is 5 4 that of the 8 insert 7 2 etc Normally a 6 metering insert is selected to be used in a nominally 6 inside diameter pipe and so on However in certain instances it may be necessary to use the next smaller size insert i e an 8 insert in 10 pipe Once the size of metering insert has been selected it must be decided whether to use the round orifice or V notch flow control sections This decision is normally made on the basis of the amount of flow present in the pipe As shown in the flow rate ranges for the various size metering inserts in Table 1 1 and the calibration curves in Figure 1 2 the round orifice flow control section is used with higher flow rates while the V notch section is used with lower flow rates As a general rule of thumb
20. Isco Flow Poke Installation and Operation Guide TELEDYNE ISCO A Teledyne Technologies Company Part 60 2813 005 of Assembly 60 2814 057 Copyright 1986 All rights reserved Teledyne Isco Inc Revision J November 2005 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 schematics and instruc tions without
21. LER ASSEMBLY INCLUDES ITEMS 13 39 40 35 37 34 38 36 VALVE BLOCK ASSEMBLY DOUBLE VALVE BULB 2 36 602813012 MANOMETER NUT 31 MANOMETER PLUG MODIFICATION 38 39 40 602503016 2090 6643 209009603 GROMMET TEE FITTING 1 8 NPT X 1 4 X CHECK VALVE 1 4 BARB 4 6028 6028 4001 3064 MANOMETER TUBE ASSEMBLY INCLUDES ITEMS 42 44 43 45 42 602814010 MANOMETER HOLDER ASSEMBLY 43 SPACER 144 ID X 63 OD X 47 LONG 44 209920001 142200201 SPRING CLIP 1 4 DIAMETER X 3 8 LONG MANOMETER BASE AND POLYCARBONATE U TUBE 602813091 FLOW SCALE 20CM 45 46 602813090 FLOW SCALE I5CM 4 48 602813092 FLOW SCALE 25CM 9 4 602813093 FLOW SCALE 30CM 603233230 50 TAPER FITTING 51 od NOTE 209009601 209009606 VALVE CORE CORE HOUSING For current prices and quotations on parts contact Isco Service Department 2 This list is subject to change without notice Isco Flow Poke Appendix C Replacement Parts List 602812002 REPLACEMENT PARTS LIST SHEET 5 OF 5 TELEDYNE ISCO INC REV C DATE 05287 TEM PART NUMBER DESCRIPTION 3 209009608 VALVE CAP 4 489010500 CABLE TIE 2 0 MAX BUNDLE AS 53 NN S S M m S E EN EN NN NN E mu NOTE For current prices and quotations on parts contact Isco Service Department 2 This list is subject to change without notice C 6 Teledyn
22. Ra eae E A 3 Removing the Covers L yar D NA nent nen nee A 3 A S Other Precautions er ete e ROLE E IRA Ee ew cs E A 3 A9 Emerpencies o fo centri LER ne ee BR eee a eee urs A 3 A 10 Field teen hr A 4 A 11 Lethal Atmospheres in Sewers A 4 Appendix B Material Safety Data Sheets Appendix C Replacement Parts List List of Figures Tet Flow Poke uade Ce a Rea eee ee ee 1 1 1 2 Calibration Curves 6 inch V Notch Weir 1 5 1 3 Calibration Curves 6 inch Orifice Meter 1 6 1 4 Calibration Curves 8 inch V Notch Weir 1 7 1 5 Calibration Curves 8 inch Orifice Meter 1 8 1 6 Calibration Curves 10 inch V Notch Weir 1 9 1 7 Calibration Curves 10 inch Orifice Meter 1 10 1 8 Calibration Curves 12 inch V Notch Weir 1 11 1 9 Calibration Curves 12 inch Orifice Meter 1 12 2 1 Optional Carrying Case 2 1 2 2 Manometer and Scale Assembly 2 2 3 2 3 Filling the Manometer rr n 2 4 3 1 Metering Insert with V Notch Weir 3 5 3 2 Metering Insert with Round O
23. SCRIBED HEREIN N A NOT APPLICABLE NE NOT ESTABLISHED ND NOT DETERMINED FLUORESCEIN GREEN CONCENTRATE PAGE 3 of 3 B 4 Isco Flow Poke Appendix C Replacement Parts List Replacement parts are called out in the following diagrams Ref erence the call out number 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 Inc Customer Service Department P O Box 82531 Lincoln NE 68501 USA Phone 800 228 4373 402 464 0231 FAX 402 465 3022 E mail IseoCSR teledyne com C 1 Isco Flow Poke Appendix C Replacement Parts List ON ONIMVUO 00 19 09 THIS DRAWING REPRESENTS A PROPRIETARY PRODUCT OF TELEDYNE ISCO INC LINCOLN NEBRASKA AND SHALL NOT BE RELEASED DISCLOSED USED OR DUPLICATED WITHOUT THE WRITTEN PERMISSION OF TELEDYNE ISCO INC C 2 Isco Flow Poke Appendix C Replacement Parts List Isco Flow Poke Appendix C Replacement Parts List REPLACEMENT PARTS LIST SHEET 3 OF 5 TELEDYNE ISCO INC REV C DATE 05287 602814058 AIR PUMP ASSEMBLY 602814046 POLE SECTION ASSEMBLY 603004114 SNAP BUTTON ASSEMBLY 239100001 612813101 602813083 489010100 60281401 TUBING SLEEVE ASSEMBLY 612813099 UPPER RISER POLE CLEAR ANODIZED 5 SNAP BUTTON FAST LOWER RISER PO BUBBLER T ENER SI UBE EXTE NGLE BUTTON R ANODIZED NSION E
24. ST ANTHONY FALLS HYDRAULIC LABORATORY 0 005 0 29 No 3519 ISCO Meter Calibrations a 1 59 Summary of Calibrations 3109 6 inch V Weir Meter gt 5 09 August 26 1985 Figure 1 2 Calibration Curves 6 inch V Notch Weir Meter 1 5 Isco Flow Poke Section 1 Introduction 1 8 FEE 5 o u E u EE 8 EEE E 4 5 6 8 10 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 6 inch Orifice Meter August 26 1985 50 up up 40 i EE i 20 10 ee 3 acd ok EHU EDS iP cn 3 ETE ET Or 2 1112499 4 5 6 8 10 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute Symbol Slope ST ANTHONY FALLS HYDRAULIC LABORATORY 0 005 0 299 No 3219 ISCO Meter Calibrations n o Summary of Calibrations 1 55 6 inch Orifice Meter A 3 0 August 26 1985 lt gt 5 00 Figure 1 3 Calibration Curves 6 inch Orifice Meter 1 6 Isco Flow Poke Section 1 Introduction
25. Y DATA STABILITY UNSTABLE STABLE X HAZARDOUS POLYMERIZATION MAY OCCUR MAYNOTOCCUR X CONDITIONS TO AVOID NONE KNOWN INCOMPATIBILITY MATERIALS TO AVOID MILD STEEL SECTION VII SPILL OR LEAK PROCEDURES STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED 1 FLUSH SMALL SPILLS WITH LARGE QUANTITIES OF WATER 2 LARGE SPILLS SHOULD BE COLLECTED WITH AN ABSORBENT WASTE DISPOSAL METHOD DISPOSE OF IN ACCORDANCE WITH LOCAL STATE AND FEDERAL REGU LATIONS FLUORESCEIN GREEN CONCENTRATE PAGE 2 of 3 B 3 Isco Flow Poke Appendix B Material Safety Data Sheets SECTION VIII SAFE HANDLING AND USE PROCEDURES RESPIRATORY PROTECTION N A VENTILATION PROVIDE SUFFICIENT MECHANICAL GENERAL OR LOCAL EXHAUST VENTILATION EYE PROTECTION GOGGLES PROTECTIVE GLOVES PLASTIC OR RUBBER OTHER PROTECTIVE EQUIPMENT COVERALLS OR LAB COAT SECTION IX SPECIAL PRECAUTIONS IN ACCORDANCE WITH GOOD INDUSTRIAL PRACTICES HANDLE WITH CARE AND AVOID PERSONAL CONTACT SECTION X TRANSPORTATION THIS MATERIAL IS CLASSIFIED AS NON HAZARDOUS FOR AIR AND GROUND SHIPMENTS PER DOT 49 CFR 173 120 THE INFORMATION CONTAINED HEREIN IS BASED ON THE DATA AVAILABLE TO US AND IS BELIEVED TO BE CORRECT HOWEVER DWYER INSTRUMENTS MAKES NO WARRANTY EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF DWYER INSTRUMENTS ASSUMES NO RESPONSIBILITY FOR INJURY FROM THE USE OF THE PRODUCT DE
26. ars 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 components 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 2100 m where the partial pressure of oxygen is equal to 16 2 percent a normal atmosphere is about 21 percent oxygen When first going there a person may experience 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 percent of a n
27. be is used to connect the insert s rubber collar to the foot powered air pump allowing the collar to be inflated The other tube is used to connect the insert s bubbler tube to the manometer bubbler assembly As shown in Figure 3 1 the metering insert is shipped from the factory with the removable 60 V notch weir plate flow control section installed When the V notch weir plate is removed the round orifice can be seen as shown in Figure 3 2 The diameter of the orifice is approximately 60 of the theoretical pipe diameter To remove the V notch weir plate loosen the two capti vated wing nuts on the back side of the weir plate that is inside the metering insert Then pull the weir plate up and out of the metering insert Note that the removable weir plate has a hole near the bottom that slips over the metering insert s protruding bubbler tube and two small studs on its rear side that engage the round orifice in the insert The hole and studs properly align the weir plate on the metering insert To attach the V notch weir plate to the metering insert completely loosen the two wing nuts Then generally align the hole in the bottom of the V notch weir plate above the bubbler tube on the front of the metering insert and below the bottom of the orifice reach through the insert and grasp the retaining plate on the back of the weir plate Simultaneously slip the retaining plate over the back of the round orifice plate in the metering inser
28. ble is worse than none at all Remember that the nose fails too when it comes to sensing dan gerous concentrations of 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 A 5 Isco Flow Poke Appendix A General Safety Considerations 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 in chemical plants might contain any number of harmful vapors They too are sensed by smell and explosimeter tests if they get into the public sewer Such occurrences are rare The attempt to instill a sense of urgency about real hazards is diluted 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 H5S concentrations flammable atmospheres and hazards of physical injuries Remember that much 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
29. bly to the top section of the pole assembly To do this clip the manometer bubbler assembly to the top portion of the pole as shown in Figure 3 6 This completes the field assembly of the Flow Poke Do not attach the connector on the manometer s hose to the connector on the manometer bubbler assembly at this time Push spring clips onto pole section Figure 3 6 Attaching Manometer to Pole Assembly 3 9 Isco Flow Poke Section Operation 3 4 Insertion Into the 3 10 Manhole and Pipe 3 4 1 Checking the Length 3 4 2 Insertion into the Manhole After the various pieces of the Flow Poke have been assembled in the field the next steps in its use are to lower it into the manhole to zero the manometer and to secure the metering insert in the upstream sewer pipe As a general rule the Flow Poke may be used in manholes up to 16 deep At this depth with all six regular pole sections being used the manometer bubbler assembly will be just slightly above ground level The Flow Poke may also be used in shallow manholes For very shallow man holes it may be desirable to remove the manometer bubbler assembly from the pole assembly to allow it to be read at a conve nient level Prior to inserting the Flow Poke into the manhole the overall length of the unit should be checked to be sure that it is approxi mately correct for the depth of the manhole In general it is rec ommended that the length of the pole as
30. ck strata about 79 A 7 Isco Flow Poke Appendix A General Safety Considerations Table A 1 Hazardous Gases Continued Nitrogen NO Colorless 04 60 to 150 ppm cause 50 10 Near bottom Industrial NO detector Oxides irritation and coughing wastes tube 0 Colorless Common air sweet odor 53 Asphyxiant pollutant Reddish brown 58 100 ppm dangerous Irritating odor 200 ppm fatal Deadly poison Oxygen 0 Colorless odorless ll Normal air contains Variable at dif Oxygen deple Oxygen defi tasteless Supports 20 8 of O2 Man can ferent levels tion from poor ciency indicator combustion tolerate down to 12 ventilation and Minimum safe 8 hour absorption or exposure 14 to 16 chemical con Below 10 dangerous sumption of oxy to life Below 5 to 7 gen probably fatal Ozone Os Irritant and poison 1 66 Max naturally occur 0 08 0 04 Near bottom Where ozone is Detectable odor ous Strong electrical ring level is 0 04 ppm used for disin at 0 015 ppm odor Strong oxidizer 0 05 ppm causes irrita fection Colorless At 1 ppm tion of eyes and nose 1 strong sulfur like odor to 10 ppm causes headache nausea can cause coma Symp toms similar to radia tion damage Sludge Mostly a simple Variable Will not support life No data Would 5 3 19 3 Near top of From digestion See c
31. e Isco One Year Limited Factory Service Warranty Teledyne Isco warrants covered products against failure due to faulty parts or workmanship for a period of one year 365 days from their shipping date or from the date of installation by an authorized Teledyne Isco Service Engineer as may be appropriate During the warranty period repairs replacements and labor shall be provided at no charge Teledyne Isco s liability is strictly limited to repair and or replacement at Teledyne Isco specifically disclaims any warranty of merchantability or fitness for a particular purpose This warranty applies only to products sold under the Teledyne Isco trademark and is made in lieu of any other warranty written or expressed No items may be returned for warranty service without a return authorization number issued from Teledyne Isco Teledyne Isco s sole discretion This warranty does not apply to the following products Process Analyzers SFX 3560 SFE Extractor 6100 VOC Sampler Failure of expendable items e g charts ribbon tubing lamps glassware seals and filters or from normal wear accident misuse corrosion or lack of proper maintenance is not covered Teledyne Isco assumes no liability for any consequential damages 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 Customer
32. e assembled a metering insert of the correct size and configuration for the sewer in which flow is to be measured is attached and the correct scale for this metering insert is attached to the manometer Next with the operator at ground level the assembly is lowered into the manhole and the metering insert maneuvered into the entrance pipe of the manhole The metering insert is then sealed into the sewer pipe by inflating its rubber collar using the foot powered air pump and pressure gauge This channels all the flow in the sewer through the flow control section either the round flow orifice or the V notch weir of the metering insert After the flow in the pipe has had a chance to stabilize usually a matter of a few minutes the hand bubbler is gently squeezed to force some air through the bubbler tube in the metering insert The flow rate in the pipe at that time may then be read on the manometer s scale This completes the measurement process The Flow Poke is removed from the manhole by closing the manometer s valve disconnecting a fitting to deflate and release the metering insert s collar from the pipe and pulling the unit out of the pipe and the manhole It may then be quickly disas sembled as necessary for transportation to the next measuring site N DANGER The user can be KILLED if this product comes near electric power lines As mentioned the metering inserts are calibrated flow control devices that produce an up
33. e just because there is no odor or the manhole has been entered previously Since the top of the manhole is usually flush with the sur rounding 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 permitted to carry anything in their hands as they enter the manhole to ensure that their hands are 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 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 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 manho
34. er pipe from ground level To provide a frame of reference for the remainder of this section the field operating procedures of the Flow Poke are briefly summarized below 1 Select the appropriate metering insert configuration for the sewer pipe in which the measurement is to be made The metering insert should match the diameter of the pipe 6 8 10 or 12 If the sewer is flowing more than 1 4 to 1 full the V notch weir plate should probably be removed and flow measured through the round orifice 2 Assemble the multi section pole assembly Add additional pole sections until the overall length of the pole assembly is correct for the depth of the manhole 3 Assemble the remainder of the Flow Poke Slide the 17 angle tube over the pole assembly Attach the 73 angle tube using the 12 tubing sleeve Attach the metering insert selected to the end of the right angle tube 4 Connect the inflation and bubbler hoses to their mating connectors on the metering insert Attach the inflation hose connector to its mating connector on the air pump 5 Attach the scale for the metering insert selected to the manometer bubbler assembly and snap the manome ter bubbler assembly onto the top of the upper section of the pole assembly 6 From ground level lower the unit into the manhole and rest the metering insert on a surface above the pipe or the pipe invert opening NDANGER The user can be KILLED if this product comes near elect
35. eriodically the plastic inflation bubbler hose assembly should be inspected for cuts or presence of contamination or moisture They may be cleaned by forcing water through them followed by pressurized air to dry them A replacement hose assembly is available see Appendix C Replacement Parts List for the Isco part number The other normal routine maintenance required by the Flow Poke concerns the green liquid in the manometer Liquid will periodically have to be added to the manometer to allow iy to be properly zeroed Typically the biggest cause for loss of manometer liquid will be accidents in use forgetting to close the manometer s valve The polycarbonate tubing of the manometer will also allow water to permeate out at a rate of about 8 per week when not in use M Note It is good practice to verify that there is sufficient liquid in the manometer before going out into the field It is also advisable to carry extra manometer liquid along in case of accidental spillage The liquid in the manometer should be changed every few weeks to keep it from becoming rancid If the Flow Poke is to not be used for long periods of time the manometer tube should be drained cleaned and dried prior to storage 4 1 Isco Flow Poke Section 4 Maintenance and Repairs 4 2 Repair Procedures 4 2 1 Replacing the Rubber Collar The only normal repair procedure for the Flow Poke aside from replacing damaged metal components hoses and connect
36. g insert Con nected into this line through a check valve is a hand bubbler which is used to establish an air pressure in the line equal to the water pressure upstream from the metering insert This pressure is measured by the difference in level of the green liquid in the two columns of the U tube Attached directly to the manometer is a scale showing flow rate readings in either gallons per minute or liters per second These flow rate readings correspond to a par ticular pressure reading upstream from the metering insert and are based on extensive laboratory calibration tests Two scales are furnished for each metering insert assembly one for the round orifice and one for the V notch weir Thus by using the scale appropriate for the size and configuration of metering insert being used the flow rate in the sewer may be directly read on the manometer assembly A rotary valve is furnished to allow the manometer to be sealed when not in use to prevent spillage of its liquid 1 3 Calibration Curves Isco Flow Poke Section 1 Introduction The Flow Poke is designed to be easily assembled and disas sembled in the field without the use of tools The multi section pole right angle tube and metering inserts quickly snap together The manometer bubbler assembly is attached to the pole by spring clips The manometer s flow conversion scale and the metering insert s V notch weir plate are held in place by wing nuts The pieces of the Flow Poke ar
37. id down in one leg of the manometer and up in the other The difference in inches between the menisci on the two legs of the manometer represents the pressure in inches of water upstream from the metering insert The scale installed on the manometer is made to match the calibration curve of the configu ration of the metering insert being used so that the location of the meniscus of the liquid in either leg of the manometer reg isters the flow rate in the pipe in gallons per minute or liters per second To measure the flow rate in the pipe the hand bubbler bulb should be squeezed vigorously a time or two to get air quickly into the bubbler line and force the accumulated water out of the bubbler tube in the metering insert After a few more gentle squeezes of the bulb observe the positions of the menisci in the legs of the manometer to be sure they are stable Often the flow 3 15 Isco Flow Poke Section Operation 3 5 3 Reading the Scale Figure 3 11 Reading the Flow Rate 3 16 control section will cause storage in the pipe upstream from the metering insert and a period of time in some cases up to several minutes should be allowed for flow to stabilize before a reading is taken After the menisci have stabilized squeeze the hand bubbler a few more times and check to be sure that the menisci return to the same positions on the scale N CAUTION If the flow in the pipe is large enough to result in a high reading on the mano
38. ion to measure the flow rate This is because as shown in the calibration curves in Figure 1 2 the V notch flow control section is generally more accurate than the round orifice in this overlapping range and is less affected by increased pipe slopes However this is simply a recommendation to maximize accuracy the round orifice flow control section will function throughout its calibrated range to the accuracy stated in Table 1 1 A metering insert is shown in Figures 3 1 and 3 2 The metering insert is made of anodized aluminum for corrosion resistance The insert has three integral ribs that form two annular channels n inflatable rubber collar is installed in the front channel The purpose of the collar is to seal the metering insert in the pipe and to force all the pipe s flow through the flow control section of the insert The rear channel in the metering insert is provided to aid in properly aligning the insert in the pipe by providing a longer section An aluminum bubbler tube is permanently attached to the inside of the metering insert The bubbler tube which terminates at the bottom center of the upstream face of the insert is part of the system that allows the Flow Poke to measure the pressure or head upstream from the insert The metering insert has a handle section which is used to attach it to the right angle tube attached to the pole assembly and also has two short plastic tubes terminating in tapered tubing connectors One tu
39. ite plastic base section in which it is mounted this allows the manometer to be quickly and easily zeroed in the field To obtain the maximum amount of field adjustment slide the manometer up or down in its base until equal amounts of gap exist at the top and bottom as shown in Figure 2 2 Then turn the two fittings that attach the valve assembly to the top of the manometer counter clockwise to the left until the valve assembly is suffi ciently loose to be removed from the manometer Next carefully pull the valve assembly off of the manometer 2 2 Isco Flow Poke Section 2 Preparation for Use Plastic Fittings Equal Gap at Top Bubbler Bulb Wing Nuts and Bottom Figure 2 2 and Scale Assembly 2 3 Filling the Manometer The green liquid may now be dispensed into either of the legs of the U tube manometer as shown in Figure 2 3 Add liquid until it reaches the center line on the scale adjacent to the middle wing nut Then carefully slip the valve assembly back onto the top of the manometer oriented as shown in Figure 2 2 and turn the fittings clockwise to the right until tight If bubbles have formed in the liquid turn the black knob on the side of the valve assembly to the CLOSED position as indicated by the pointer on the knob and the label on the valve body When the knob is in the CLOSED position the valves are closed sealing the top of the manometer and preventing accidental spilli
40. le the first person should reach the bottom and step off the ladder before the second 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 A 5 Traffic Protection A 6 Falling Objects A 7 Removing the Covers A 8 Other Precautions A 9 Emergencies Isco Flow Poke Appendix A General Safety Considerations In addition to traffic cones markers warning signs and barri cades a vehicle or heavy piece of equipment should be place 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 All loose items should be kept away from the manhole opening This applies to hand tools as well as stones gravel and other objects Manhole covers should be removed with a properly designed hook Use of a pick axe screwdriver or small pry bar may result in injury A suitable tool can be made from 3 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 exer cised to prevent the cover from being dropped on the toes The two inch projection should be inserted into one of the holes of the cover the handle grasped with both hand
41. low Poke Section 1 Introduction E u mS BE 5 E BE a mE BE ET a ny EB 9 Et I 4 5 6 8 109 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 10 inch Orifice Meter August 12 1985 50 40 30 20 K lo 9 2 8 o 6 5 4 2 1 4 5 6 8 10 20 30 40 50 60 60 100 200 300 400 500 600 800 1000 Gallons Per Minute Symbol Slope 0 0028 0 169 ST ANTHONY FALLS HYDRAULIC LABORATORY o No 3319 ISCO Meter Calibrations 1 55 Summary of Calibrations A 3 05 10 inch Orifice Meter gt 5 0 August 12 1985 Figure 1 7 Calibration Curves 10 inch Orifice Meter Inches of Water Inches of Water A Isco Flow Poke Section 1 Introduction 20 30 40 50 60 80 100 200 300 400 500 600 800 1000 Gallons Per Minute ST ANTHONY FALLS HYDRAULIC LABORATORY No 3J19 ISCO Meter Calibrations Summary of Calibrations 12 inch V Weir Meter August 5 1985
42. man weight 10 11 12 13 Gently squeeze the hand bubbler a number of times to force air out of the bubbler tube in the metering insert Observe the position of the meniscus in the manometer to be sure that it is stable Often the flow control section will cause storage in the pipe upstream from the metering insert and a period of time should be allowed for flow to stabilize before a reading is taken After the position of the meniscus has stabilized squeeze the hand bubbler a few more times and check to be sure the meniscus returns to the same position on the scale The reading in GPM gal lons per minute or LPS liters per second on the scale cor responding to the position of the meniscus is the current flow rate through the pipe Disconnect the bubbler connector on the hose assembly from its mating connector on the manometer bubbler assembly and close the valve on the manometer Disconnect the connector on the air pump hose to release the pressure in the metering insert s collar releasing it from the pipe Pull the unit out of the manhole 3 2 Selecting the Metering Insert Configuration 3 2 1 Size of Inserts 3 2 2 Selection of Flow Control Section 3 2 3 Overlap in Ranges Isco Flow Poke Section 3 Operation DANGER The user can be KILLED if this product comes near electric power lines 14 Disassemble the Flow Poke to the degree desired to allow it to be transported The first step in using the
43. measurements use the following conversions 1 inch 2 54 centimeters 1 gallon per minute 06309 liters per second 1 4 Technical Specifications The following table contains technical specifications for the Isco Flow Poke The scales let you measure flow rate in either gallons per minute or liters per second Specifications for both methods are provided in the table Table 1 1 Technical Specifications for the Isco Flow Poke English Units Metric Units Six 75 m pole sections right angle extension four metering inserts with detachable weir plates and a reversible scale for each 15 cm 20 cm 25 cm 30 cm manome Six 21 o ft pole sections right angle extension four metering inserts with detachable weir plates and a reversible scale for each 6 8 10 12 manometer bubbler Equipment Supplied assembly foot powered air pump inflation bubbler hose assembly wooden rest instruction manual and miscellaneous accessories ter bubbler assembly foot pow ered air pump inflation bubbler hose assembly wooden rest instruction manual and miscella neous accessories Net Weight 19 Ibs 8 6 kg Typical Usable Depth of Sewers 16 ft 4 9m Typical accuracy for pipe slopes of 21 2 or less and exclusive of improper installation or uses and of visual limitations of reading the manometer 1 GPM up to 20 GPM 2 GPM for 20 to 40 GPM 5 of reading above 40 GPM 063 Ips up to 1 2
44. meter vigorous pumping of the bubbler should be avoided since this may easily bounce green liquid out of the side of the manometer vented to atmosphere resulting in the need to add more green liquid The reading on the scale corresponding to the bottom of the meniscus in either leg of the manometer is the current flow rate through the sewer as shown in Figure 3 11 Note that the flow rate may be read on either leg of the manometer as shown Note also that the readings on both legs should be the same If they are not the manometer should be zeroed as described previously Read at bottom of meniscus The accuracy of the flow rate measurement using the Flow Poke is as specified in Table 1 1 Note that these specifications apply to pipes with slopes of 21 296 and less If the pipe in which the flow is being measured has a slope greater than this a correction to the reading obtained should be applied to get the most accurate flow rate measurement The correction may be deter mined by referring to the calibration curves in Figure 1 2 with the raw data points plotted 3 6 Removal and Disassembly 3 6 1 Deflating the Rubber Collar 3 6 2 Inspection of Metering Insert Isco Flow Poke Section Operation After a flow rate reading in the pipe has been obtained the Flow Poke may be removed from the pipe and manhole and disas sembled for transportation The first step in this process is to dis connect the male bubbler connecto
45. mplish this the manual is organized into four sections The first section is a general introduction to the Flow Poke The second section concerns the initial assembly necessary before using the unit The third section contains the operating procedures for field use of the unit The fourth and final section includes information on routine maintenance repair procedures and replacement parts 1 2 Description of the The Flow Poke is a patented portable instrument designed to Flow Poke allow the user to quickly obtain an accurate individual flow rate reading in a sewer pipe from ground level without entering the manhole Usable in 6 8 10 and 12 diameter sewers in man holes up to 16 feet deep the Flow Poke can measure flow rates ranging from 1 to 640 gallons per minute with 5 accuracy Figure 1 1 Flow Poke 1 1 Isco Flow Poke Section 1 Introduction 1 2 1 Metering Insert 1 2 2 Multi Section Pole Assembly 1 2 8 Manometer Bubbler Assembly The Flow Poke consists of a metering insert a multi section pole assembly and a manometer bubbler assembly The metering insert is a calibrated flow control section that generates an upstream head or pressure that is related to a particular flow rate in the pipe Four different metering insert assemblies are supplied with the Flow Poke for use in 6 8 10 and 12 diameter pipes Each metering insert has an integral round orifice flow control section that is 0 6 the diameter of
46. ng hole and push the smaller section in until the snap pops into the hole secur ing it in place The sections are disassembled by pressing in on the snap and pulling the sections apart Continue to add regular pole sections in this manner until the desired overall pole length is achieved After the pole has been assembled the next step is to attach the metering insert selected for use to the pole assembly using the right angle pole assembly First the 17 upper riser pole is attached to the bottom of the pole assembly The 12 tubing sleeve assembly attaches to the bottom straight end of the upper riser pole Then the 73 lower riser pole snaps onto the Isco Flow Poke Section 3 Operation tubing sleeve connecting the two riser poles as shown in Figure 3 3 This orientation positions the front face of the metering insert approximately 215 6 from the center line of the pole this has been found to be the preferred orientation for many manhole situations However the tube is designed so that it is reversible and may be oriented in the opposite direction This orientation may be helpful in certain unusual or difficult manhole configura tions When the tube is reversed the distance from the front face of the insert to the center line of the pole is approximately 413 ft B 17 Angle 12 Tubing Sleeve 73 Angle Figure 3 3 Right Angle Riser Pole Assembly 3 3 4 Attaching the Hose Assembly After the 73 angle lower
47. ng of the green liquid Then slowly tip the manometer upside down several times If this does not cause the bubbles or foam to disappear reduce the concentration of fluorescein in the water by adding more water The liquid not initially added to the manometer should be reserved for future use in the field to com pensate for spillage or evaporation 2 3 Isco Flow Poke Section 2 Preparation for Use Figure 2 3 Filling the Manometer 2 4 Note Any time the manometer is not being used especially when being transported or stored in a horizontal position the valves should be closed Otherwise the green liquid may run into the bubbler tubing If the green liquid is allowed to run out of the manometer into the bubbler tubing the bubbler tubing will have to be purged and more liquid added to the manometer as described above Isco Flow Poke Section 3 Operation 3 1 Summary of Operating Procedures The following text provides step by step procedures for the field use of the Flow Poke Included are sections covering the selection of the proper metering insert configuration field assembly of the unit insertion into the manhole and pipe measuring the flow rate and removal and disassembly These procedures assume that the initial manometer assembly described in Section 2 has been performed The Flow Poke is a portable instrument designed to allow the user to quickly obtain an accurate individual flow rate reading in a sew
48. 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 Service Phone 800 775 2965 Analytical 800 228 4373 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 www isco com Revised September 15 2005 Isco Flow Poke Table of Contents Section 1 Introduction 11 1 2 1 3 1 4 Manual Organization 1 1 Description ofthe Flow Poke 1 1 1 2 1 Metering Insert 0 1 2 1 2 2 Multi Section Pole Assembly 1 2 1 2 3 Manometer Bubbler Assembly 1 2 Calibration Curves s resan CR Bade ewe eee ten Ss Oy v d 1 3 Technical Specifications 1 4 Section 2 Preparation for Use 2 1 2 2 2 3 Unpacking si Cs IS pom were earth eee wee S US ea 2 1 2 1 1 Optional Carrying Case 2 1 Preparing the Manometer 2 2 Filling the Manometer cece cece 0 2 3 Section 3 Operation 3 1 3 2 3 3
49. ompo Gas asphyxiant May be vary widely with structure of sludge nents practically odorless composition tasteless Sulfur SO Colorless pungent 2 26 Inflammation of the 50 10 Atbottom can Industrial waste Detectable taste Dioxide odor Suffocating cor eyes 400 to 500 ppm to combine with combustion and odor atlow rosive poisonous immediately fatal 100 water to form common air pol concentration non flammable sulfurous acid lutant Toluene 5 12 Colorless benzene like 3 14 At 200 500 ppm head 200 100 127 7 0 Atbottom Solvent Combustible gas to odor ache nausea bad taste indicator CoH 29 lassitude Turpentine CjgHjg Colorless Characteris 4 84 Eye irritation Head 100 At bottom Solvent usedin 1 Detectable tic odor ache dizziness nau paint odor at low sea irritation of the concentrations kidneys 2 Combustible gas indicator Xylene Colorless flammable 3 66 Narcotic in high con 100 11 7 0 At bottom Solvent Combustible gas centrations less toxic indicator than benzene 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 occasionally traces of carbon monoxide A 8 Isco Flow Poke Appendix B Material Safety Data Sheets The Material Safety Data on the following pages refers to the content and safety of Fluore
50. on the manometer bubbler assembly To zero the manometer first turn the knob shown in Figure 3 8 on the side of the manometer s valve assembly to the OPEN position Then gently squeeze the hand bubbler a few times and be sure that the outlet tubing of the manometer bubbler assembly is free of green manometer liquid If there is liquid present repeatedly squeeze the bubbler bulb until it is expelled FLOW POKE ISCO US PATENT NO 4571997 Figure 3 8 Flow Poke Manometer Valve Assembly Isco Flow Poke Section Operation 3 4 4 Connecting the Bubbler Hose Attach the male connector on the hose assembly to its mating female connector on the manometer bubbler assembly indicated in Figure 3 8 Note that the connectors on the hose assembly are of opposite sex and cannot be misconnected Gently squeeze the bubbler s bulb a few more times After the liquid in the manometer has stabilized check to be sure that the meniscus concave surface of the column of liquid in each leg of the manometer is aligned with the center mark on the manometer s scale as shown in Figure 3 8 and that the menisci are level with each other Meniscus Figure 3 9 Manometer Zero Alignment 3 12 3 4 5 Adjusting the Scale M Note The reading point of a manometer is traditionally the bottom of the meniscus as shown in Figure 3 8 not the top surface of the liquid If the menisci are not aligned with the center mark on the scale slide the U
51. ore of the regular pole sections may be attached to the upper section to form a pole assembly ranging in length from 5 ft one regular section to 15 ft six regular sections The regular sections consist of 8 diameter anodized aluminum pole with a black plastic union permanently attached to the top end and a stainless steel snap button near the bottom end The regular sec tions have an actual overall length of 321 4 and an effective length of 292 The pole assembly is multi sectioned for three reasons 1 to allow it to be broken down into small sections to aid in transport 2 to allow its length to be easily adjusted to match the manhole depth and 3 to provide electrical insulation between the sections to reduce the danger from overhead elec trical power lines The first step in the field assembly of the Flow Poke is to assemble the multi section pole to the correct length for the depth of the manhole In general it is recommended that the pole be assembled to result in an overall length such that when the metering insert is installed in the sewer the top of the manometer and scale should be approximately at the user s eye level Note All of the various sections of the Flow Poke are attached to each other by stainless steel snaps which pop into mating holes in the matching section To join two sections depress the snap slide the smaller diameter section into the larger sec tion so that the snap is aligned with the mati
52. ormal atmosphere At the top of Mt Whitney oxygen is equal to 12 2 percent 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 percent Isco Flow Poke Appendix A General Safety Considerations 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 It seems unlikely that anyone has ever died in a sewer from suf focation that is 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 unimportant but they rarely measure Death has occurred where it is unlikely that there was any measurable reduction in the oxygen concentration Wastewater containing 2 mg l of dis solved sulfide and a
53. ors concerns the replacement of the metering insert s inflatable rubber collar The rubber collar is made of a heavy gauge tough material and is designed to withstand the rough environment of a sewer However overinflation or sharp edges in the manhole may on rare occasions cause damage to the collar Replacement inflatable collars and clamps are available from Teledyne Isco Refer to Appendix C Replacement Parts List for part numbers N CAUTION When using or servicing wastewater monitoring equipment always observe safety precautions and wear the appropriate protective clothing i e gloves goggles etc The collar is replaced as follows First remove the weir plate from the front of the metering insert to provide easier access to the inside of the insert Then use a flat screwdriver to loosen and remove the hose clamp from the metal stem of the collar Pull the plastic hose off the metal stem Next peel the collar off the insert starting opposite the stem as shown in Figure 4 1 To install the new collar first feed the stem through the hole in the insert with the stem facing the end with the handle Then roll the collar onto the metering insert Next slip a hose clamp over the plastic hose push the hose over the stem about 3 3 beyond the threads and then slide the clamp down the stem to a position between the threads and the end of the hose Finally tighten the clamp with the screwdriver to secure the hose to the stem
54. ose Connectors To 1 Air Manometer Pump Figure 3 5 Air Pump Connection and Pressure Gauge 3 8 Isco Flow Poke Section 3 Operation 3 3 5 Attaching the Scale After the metering insert has been attached to the pole assembly the appropriate scale for the metering insert configuration chosen should be attached to the unit s manometer Four reversible manometer scales are supplied with the Flow Poke one for each of the four sizes 6 8 10 and 12 of metering inserts The scale for the V notch weir flow control section of a particular insert size is on one side of the scale plate while the round orifice scale for that insert size is on the other side Select the correct scale for the metering insert configuration being used for example 8 V notch weir Refer to Appendix C Replacement Parts List for the identifying numbers of the scales Then attach the appropriate scale to the manometer by removing the three wing nuts on the manometer slipping the scale over the three studs with the correct side of the scale facing out and reat taching and tightening the wing nuts M Note While handling the manometer be sure that its knob indicated in Figure 3 8 is in the CLOSED position Otherwise the manometer s solution may be inadvertently spilled 3 3 6 Attaching the After the correct scale has been attached to the manometer the Manometer Bubbler final step in the field assembly is to attach the Assembly manometer bubbler assem
55. ounded by a full section of the pipe as shown in Figure 3 10 This is to provide maximum natural centering of the insert in the pipe Depending upon conditions in the manhole and pipe for example a high flow an oval or undersized pipe etc sliding the metering insert into the pipe may prove to be difficult In these cases the metering insert should be rocked from side to side or top to bottom while simultaneously applying pressure to push the insert into the pipe Upstream face of metering insert per pendicular to oncom ing flow Back end of insert totally surrounded by a full section of the pipe Figure 3 10 Installing the Metering Insert 3 13 Isco Flow Poke Section Operation 3 14 3 4 7 Inflating the Rubber Collar 3 4 8 Monitoring the Collar Pressure Secure the metering insert in place by inflating its rubber collar using the foot powered air pump The pressure in the collar can be monitored on the pressure gauge attached to the pump shown in Figure 3 5 The smaller inserts 6 and 8 should be inflated to a pressure of approximately 15 20 psi while the larger inserts 10 and 12 should be inflated to a pressure of 10 15 psi This should secure the metering insert in place in the pipe and seal it channeling all the flow through the flow control section Note While inflating the rubber collar be sure the pole is centered over the pipe in a plumb orientation in the manhole This is to ens
56. r from its mating connector on the manometer bubbler assembly Then turn the knob on the side of the manometer s valve assembly to the CLOSED position to seal both legs of the manometer M Note It is very important that the manometer s valve be closed before the Flow Poke is removed from the manhole Otherwise there is a good chance that liquid may be spilled from the manometer It is good practice even with the valves closed to transport the manometer assembly sufficiently upright so that the green manometer fluid is not in contact with the valve assembly Remove the hose connector from the air pump This will release the pressure from the inflatable rubber collar around the metering insert freeing the insert from the pipe The connector may be reattached once the pressure is released The metering insert may then be pulled out of the pipe into the invert in the manhole and the entire unit pulled up and out of the manhole NDANGER The user can be KILLED if this product comes near electric lines When the aluminum pole is assembled to maximum length the Flow Poke can be almost 18 tall Use extreme care to avoid overhead power lines when removing the unit As the unit is being removed from the manhole it is good practice to inspect the metering insert for the presence of any sig nificant obstructions which may have become lodged on it If any are present they should be removed and the flow reading rechecked Disassembly
57. ric power lines 3 1 Isco Flow Poke Section Operation 3 2 Turn the black knob to open the manometer valve Gently squeeze the bubbler s bulb a few times and check to be sure that the bubbler outlet is free of green manometer solution Then attach the bubbler connector on the hose assembly to its mating connector on the manometer bubbler assembly and gently squeeze the bubbler s bulb a few more times After the solution in the manometer has stabilized check to be sure that the menisci in the manometer are aligned with the center mark on the scale If not slide the manom eter up or down until alignment is achieved Maneuver the metering insert into the entrance pipe of the manhole Use the foot powered air pump to inflate the metering insert s rubber collar sealing the insert in the pipe The pressure in the collar may be monitored on the pressure gauge attached to the pump The smaller inserts 6 and 8 should be inflated to a pressure of approxi mately 15 20 psi while the larger inserts 10 and 12 should be inflated to a pressure of 10 15 psi It may be desirable especially when measuring low flows to place the wooden rest across the manhole and anchor it in place with sandbags Use the rest to center the pole over the pipe in a plumb orientation in the manhole steadying it while the flow rate reading is being taken N WARNING Do not stand on the wooden rest It is not intended for the support of hu
58. rifice 3 5 3 3 Right Angle Riser Pole Assembly 3 7 3 4 Metering Insert Connections 3 8 3 5 Air Pump Connection and Pressure Gauge 3 8 3 6 Attaching Manometer to Pole Assembly 3 9 3 7 Lowering the Flow Poke into the Manhole 3 11 3 8 Flow Manometer Valve Assembly 3 11 3 9 Manometer Zero Alignment 3 12 3 10 Installing the Metering Insert 3 13 3 11 Reading the Flow Rate 3 16 4 1 Changing the Inflatable Collar 4 2 List of Tables 1 1 Technical Specifications for the Flow Poke 1 4 1 Hazardous Gases Rim bee tee ebb ke ee ee A 6 Isco Flow Poke Section 1 Introduction This section of the Flow Poke instruction manual provides a general introduction to the unit It consists of a brief discussion of the organization of the manual an overall description of the unit a list of technical specifications and calibration curves 1 1 Manual Organization The purpose of this manual is to provide the user with the infor mation necessary to assemble operate maintain and repair the Flow Poke To acco
59. s and the cover lifted by straightening the legs which have been slightly bent at the knees Other precautions which should be taken when entering a manhole are e Wear a hard hat Wear coveralls or removable outer garment which can readily be removed when the work is completed Wear boots or non sparking safety shoes Wear rubberized or waterproof gloves Wear a safety harness with a stout rope attached Do not smoke e Avoid touching yourself above the collar until you have cleaned your hands 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 A 3 Isco Flow Poke Appendix A General Safety Considerations A 10 Field Equipment A 11 Lethal Atmospheres in A 4 Sewers The following equipment must be available for use Blowers Gloves 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 Traffic Cones Waders The following 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 ye
60. s in countries outside the USA where Teledyne Isco has an authorized dealer should contact their Teledyne Isco dealer for warranty service In the event of instrument problems always contact the Teledyne Isco Service Department as problems can often be diagnosed and corrected without requiring an on site visit In the U S A contact Teledyne Isco Service at the numbers listed below International customers should contact their local Teledyne Isco agent or Teledyne Isco International Customer Service Return Authorization A return authorization number must be issued prior to shipping Following authorization Teledyne Isco will pay for surface transportation excluding packing crating both ways for 30 days from the beginning of the warranty period After 30 days expense for warranty shipments will be the responsibility of the customer Shipping Address Teledyne Isco Inc Attention Repair Service 4700 Superior Street Lincoln NE 68504 USA Mailing address Teledyne Isco Inc PO Box 82531 Lincoln NE 68501 USA Phone Repair service 800 775 2965 lab instruments 800 228 4373 samplers amp flow meters Sales amp General Information 800 228 4373 USA amp Canada Fax 402 465 3001 Email service isco com Web site www isco com gt TELEDYNE ISCO August 8 2005 P N 60 1002 040 Rev B A Teledyne Technologies Company
61. s or injuries to hands and feet may result 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 A 1 Isco Flow Poke Appendix A General Safety Considerations A 3 Adverse Atmospheres A 4 Entering Manholes A 2 Refer to Table A 1 Before entering a manhole tests should be made for explosive atmosphere presence of hydrogen sulfide and oxygen deficiency Since combustible or toxic vapors may be heavier than air the tests on the atmosphere must be run at least 4 of the way down the manhole Whenever adverse atmosphere is encountered forced ventilation must be used to create safe conditions After the ventilating 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 equipment 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 saf
62. s section of the Flow Poke instruction manual provides direc tions for the initial assembly of the unit Included is information about unpacking the Flow Poke from its shipping cartons and the assembly necessary prior to initial use 2 1 Unpacking The Flow Poke is shipped in two separate containers When unpacking the unit the following items will be found in these containers The large flat box contains the right angle tube the inflation bubbler hose assembly the instruction manual and an accessory package The accessory package contains a 3 4 oz bottle of fluorescein green concentrate four extra hose connectors and the 8 oz polyethylene bottle with spout cap The large rectan gular box contains the six 2l 2 foot pole sections the four metering inserts their four reversible scales the manometer bubbler assembly the foot powered air pump and the wooden rest The wooden rest is wrapped in a cardboard filler placed in the top of the box The manometer is contained in a long triangular carton wedged into the cardboard insert that houses the metering inserts 2 1 1 Optional Carrying Case Optionally available for use with the Flow Poke is a carrying case shown in Figure 2 1 This carrying case is designed to hold the four metering inserts and their scales the manometer bubbler assembly the six pole sections and the wooden rest When the carrying case is ordered with the Flow Poke these items will be shipped in the carrying case
63. scein Green Concentrate Specific questions regarding the use and handling of this product should be directed to the manufacturer listed on the MSDS B 1 Isco Flow Poke Appendix B Material Safety Data Sheets DWYER INSTRUMENTS INC MATERIAL SAFETY DATA SHEET DATE PREPARED 09 19 01 SECTION I MATERIAL IDENTIFICATION NAME FLUORESCEIN GREEN CONCENTRATE MANUFACTURER DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY IN 46360 TELEPHONE 219 879 8000 PRODUCT NUMBER 71 440132 00 HAZARDS HEALTH 2 FLAMMABILITY 0 REACTIVITY 0 PP B WHMIS CLASSIFICATIONS CLASS D DIVISION 2 SUBDIVISION B CLASS B DIVISION 3 SECTION II HAZARDOUS INGREDIENTS COMPONENTS CAS NUMBER NOTES DWYER FLUORESCEIN GREEN CONCENTRATE MIXTURE 1 SODIUM TETRADECYL SULFATE 139 88 8 Q 2 DIETHYLENE GLYCOL ETHYL ETHER 111 90 0 Q 3 DISTILLED WATER 7732 18 5 1 4 TRIPHENYLMETHANE 3844 45 9 1 5 XANTHENE 518 47 8 1 NOTES PERCENT 100 15 40 15 40 15 40 1 1 1 1 1 BASED ON DATA AVAILABLE DWYER THESE COMPONENTS ARE NOT HAZARDOUS UNDER OSHA HAZARD COMMUNICATION 29 CFR 1910 1200 2 TOXICITY DATA NOT AVAILABLE FOR THESE COMPONENTS THESE COMPONENTS OF THIS PRODUCT ARE NOT LISTED WITH NTP IARC OR OSHA EXCEPT WHERE NOTED SECTION III PHYSICAL DATA BOILING POINT NOT AVAILABLE VAPOR PRESSURE NOT AVAILABLE VAPOR DENSITY AIR 1 NOT AVAILABLE SOLUBILITY IN WATER MISCIBLE SPECIFIC GRAVITY H20 1
64. sembly be such that when the metering insert is installed in the sewer the manometer and scale should be near the user s eye level If the length is not correct add or remove pole sections as required After the length of the pole assembly has been checked the Flow Poke should be lowered into the manhole as shown in Figure 3 7 with the user at ground level NDANGER The user can be KILLED if this product comes near electric power lies The Flow Poke when its aluminum pole is assembled to maximum length can be almost 18 feet tall The user should be very observant and take extreme care to avoid overhead electric power lines when installing the unit into the manhole Figure 3 7 Lowering the Flow Poke into the Manhole 3 4 3 Zeroing the Manometer Isco Flow Poke Section 3 Operation Mele tos PP Kaka Spe ANY war 93 It may be necessary to tilt the unit to get the metering insert and right angle tube through the manhole opening as shown Lower the unit into the manhole and rest the metering insert on a surface above the pipe or the pipe invert Be sure it is not in the flow in the pipe This is to allow the manometer to be zeroed It is good practice at a new site to always confirm that the manometer s zero or rest position is aligned with the center mark on the manometer s scale Note that during the zeroing of the manometer the male connector on the hose should not be attached to the female connector
65. st ani der and feed line at low concen detectable in very low mals in a very short leaks trations concentrations time at 0 1 Non flammable Formal CHO Colorless pungent suf 1 07 Irritating to the nose 10 7 0 73 0 Near bottom Incomplete Detectable odor dehyde focating odor combustion of organics Com mon air pollut ant fungicide Gasoline 5 12 Volatile solvent 3 0 Anesthetic effects 4 000 1 000 13 6 0 At bottom Service stations 1 Combustible to Colorless Odor notice to when inhaled Rapidly to garages storage gas indicator 2 able at 0 03 Flam 4 0 fatal at 2 4 Danger 7 000 tanks houses mable ous for short exposure 2 Oxygen at 1 1 to 2 2 deficiency indicator Hydrogen Ho Simple asphyxiant 0 07 Acts mechanically to 40 740 Attop Manufactured Combustible gas Colorless odorless deprive tissues of oxy gas sludge indicator tasteless Flammable gen Does not support digestion tank life gas electrolysis of water Rarely from rock strata Hydrogen HCN Faint odor of bitter 0 93 Slight symptoms 10 6 0 40 0 Neartop Insecticide and Detector tube Cyanide almonds appear upon exposure rodenticide Colorless gas to 0 002 to 0 004 0 3 rapidly fatal Gas Chemical Common Specific Physiological Max Max Explosive Likely Most Simplest and Formula Properties Gravity or Effect Safe Safe Range Location Common Cheapest Vapor 60 Min 8Hour by vol of Sources Safe Method
66. stream water head or pressure which is directly related to a known flow rate The calibrations on the Flow Poke s metering inserts were performed at the St Anthony Falls Hydraulic Laboratory at the University of Minnesota Included in Figures 1 2 through 1 9 are the final calibration curves developed for the V notch weir and round orifice flow control sections of the 6 8 10 and 12 metering inserts The inches of water on the curves are referenced to the outlet of the bubbler tube in the upstream face of the metering insert Note that these calibration curves are included here for reference only The calibration data was used to formulate the scales furnished with the metering inserts Also included are the same calibration curves with the raw data points plotted on them As shown data was collected for typical pipe slopes of 0 005 0 29 for a 6 pipe 1 3 Isco Flow Poke Section 1 Introduction 0 004 0 23 for an 8 pipe 0 0028 0 16 for a 10 pipe and 0 0022 0 13 for a 12 pipe Additionally data was also collected for more extreme slopes of 0 026 1 5 0 052 39 and 0 087 5 for 6 8 10 and 12 pipes The raw data points are included to allow the user to judge and in some cases compensate for the effects of pipe slope on the accuracy of the Flow Poke The calibration curves in Figures 1 2 through 1 9 present the data in inches and gallons per minute If you are using metric
67. t and slide the weir plate down along the face of the orifice toward the bubbler tube Isco Flow Poke Section 3 Operation Then slip the hole in the weir plate over the insert s bubbler tube making sure that the studs on the back of the weir plate fall inside the orifice opening Finally holding the weir plate in place tighten the two wing nuts locking the V notch weir plate in place by squeezing the retaining plate down on the orifice plate of the metering insert Handle Tubing Connectors 60 V Notch Weir Plate Rubber Collar Bubbler Tube Figure 3 1 Metering Insert with V Notch Weir Figure 3 2 Metering Insert with Round Orifice 3 5 Isco Flow Poke Section Operation 3 3 Field Assembly 3 6 3 3 1 Multi Section Pole Assembly 3 3 2 Assembling the Pole 3 3 3 Attaching the Metering Insert After the appropriate metering insert and flow control section have been selected the next step is to assemble the Flow Poke s various pieces which are disassembled to aid in transportation This field assembly consists of assembling the multi section pole attaching the metering insert to the pole attaching the appro priate scale to the manometer and attaching the manometer bubbler assembly to the pole assembly The main structure of the Flow Poke for reaching down into the manhole is the multi section pole assembly The pole assembly consists of six 21 2 ft regular pole sections or m
68. t a pH of 7 0 can produce in a chamber with high turbulence a concentration of 300 ppm in the air This is considered to be a lethal concentration Many people have died from H58 not only in sewers and industries but also from swamps and from hot springs In one resort area at least five persons died from poisoning before the people were ready to admit that H S is not a therapeutic agent Hardly a year passes in the U S without a sewer fatality from H5S as well as deaths elsewhere in the world The presence of H3S in a sewer atmosphere is easily determined A bellows and ampoule type of tester is very satisfactory for the purpose even though it is 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 H5S concentration 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 55 in the air have been marketed Some of them are known to be unreliable and we know of none that have proved dependable Do not use one unless you check it at frequent intervals against air containing known H5 8 concentrations A supposed safety device that is unrelia
69. the entrance pipe Typically these problems are encountered in pipe inverts where the top half of the pipe is not completely removed or the entrance pipe is par tially blocked by solid debris or protruding concrete left over from construction If these conditions are found the best solution is to enter the manhole following proper safety procedures and take what action is necessary to open up the pipe invert or remove the entrance pipe blockage Another possible solution although not generally recommended is to use the next size smaller metering 3 5 Measuring the Flow Rate 3 5 1 Operation of Manometer Bubbler Assembly 3 5 2 Flow Rate Isco Flow Poke Section 3 Operation insert Sometimes the insert may be sufficiently inflated to seal under these conditions However this procedure will reduce the maximum measurable flow and can weaken or damage the insert s inflatable collar If the next smaller size of insert is used inflate the collar with the minimal amount of pressure necessary to seal the metering insert in place Pressure at or below 10 psi is recommended to avoid possible damage to the collar Additional care should be given to the orientation of the metering insert to minimize loss of accuracy in the flow readings After the metering insert has been installed in the entrance pipe of the manhole the next step is to actually measure the flow rate in the pipe The present flow rate in the pipe is measured using the Flo
70. ure that the metering insert is properly oriented in the pipe so that the center line of the orifice or V notch weir is straight up and down and that the upstream face of the metering insert is perpendicular to the oncoming flow During the actual flow measuring operation the pressure in the collar should be periodically monitored on the pressure gauge Should the pressure fall slowly it is likely that the connectors on the pump or metering insert ends are not sufficiently secure If this is not the case check the tubing itself and the tubing ends where the connectors are attached Finally if desired lay the wooden rest across the manhole and adjust its position to center the pole over the pipe in a plumb ori entation in the manhole The purpose of the rest is to steady the unit in place while a flow rate reading is being taken and is especially useful for low flow conditions where it may take some time for the flow through the metering insert to stabilize The rest may be anchored in place by user supplied sandbags if desired WARNING Do not stand on the wooden rest or use it inappropriately It is not intended to support a user s weight and may slip from place Improper use may result in personal injury Although the outside diameter of the metering insert is approxi mately 90 of the theoretical pipe inside diameter there may be instances in which the insert can not be successfully lowered into the pipe invert or slid into
71. w Poke s manometer bubbler assembly This assembly consists of the shut off valve assembly the U tube manometer and the hand bubbler bulb Refer to Figure 2 2 The shut off valve assembly consists of two fittings for attaching the two legs of the U tube manometer to the valve body Each fitting houses a grommet which when tightened retains and seals a leg of the manometer The valve assembly includes a valve to seal each side of the manometer The black knob on the side of the valve body turns a valve cam that in the OPEN up position opens the valves and in the CLOSED down position closes the valves A T fitting on the top of the valve body connects the manometer to the bubbler line in the metering insert through two sets of connectors and a 20 ft hose on one side and to the hand bubbler bulb on the other side A check valve is located between the hand bubbler and the T fitting to prevent air from flowing back through to the hand bubbler When the hand bubbler is squeezed it forces air into the manometer and the bubbler line on the other side of the check valve Air will flow out of the bubbler tube in the metering insert until the air pressure in the bubbler line is equal to the water pressure or head in the pipe upstream of the flow control section of the insert This pressure is applied to one leg of the manometer through the T fitting The other leg of the manometer is vented to the atmosphere Thus the air pressure forces the liqu

Flow Poke User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents