KPSI Digital Series User's Manual
Contents
1. Changing the UTI isisisi EE REEERE ERE E re tend seine ie AEEA EE NEE Raai 16 SEWN USEN N S pant re eee eae none E Ee EAE a AEE Tae E a AET ee eee eee et ee E ee 17 Configuring the Averaging Time s i3 s2sccecce teeing dias tlaw des deestady oka ede Ris haw eke peda oR aagaaGNa sa acelegeebdiesaie 18 Alphabetic Command MSEC Cs csaccsusetd ccxseiase incre tenuietaesaoes tenunbaneniaune boebaetakeguaaebnemboiusenisa Reeurelulenimes 19 calibration eee eee ee oe re eee ree eee eee ee ee ee ee 27 Troubleshooting and Maintenance eaeeete irre eee enna eee ce ene weer nie eee ere eee ee eee 28 Troubleshooting srir E E EEE A EEE EA EEE EEEE EA EERE EA EE 28 MEE eE E E E E E E E S 29 General Maintenance Tips cccccceeeeeeeeeeceeeeee eee eeeeencaeeeeee eee eeaaaaaaeeeeeeeeeeeteaaaaaeeeeeeeennnnee qaaeeeeeeeenenna 29 Clogged nose piece or dirty diaphragm sissazcsncccencsetsvavseteantndeadeedierestincebiewnaedecidaedeeneedes touhdeweens iis 29 Cleaning your IeNSONGG ls coxcs5acctt tins Socios Sede este es Seep TAS 29 Warranty and Product Return Procedures 2 c csceecccd ciasccesteasneratatneetteenndicaeenatiiaecaied maiteatin Staieedeannes 31 IU AV eM tte cca pete ae tse eis dwt teas ee casa cena aces eee eek eae a a eentes 31 Merchandise return procedures ascii cisescacnactienearenidadeonts teienettacietseteeerwideingcectrbieewncecemerties nendemaaebnceee 31 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 2362. Scale Factor Measurement user slope user offset and field calibration offset Start Concurrent Standards Lab Scale Factors Measurement calibration slope and calibration offset aC aDO aC1 aDO aC2 aDO aC3 aDO aC4 aDO attt02 02 is number values in DO resp apu p is pressure value u is signed units indicator Units set by XUP command If XUM 1 command executed then temperature value and units code tu also appended attt0 1 01 is number values in DO resp ap a p is pressure value psi attt02 02 is number values in DO resp atu t is signed temperature u is units 0 Celsius and 1 Fahrenheit Use XUT command to set units a00103 03 is number values in DO resp asoc s is signed user slope o is signed user offset psi c is signed field cal offset psi a00102 02 is number values in DO resp aso s is signed cal slope o is signed cal offset psi Measurement Specialties Inc 1000 Lucas Way Hampton VA 23666 USA www meas spec com 20 of 32 1 757 766 1500 1 800 745 8008 measurement SPECIALTIES J KPSI Digital Series User s Manual i C5 Start aC5 attt02 Concurrent High Accuracy 02 is number values in DO resp Temperature aDO atu t is s
3. accuracy specifications The offset can be checked by bringing the transducer to the atmosphere and taking a zero reading If the sensor has been subjected to more than its maximum pressure the offset of the unit should be checked as described above General Maintenance Tips clogged nose piece or dirty diaphragm Either of these conditions could result in erroneous readings from your transducer WARNING NEVER attempt to clean your transducer s nose piece or diaphragm with any object This will dent the sensor diaphragm and cause permanent damage to the transducer Your transducer may be cleaned in accordance with the procedures listed in step 4 below cleaning your transducer materials required Materials required 3 Plastic basins 8 12 inches 200 300mm across 4 6 inches 100 150mm deep e Supply of clean lint free cleaning rags e Rubber gloves e Mild liquid dishwashing detergent such as Dawn noted for its grease dissolving cleaning capabilities Enough clean water to fill two of the basins e One 32 oz bottle of The Works Tub and Shower Cleaner a mild detergent available through Wal Mart K Mart Target and Ace Hardware stores or at http www theworkscleans com index html Preparation Prior to cleaning your pressure transducer ensure that all procedures have been followed in the proper cleaning of the cable and transducer to remove any biologically and chemically hazardous materials The vent filt
4. for a period of two 2 years commencing from the date of shipment to the original purchaser to be clear of title free from defects in material and workmanship and in conformity with product specifications Any transducer that is less than 2 years old see DOM which does not meet the product s specifications and exhibits no physical damage to the housing sensor or cable cuts will be replaced under warranty Units 2 3 years old Units that fall within this age group and exhibit no obvious physical damage to the housing sensor or cable cuts are replaced at a discounted list price Units greater than 3 years old Units that fall within this age group are not repaired or replaced under warranty merchandise return procedures Contact the KPSI Applications Engineer 1 800 745 8008 ext 4398 if your transducer is not operating properly The engineer will work with you to troubleshoot the problem and if necessary forward you to the Customer Service Representative to obtain a Returned Merchandise Authorization RMA The staff is available for troubleshooting at 757 766 1500 or toll free at 1 800 745 8008 during standard working hours Eastern Time Be prepared to supply the following information when requesting the RMA Transducer part number Serial number Complete description of problems symptoms Bill To and Ship To address Original purchase order number or sales order number e Customer contact and telephone number em
5. the measurement or process the command and nn is the number of data values that may be fetched by the Get Data D0 command when data is ready This atttnn newer response format in SDI Version 1 2 and later does not generate the second Service Request response and can return a larger number of values nn limited to 99 This format is generated by a newer concurrent measurement commands see C v commands below If you issued the Change Sensor Address command or the Identify command described in the previous sections you already have some experience with using commands There are other commands available to make measurements set the type of output units for the measurements perform special scaling of the measurements do field calibration and the like The following sections describe the commands by function Making a Measurement There are two classes of measurement commands which will be referred to as Start Non Concurrent Measurement M v commands and Start Concurrent Measurement C v commands In the first class the data recorder issues the measurement command and then waits for the sensor to complete the measurement before continuing the data collection cycle Only one sensor can be accessed at a time and a maximum of nine parameters can be returned With Version 1 2 of the specification concurrent measurements are permitted With a concurrent measurement the data recorder can request the sens
6. 00 Lucas Way Hampton VA 23666 USA www meas spec com 23 of 32 1 757 766 1500 1 800 745 8008 KPSI Digital Series User s Manual measurement SPECIALTIES RO R1 R9 XE XS Start Continuous Measurements unimplemented Initiate Verify Sequence Set Field Calibration Offset Recalculate Field Calibration Offset aRO aR1 ARO aV aDO aXEou o is signed offset u is units O feet of water 1 psi aDO Example aXE 0 05 0 set offset to 0 05 feet aXS or aXSdu d and u are optional signed values When omitted sensor is assumed to be vented to atmosphere When supplied d is desired reading for sensor and in units indicated by u The sensor will make a measurement and recalculate the field offset to ensure reading matches values entered aDO command tis temperature value 2 u is 0 Celsius or 1 Fahrenheit Use XUT command to set units a Note address return indicates unimplemented command a0013 a Service Request response aefg e is executed 1 YES 0 NO P is number unexpected interrupts g is interrupt code Example a 1 0 0 is normal a0011 a Service Request response Service Request resp returned in 001 seconds 1 is number values in DO resp ao o signed offset value psi attt1 a Service Request response Service Request res
7. 66 USA 1 of 32 1 800 745 8008 measurement SPECIALTIES cone KPSI Digital Series User s Manual i Introduction thank you for your purchase The KPSI digital line of water level transducers offers accuracy versatility and extensive features You ve made a commitment to quality In return we promise a high level of service and support to help you get the most from your investment in leading edge environmental monitoring instrumentation about kpsi transducers September 2010 Measurement Specialties Inc NASDAQ MEAS a global designer and manufacturer of sensors and sensor based systems announced the acquisition of Pressure Systems Inc PSI Measurement Specialties will continue to develop manufacture and service highly accurate level measuring instruments for environmental applications We are committed to consistently meeting and exceeding our customers expectations website and e mail You can visit our website at www Meas Spec com for information on our latest product releases application notes product specifications and certifications and IS control installation drawings We also welcome your questions and comments and strive to reply promptly Please e mail us at WL sales meas spec com technical support While this manual provides extensive guidance for everything from setup through maintenance we understand that there s nothing like getting an expert on the phone to provide quick answers and he
8. Make sure address is proper case and commands are upper case Multiple sensors set to the same address check address settings of all SDI sensors Remove all other sensors from the recorder and Garbled data add them one at a time Communication is defined to be 1200 E 1 Command issued to a wild card address or Remove all other sensors from the recorder and try again Wrong units selected use the M command and look at the units field Verify that the desired units are selected Erroneous offset entered display the field calibration offset using Erroneous the M3 command and verify it Re calibrate the offset data Erroneous user slope and offset entered display the user slope and offset using the M3 command and verify Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 28 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Maintenance Typical maintenance for the sensor consists of checking the wiring to make sure it is not corroded or frayed checking the atmospheric vent tube to make sure it is intact and leak free and checking or setting the field calibration offset Check to ensure the 810 Super dry vent filter dessicant is mostly blue If it has turned completely pink it needs to be replaced Maintenance should be performed at least every 6 months in order to insure that the sensor meets the
9. able One variation requests that the data be returned with a 16 bit Cyclic Redundancy Check CRC appended It adds a C to command such as MC MC1 CC or CC1 The number of measurements returned in response is the same as the measurements returned for a non CRC command but with a CRC appendage following them An example of such a command follows Where a is the address character M is a basic command to make a l AMG measurement and C is the added command letter requesting a CRC appendage The sensor might respond with Acknowledging it is at address a and indicating that after 5 seconds three 3 measurements will be ready to read with D0 command When an M command measurement is complete the sensor responds with an extra Service Request response Where a is the address character Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 13 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual ad As in all of the other non CRC M and C commands a D0 command must eventually be issued to get the data from the sensor In its response three data measurements and a CRC appendage are returned as follows a 3 144 2 718 1 414lpz where Ipz is the three character CRC code appendage other non concurrent measurements The SDI standard allows for several other
10. ail address or fax number The above information including the RMA number must be on the customer s shipping documents that accompany the equipment to be repaired We also request that the outside of the shipping container be labeled with the RMA number to assist in tracking the repairs All equipment should be sent to the following address ATTN KPSI TRANSDUCER REPAIR DEPARTMENT 7 digit RMA number Measurement Specialties 1000 Lucas Way Hampton VA 23666 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 31 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual NOTE Please do not return equipment without obtaining an RMA from Customer Service Prior to returning to Measurement Specialties the transducer and cable must be cleaned per instructions provided on the cleaning certificate supplied when the transducer was delivered The certificate can also be found on www meas spec com under the Quality amp Compliance tab The completed certificate must accompany the transducer when shipped to Measurement Specialties If the transducer has been used in media other than potable water customer service must be notified at the same time an RMA number is requested Measurement Specialties reserves the right to reject any shipment deemed to be unsanitary or environmentally unsafe to handle If these guidelines are not met the
11. asurement commands can return the pressure in several different units The selection of the units is made using the XUP command Where n is one of the selections from the following table and d is the aXUPnd signed data display scaling number of digits to the right of the decimal point appropriate to the new units The conversion of feet of water uses the factor 2 3073 ft per ft of water psi s Pounds per square inch default conversion factor 1 The conversion factor is 0 703265 m per psi The conversion factor is 703 265 mm per psi igerian The value has units that depend on the factor entered using the XUU command For example the following command to sensor 0 noo OXUP 0 2 will specify the output to be in the default units feet of water with a resolution of 2 decimal places The second parameter 2 in the example is optional If omitted the scaling is not changed Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 16 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i setting user units If you want the sensor to read out in units other than feet of water psi kPa centimeters of water meters of water or millimeters of water you will need to use the XUP command to set the units to 9 user units When user units are selected the software will use the equation Outpu
12. cable NOT be shortened The cable attached to your transducer is specifically engineered for submersible applications The outer jacket provides long term reliability under most conditions The cable should be handled carefully however as the jacket may be subject to cutting should it be raked over extremely sharp edges To guard against water incursion should an inadvertent cut occur we have incorporated an exclusive water block feature immediately beneath the jacket This feature makes the cable self sealing in all but the most extreme cases The cable is fully shielded with the shield connected to the metal housing at the transducer end and terminated in a blue insulated wire at the termination end The shield should always be terminated to a good earth ground unless the transducer is installed in an area where electrolysis corrosion is known to be a serious problem Surge lightning protection is offered as an option for your transducer This is achieved through the use of two 2 separate protectors One is located in the transducer body case The other protector is located at the surface and grounded via a DIN rail or ground wire Whether lightning protection is employed or not the cable shield is left exposed as mentioned previously so that the shield may be attached to an earth ground sdi 12 wiring Only three wires are needed to use the SDI 12 interface A fourth wire cable shield bare wire is added for user co
13. ch as C1 C2 etc The sensor supports the following optional concurrent measurements commands aC Measure psi using factory calibration Does not apply user scaling field calibration or offsets Returns 1 value and the units are fixed to psi aco Measure temperature Celsius or Fahrenheit This returns two values the temperature and the units The units will be 0 for Celsius and 1 for Fahrenheit ac3 _ Measure user scale factors user slope user offset field calibration offset Use this if you want to view user entered values that can affect the value returned aca Measure calibration lab slope and offset Use this if you want to view the calibration lab values that can affect the value returned temperature For the KPSI 380 Series this command requests the high accuracy nickel RTD temperature This command requests concurrent battery voltage This command combines CO and C2 for both pressure and temperature Remember to issue the DO command after the measurement is complete after estimated time for completion expires in order to retrieve the data kal This command requests a concurrent high accuracy printed circuit board PCB aC5 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 15 of 32 1 800 745 8008 measurement SPECIALTIES o KPSI Digital Series User s Manual i Changing the Units As noted above all Start Me
14. ddress can be set to a different address 9 for example by the command 5A9 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 8 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual ad Verifying the Address and Operation The tables below are sample commands and responses for the KPSI500 Other models have the same response for their respective model The sensor will respond with an identifying message when it receives the Identify command I The format of the command is all Where a is the address for the sensor The sensor will reply with Where a is SDI 12 address 13 is SDI protocol version read 1 3 a13 KPSI 500 hhh ssssss vvv KPSI is Brand Name 500 is KPSI Model Number hhh is Hardware revision level ssssss is Sensor serial number up to 8 char vvv is Software version If you do not get a reply check the address setting for the sensor and make sure you use the proper address Command Functional Overview The commands to set up and operate the sensor are those defined by the SDI 12 specifications Version 1 0 Version 1 1 Version 1 2 and Version 1 3 plus extended commands Note ALL SENSOR COMMANDS ARE UPPER CASE All commands start with a single character address and end in an exclamation point The address is a single character with values 0 t
15. e this required following relationship between two commands and two responses To avoid unnecessary repetition of frequently used parameter descriptions in the table entries each occurrence of a simple a item always represents the address of the sensor Also ttt represents a common parameter of a main response time in seconds until data will be ready to read with a following DO command All responses end with a non printable lt CR gt lt LF gt character pair which is not shown in the table Command Function Syntax Sensor Response a Acknowledge a a Active Get Unknown 2 a Address New in Version 1 2 of SDI Note Sensor must be only sensor 12 spec on SDI 12 bus when this command given Otherwise a communications collision occurs when multiple sensors respond Ab Set Sensor aAb b Address b is new address b is new address Example 5A9 sets previous address 5 to new address 9 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 19 of 32 1 800 745 8008 KPSI Digital Series User s Manual measurement SPECIALTIES Cc or co C1 C2 C3 c4 Start Concurrent Pressure Measurement after which you must send the Get Data command Start Concurrent Factory Pressure Measurement pressure in psi the factory calibrated value Start Concurrent Temperature Measurement Start Concurrent
16. er or bellows must be properly attached The cable should be coiled to ensure ease of handling and it must be protected against the possibility of accidental abrasion and or penetration of the cable jacket by sharp objects A lead length of 1 to 1 1 2 feet 0 3 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 29 of 32 1 800 745 8008 measurement SPECIALTIES o KPSI Digital Series User s Manual i 0 45m of cable from the transducer should be allowed to facilitate handling during cleaning The protective covering or similar protective device that is shipped with each transducer should be attached to the transducer at all times It should only be removed prior to installation or cleaning Your work surface needs to be clean and free of clutter and large enough to accommodate all materials required in addition to the transducer Rubber gloves should be worn when working with The Works cleaner MSDS available from the manufacturer Wearing your rubber gloves fill one of the bowls with fresh water one with a mild detergent mixed with water and the last with 16 ounces 0 45 kg or more of The Works Holding the cable 6 inches from the transducer immerse the unit in the bowl containing the mild detergent and stir for 20 30 seconds stirring gently and rubbing the exterior casing of the transducer to remove stubborn and built up dirt and grime Remove and thoroug
17. et for the desired user units aud u is units selected d is number of digits to right of decimal point Measurement Specialties Inc 1000 Lucas Way Hampton VA 23666 USA www meas spec com 25 of 32 1 757 766 1500 1 800 745 8008 measurement SPECIALTIES J KPSI Digital Series User s Manual i XUT Set Temperature aXUTu a0011 Units u 0 Celsius a Service Request response u 1 Fahrenheit Service Request resp returned in 001 seconds 1 is number values in DO resp aDO au Example aXUT 1 u is units selected Set units Fahrenheit XUU Set User Units aXUUso a0012 s is signed user slope a Service Request response o is signed user offset User output psi user Service Request resp returned in slope user offset 001 seconds 2 is number values in DO resp aDO aso Example s is user slope o is user offset aXUU 27 63 0 NOTE A slope of 0 is invalid 27 63 inches per psi NOTE Be sure units of pressure XUP are set to user units 9 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 26 of 32 1 800 745 8008 measurement SPECIALTIES o KPSI Digital Series User s Manual i Calibration The sensors undergo a rigorous screening and testing at the factory before they are shipped to ensure that they meet their accuracy spec
18. f the diaphragm will damage the sensor and void the warranty Most users either suspend the transducer in a perforated 1 inch or 2 inch PVC instrumentation free well or attach the transducer using our optional 12 inch MNPT to a rigid conduit Some applications using KPSI 500 Series one inch diameter transducers can use our optional mounting bracket PN 49 06 00PC to clamp the transducer to a fixed object i e wall ladder or step Alternatively because our cable has a 200 pound pull strength the transducer may be suspended without any protective still well mounting clamp or supporting cables However users often use our cable hanger This sensor device slides onto the cable from the bare wire end The cable hanger may be positioned anywhere on the cable by pushing the ends together Once positioned the cable hanger contracts to provide a snug grip HANGER CABLE CABLE HANGER Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 6 of 32 1 800 745 8008 measurement SPECIALTIES ee KPSI Digital Series User s Manual i Operation Your transducer was shipped from the factory preset to address 0 zero and with the pressure units set to those requested in your order However if modifications are required for your application you should familiarize yourself with the steps and commands needed to alter the setup of the transducer To issue commands to t
19. f water with non zero field calibration offset 15 units are mm of water with non zero field calibration offset 19 user units with non zero field calibration offset psi field calibration offset user slope user offset set by XE or XS set by XUU set by XUU If the unit has had its calibration modified at a standards lab other than at Measurement Specialties then the value returned for u will have one hundred 100 added to it In other words if the XC command has been utilized to set the calibration scale factor slope to other than 1 or the calibration offset factor to other than 0 then 100 will be added to the unit s indicator Starting a Concurrent Measurement C v command The command to tell the sensor to start a concurrent measurement is Where a is the address character and C v is a Start Concurrent Measurement command An optional digit v identifies command variations In reply the sensor will respond with Acknowledges it is from sensor with address a that ttt seconds are required before the measurement is completed and nn values will appear in final data atttnn stream acquired Note the 2 digit nn returned allows for a larger number of data items to be returned in the eventual data response though not utilized by model 500 sensor When the measurement is complete the sensor does NOT issue the second response known as a Service Request response as d
20. he sensor via SDI 12 you will need to connect it to a data recorder that is capable of issuing standard and extended SDI 12 commands NOTE As the KPSI 380 Series is a high accuracy TEMPERATURE transducer it does not currently support any pressure measurement or configuration commands Nomenclature All commands have three components the sensor address the command body and the command termination The sensor address is a single character and is the first character of acommand In the examples that follow it is usually the number 0 the default address as shipped from the factory The command body and the responses are shown as a combination of upper and lower case letters The upper case letters are the fixed portions of the command the lower case letters are the variables or values In the specific examples you will see that the lower case letters are replaced with actual numbers All commands are shown with an exclamation point as the command terminator Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 7 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Setting the Address If you are using the sensor connected to common wiring with other SDI 12 sensors you may need to change the default sensor address Otherwise skip this section A unique address assigned to each sensor is an absolute requirement for multi
21. hly rinse in the bowl containing the fresh water Rinse and wipe dry Holding the body of the transducer with one hand so that you are looking at the retaining screen protecting the sensor carefully remove the sensor nose piece by simply unscrewing it from the sensor body Do not touch the sensor diaphragm with your finger or any other object Also do not try to dry the inside portion of the transducer as you risk damaging the pressure sensor Place the transducer in the bowl containing The Works solution and gently stir and move the transducer back and forth to thoroughly clean out the sensor portion of the unit Again do not touch the sensor diaphragm with your finger or any other object in an attempt to clean it as you risk damaging the pressure sensor Do this for approximately 15 20 seconds Rinse in the bowl containing clean water and wipe dry the external casing only Place the nose piece in the same solution for 15 20 seconds working thoroughly to clean it out Rinse and wipe dry Holding the transducer in a vertical position so that you can see the face of the pressure sensor screw the protective nose piece back into place Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 30 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Warranty and Product Return Procedures warranty KPSI products are warranted
22. id an M command To request the data you must enter the Get Data command only after the first response s estimated time for completion ttt has expired Where a is the address character and D0 is the command to retrieve measured data Note the number zero follows D not the letter O As in all of the other non CRC M and C commands a D0 command must eventually be issued to get the data from the sensor In its response three data measurements and a CRC appendage are returned as follows a 3 14 2 718 1 414lpz Where lpz is the three character CRC code appendage Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 12 of 32 1 800 745 8008 measurement SPECIALTIES KPSI Digital Series User s Manual Depending on the variation of the command the sensor will reply with one of these response formats Where a is the address v is a data value and u is an optional units indicator Both v and u have the format of a polarity sign or followed by up to seven digits including a decimal point Format returned depends on the command variation measurement command variations To enhance the error detection capability in SDI 12 data collection systems variations of the Start Non Concurrent Measurement commands M M1 M9 and Start Concurrent Measurement commands C C1 C9 are avail
23. ifications over temperature Any drift in the zero of the unit can be easily checked by exposing the unit to atmosphere and performing a measurement Any drift can be nulled out via the XS command For optimum accuracy the offset drift should be nulled out at least every 6 months The thermal calibration will remain accurate for the life of the transducer The KPSI 380 Series uses the standards lab calibration slope and calibration offset coefficients during the engineering unit conversion These coefficients can be viewed using the aM4 or aC4 commands and can be adjusted during transducer recalibration if desired Contact the factory for details Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 27 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual Troubleshooting and Maintenance troubleshooting The following checklist will help in troubleshooting problems PROBLEM POSSIBLE CAUSE Faulty wiring check all wiring and terminations No power check fuse in the data recorder and power at sensor Wrong address requested make sure the data recorder is set up to No data request data at the proper address Wrong address set in sensor use the identify command to make sure the sensor is responding to the proper address Command or address is wrong case all SDI 12 commands are capital letters
24. igned temperature u is units 0 Celsius 1 Fahrenheit Use XUT command to set units C6 Start aC6 a00201 Concurrent Battery Voltage 01 is number values in DO resp Measurement aDO av v is signed battery voltage C7 Start aC7 attt04 Concurrent Pressure and 04 is number values in DO resp Temperature Measurement aDO aputu p is pressure value 1 u is units index Units set by XUP command tis ttemperature value 2 4 u is 0 Celsius or 1 Fahrenheit Use XUT command to set units DO Get Data aDO av or apu avu or aputu or avv or avvv NOTE p is pressure value This command is only tis temperature value issued after a Start v is other non specific value Measurement various u is units indicator see pressure M v or C v command units tables for DO in Section 5 5 It should not be issued until measurement time Example 0 10 23 0 returned in response has expired or extra Service If previous measurement command Request response has was an M or C above example been received after a Start response would be the avu form Non Concurrent and would indicate that the water Measurement various level of sensor 0 is at 10 23 feet M v command is issued NOTE If address is returned alone Example ODO with no data and unit values this Send Get Data command indicated that there is no data to sensor O available Either a Sta
25. junction box users run their own cable to the required instrumentation Polyurethane is used for most applications while ETFE is recommended for highly corrosive environments A new armored cable option is now available for the most rugged of conditions With this option polyurethane jacketed cable is protected by galvanized steel interlock armor with a blue PVC outer jacket This robustly designed cable option should be considered for installation on submersible transducers located in rugged environments harsh weather conditions or for animal control The transducers are intended for applications with requirements that include battery powered operation with minimal current drain low system cost and use of a single recorder with multiple sensors attached Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 3 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i The vented cable termination end is prepared at the factory to eliminate future moisture migration down its length It may be noticed where the lead wires emerge from under the jacket that potting material plus a shrink tube boot have been added Every effort should be made to leave this feature intact Should the cable be longer than is needed for your installation it is recommended that the excess length be accommodated in a service loop and that the potted end of the
26. lp address challenges for your particular application If you have questions concerning any of our products call 757 766 1500 or 1 800 745 8008 Monday through Friday between 7 30 a m and 5 30 p m Eastern Standard Time ordering products and accessories For your convenience orders may be placed on line by visiting our e commerce website www LevelandPressure com You can also contact our Customer Service department at 1 800 745 8008 or contact your local Measurement Specialties representative Expedited shipping is available Manual Content Disclaimer This user s manual was prepared for the current firmware and software releases at the time of the manual publication While this document is believed to be thoroughly reliable Measurement Specialties assumes no liability for inaccuracies Addenda will be distributed as deemed necessary by Measurement Specialties All computer programs supplied with your products are written and tested on available systems at the factory Measurement Specialties assumes no liability for other computers languages or operating systems Measurement Specialties reserves the right to change the specifications without notice Any questions regarding firmware upgrades may be addressed to Applications Engineering Application software and transducer firmware revisions as well as manual addenda may be obtained from www meas spec com Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hamp
27. measurement SPECIALTIES gt o o KPSI Digital Series User s Manual i Table of Contents Introductio eses A E A E ET 1 Product Introd ctioMis enin E EEE EEE EE AEE 3 ASMP AEN Wining ese aa a aE cee tena E EEE aE ea cena E EEEE 3 Hstalation a eee eee meee ee eee er ee ne eee eee 6 OS BOI snena na E RE AE E EA E tener Ra A EEE E EAER A E R EA 7 Nomenclature leet ee ete ar a oe E ee er ree aa EE Ea EEEE EEEE O EEEE 7 Setting the Address inscriere erein a a Eae EAE AEAEE S Ea SEa 8 Verifying the Address and Operation scsccsiscesssietcrrerieeeniaieenen wnamiaee ramones Ieeeluiwn tide 9 Command Functional Overview ceeeeccecccee cree eeeeeeee ee eee teen eee aaa eee eee ee eee aaaeeeeeeeeeennnee caaeeeeeeeetena 9 Making a Measurement ieee eee on ene ee ee ne ee eee ee ree ee eee ee eee eee 10 Starting a non concurrent measurement M V COMMANA c cece eee eeeeeetteeeeeeeeeeteeee caeeeeeeeeeeteeee 11 Starting a Concurrent Measurement C V command cece eee eeeeeeee eee e eee eeeeetteeeeeeeeeetenee qaeeeeeeeeeeteees 12 Measurement command variations ccceeeeeeeeeeece cette ee eeeeeneaeeeeeeeeeteeaaaaaaaeeeeeeeeeeenenaaaee seeeenenessaaaees 13 Other non concurrent measurements cece cece eee eee cece eter eeeeenaa cease teen eet aaaaaeeeeeeeeetnnee aaaeeeeeeeeeeees 14 CIREMCOMCUM SHITE ASU GINS occas aiesceta eat weiteateeadgatncnsntekdnenieeinenerdetieeaiabisnenecdeeaiteuies 1eedeoueua le 15
28. measurement command variations such as M1 M2 and the like The sensor supports the following ones Measure psi using factory calibration Does not apply user scaling field calibration or offsets Returns 1 value and the units are fixed to psi Measure temperature Celsius or Fahrenheit This returns two values the temperature and the units The units will be 0 for Celsius and 1 for Fahrenheit Measure scale factors user s ope user offset and field calibration offset Use this if you want to view user entered values that can affect the value returned Measure calibration lab slope and offset Use this if you want to view the calibration lab values that can affect the value returned This command requests high accuracy PCB printed circuit board temperature For the KPSI 380 Series this command requests the high accuracy nickel RTD temperature This command requests battery voltage This command combines MO and M2 for both pressure and temperature Remember to issue the DO command after the measurement is complete as signaled by extra Service Request response in order to retrieve the data Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 14 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual other concurrent measurements The SDI standard allows for other concurrent measurement commands su
29. nvenience 1 Serial data white SDI 12 interface between sensors and data recorders 2 Ground black Supply return and earth ground 3 Supply red This line is internally regulated and can accept 8 28 VDC Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 4 of 32 1 800 745 8008 measurement SPECIALTIES KPSI Digital Series User s Manual i EXCITATION POWER SUPPLY EXCITATION RED A SDI 12 Configuration Note This diagram depicts a typical installation Refer to your power supply and instrumentation manufacturer for the specifics of your application Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 5 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Installation The transducers are designed for rugged use however they need protection from over pressure and sharp impact They are designed to be used in a vertical orientation with the sensing diaphragm facing downward For greatest accuracy re calibrations should be performed with the transducer in this position When lowering the transducer into a liquid penetrate the surface slowly and only to the depth necessary Avoid dropping the unit from above the surface Clean the transducer s surface by rinsing itin a mile detergent Direct probing o
30. o 9 A to Z ora to z Values are entered in the form of a polarity sign or followed by up to seven digits including a decimal point The commands are in ASCII and all the replies use printable ASCII characters followed by lt CR gt lt LF gt The case of the letters is important An A is not the same as an a The sensor replies to all SDI commands it supports If the sensor receives a command it does not support no reply is made The reply response will have one of three forms 40000 Where a is sensor address and 0000 indicates that no further message to be sent Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 9 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Where a is sensor address ttt is time in seconds sensor needs to make the measurement or process command and n is the number of data values limited to 9 that may be fetched by the Get Data D0 command when data is ready In this older form the sensor responds a second time with its address a when the data is ready if ttt was not 000 This second response is called a Service Request response This format is generated by older non concurrent measurement commands see M v commands below and other older commands Where a is sensor address ttt is time in seconds sensor needs to make
31. offset Use this form of command only if you vent the sensor to the atmosphere Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 17 of 32 1 800 745 8008 measurement SPECLALT I 5 e o KPSI Digital Series User s Manual gt Use the second form when the sensor is at a stable known pressure Where p represents the signed known pressure value and u signed units For example after venting the sensor at address 0 to the atmosphere the following command would cause a new offset to be computed 0XS If the same sensor was under pressure and stable at 4 65 feet of H20 the following command would adjust the offset to ensure the 4 65 foot offset 0XS 4 65 0 If the same sensor was under pressure and stable at 5 00 psi the following command would adjust the offset to ensure the 5 00 psi offset 0XS 5 00 1 When the sensor has completed self calibration the new offset is stored into memory A response attt1 is returned by any of the above command forms It indicates that command last send to sensor at address a will be complete in ttt seconds and one 1 value offset in units of psi will be returned in the response to a subsequent DO command The offset can also be displayed at any time using the M3 command Remember The units for the displayed field calibration offset will be psi regardless of the units you u
32. or to take a measurement determine how long it will be until the sensor has a reading and then continue making requests to other sensors on the SDI 12 bus This way multiple sensors are taking measurements concurrently Once the measurement time for a sensor expires the data recorder polls that sensor for its data Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 10 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual starting a non concurrent measurement M v command The original command to tell the sensor to start a measurement non concurrently is Where a is the address character and M v is a Start Non Concurrent Measurement command An optional digit v identifies command variations Most data recorders will issue this command and automatically handle the reply to collect data You can also issue the command yourself In reply the sensor will respond with Acknowledges it is from sensor with address a that ttt seconds are required before n values will appear in final data stream the measurement is completed and n acquired When the measurement is complete the sensor sends a second response called a Service Request la Where Service Request response contains only a the address of the sensor Note that you still have no data from the sensor To get data enter
33. p returned in ttt seconds 1 is number values in DO resp ao o is new offset psi Measurement Specialties Inc 1000 Lucas Way Hampton VA 23666 USA www meas spec com 24 of 32 1 757 766 1500 1 800 745 8008 measurement SPECLALT 1 5 o J KPSI Digital Series User s Manual XT Set Averaging aXTt a0011 Time averaging time in a Service Request response seconds 0 to 25 Service Request resp returned in 001 seconds 1 is number values in DO resp aDO as s number samples to be averaged during selected time XUM Set Read aXUM m attt1 Measurement Mode of M Mo m missing to read mode a Service Request response C C0 MC MCo or CC CCO m 0 to set mode for Service request resp returned in m Commands pressure data only seconds 1 is number values in DO default or resp Drop optional m 1 to set mode for argument m to pressure data and Read mode temperature data just like M7 C7 MC7 CC7 commands am m 0 Press only or aDO m 1 Press and Temp XUP Set Pressure aXUPn d a0012 Units n 0 feet of water a Service Request response n 1 psi n 2 kPa Service Request resp returned in n 3 cm of water n 4 m of water n 5 mm of water n 9 user units d optional number of places to right of the decimal point aDO 001 seconds 2 is number values in DO resp NOTE Make sure you use XUU command to set the slope and offs
34. package will be sent back unopened and at the customer s expense Please include the attached vent filter or aneroid bellow with each returned transducer Measurement Specialties will return warranty items prepaid via UPS GROUND If the customer desires another method of return shipment Measurement Specialties will prepay and add the shipping charges to the repair bill Incoming freight charges are the customer s responsibility The customer is also responsible for paying shipping charges to and from Measurement Specialties for any equipment not under warranty Once the return is received it typically takes 5 10 working days for the technician to make a fault determination Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 32 of 32 1 800 745 8008
35. ple sensors to share the same wiring When the data recorder needs data from a particular sensor it requests data using a particular address Only the sensor with the matching address can reply Two or more sensors with same address replying will garble this reply The factory default SDI 12 address 0 is best reserved only for single sensors operating alone on dedicated wiring using the get set sensor address commands No other SDI 12 sensors connected to the system should be set to address 0 or to the desired sensor address Hint If you do not know the address of a particular sensor first use the Get Unknown Address command to have the sensor identify itself Its syntax is as follows gt NOTE There can be only one SDI 12 sensor connected to common wiring in i order for the Get Unknown Address command to work The SDI 12 command for changing a sensor s address is A Set Sensor Address Where a is the current address of the sensor n is the new SDI 12 address Valid addresses are 0 to 9 A to Z a to z The sensor will issue a reply message in response to the command if the command was recognized The message will be the new address n Note that both commands above follow the SDI 12 standard of ending with a terminator As an example the following Set Sensor Address command would set the sensor address from 0 to DAS The sensor will respond with the new address which is 5 Subsequently the a
36. rt Measurement command was not Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 21 of 32 1 800 745 8008 KPSI Digital Series User s Manual measurement SPECIALTIES or MO M1 M2 Identify Sensor Start Non Concurrent Pressure Measurement Start Non Concurrent Factory Pressure Measurement factory calibrated value always in psi Start Non Concurrent Temperature Measurement al aM aDO AM1 aDO aM2 aDO issued the command was aborted by sending a new command before the measurement time expired or an expected Service Request response was not yet received a13 KPSI 500 hhh ssssss vvv 13 Supports SDI Version 1 3 commands KPSI Manufacturer 500 Model number hhh Hardware revision ssssss Serial number Vv Software revision attt2 a Service Request response 2 is number values in DO resp apu or aputu P is pressure value u is units indicator Use XUP command to set units If XUM 1 command executed then temperature value and units code tu also appended attt1 a Service Request response 1 is number values in DO resp ap p is pressure value psi attt2 a Service Request response 2 is number values in DO resp atu t is signed temperature u is units 0 Celsius 1 Fahrenheit Use XUT command to set uni
37. sed in the XSdu command Configuring the Averaging Time setting the averaging time The sensor supports user selectable averaging time for SDI 12 readings The time period in seconds is specified with the following command Where t is the signed time in seconds The example command OXT 10 will set the averaging time to 10 seconds for a sensor at address 0 Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 18 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Alphabetic Command Reference This section documents all the commands supported by the digital transducer All commands are listed alphabetically in a large table with four 4 columns containing the following information Command a 1 3 letter abbreviation operation code for the command Function a functional description of the command Syntax a complete rendering of the command s structure Sensor Response a description of the response s returned by sensor Some commands require another special Get Data command DO to follow them immediately or after a delay of ttt seconds as indicated by a parameter in the main response Also some command responses generate a main response which is followed ttt seconds later by a second response called the Service Request response In both cases a standalone colon will indicat
38. t psi slope offset Where slope and offset are values you can enter into the system The XUU command is used to enter the user defined scale factors The format is Where s is the signed slope and o is the signed offset For example the following command will set the slope to 70 32 and the offset to 0 0 for sensor 0 which are the proper values to convert the psi to cm of water OXUU 70 32 0 Similarly the slope and offset can be set to any values that will produce the desired units NOTE Remember that both an XUU and an XUP command are required for the sensor to report in user defined units field calibration The sensor may have a change in the calibration over time The most common change is a change in sensor zero value read when the pressure is 0 The sensor has two commands that can be used to adjust for this change in zero The XE command allows direct setting of an offset which will be added to the measurement to compensate for this drift Where o is the signed field calibration offset value with units u 0 feet 1 psi 2 kPa 3 cm 4 m 5 mm and 9 user units For example the command OXE 0 02 0 would set the offset pressure of sensor at address 0 to 0 02 feet u 0 The other command used to set the offset is the XS command and it has two forms The first form causes the sensor to make pressure readings and automatically compute a new
39. the Get Data command to sensor Where a is the address character and DO is the command to retrieve measured data Note The number zero follows D not the letter O Depending on the variation of the command the sensor will reply with one of these response formats Where a is the address v is a data value and u is an optional units indicator Both v and u have the format of a polarity sign or followed by up to seven digits including a decimal point Format returned depends on the command variation The u indicates the units of the measurement according to the following tables 0 units are feet of water units are psi units are kilopascal units are cm of water units are meters of water units are mm of water units depend on user entered scale factors slope and offset onankwn Measurement Specialties Inc www meas spec com 1 757 766 1500 1000 Lucas Way Hampton VA 23666 USA 11 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i If the field calibration offset is non zero then one of the following values of u will be returned 10 units are feet of water with non zero field calibration offset 11 units are psi with non zero field calibration offset 12 units are kilopascal with non zero field calibration offset 13 units are cm of water with non zero field calibration offset 14 units are meters o
40. ton VA 23666 USA 2 of 32 1 800 745 8008 measurement SPECIALTIES e KPSI Digital Series User s Manual i Product Introduction The KPSI 500 Series KPSI 350 Series and KPSI 380 Series are high accuracy SDI 12 submersible transducers The KPSI 500 and 350 Series use isolated diaphragm pressure sensors The sensor uses a silicon pressure cell that has been fitted into a stainless steel or titanium package with an integral compliant stainless steel or titanium barrier diaphragm The KPSI 380 Series incorporates a highly accurate nickel RTD sensor into a fully welded 316L stainless steel constructed housing assembly Different user installable nose caps are available for the KPSI 500 Series transducer The closed face end cap with 8 32UNC 2B threaded hole is best used where weights are required and for those installations where users may encounter sharp protruding objects The open face end cap that allows maximum contact with the liquid media is ideal for wastewater and greasy applications where clogging of the sensor is a concern A high density piezometer screen may be inserted into specially drilled open face end caps should the user decide to completely cover the KPSI 500 Series transducer with soil or silt PIEZOMETER 5 OPEN FACED amp CLOSED FACE Cabling and Wiring Most installations using the transducer connect our polyurethane or ETFE cable to a junction box From this
41. ts Measurement Specialties Inc 1000 Lucas Way Hampton VA 23666 USA www meas spec com 22 of 32 1 757 766 1500 1 800 745 8008 measurement SPECLALITIES J KPSI Digital Series User s Manual i M3 Start Non aM3 a0013 Concurrent Scale Factor a Service Request response Measurement 3 is number values in DO resp user slope user aDO asoc offset and field calibration offset s is signed user slope o is signed user offset psi c is signed field cal offset psi M4 Start Non aM4 a0012 Concurrent Standards Lab a Service Request response Scale Factor Measurement 2 is number values in DO resp aDO aso standards lab calibration slope s is signed cal slope and calibration o is signed cal offset psi offset M5 Start Non aM5 attt2 Concurrent i High Accuracy a Service Request response Temperature 2 is number values in DO resp aDO atu t is signed temperature u is tunits 0 Celsius 1 Fahrenheit Use XUT command to set units M6 Start Non aM6 a0021 Concurrent Battery Voltage a Service Request response Measurement 01 is number values in DO resp aDO av v is the battery voltage M7 Start Non aM7 attt4 Concurrent Pressure and 4 is number values in DO resp Temperature Measurement aDO aputu p is pressure value 1 u is units index Units set by XUP Measurement Specialties Inc 10
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