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Differential Pressure Field Unit

1. Pascals 11 pascals KiloPascals 12 kilopascals Torr 13 torricellis Atmospheres 14 atmospheres TInH20At 60F 145 inches of water at 60 degF CmH20At 4C 170 centimeters of water at 4 degC MetH20At4C 171 meters of water at 4 degC CmHgAt0C 172 centimeters of mercury at 0 degC PSF 173 pounds per square foot HectoPascals 174 hectopascals PSIA 175 pounds per square inch absolute KGPerSqMeter 176 kilograms per square meter FtH20At4C 177 feet of water at 4 degC FtH20At60F 178 feet of water at 60 degF MetHgAt0C 179 meters of mercury at 0 degC MegaPascals 237 megapascals InH20At4C 238 inches of water at 4 degC MMH20At 4C 239 millimeters of water at 4 degC Volumetric Flow Units CuFtPerMin 15 cubic feet per minute GalPerMin 16 gallons per minute LiterPerMin 17 liters per minute ImpGalPerMin 18 imperial gallons per minute CuMeterPerHr 15 cubic meter per hour GalPerSec 22 gallons per second MillionGalPerDay 23 million gallons per day LiterPerSec 24 liters per second MillionLiterPerDay 25 million liters per day CuFeetPerSec 26 cubic feet per second CuFeetPerDay 27 cubic feet per day CuMeterPerSec 28 cubic meters per second CuMeterPerDay 29 cubic
2. Tf the field unit is not communicating with the Base Radio i e NO RF all under score characters will be displayed The RSSI is measured every time the Field Unit receives a message from the Base Radio The signal strength of the received message from the Base Radio is calculated during this time The actual signal strength in dBm for each range is shown below a 105 dBm amp 100 dBm amp 95 dBm amp 90 dBm amp 85 dBm amp 105 dBm 100 dBm 95 dBm 90 dBm 85 dBm 80 dBm 80 dBm To place the Field Unit in RSSI Diagnostic mode follow the menu map shown on the following page in Figure 3 2 Note that the RSSI menu is under the DIAGNSE menu and not the CONFIG menu NEXT ee o NEXT FACTORY NEXT gt f EXIT ENTER USER PROMPTED FOR l I PASSWORD UF Figure 3 2 Menu Map to RSSI Mode Rev 1 57 5 Accutech Wireless Differential Pressure Field Unit User Manual 3 1 2 1 Continued While using slower baud rate increases communi cation distance it also requires more time to com plete a communications cycle This may not be suitable for your application Now that the Field Unit is in the RSSI mode bring the Field Unit close to the equipment you wish to monitor Look at the LCD notice the gt will constantly fluctuate One should estimate an average value based on these fluctuations While the ideal signal integrity is seven arrows the suggested fluctuating arr
3. The next industrial revolution is right now Let Accutech show you how to realize gains in operating efficiency Visit us at www accutechinstruments com Or call us at 1 800 879 6576 Specifications subject to change without notice Printed in USA Copyright 2005 Adaptive Instruments Corp A Division of Adaptive Instruments Corp 577 Main Street Hudson MA 01749 U S A TEL 800 879 6576 978 568 0500 FAX 978 568 9085 Email wireless adaptiveinstruments com Website www accutechinstruments com
4. yg 20 21 14 15 16 20 60 61 62 64 64 65 125 Se 2 7 70 Fil 72 Tay 74 T5 76 TT 78 TS 80 Bi 82 83 84 85 86 87 88 f feet per second meters per second inches per second inches per minute feet per minute meters per hour gallons liters imperial gallons cubic meters barrels bushels cubic yards cubic feet cubic inches liquid barrels 1 bbl lig 1 5 US gallons normal cubic meter MKS System normal liter MKS System standard cubic feet US System hectoliters feet meters inches centimeters millimeters see Note 1 in HART document HCF_SPEC 183 minutes seconds hours days grams kilograms metric tons pounds short tons long tons ounce second minute hour per second per minute kilograms per hour kilograms per day metric tons per minute metric tons per hour metric tons per day pounds per second pounds per minute grams per grams per grams per kilograms kilograms pounds per hour j Rev 1 57 pounds per day short tons per minute short tons per hour short tons per day long tons per hour long
5. Accutech D A Differential Pressure Field Unit User Manual A Division of Adaptive Instruments Corp 577 Main Street Hudson MA 01749 U S A TEL 800 879 6576 978 568 0500 FAX 978 568 9085 Email wireless adaptiveinstruments com Website www accutechinstruments com 157 iB 10 2005 Updated Specs and cover User Manual Differential Pressure Field Unit Models WI DP I xxx Versions 1 57 or later Important Information to the User A Changes or modifications not expressly approved by Adaptive Instruments Corp may void the user s authority to operate the equipment This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This device is for mobile and fixed use only not portable or body worn A separation distance of 20cm must be maintained at all times between the antenna and the body of the user and bodies of nearby persons This device has been designed to operate with an antenna having a maximum gain of 9 dBd Antenna having a higher gain is strictly prohibited per regulations of Industry Canada The required antenna impedance is 50 ohms To reduce potential radio interference to other users the antenna type and its gain should be so chosen that the equivalent isotropically radiated power
6. First determine the ID s you d like to give each unit Then follow the menu map shown in Figure 5 3 to configure the RF ID The factory de fault is RF ID 0 which disables the RF communication of the unit USER PROMPTED FOR PASSWORD I sete ENTER RF CHAN NEXT NEXT ENT ID r er XXX Default of 000 Figure 5 3 Menu Map to RF ID Setting Once you have selected the RF ID you wish to use for this particular Field Unit save and exit the menus and return to the Operations Sequence The Field Unit should now be successfully configured to the Base Radio To check this press ENTER while the Field Unit is in the Operations Se quence for the Read Only Sequence to be displayed You may see an RF SYNC message displayed on the Field Unit LCD This means that the Field Unit and Base Radio are attempting to synchronize communications If this is successful the RF Status will display an RF OK message If this is unsuccessful the RF Status will display a NO RF message Also notice the two small arrows on either side of the LCD if they are fluctuating up and down that indicates the Field Unit and Base Radio are successfully communicating If only one or none of the arrows are moving then RF communication is unsuccessful Rev 1 57 13 Section 6 Configuring the Sampling and Transmission Rates The Differential Pressure Field Unit is very versatile with many program mable features and can be used in numero
7. tion menu of the Field Unit via the Software For further instructions on getting to the configuration menu see Section 9 2 of the Wireless Instru mentation Manager User Manual Once you have opened the configuration menu select the Operation Mode tab at the top of the menu and select Open Channel Flow from the mode menu You should then see a menu like the one shown in Figure 8 3 Select the units that are appropriate for your application All possible units are listed below Open Channel Flow Dis play Characters BarrelPerDay BBL D GalPerDay GramPerHr mpGalPerDay mpGalPerHr mpGalPerMin mpGalPerSec 2 9 2 2 e 2 e ele elelelele D ISISislzl z z z J43 sa Nad fae ee ad ed Bd Garer ramen ALALALA QIOIO EEIE JBE O lt ALALALA a Fel Fal fa NIZIO Rev 1 57 8 3 Open Channel Flow Open Channel Flow Dis play Characters LterPerre LiterPerMin L M LiterPerSec L S Once engineering units have been selected a 22 point sensor offset curve must be enabled it is disabled upon delivery from the factory by select ing the Sensor Offset tab within the configuration menu Rev 1 57 Accutech Wireless Differential Pressure Field Unit User Manual 8 4 Level Operation Mode Sensor Offset Mode Level Level Density 0 0 Degrees API xi Full Tank Pressure Tank Height 0 0 Feet X Tank Volume foo Gallons Level Units X Figure 8 4 Level Mode NOTE Fo
8. EIRP is not more than that required for successful communication The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada limits for the general population consult Safety Code 6 obtainable from Health Canada s website www hc sc gc ca rpb FCC Certification This product is a frequency hopping RF transceiver module for the 900MHz ISM band designed to meet FCC 15 247 and is used in industrial control and moni toring applications The antenna is factory installed and MUST NOT be removed or modified by user Accutech A Division of Adaptive Instruments Corp 577 Main Street Hudson MA 01749 USA TEL 800 879 6576 978 568 0500 FAX 978 568 9085 Email wireless adaptiveinstruments com Web www accutechinstruments com Adaptive Instruments Corp 2005 Printed in the USA Rev 1 57 I Table of Contents Section 1 Introduction 1 1 1 Using This Manual 1 1 2 About the Device 2 1 3 Unpacking 2 1 4 Software Compatibility 2 Section 2 In a Hurry 3 Section 3 Installation 4 3 1 Mechanical Installation 4 3 2 Commissioning 8 Section 4 General Configuration 9 4 1 Field Unit Displayed Messages 9 4 2 Overall Configuration Menu Map 10 4 3 Setting the Field Unit Tag Name 10 4 4 Setting a User Password 11 4 5 Resetting All Field Unit Settings 11 Section 5 Configuring the RF Communications 12 5 1 RF Channel Selec
9. Field Unit Power UP and Operations ICD Sequences 6 08e 9 4 2 The Read Only Seg enCe irisse tennan aa aai nei ea eiei eeens 9 4 3 Overall Configuration Menu Map s sssssssssessssessseesseserssessessrssessessessressesse 10 44 Setting a Us r PassWord eer spc suvise sssuscrincaseevensanesinctvensnecdsa cteaaiesabceanisenneanetisnes 11 5 1 Menu Map to RF Channel Setting cogiicsscssscicscssasssacecanhcacosaasnieassdusncssnnientivmsbontes 12 5 2 Menu Map to Baud Rate Setting sscisccasdsssaesstcstarwxediorvioussadversesexuuseasvessasdusavenues 12 5 3 Menu Map to RF ID Setting eeseesesseessesssesorsseessessrssrersesorsseessessesseessessossees 13 6 1 Inc rrect Sampling Kate sisisiscacsssssicesearasdansalayccanvedsecensscacetaarpelessabanecaunasucapsasnccs 15 0 2 Correct Sampling AUS xcijnvernacsisuvisdzsuntnaaivenrsaseuevaacsebennatvueamnancetnsaveusteceaeonnas 15 6 3 Example of Abnormal Transmission Rate Setting ceeeeceesseeeteeeteeeees 16 6 4 Example of Abnormal Transmission Rate Setting eeeeceesseeeteeeeeeeees 17 6 5 Smart Rate Configuration Using Wireless Instrumentation Managet 18 6 6 Sampling and Transmission Rate Selection Using the Software 19 6 7 Normal Upper and Lower Value Selection Using the Software 0 19 7 1 Menu Map to Pressure Zero Serie scp ssnessndesas shevtiveasenncsdeusnesvaraacedvalvntaduuisnes 20 7 2 Menu Map to Offset Setting a c
10. Once engineering units have been selected a 22 point sensor offset curve can be enabled it is disabled upon delivery from the factory by selecting the Sensor Offset tab within the configuration menu Rev 1 57 8 2 Orifice Flow Operation Mode Sensor Offset Mode OriceFlow yf p Flow Density 0 0 Degrees API E Differential Pressure 0 0 Atmospheres x Flow 00 Full Scale Flow foo 8 Pounds sec Truncation Point 0 0 Pomds sec Cancel Figure 8 2 Orifice Flow Section 8 Selecting and Configuring Operation Modes In this mode the user has the option of setting up volumetric or mass flow calculations through an orifice plate if the density units are selected and entered mass flow calculations are available The user must enter a differ ential pressure value and a flow value corresponding to the pressure value Using these two points the PC will calculate the flow value that corre sponds to the full scale pressure value of the Field Unit i e FS Flow Finally the user also must enter a truncation point value This information is used to calculate flow in the units selected by the user To set the Field Unit to this operation mode you must go to the configura tion menu of the Field Unit via the Software For further instructions on getting to the configuration menu see Section 9 2 of the Wireless Instru mentation Manager User Manual Once you have opened the configuration menu select
11. Section 4 General Configuration In this section general configuration options such as password protection and selecting a user password are discussed Also covered is the setting of a Field Unit tag name resetting of all Field Unit settings and a discussion of the various messages that are displayed on the Field Unit LCD Section 5 Configuring the RF Communications This section covers the setup of the Field Unit RF Communications which allow the Field Unit to achieve communication with the Base Radio Pa rameters discussed are the Field Unit RF ID the RF channel setting and Baud Rate Section 6 Configuring the Sampling and Transmission Rates This section aids the user in selecting the amount of time between each sample of the process and the time between each transmission of this sample to the Base Radio Also discussed is the use of setting an abnormal threshold in which sampling and transmission times may change during a period when the process variable is within the abnormal region Section 7 Configuring the Process Variable This section helps the user to zero the sensor as well as discussing the setting of a measurement offset and trimming the process measurement Section 8 Selecting and Configuring Operation Modes In this section the four operation modes differential pressure orifice flow open channel flow and level of the Differential Pressure Field Unit are discussed in order to aid the user in selecting the right mo
12. played by pressing the ENTER button when the unit is in the Operations Sequence See Section 4 1 1 of this manual Rev 1 57 4 4 Setting a User Password Dual 0 10 V Input Properties 1 47 Output Switches Sampling Rates Sampling Bands Alarms General Inputs Range Sensor Offset Description Location Date Installed Comments General Monitored Equipment Field Unit Password 0000 Units Input Units Volts iv Load from File Save to File OK Cancel Figure 4 4 Setting a User Password 4 5 Resetting All Field Unit Settings Section 4 General Configuration Each Field Unit has a password that will lock out undesired users from making changes to the Field Unit Any user may still view some of the Base Radio settings by pressing the ENTER key during the Operations Sequence and viewing the Read Only Sequence The password is a four digit password The factory default is 0000 If you wish to select a different password one may be entered via the Wireless Instrumentation Manager software To do so enter the configuration menu See Section 9 2 of the Wireless Instrumentation Manager User Manual Once in the configuration menu click on the General tab to bring up the general information as shown in Figure 4 4 The Field Unit password for this device can be set by entering a four digit number in the Field Unit Password field Once a password has been en ter
13. 1 57 17 Accutech Wireless Differential Pressure Field Unit User Manual 6 5 Setting the Smart Rate Threshold General Inputs Output Switches Update Rates Normal Transmit Rate Abnormal Transmit Rate Normal Sampling Abnormal Sampling SmartRate _ Enable SmartRate on Input 1 _ Enable SmartRate on Input 2 Smart Smoothing deadband Enable Smart Smoothing Dual 0 10 V Input Properties 00001047 1 47 Range Sensor Offset 1 Sec 1 Sec 1 Sec 1 Sec The SmartRate feature causes the field unit to transmit its data immediately any time the primary value changes by the amount set The Smart Smoothing feature rejects noise and glitches by averaging samples within the deadband and ignoring the first sample outside the Sampling Bands Alarms Load from File Figure 6 5 Smart Rate Configuration Using Wireless Instrumentation Manager 18 The Smart Rate is a feature used to trigger radio transmission of the meas ured data sooner than the normal or abnormal rate specified by the user This feature is used to construct a more accurate graph of the measured process variable vs time than is possible with the fixed transmission rates while using less battery power To configure the Smart Rate Threshold follow the user menu to the SMART R menu and press the ENTER button The user is then asked to enter the amount that the process v
14. 1 below If enabled WI DP VER X XX gt TAG NO gt XXXX XX gt UNITS a b and c RF STATUS NO RF ERROR MSG RF OFF RF SYNC RF OK RF ERR SEN ERR LOW BAT F YES YES RF OK eee ones f OPERATIONS SEQUENCE o XXXX XX UNITS BE NO A NO Figure 4 1 Field Unit Power UP and Operations LCD Sequences Once the Field Unit is in the Operations Sequence a user may access the READ ONLY Sequence without a password by simply pressing the EN TER button at any time The Read Only Sequence as shown in Figure 4 2 displays extra information about the current settings of the Field Unit that are not seen during the Operations Sequence but does not allow any changes to be made to these settings t 1 P OPERATIONS SEQUENCE XXXX XX UNITS YES Le conse r ERROR MSG ENTER RF ERR eee ES NO SEN ERR i LOW BAT READONLY RF OFF moe aE NO RF AG NO a AG NO c Figure 4 2 The Read Only Sequence Rev 1 57 Accutech Wireless Differential Pressure Field Unit User Manual 4 2 Overall Configuration Menu Map The user must enter a four digit password to enter the CONFIG and DIAGNSE The FACTORY menu is for factory use only The default user password is 0000 For more information on the password see Section 4 4 4 3 Setting the
15. 106 PfPerVol 108 PfPerMass 109 PPM 139 PPB 169 Special Units SpecialUnits 253 Rev 1 57 degrees balling cubic feet per pound degrees brix percent solids per weight percent solids per volume proof per volume proof per mass parts per million parts per billion 37 ABOUT US Accutech a division of Adaptive Instruments Corp is a lead ing edge technology driven developer manufacturer and supplier of embedded microprocessor based electronics Based in Hudson Massachusetts Accutech is the most suc cessful leading independent producer of wireless instrumen tation on the market today Accutech customers include large national companies in the oil and gas chemicals pharmaceutical food and beverage primary materials processing and energy industries In addi tion to the wireless product line Accutech also offers a tradi tional wired line of temperature pressure and differential pressure instrumentation In the process control field where quality is taken for granted and new technology is announced daily we have deliberately concentrated our efforts on the development of instrumenta tion that makes business sense The result is a product range that is rugged secure and reliable and works in even the most hazardous environments We give companies the tools to reduce costs save time enhance safety improve environ mental performance and cut waste
16. 3 1 Examples of Incorrect Field Unit Positioning In this section mechanical installation instructions are discussed for the various setup capabilities of the Differential Pressure Field Unit The sub sections are as follows 3 1 1 Field Unit Positioning 3 1 2 A Simple RF Placement Procedure 3 1 3 Installation in Liquid Flow Service 3 1 4 Installation in Gas Service 3 1 5 Installation in Steam Service The Accutech Differential Pressure Field Unit is a rugged device but it provide much better performance if installed with careful consideration as noted in this manual It may be utilized in any differential pressure meas urement service so long as care is exercised to prevent exposing the sens ing elements to excess stress or temperature Installation practices have a lot to do with these service parameters and the life that you can expect from your Accutech Differential Pressure Field Unit The main considera tions for installation are covered below Give careful consideration to the environment where you will be installing your instrument Avoid installations that expose the device to excess tem perature high vibration considerable shock or exposure to dripping con densate or corrosive materials Also avoid installing the device in an un serviceable location Most often these problems can be avoided with some thought at the time of installation The practices noted below are generally recommended but they can only
17. Field Unit Tag Name 10 A complete Field Unit Menu Map is shown in Appendix C Below is an overall view of the configuration menu to aid the user in setting up the Field Unit for proper operation 1 i OPERATIONS SEQUENCE NEXT ee e eee USER PROMPTED FOR _PASSWORD UF _ NEXT NEXT NEXT NEXT NEXT Figure 4 3 Overall Configuration Menu Map Each Field Unit also has a user settable Field Unit Tag Name This Tag Name is displayed upon Field Unit power up and when the Read Only Sequence is selected The Tag Name is a 21 character string that is dis played in three separate 7 character flashes on the Field Unit LCD The user may choose from A Z 0 9 a dash and an underscore _ The underscore has a special meaning to the software inside the Field Unit For example if you have a Tag Name that is only 5 characters long then you do not want to wait for the rest of the 16 characters to be dis played on the LCD So if your Tag Name was TRAP1 you would want to enter the Tag Name like this TRAP1 n The Tag Name is entered via the Wireless Instrumentation Manager To do so when the software is in the Field Unit view See Section 8 1 of the Wireless Instrumentation Manager User Manual right click the Field Unit icon and select Rename then enter the Tag Name you wish the Field Unit to have This Tag Name will then be uploaded to the Field Unit and can be dis
18. Gr e Perform the following via the Wireless Instrumentation Manager software Select mode of operation Select appropriate engineering units Enter appropriate calculation parameters Select normal transmission rate Select normal sampling rate Select abnormal transmission rate Select abnormal sampling rate Set normal upper and lower values OO AO Oe a a If the RF OFF message is being displayed on the Field Unit LCD per form the following e Set the Set RF CHAN setting equal to the Base Radio s RF Channel If a NO RF message is being displayed on the Field Unit LCD check the following e Is the Field Unit set to the above listed configurations e Is the Base Radio on e Are the Field Unit and Base Radio set to the matching con figurations See Section 5 of Field Unit and Base Radio User Manuals e Are the Base Radio and Field Units unable to communicate due to obstructions or distance See Field Unit Manual Field Unit Placement section e Did you perform the Simple RF Placement Procedure See Field Unit Guide A Simple RF Placement Procedure sec tion Rev 1 57 Section 3 Installation 3 1 Mechanical Installation A Warning A During installation do not apply force to the in strument housing or antenna Use a proper wrench for all installations Failure to use correct installa tion procedures can cause damage to the Field Unit 3 1 1 Field Unit Positioning Figure
19. Perhaps the best test to perform before mechanically mounting the unit is a quick hand held test To perform this test you should have a good idea of where the Base Radio will be placed for more information see Section 3 of the Base Radio User Manual Put the Base Radio in this area and power it up Make sure that the Base Radio and Field Unit are on the same RF Channel and Baud Rate See Section 5 You may also have to increment the number of Field Units with which the Base Radio is communicating See the Base Radio User Manual Section 4 3 Once both the Base Radio and Field Unit are set up to be on the same net work make sure communication is established by looking at the Field Unit LCD for the RF OK message in the Read Only Sequence see Sec tion 4 1 1 After communications have been established the Field Unit should be placed in RSSI Diagnostic mode to determine the signal strength at the location of the equipment to be monitored Placing the Field Unit in this mode is explained in the following section 3 1 2 1 Field Unit RSSI Diagnostic The Received Signal Strength Indicator RSSD located in the Field Unit s diagnostic menu displays the RF signal strength in one of seven ranges The signal strength is displayed on the LCD using a combination of gt and characters Full signal strength is displayed as gt gt gt gt gt gt gt while minimum signal strength is displayed as gt ______
20. Rates tab to bring up the sampling rate information as shown in Figure 6 5 To enable the Smart Rate click the check box labeled Enable SmartRate for the correct input The user will then be allowed to enter a delta or amount changed value which will trigger a transmission Once a value has been entered click OK to save and download the con figuration changes to the Field Unit Indicates that Menu is Disabled if Wireless Instrumentation Manager is detected See Appendix A Rev 1 57 Section 6 Configuring the Sampling and Transmission Rates 6 6 Selecting Rates Thresh If you have the Wireless Instrumentation Manager software the Normal 4 z and Abnormal Sampling and Transmission menu options will not be ac olds and Deadbands via cessible via the Field Unit once the Field Unit detects that the software is the Software being used See Appendix A for more details These settings should be entered using the Wireless Instrumentation Manager software To do so Dual 0 10 V Input Properties 00001047 1 47 enter the configuration menu See Section 9 2 of the Wireless Instrumen Eo PoE IL iis Gina tation Manager User Manual Once in the configuration menu click on Output Switches Sampling ates Sampling Bands Alarms the Sampling Rates tab to bring up the sampling rate information as is ene 10sec x shown in Figure 6 6 Abnormal Transmit Rate 3Sec T E To select the Normal Transmission Rate se
21. act as a guideline and cannot cover all possible variations The final installation must be made at the discretion and approval of the user You must be the judge of the actual installation Dimensioned mechanical drawings for aid in mechanical installation are located in Section 10 Technical Specifications Correct positioning of the Field Unit will ensure the best performance of the device When planning the positioning of the Field Units there are a few parameters that must be paid attention to e Ideally the top of the Field Unit will generally point in an upward fashion The bottom of the Field Unit should NOT point directly at the Base Radio and the Field Unit LCD should point away from the Base Radio e All Field Units should maintain an approximate spacing of at least one foot apart from one another e The line of sight range between a Field Unit and Base Radio is 2000 feet at the 19 2K baud rate setting Note that this range is reduced by the amount of RF Noise present obstruc tions and the material properties of the obstruction e Only place the Field Unit in ambient operating temperatures of 40 F to 185 F 40 C to 85 C Figure 3 1 shown to the left gives examples of incorrect setups according to the previously mentioned parameters Rev 1 57 Section 3 Installation 3 1 2 A Simple RF Placement Pro Remember proper placement of the Field Unit will optimize your RF cedure communication range and capabilities
22. revised periodically Internal device software may contain portions that are not compatible with previous versions of the Wireless Instrumentation Manager software To ensure software compatibility Wireless Instrumentation Manager soft ware version 1 58 171 or later must be used If you believe you are experi encing software compatibility issues please call Accutech Technical Sup port at 978 568 0500 or email wireless adaptiveinstruments com Rev 1 57 Section 2 In a Hurry A Caution A If the Base Radio is not energized for more than 30 minutes the Field Units should also be turned off to preserve battery life Leaving the Field Units on when the Base Radio is not energized or out of range will cause the Field Units to transmit very frequently and drastically reduces their bat tery life This section summarizes what must be done in order to get the device in stalled configured and in operation quickly However it does not provide detailed or how to information to perform the tasks outlined Install the Field Unit in the desired location of operation Turn on Field Unit by pressing ENTER and NEXT buttons simultane ously and holding until unit powers up Set RF CHAN setting equal to the Base Radio s RF Channel Set BAUD RT setting equal to the Base Radio s Baud Rate Set RF ID number to be a unique value between 1 and 50 Zero the sensor Trim and Offset the measurement if appropriate N SO
23. tons per day 35 Accutech Wireless Differential Pressure Field Unit User Manual Density Units SGU 90 GramPerCuCm 91 KGPerCuMeter 92 PoundsPerGal 93 PoundsPerCuFt 94 GramsPerML 95 KGPerLiter 96 GramsPerLiter 97 PoundsPerCuIn 98 ShTonPerCuYard 99 DegTwad 100 DegBaumHeavy 102 DegBaumLight 103 DegAPI 104 MicroGMPerLiter 146 MicroGMPerCuMeter 147 specific gravity units grams per cubic centimeter kilograms per cubic meter pounds per gallon pounds per cubic foot grams per milliliter kilograms per liter grams per liter pounds per cubic inch short tons per cubic yard degrees twaddell degrees baume heavy degrees baume light degrees API micrograms per liter micrograms per cubic meter PercentConsistency 148 percent consistency Viscosity Units Centistokes 54 Centipoise 55 centistokes centipoise Angular Velocity Units DegPerSec 117 RPS 118 RPM 110 Energy Work Units NM 69 DekaTherm 89 FtLbForce 126 KWHr 128 MCal 162 MJ 164 BTU 165 Force Units Newton 68 Power Units KW 127 HP 129 MCalPerHr 140 MJPerHr 141 BTUPerHr 142 Frequency Units Hertz 38 Analytical Units Percent 57 PH 59 PerSteamQuality 150 Perc
24. transmit updates Thus if you selected the Normal Transmit Rate setting to be 10 Seconds the Normal Sampling Rate must be set to 10 Seconds or faster A complete table of these parameters is shown below Baud Rate 76 8K 19 2K Input communication range os speed of updates SE 1 Second or 5 Seconds or 20 Seconds or 8 Transmit Rates Greater Greater Greater Normal and Abnormal Equal to Transmit Equal to Transmit Equal to Transmit j peste Sampling Rates Rate or Less Rate or Less Rate or Less q h In order to properly set the Normal Sampling Rate first determine how often updates are needed from the Field Unit when the device being moni 0 1 00 2 00 Time min With a Normal tored is operating normally You have a selectable range of 1 30 seconds Sampling Rate of 30 Seconds Note however the more frequently the Field Unit wakes up to check the Figure 6 1 Incorrect Sampling Rate monitored device the faster you will use up the battery life of the Field Unit hares Figure 6 1 is an example of what happens when the Normal Sampling Rate 10 is too slow for the device being sampled Notice how the rise in the volt age level falls between two normal samples and thus goes completely dr undetected 6 Normal Sample Figure 6 2 is an example of what happens when the normal sampling rate ER is correctly set for the device that is being monitored Notice how this set ting makes it possible to sample the rise in the volt
25. a sus cs fo ndens sun evecare aca eiacgacaaiandestauesvetenoacmenness 20 7 3 Menu Map to Wri SOUS cxceccvescsecasusebaacerssnesasecese ensauedeaceess sicennsvecdencusteesanees 21 7 4 Setting a 22 Point Curve Using Wireless Instrumentation Manager 21 8 1 Differential Setting Using the Software cece ee eee eee ne eee ee eee nenees 22 8 2 OMICS OW aa gies nics Fa ctiew cass dace a EAEE TEAREN e ii 23 8 3 Open Channel Flow Mode yic0 ccsarcsukevssuedin eiicvasiitiaongerasuneuserugoaske lias 24 8 4 Level MOG sais sscsaiae vasuneess car anaE rE EE EEEE AS 26 Dimensioned Mechanical Drawing ccceccceeseeseceseceeeeeeeceescecaeceseeeeeeesseecsaeenes 30 Rev 1 57 Section 1 Introduction 1 1 USING THIS MANUAL This manual is designed to assist in installing operating and maintaining Accutech Model WI DP Differential Pressure Field Units The manual is broken into sections as follows Section 2 In a Hurry This section summarizes what must be done in order to get the device in stalled configured and in operation quickly However it does not provide detailed or how to information to perform the tasks outlined Section 3 Installation This section covers general considerations regarding correctly commis sioning the Field Unit as well as unique applications such a flow service commissioning Also covered in this section are mechanical installation considerations such as Field Unit placement
26. age level 0 4 00 2 00 The Wireless Instrumentation Manager software must be used to configure Time min With a Normal this setting An explanation of how to select the Normal Sampling Rate Sampling Rate or 19 Seconds using the Wireless Instrumentation Manager software can be found in sec Figure 6 2 Correct Sampling Rate tion 6 6 of this manual Rev 1 57 15 Accutech Wireless Differential Pressure Field Unit User Manual 6 3 Selecting the Abnormal Transmission Rate If you do not need more or less frequent samples and updates from a Field Unit for a given applica tion then there is no need to complete this section Simply set the Normal Transmission and Sam pling Rates to the desired speeds and make sure that the Normal Upper and Lower Values are configured to Disabled 16 The Abnormal Transmission Rate is identical to the Normal Transmis sion Rate with one exception The Abnormal Transmission Rate only ap plies while the Field Unit is in an Abnormal condition see Setting Normal Upper and Lower Values section 6 6 This allows you to increase or de crease the frequency of information you receive depending on the operat ing conditions of the device being monitored In order to properly set the Abnormal Transmission Rate you must first determine how often the Field Unit needs to update its data about the de vice being monitored while in an Abnormal condition You have a select able range of 1 10 15 20 40
27. ariable must change since the last data sample to trigger a new transmission of the process variable If the process variable changes by more than the entered Smart Rate amount within the normal or abnormal sampling rate whichever is ac tive then the process variable is transmitted immediately The normal abnormal transmit clock is then reset upon this transmission If no Smart Rate amount exceeding change takes place in the next normal abnormal sample then the next transmission will be the normal abnormal transmit rate period The amount entered is in the same units as were selected by the user to be displayed on the Field Unit If the measured process variable does not change by more than the entered Smart Rate mount within the time be tween the sampling rate whichever is active then the process variable is transmitted on the next transmit rate If changes in the process variable which exceed the Smart Rate Amount continue to occur the process variable is transmitted repeatedly If you have the Wireless Instrumentation Manager software this menu option will not be accessible via the Field Unit once the Field Unit detects that the software is being used See Appendix A for more details The Smart Rate should be enabled using the Wireless Instrumentation Manager software To do so enter the configuration menu See Section 9 2 of the Wireless Instrumentation Manager User Manual Once in the configura tion menu click on the Sampling
28. asuring a value above below sensor dependent bound values For example the Analog Input device will report over range if measurement is above 105 range of the Analog Input sensor If the measurement goes above 150 full range the unit will go into Sensor Fault mode In over range mode the measurement is continued to be displayed with the OVERRNG message to re mind the user that the specified range of the sensor and the calibrated range of the device is being exceeded Fatal error messages will replace the normal cycling message sequence and will flash A fatal message indicates the Field Unit is no longer operat ing normally and requires repair These are RF ERR fatal error within RF communications SEN ERR fatal error within the sensor electronics SYS ERR fatal error within the microprocessor system RF CAL fatal error within the RF calibration system 32 Rev 1 57 Appendix C Field Unit Menu Map NEXT ENTER ENTER inaaaeemaer ONLY READ NEXT NEXT ia NEXT Note If a menu is left unchanged for 2 minutes then the Field Unit will return to the Operations Sequence NEXT NEXT a p OPERATIONS SEQUENCE ver CONFIG ext DINGNSE Nexr of FACTORY Next CERTZ aga ENTER Factory passwords will be hard coded User password will be 0000 from factory ENTER ERECHAN enter gt RECHT RF OFF is Default Haei ENTER amp NEXT AT ANY TIME Laa NEXT Default
29. ation Manager software the Normal General Inputs Range SensorOtfset and Normal Upper and Lower Value menu options will not be accessible eis E i via the Field Unit once the Field Unit detects that the software is being lbe Input 1 Limi used See Appendix A for more details These settings should be entered Value 40 Volts using the Wireless Instrumentation Manager software To do so enter the Time Deadband 33 Seconds configuration menu See Section 9 2 of the Wireless Instrumentation Man ager User Manual Once in the configuration menu click on the Sampling Use Input 2 Limit Bands tab to bring up the sampling band information as shown in Figure 6 7 Tres To set a limit to the normal condition enable the limit by clicking on the Z Use Input 1 Limit Use Input X Limit check box Then enter the value and time deadband gae U Mee for the limit Time Deadband 2 5 Seconds L Use Input 2 Limit This tab allows the user to set the Sampling Bands of the field unit The unit uses Normal sampling transmission rates when the primary values are within the bands When the value is outside of the bands it is considered Abnormal and Abnormal rates are used Figure 6 7 Normal Upper and Lower Value Selection Using the Software Rev 1 57 19 Section 7 Configuring the Process Variable This section helps the user in the selection of engineering units as well as discussing the setting of a measurement offset a
30. being displayed the value is 7 JeENTER YES7INO penter gt XXXX XX saved If ENTER is pressed while NO is being displayed the value is NOT saved The sensor should be at ZERO when YES is selected ENTER Figure 7 1 Menu Map to Pressure Zero Setting 7 2 Setting a Measurement For various applications the user may wish to display an offset value rather than the actual value To enter an offset navigate to the OFFSET Offset command as shown in Figure 7 2 Then enter the offset to be added or subtracted from the actual measured value OPERATIONS SEQUENCE r Nexto CONFIG ee USER PROMPTED FOR i S PASSWORD UF votre ENTER gt _INPUT 1 enter XXXX XX NEXT Coextr Figure 7 2 Menu Map to Offset Setting 20 Rev 1 57 7 3 Trimming the Measurement If entering a two point trim via the NEXT and ENTER buttons Point 2 MUST be greater than Point 1 in order for the trim to work properly 7 4 Entering a 22 Point Curve Section 7 Configuring the Measurement The Field Unit interface allows the user to set a two point correction curve for the sensor This process is often called trimming because the dis played value is trimmed up or down to reflect the actual value being ap plied To set a trim point take the Field Unit offline and navigate to the TRIM menu as shown in Figure 7 3 and select the input t
31. ces require no wires permits or licenses and they are easily set up and installed right out of the box You can use this device for long term monitoring in remote locations for short term data gathering on process conditions or to quickly test the eco nomic viability of a new installation The purpose of this manual is to help you install and maintain your Ac cutech Differential Pressure Field Unit BEFORE setting up and installing the Field Unit please setup and configure the Base Radio Remove the Packing List and check off the actual equipment received If you have any questions on your shipment please call your Accutech Rep resentative Upon receipt of shipment inspect the container for any signs of damage in transit Especially take note of any evidence of rough han dling Report any apparent damage immediately to the shipping agent Please note that sometimes units are assembled with accessories when shipped Inspect the shipment carefully if you think that something is missing This is rare as we take considerable care to pack units for ship ment but it does sometimes happen Please give us a call and we may be able to resolve this matter quickly over the phone Please note that the carrier will not honor any claims for damage unless all shipping materials are saved for their examination If damage is found during examining and removal of the contents save the packing material and the carton Software for Accutech is
32. configure the anne The RF Channel can be thought of as a set of walkie talkies If both walkie talkies are on chan nel one they can communicate If a walkie talkie E Se is on channel one and the other is on channel two I __ PASSWORD they cannot communicate Likewise if two E CRF CHAN enter gt RF CHITE Default of RF OFF walkie talkies are on channel one and two other i walkie talkies are on channel two the walkie Figure 5 1 Menu Map to RF Channel Setting talkies on channel one cannot hear what is being transmitted bythe wallie talkies on channel two Once you are in the RF Channel menu you can increment it by pressing the next button When selecting this value do not choose an RF Channel that is currently being used by other Accutech Wireless Systems as this can cause communication problems 5 2 Baud Rate Selection The RF Baud Rate refers to the speed at which the Base Radio and Field Units communicate There are three selectable settings with the fastest update times and ranges listed below e 4 8K Rate of 4 8 Kbaud Update every 20 seconds Range of 3000ft Line of Sight e 19 2K Rate of 19 2 Kbaud Update every 5 seconds Range of 2000ft to 2500ft Line of Sight e 76 8K Rate of 76 8 Kbaud Update every 1 second Range of 500ft to 750ft Line of Sight A faster RF Baud Rate allows the user to transmit more information in a given period of time but it will also limit the Field Unit s rang
33. d a 22 point sensor offset curve must be enabled it is disabled upon delivery from the factory by select ing the Sensor Offset tab within the configuration menu Rev 1 57 Section 9 Maintaining the Field Unit The Differential Pressure Field Unit is extremely easy to maintain in that it requires no periodic calibration or system checks The Field Unit has a self diagnostic which is constantly checking the internal system If any errors are found they are reported via the LCD Base Radio or the software A simple yearly visual inspection for the following is all that is needed e Is the Field Unit still securely fastened to the equipment be ing monitored e Are there any visible corrosions cracks or residue build ups on the unit e Has anything about the application changed from the original intended use 9 1 Changing the Battery The battery will need to be changed within one month of seeing a LOW BAT message on the Field Unit This is a simple process 1 Make sure you have the correct replacement battery TADIRAN Lithium Inorganic Battery non rechargeable Size C 3 6Volts TL2200 S 2 Power down the Field Unit by pressing and holding both the NEXT and ENTER buttons for a few moments 3 Remove the 4 set screws on the sides of the Field Unit housing with a standard screw driver 4 Remove the housing and locate the battery Warning When remov ing the housing do not twist or bend the green fle
34. de for his or her application and properly configuring the Field Unit for that specific appli cation Section 9 Maintaining the Field Unit This section explains how the Field Unit should be cared for once it has been placed into service Changing the battery is also covered in this sec tion Section 10 Technical Specifications This section explains the technical specifications that are associated with this device such as power characteristics accuracy and operating charac teristics Rev 1 57 Accutech Wireless Differential Pressure Field Unit User Manual 1 2 ABOUT THE DEVICE 1 3 UNPACKING 1 4 SOFTWARE COMPATABILITY The Accutech Differential Pressure Field Unit is a reliable Radio Fre quency RF transceiver coupled with a differential pressure sensor that can be used to monitor a variety of processes in hazardous and hard to reach areas The time and expense of running wires often makes it diffi cult to measure parameters that have an economic impact on your plant operation but the Differential Pressure Field Unit allows you to quickly and accurately monitor those devices at fraction of the cost which gives you bigger and faster returns on your instrumentation investments The Field Units communicate in a secure digital protocol over a band of frequencies from 902MHz to 928MHz This data communication tech nique has been the backbone of the military s secure communications pro tocols for many years These devi
35. e If you If you change the baud rate of a Field Unit you need more distance out of your Field Units or are encountering difficulties must also change the baud rate of the Base Radio by frequently losing communications then select a slower baud rate and all other Field Units that are communicating with that Base Radio to match Follow the Base Radio menu map shown in Figure 5 2 to configure the RF Baud Rate The factory default is the 19 2K Baud Rate BAUD RT k 48K j ENTER NEXT 192K NEXT Default of 19 2K NEXT Figure 5 2 Menu Map to Baud Rate Setting 12 Rev 1 57 Section 5 Configuring RF Communications 5 3 RF Identification Selection Each Field Unit is identified by the Base Radio and software according to the RF Identification ID given to that particular unit Two Field Units can NOT have the same ID and be on the same RF Channel if you do not know the RF Channel see section 5 1 If the Field Unit is in the Opera tions Sequence pressing the ENTER button displays the Read Only Se quence on the LCD which displays the ID of that unit like this ID 3 All Field Units in your system are set to a default ID number upon ship ment For example if you have ordered a Base Radio and three Field Units the Field Units will be configured to ID s 0 0 and 0 You must set these units to three different IDs between and 50 The Field Units in this example could be set to RF IDs 1 2 and 3
36. e The RF module in each field unit is individually tested and calibrated over the full tem perature range to ensure reliable wireless operation Self Diagnostics Low battery alarm indicates the need to replace the battery approximately one month warning e Contains extensive self checking software and hardware that continuously monitors the operation Any sensor or device parameter out of spec is identified and reported Materials of Construction e Type 316 stainless steel base e Type 316 stainless steel diaphragm Hastelloy C is available upon special request e Type 316 stainless steel flange and bolts Hastelloy C is available upon special request e DC 200 silicone sensor filling fluid Florolube available upon special request e Weight approximately 6 2 Ibs 2 8 kgs e GE Lexan cover V 0 rating and UV stable Operating Vibration and Shock Characteristics e Certified per IEC EN00068 2 6 vibration and 2 27 shock Random Vibration Characteristics e Certified to withstand 6 g s 15 minutes per axis from 9 500 Hz Electromagnetic Compatibility CE Compliance e Operates within specification in fields from 80 to 1 000 MHz with field strengths to 30 V m Meets EN 50082 1 general immunity standard and EN 55011 compatibility emis sions standard Industrial Certification Pending e Rated for industrial use 40 F to 185 F 40 C to 85 C e Pending FM NEMA 4X weather proof housing e Pending FM rated intrinsically safe fo
37. e set to default configura 30 minutes the Field Units should also be turned n off to preserve battery life Leaving the Field tions at the factory if any configuration differences are present the Base Units on when the Base Radio is not energized or Radio will not be able to communicate with the Field Units The subsec out of range will cause the Field Units to transmit tions are as follows very frequently and drastically reduces their bat 5 1 RF Channel Selection tery life 5 2 RF Baud Rate Selection 5 3 RF Identification Selection 5 1 RF Channel Selection All Base Radios and Field Units can be set to one of 16 different commu nication channels The only Field Units recognized by a particular Base Radio are the units that are on the same RF Channel as that Base Radio This allows the user to decide which Field Units communicate with each Base Radio The RF Channel defines a set of frequencies on Each Field Unit comes from the factory set to the RF OFF channel This which communication takes place between the means the Field Unit will not communicate to any Base Radio To set the Base Radio and the Field Unit Each RF Channel Field Unit for communication first determine the channel that you wish to has a different set of frequencies thus allowing use Then follow the Field Unit menu map shown below in Figure 5 1 to the user to have multiple different wireless net fi the RF Ch l works co existing throughout the same facility
38. e the Base Radio description for analog and digital output options Operating Temperature Range e 40 F to 220 F 40 C to 104 C process connection temperature steady state e 40 F to 185 F 40 C to 85 C electronics e 4 F to 158 F 20 C to 70 C display full visibility e 40 F to 185 F 40 C to 85 C display with reduced visibility e Humidity Limits 0 to 100 Sampling and Transmission Characteristics The Differential Pressure Field Unit samples differential pressure or flow at regular inter vals The data may then be transmitted to the Base Radio for centralized monitoring and data acquisition The user specifies how frequently the process is monitored and how of ten data is transmitted e Differential Pressure Flow user designates low rate and high rate conditions e Sampling rate user selectable from 1 to 60 seconds low rate and from 1 to 30 seconds high rate e Transmission rate user selectable from second to 60 seconds low and high rate Power Characteristics e Self contained power e C Size 3 6 V lithium battery e Up to five year battery life depends on sample rate and RF update rate field replaceable 28 Rev 1 57 Section 10 RF Characteristics e 902 MHz 928 MHz Frequency Hopping Spread Spectrum FHSS FCC certified ISM license free band e Up to 3000 range from Base Radio with clear line of sight 500 to 1000 range with ob structions
39. ed click OK to save and download the password to the Field Unit Please note that the password only protects the Field Unit from unauthor ized configuration via the NEXT and ENTER buttons The Wireless In strumentation Manager requires a user login password to gain access to all configuration parameters However user accounts are available and can be set with different access levels and restrictions For more information on user accounts see the Wireless Instrumentation Manager User Manual Section 8 4 To reset all Field Unit settings to their default state the user must navigate to the DEFAULT menu option in the CONFIG menu via the keypad Once at the default menu option pressing the ENTER button will display RESET on the LCD which asks if the user is sure he or she wants to reset the device to its default configuration The user will then be prompted with NO on the LCD Pressing the ENTER button while NO is being displayed will NOT reset the device Pressing the NEXT button will display YES on the LCD If the user presses the ENTER button while YES is being displayed the device will be reset Rev 1 57 11 Section 5 Configuring the RF Communications A Caution A In order for the Field Unit and the Base Radio to communicate they must r be on the same RF Channel and must be transmitting at the same Baud lt the Base Radio is not energized for miore than Rate While all Field Units and Base Radios ar
40. entPlato 160 PerLowExpLevel 161 degrees per second revolutions per second revolutions per minute af newton meter deka therm foot pound force kilo watt hour mega calorie mega joule british thermal unit newton kilo watt horsepower mega calorie per hour mega joule per hour british thermal unit per hour hertz percent JE pH AS percent steam quality percent plato percent lower explosion level Capacitance Units PF 153 EMF Units MillivVolts 36 Volts 58 Current Units MA 39 36 Rev 1 57 picofarads millivolts volts milliamperes Resistance Units Ohms 3 f KOhms 163 Angle Units Deg 143 Rad 144 Conductance Units MicroSiemens 56 fe MilliSiemensPerCM 66 MicroSiemensPerCM 67 ohms kilo ohms degrees radians micro siemens milli siemens per centimeter micro siemens per centimeter Volume per Volume Units VolumePercent 149 volume percent MilliLitersPerLiter 154 milli liters per liter MicroLitersPerLiter 155 micro liters per liter Volume per Mass Units DegBalling 107 CuFtPerLb 152 Concentration Units DegBrix 101 PerSolidsPerWt 105 PerSolidsPerVol
41. how the first abnormal sample is taken a few seconds after the Nor configured to Disabled mal Upper Value set point is exceeded The next sample will then follow this sample by 5 seconds or whatever the Abnormal Sampling Rate is set to These samples will continue at this interval until the process value drops below the Normal Upper Value set point Once the process value drops below this set point the sampling rate will return to the Normal Sampling Rate Also the Abnormal Sampling must be equal to or faster than the Abnormal Transmission Rate The user should also note that the transmission time depends on the sam ple rate and when the process variable is sampled If the Normal Sam pling Rate is 30 seconds then the process variable may be above the Nor mal Upper Value for up to 29 seconds before abnormal condition is de tected This means that the transmission could be as late as 29 seconds after the process variable exceeded the Normal Upper Value The Wireless Instrumentation Manager software must be used to config ure this setting An explanation of how to select the Abnormal Sampling Rate using the Wireless Instrumentation Manager software can be found in section 6 6 of this manual Input Volts 10 Abnormal Condition Abnormal Sample Normal Upper Value Normal Sampling Rate of 15 Sec Abnormal Sampling Rate of 5 Sec Normal Upper Value of 2 5 Figure 6 4 Example of Abnormal Sampling Rate Setting Rev
42. iodically re zeroed The procedure for re zeroing assumes that the sensor in service and that the line shut off valves are open that the and manifold valves are open and that the manifold bypass valve is closed To then re zero the transmitter use the following procedure 1 Open the manifold bypass valve fully 2 Close the Downstream manifold block valve 3 Check the zero output and adjust if necessary If you suspect gas or air in the impulse lines these should be purged 4 Open the Downstream manifold block valve 5 Close the manifold bypass valve The sensor is now in service Rev 1 57 Section 4 General Configuration 4 1 Field Unit Displayed Messages During configuration and testing keep Field Units at least one foot apart and away from the Base Radio to ensure good communications 4 1 1 The Read Only Sequence This section discusses the generalities for configuring the Field Unit via the NEXT and ENTER buttons The subsections are as follows 4 1 Field Unit Displayed Messages 4 1 1 The Read Only Sequence 4 2 The Overall Configuration Menu Map 4 3 Setting a Field Unit Tag Name 4 4 Setting a User Password 4 5 Resetting All Field Unit Settings To turn the Field Unit on press both the NEXT and ENTER buttons and hold them for a few seconds Upon power up the Field Unit will display the Power Up Sequence and then go into the Operations Sequence These Sequences are shown in Figure 4
43. king place If you wish to discontinue use of the software and want these menus re instated you must contact your Accutech Sales Representative Rev 1 57 31 Appendix B Field Unit Displayed Message Definitions This section covers the various messages displayed on the Field Unit LCD that occur during operation of the device Operations Sequence e RF Link Status gt RF OK Field Unit and Base Radio are communicating properly gt RF SYNC Field Unit and Base Radio are attempting to synchronize communications RF OFF Field Unit s RF Channel is set to RF OFF gt NORF Field Unit and Base Radio have no communications e Differential Pressure Input Level gt XX XX Currently measured differential input level Error Messages If an error is detected with the operation of the Field Unit a message will be displayed on the Field Unit LCD a corresponding message may also appear on the Base Radio LCD There are few types of error messages warning and fatal Warning mes sages are displayed as part of the normal cycling message sequence These are e LOW BAT battery should be replaced as soon as possible e NORF can not detect Base Radio e SFAULT there is an open sensor or excitation wire detected Also if a sensor value goes above below logical limits The unit will display 9999 99 for measurement sensor fault mode but will con tinue sampling and recover if the problem desists e OVERRNG the device is me
44. lect one of the time periods maere IE 7 from the drop box Next select an Abnormal Transmission Rate in the same manner Note that the Normal and Abnormal Transmission Rate can be the same SmartRate The SmartRate feature causes the field unit to transmit its data immediately any time the primary value changes by the amount set l Enable SmartRate on Input 1 Once the transmission rates have been selected the user should select the desired sampling rates Note that the sampling rate must be equal to or Enable Smena on Input 2 faster than the associated transmit rate For example in Figure 6 10 the Normal Transmission Rate is set to 10 seconds and the Normal Sampling Rate is also set to 10 seconds This is a valid configuration Another ex Smart Smoothing The Smat Smoothing eae ej noise and diches by averaging ample in Figure 6 6 is the Abnormal Transmission Rate being set to 3 sec ithin t id d i ing the first tside tk E MP E T Ce onds and the Abnormal Sampling Rate being set to 1 second Enable Smart Smoothing If the user incorrectly enters the Transmission and Sampling Rates a mes sage will be displayed explaining this to the user The user will not be allowed to leave this screen before the setting is corrected Figure 6 6 Sample and Transmission Rate Selection Using the Software Duat 0 10 V Input Properties 00001047 1 47 If you have the Wireless Instrument
45. ll allow commissioning and zeroing without over pressurizing In the event that the sensor is subject to significant over pressure steps must to taken to re establish the neutral instrument zero If the sensor is or has been over pressurized on the side any zero drift caused by the over pressure will be negligible after a fairly short period of time about three hours If the sensor has suspected to have been over pressurized on the side over pressure equal to the static line pressure of the process should be applied to the side and the zero allowed to neutralize for several hours 1 Check overall installation to ascertain that all fittings plugs vents and bolts are secure leak free and ready for service 2 All manifold and line shutoff valves if installed should be in the closed position 3 Open manifold bypass valve and both line shutoff valves if installed This will put a zero differential pressure across the sensor 4 Slowly crack open the Upstream manifold block valve until the sen sor is at line pressure Then fully open this Upstream manifold block valve 5 Crack open the and side vent plugs until all air is purged out of the transmitter and the manifold Close the vents tightly 6 Check ZERO output and adjust if necessary 7 Open the Downstream manifold bock valve fully 8 Close the manifold bypass valve The sensor is now in service Differential Pressure Sensors in flow service need to be per
46. meters per day ImpGalPerHr 30 imperial gallons per hour ImpGalPerDay 31 imperial gallons per day NormCuMeterPerHr 121 normal cubic meter per hour MKS System NormLiterPerHr 122 normal liter per hour MKS System StdCuFtPerMin 123 standard cubic feet per minute US System CuFeetPerHour 130 cubic feet per hour CuMeterPerMin 131 cubic meters per minute BarrelPerSec 132 barrels per second 1 Barrel 42 US gallons wd BarrelPerMin 133 barrels per minute BarrelPerHr 134 barrels per hour BarrelPerDay 135 barrels per day GalPerHr 136 gallons per hour ImpGalPerSec 137 imperial gallons per hour LiterPerHr 138 liters per hour 34 Rev 1 57 Velocity Units FtPerSec MetersPerSec InPerSec InPerMin FtPerMin MetersPerHr Volume Units Gallons Liters ImpGallons CuMeters Barrels Bushels CuYard CuFeet CuInch BarrelsLiquid af NormalCuMeter NormalLiter StdCuFeet HectoLiter Length Units Feet Meters Inches CM MM FtInSixteenths Time Units Min Sec Hr Day Mass Units Gram KG MetricTon Pound ShortTon LongTon Ounce Mass Flow Unit GramPerSec GramPerMin GramPerHr KGPersec KGPerMin KGPerHr KGPerDay MetTonPerMin MetTonPerHr MetTonPerDay PoundsPerSec PoundsPerMin PoundsPerHr PoundsPerDay ShTonPerMin ShTonPerHr ShTonPerDay LongTonPerHr LongTonPerDay
47. nd free from a build up of sludge 1 Tap into the side of the steam line 2 Run vertical impulse lines to allow the steam to condense and cool Mount the transmitter below the line taps but above the drain valves 3 Fill the impulse lines with water when commissioning the device Rev 1 57 7 Accutech Wireless Differential Pressure Field Unit User Manual 3 2 Commissioning 3 2 1 Liquid Service Commission ing Using a 3 Valve Manifold 3 2 1 Liquid Service Zeroing Us ing a 3 Valve Manifold In this section commissioning instructions are discussed for the various setup capabilities of the Differential Pressure Field Unit The subsections are as follows 3 2 1 Liquid Service Commissioning Using a 3 Valve Manifold 3 2 2 Liquid Service Zeroing Using a 3 Valve Manifold Be careful when commissioning your transmitter Transient pressure shock waves that can overpressure the sensor causing zero shifts These are most always generated on the upstream side of the instrument By design mini mum zero shift is generated when the transmitter is over pressured on the side Sensors are protected for overpressure on either side to the full pressure rating of the process flanges However stresses induced during overpressure will cause a temporary zero shift It is therefore recom mended that during commissioning and zeroing every attempt should be made to prevent over pressuring the sensor on either side The procedures outlined below wi
48. nd trimming the process measurement The subsections are as follows 7 1 Zeroing the Sensor 7 2 Setting a Measurement Offset 7 3 Trimming the Measurement 7 4 Entering a 22 Point Curve 7 1 Zeroing the Sensor You will need to check the position zero reading on the transmitter The Differential Pressure Field Unit is a sensitive device Its elevation and its orientation in the field may be different from the orientation in the factory where it received its last configuration To compensate for position changes you may need to perform a sensor position adjustment once the unit is installed For this step power the unit and apply zero pressure Be sure that the unit is installed in its final location or that it is oriented exactly as it will be in its final installation If you have a differential pressure device you will also need to go through a series of operations to fill the impulse lines to the device See Section 3 2 Commissioning If you have a transmitter pressure reading of zero that is the transmit ter reading is within the specified accuracy of 0 07 of the full scale value when zero pressure is applied there is no need to zero the sensor If your zero reading is outside of this value you will need to execute the position zero adjustment by following the menu map shown in Figure 7 1 below USER PROMPTED FOR _ PASSWORD UF i ENTER If ENTER is pressed while YES is
49. nit is cycling through the normal messages causes the Field Unit to enter the setup mode The NEXT button is then used to step through menu options and the ENTER button is used to enter a sub menu of what is displayed on the LCD at that time If no button is pressed within a 30 second period the unit goes back to the normal display mode If you enter a sub menu that requires a numerical input such as 001 the left most 0 will be blinking This indicates that pressing the NEXT button will increment this value with each press from 0 to 9 and back to 0 again Pressing the ENTER button will move to the next available value If the last value is blinking pressing ENTER will save the entered values and return from the sub menu If both the NEXT and ENTER buttons are depressed at once a message on the LCD displaying OFF will appear If both buttons are released upon appearance of this message the user will be returned to the scrolling main screen If both buttons are not released for the duration of the OFF message the unit will power down and turn off Note If the unit is turned off while entering values in a sub menu those values will NOT be saved As shown throughout the document this mark indicates that these menu options will automatically turn off if the Wireless Instrumentation Man ager Software is used All changes to these Field Unit menu options should be made through software instead This is to prevent simultaneous changes from ta
50. o be trimmed Then select the point you wish to enter After selecting the point you will be asked if the Field Unit has been taken offline Press the ENTER button if this is true Next you will be asked to enter a value This should be a known reference value Once you have entered the applied value you will be prompted to apply the reference value to the sensor and then confirm the value is being applied via a yes no prompt Ehr CPzEROT COFFSET TAK penter sC INPUT T FENTER cim Figure 7 3 Menu Map to Trim Setting If you have the Wireless Instrumentation Manager software a 22 point sensor offset curve may be entered for the Field Unit To do so enter the configuration menu See Section 9 2 of the Wireless Instrumentation Man ager User Manual Once in the configuration menu click on the Sensor Offset tab to bring up the offset information as shown in Figure 7 4 Dual 0 10 V Input Properties 00001047 1 47 Output Switches SamplingRates SamplingBands Alarms General Inputs Range Sensor Offset Disable Sensor Offset Curve Enable Sensor Offset Curve Curve Parameters Indicated Actual Indicated Actual Value Value Value Value Load from File Save to File Cancel Figure 7 4 Setting a 22 Point Curve Using Wireless Instrumentation Manager Rev 1 57 21 Section 8 Selecting and Configuring Operation Modes 8 1 Differential Pre
51. o for your application To select a better spot for the Base Radio see section 3 1 1 of the Base Radio User Manual Rev 1 57 3 1 3 Installation in Liquid Flow Service Figure 3 3 Installation in Liquid Flow Application 3 1 4 Installation in Gas Service The piping between the process and the transmit ter must accurately convey the process pressure to the transmitter sensor In transferring the pres sure there are several sources of error These are leaks pressure loss due to friction particularly if purging is used in the application gas that is trapped in a liquid line liquid that is trapped in a gas line temperature induced density variations between the legs other density variations between the measurement legs The actual installation must be made to minimize these errors 3 1 5 Installation in Steam Service Figure 3 4 Installation in a Steam Application Section 3 Installation In liquid service you want all of the impulse lines to be completely full of liquid It is generally best practice to place the process taps in the side of the liquid process line This minimizes the entrance of gas bubbles which tend to form at the top of the process line It also tends to minimize the entrance of sludge and particulates that tend to accumulate in the bottom of the line 1 Tap into the side of the process line 2 Mount the transmitter beside or below the taps 3 Position the vents level with or ab
52. of 19 2K ENTER a Default of 000 NEXT ENTER ENTER If ENTER is pressed while YES is being displayed the value is saved If ENTER is pressed while NO is being displayed the value is NOT saved The sensor should be at ZERO when YES is selected ENTER gt EXXXXXXI ENTER ee The user must apply the POINT 1 amp POINT 2 to the sensor then select YES To save the point If ENTER is pressed while YES is being displayed the value is saved ENTER Sen mri If ENTER is pressed while NO is being displayed the value is NOT saved RESET vrs ENO ower VEST This resets all the trim points to the i i i NEXT factory settings including the ZERO Point EENT Not the OFFSET ere eee ENTER NEXT 33 Rev 1 57 Appendix D Modbus Register Definitions Temperature Units DegC 32 Degrees Celcius DegF 33 Degrees Fahrenheit DegR 34 Degrees Rankine DegK 35 Kelvin Pressure Units InH20At 68F i inches of water at 68 degF InHgAtOC 2 inches of mercury at 0 degC FtH2O0At 68F 3 feet of water at 68 degF MMH20At 68F 4 millimeters of water at 68 degF MMHgAtO0C 5 millimeters of mercury at 0 degF PSI 6 pounds per square inch BAR 7 bars MilliBAR 8 millibars GMPerSqcm 9 grams per square centimeter KGPerSqcm 10 kilograms per square centimeter
53. ove the point where the im pulse lines connect to the transmitter This will give the best way to vent all of the air out of the impulse lines and flanges Here you want the impulse lines and manifold to be full of gas Placing the taps in the top of the line generally prevents liquid from entering the transmitter Mounting the transmitter above the process piping allows any liquid or condensate that does form in the impulse lines to drain back into the process piping 1 Tap into the top of the line 2 Mount the transmitter above the taps Steam service is slightly more complex Here you want to tap into the side of the steam lines to keep from collecting sludge and particulates Process steam temperatures almost always exceed the working tempera tures for the differential pressure transmitter To surmount this problem allow the impulse lines to condense and cool the steam by exposing the impulse lines to the general ambient temperature Make the vertical sec tion of the impulse lines long enough to make sure the steam condenses in the impulse lines A good rule of thumb is that each foot of condensate line reduces the temperature by 20 F Example Saturated steam at 15 psig is approximately 250 F To lower the temperature at the transmitter to 200 F take 50 F divided by 20 F per foot 2 5 feet of condensate pip ing Drain valves on the vertical portion of the condensate lines are gener ally a good idea to help keep the system clean a
54. ow ranges for the different RF Baud Rate settings are listed below e 4 8K Baud between 1 and 4 arrows e 19 2K Baud between 2 and 5 arrows e 76 8K Baud between 3 and 6 arrows Once you have verified that you are receiving a signal you should check to make sure the Field Unit is communicating properly with the Base Ra dio To do so exit the RSSI by pressing ENTER and then navigate to the EXIT of the diagnostic menu and return to the Operations Sequence shown in Figure 4 1 on page 9 Once in the Operations Sequence you will notice small arrows on the rightmost and leftmost regions of the LCD These arrows indicate the sending and receiving of messages between the Base Radio and the Field Unit If both arrows are moving up and down and you do not see a NO RF message then the position you have selected will be suitable for mounting the device If only one or neither of the arrows is moving and you see a NO RF mes sage then you do not have satisfactory RF communication with the Base Radio If your application allows move the Field Unit to a different posi tion and check again for communications If your application only allows you to mount at this particular point you may want to try a slower baud rate setting for an increased range see note One final solution is to reposition the Base Radio However this may af fect communications with previously installed Field Units and if so may require the use of a second Base Radi
55. ptions accord ingly A complete table of these parameters is shown in the table in the following section In order to properly set the Normal Transmission Rate you must first de termine how often you need updates from the Field Unit when the device being monitored is operating within what you consider to be normal oper ating conditions for that process variable You have a selectable range of 1 5 10 15 20 40 seconds and 1 minute The factory default is 10 sec onds The Wireless Instrumentation Manager software must be used to configure this setting An explanation of how to select the Normal Transmission Rate using the Wireless Instrumentation Manager software can be found in Section 6 7 of this manual 14 Rev 1 57 Section 6 Configuring the Sampling and Transmission Rates 6 2 Selecting the Normal As previously mentioned the Field Unit is in sleep mode to save power during the operations sequence This mode turns off most of the electron Sampling Rate ics on the unit with the exception of the LCD in order to preserve battery life The Field Unit will then wake up for every Normal Sampling Pe riod and take the necessary current voltage readings Notice that the minimum speed of the Normal Sampling Rate is dependent on the Normal Transmission Rate setting you selected earlier see section 6 1 The Sampling Rates cannot be set to a slower time interval than the time interval at which the Field Unit is required to
56. r Class I II III Division 1 Groups A B C D E F amp G Class I I II Division 2 Groups A B C D F amp G Intrinsic Safety Entity Parameters Pending e Maximum operating temperature 85 C e Temperature Class T4 Configuration The Wireless Instrumentation Manager is required for initial set up and ongoing configu ration Options include a 22 point custom curve capability The Wireless Instrumentation Manager can also be used for monitoring of the process information The user can set thresholds to represent alarm or abnormal conditions A local display provides e Integrated LCD display with membrane switch buttons e Display provides pressure reading and error messages if applicable e Configure RF parameters locally using membrane switch buttons Mounting Bracket The optional mounting bracket DPB 2S can be ordered separately Rev 1 57 29 Accutech Wireless Differential Pressure Field Unit User Manual T 20 UNF 4 PLA S PLAC 174 NPT FEMALE PLAS 4 Dimensioned Mechanical Drawing 30 Rev 1 57 SQUARE Appendix A Navigating User Menus Pressing either the NEXT or ENTER buttons located on the front of the Field Unit or Base Radio just below the Liquid Crystal Display LCD screen is all that is needed to navigate the respective menus Pressing both of these buttons for one second will turn the unit on Pressing the NEXT button at any time while the Field U
57. r Level a 22 point curve table must be filled out for correct operation 26 Section 8 Selecting and Configuring Operation Modes In this mode the user has the option of entering the density of material or the full tank pressure Also the user must enter tank height and tank vol ume Finally the user must select level units which can be in units of height volume or mass The entered information is used to make level calculations in the units selected by the user For non uniform tanks the user must also fill out the 22 point curve table indicating the relationship between height and volume To set the Field Unit to this operation mode you must go to the configura tion menu of the Field Unit via the Software For further instructions on getting to the configuration menu see Section 9 2 of the Wireless Instru mentation Manager User Manual Once you have opened the configuration menu select the Operation Mode tab at the top of the menu and select Level from the mode menu You should then see a menu like the one shown in Figure 8 4 Dis play Characters Feet Gallons Gram mpGallons nches Kilograms iquid Barrels ITERS NG TON METERS M TON iters ongTon Metric Ton N CU M N LITER BUSHELS CU INCH CU YARD GALLONS KGRAMS BBL LIQ OUNCE POUNDS SHT TON HectoLiter Millimeters NormalCuMeter NormalLiter Percent Height Percent Volume Short Ton Standard Cu Ft Once engineering units have been selecte
58. seconds and 1 minute Figure 6 3 is an ex ample of how the device switches transmission rates from Normal Trans mission Rate to Abnormal Transmission Rate Note how the first abnor mal transmission is sent immediately when the Normal Upper Value set point is exceeded The next transmission will then follow this immediate transmission by 10 seconds or whatever the Abnormal Transmission Rate is set to The transmissions will continue at this interval until the process value drops below the Normal Upper Value set point Once the process value drops below this set point another transmission is made to the Base Radio The transmissions will then be made at the Nor mal Transmission Rate of one minute or whatever the Normal Transmis sion Rate is set to from the time of the last abnormal transmission The user should also note that the transmission time depends on the sam pling rate and when the process variable is sampled If the Normal Sam pling Rate is 30 seconds then the process variable may be above the Nor mal Upper Value for up to 29 seconds before abnormal condition is de tected This means that the transmission could be as late as 29 seconds after the process variable exceeded the Normal Upper Value The Wireless Instrumentation Manager software must be used to config ure this setting An explanation of how to select the Abnormal Transmis sion Rate using the Wireless Instrumentation Manager software can be found in section 6 6 of
59. ssure Operation Mode Sensor Offset Mode Differential Pressure x pic Pressure Atmospheres v Units Cancel Figure 8 1 Differential Pressure Setting Using the Software 22 In this section the four operation modes differential pressure orifice flow open channel flow and level are discussed in order to aid the user in se lecting the right mode for his or her application and properly configuring the Field Unit for that specific application The subsections are as follows 8 1 Differential Pressure 8 2 Orifice Flow 8 3 Open Channel Flow 8 4 Level This mode simply calculates and displays the differential pressure value from the Differential Pressure sensor To set the Field Unit to this opera tion mode you must go to the configuration menu of the Field Unit via the Software For further instructions on getting to the configuration menu see Section 9 2 of the Wireless Instrumentation Manager User Manual Once you have opened the configuration menu select the Operation Mode tab at the top of the menu You should then see a menu like the one shown in Figure 8 1 To select the Differential Pressure mode select Differential Pressure in the Mode drop down box This will display another drop down box which will allow the selection of differential pressure engineering units You should select the units that are appropriate for your application All possible units are listed below Bar Pe E a
60. the Operation Mode tab at the top of the menu and select Orifice Flow from the mode menu You should then see a menu like the one shown in Figure 8 2 Select the units that are appropriate for your application All possible units are listed below Once engineering units have been selected a 22 point sensor offset curve can be enabled it is disabled upon delivery from the factory by selecting the Sensor Offset tab within the configuration menu Rev 1 57 23 Accutech Wireless Differential Pressure Field Unit User Manual 8 3 Open Channel Flow Operation Mode Sensor Offset Mode Open Channel Flow x Flow Density joo DegeesaP z Differential Pressure 0 0 Cm H20 4C z Flow 00 a Full Scale Flow joo Kilograms sec Truncation Point 00 Kilograms sec Cancel Figure 8 3 Open Channel Flow Mode NOTE For Open Channel Flow a 22 point curve table must be filled out for correct operation 24 This mode lets the user setup flow calculations for open channel flow measurements for weirs In order to make this calculation the user must enter the density of the material a differential pressure value and a match ing flow value In addition a truncation point value must be entered Fi nally the user must fill out the 22 point curve table indicating the rela tionship between column height and flow rate To set the Field Unit to this operation mode you must go to the configura
61. this manual Input Volts 10 Abnormal Condition Abnormal Transmission Normal Transmission Normal Upper Normal Transmit Rate of 1 Min Abnormal Transmit Rate of 10 Sec Normal Upper Value of 2 5 Figure 6 3 Example of Abnormal Transmission Rate Setting Rev 1 57 Section 6 Configuring the Sampling and Transmission Rates 6 4 Selecting the Abnormal The Abnormal Sampling Rate is identical to the Normal Sampling Rate with one exception The Abnormal Sampling Rate only applies while the Sampling Rate Field Unit is in an Abnormal condition see Setting Normal Upper and Lower Values section 6 6 This allows you to increase or decrease the frequency of information you receive depending on the operating condi tions of the device being monitored In order to properly set the Abnormal Sampling Rate you must first deter mine how often the Field Unit needs to update its data while in an Abnor mal condition You have a selectable range of 1 10 15 20 40 seconds If you do not need more or less frequent samples and updates from a Field Unit for a given applica tion then there is no need to complete this section Simply set the Normal Transmission and Sam and 1 minute Figure 6 4 is an example of how the device switches sam pling Rates to the desired speeds and make sure pling methods from Normal Sampling Rates to Abnormal Sampling Rates that the Normal Upper and Lower Values are i Note
62. tion 12 5 2 RF Baud Rate Selection 12 5 3 RF Identification Selection 13 Section 6 Configuring the Sampling and Transmission Rates__14 6 1 Selecting the Normal Transmission Rate 14 6 2 Selecting the Normal Sampling Rate 15 6 3 Selecting the Abnormal Transmission Rate 16 6 4 Selecting the Abnormal Sampling Rate 17 6 5 Setting the Smart Rate Threshold 18 6 6 Selecting Rates Thresholds and Deadbands via the Software 19 Section 7 Configuring the Process Variable 20 7 1 Zeroing the Sensor 20 7 2 Setting a Measurement Offset 20 7 3 Trimming the Measurement 21 7 4 Entering a 22 Point Curve 21 Section 8 Selecting and Configuring Operation Modes 22 8 1 Differential Pressure 22 8 2 Orifice Flow 23 8 3 Open Channel Flow 24 8 4 Level 26 Section 9 Maintaining the Field Unit 27 Section 10 Technical Specifications 28 Dimensioned Mechanical Drawing 30 Appendix A Navigating the Menus 31 Appendix B Displayed Message Definitions 32 Appendix C Field Unit Menu Map 33 Appendix D Modbus Register Definitions 34 Rev 1 57 M IV Table of Figures 3 1 Example of Incorrect Field Unit Positioning ce eeceseeeseeneeeeeeeeeeeeeeneeeeees 4 3 2 M nu Map t RSSI MOG scires onetiese iira si E REES Tie 5 3 3 Installation in Liquid Flow Service sseseesseesseesseseeeseeseesessseesersersseesseserssresse 7 3 4 Installation in Steam Application cc ccecceeceeesceesceceeeceeeeeeeeeeseecsaecneeeeeeensaes 7 4 1
63. us different applications Be cause no two applications are the same some configuration is required for each unit This section will walk you through the initial configuration of these sample and transmit settings The subsections are as follows 6 1 Selecting the Normal Transmission Rate 6 2 Selecting the Normal Sampling Rate 6 3 Selecting the Abnormal Transmission Rate 6 4 Selecting the Abnormal Sampling Rate 6 5 Setting the Smart Rate Threshold 6 6 Selecting Rates Thresholds and Deadbands via the Software 4 The Field Unit is in a sleep mode to save power during the operations 6 1 Selecting the Normal Sper Sc sequence This mode tums off most of the electronics on the unit with the Transmission Rate exception of the LCD in order to preserve battery life The Field Unit will then wake up every Normal Sampling Period and take the necessary current voltage readings The Field Unit will then transmit these readings to the Base Radio on an interval determined by the Normal Transmission Rate Notice that the fastest update rate of the Normal Transmission Rate is de pendent on the baud rate setting you selected earlier see Section 5 2 The transmission rates cannot update data faster than their communication speed allows Thus if you selected the 19 2K Baud Rate setting your fast est transmission rate will be 5 seconds and no faster The Field Unit auto matically determines these settings and adjusts the menu o
64. x cable Doing so may cause the tether to improperly seat next to the antenna and greatly reduce operable RF distances Do not allow the housing to flop around while hanging by the tether 5 Remove the old battery and replace it with the new battery positive end first Note that the positive end of the battery clip is the end with the red wire 6 Plug the green wire flex cable back in if unplugged and replace the housing Then screw the housing back on and power up the unit by pressing either of the buttons 7 Properly dispose of used battery Rev 1 57 27 Accutech Wireless Differential Pressure Field Unit User Manual Technical Specifications Differential Pressure Input Characteristics Upper URL and Maximum Static Pressure Lower Range Limit WI DP I 100IN 100 in H20 2000 PSI WI DP I 300IN 300 in H20 2000 PSI WI DP I 25PSI 25PSI 2000 PSI WI DP I 100PSI 100 25 PSI 2000 PSI WI DP I 300PSI 300 25 PSI 2000 PSI Accuracy e 0 2 of full scale reading including combined effects of temperature hysteresis and repeatability Stability e Less than 0 25 of sensor URL per year at reference temperature Static Pressure Effect e 1 0 of URL per 1000 PSI typical Return from Overpressure e 0 04 Sensitivity in Reverse Pressure Direction e Within 1 0 of forward direction Mounting and Positioning Effect e 1 5 In H 0 correctable with position zero Output Resolution e Se

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