Seametrics INW CT2X, Instructions Manual

Page 1: ...PROUDLY MADE IN THE USA C e rtified Compa n y ISO 9001 2008 INW CT2X Conductivity Smart Sensor and Data Logger Instructions For PSIG sensors refer to page 21 regarding desiccant use ...

Page 2: ...CT2X INSTRUCTIONS Seametrics 253 872 0284 Page 2 inwusa com ...

Page 3: ...Lite Page 15 Real Time Monitor Page 15 Setting up Data Recording Page 15 Retrieving Data Page 15 Viewing Data Page 15 Exporting Data Page 16 A Word about Units Page 16 Direct Read Modbus SDI 12 Setting Units for Direct Read Page 16 Power Consideration Page 17 Reading via Modbus RTU Page 17 Reading via SDI 12 Page 18 Maintenance Desiccant Tubes Page 21 Removing Debris from End Cone Page 21 Sensor C...

Page 4: ...ub with a small brush Depth and level is measured with an extremely rugged and stable piezo electric media isolated pressure element and compensated for temperature using INW s proprietary calibration methodology Temperature is measured using a borosilicate glass encapsulated thermistor The CT2X is powered internally with two AA batteries Alternately it can be powered with an external auxiliary po...

Page 5: ... encapsulated thermistor 30K ohm thermistor Silicon strain gauge transducer 316 stainless or Hastelloy Epoxy Graphite 4 pole Accuracy 0 25 C 0 05 FSO typical static 0 1 FSO maximum static B F S L 20 C Static 0 5 of measured value 0 100 000 µS cm Resolution 0 1 C 0 0034 FS typical 32 bit internal 0 1 µS cm 0 001 mS cm 0 1 mg L TDS 0 001 PSU Units Celsius Fahrenheit Kelvin PSI FtH O inH O mmH O mH O...

Page 6: ...d label on the sensor to be sure that the proper range and type were provided Also check the label attached to the cable at the connector end for the proper cable length Do s and Don ts Don t drop into well Lower gently to prevent damage Don t scrape cable over edge of well May nick or fray the cable Don t bend cable sharply May close off vent tube and or weaken internal wires Don t support sensor...

Page 7: ...V AA internal batteries If auxiliary power is desired you can use a 9 16 VDC supply that can provide 15 mA Connect to Vaux pin 1 white and Ground pin 5 blue or contact INW for auxiliary power supplies Connecting the CT2X to a Computer Cabled sensors are terminated with a weather resistant connector Cableless sensors are terminated with a weather resistant connector that is inside a screw cap Conne...

Page 8: ...ata and to export data to external files for use with spreadsheets or databases Refer to the software manuals for details on installing and using Aqua4Plus or Aqua4Plus Lite Setting the Continuous Rate The CT2X can take readings more often than once per second This is known as a continuous rate Set the continuous rate for the CT2X from the Configure Menu Sensor Continuous Rate To use the continuou...

Page 9: ...or should not be installed at a depth below 11 55 feet If the sensor is installed below its maximum range damage may result to the sensor and the output reading will not be correct Desiccant Use On sensors with a vented pressure option a desiccant tube prevents moisture in the air from being sucked into the vent tube which can cause erratic readings and sensor damage The desiccant tube is filled w...

Page 10: ...ation Settings and calibration values can only be changed when there is no data on the sensor Be sure to retrieve any data and then erase the data on the sensor before proceeding Field calibration is performed on each channel separately To calibrate a specific channel select Settings and Configuration from the Configure Menu in Aqua4Plus click the Settings button in Aqua4Plus Lite and then click o...

Page 11: ...mount of the lower solution Dry with clean paper towel and cotton swab Place sensor in lower solution Make sure there are no bubbles in the conductivity slot Allow time for sensor to stabilize Enter the first reference value the Ref box 8 for the first point See NOTE in preparation section Click first Measure button 9 When readings have stabilized to your satisfaction click the OK button in the po...

Page 12: ... of setting A picture will display illustrating the type of selection Available types Depth Submergence Depth to Water Elevation Staff Gauge 4 Supply any requested information 5 Within the Calculator supply any requested information 6 Click the Measure button to get a current measurement from the sensor Two point calibrations require a second reference value and clicking of the second Measure butt...

Page 13: ...button 7 to apply calculated values The calculated slope and offset will be transferred to the fields near the top of the window Click OK 8 to save the value to the sensor Verifying Settings Using the Real Time Monitor take a few readings to verify it is reading as expected IMPORTANT NOTE When taking readings on an absolute sensor you will need to SUBTRACT the current barometric pressure to get su...

Page 14: ...ings Using the Real Time Monitor take a few readings to verify it is reading as expected IMPORTANT NOTE When taking readings on an absolute sensor you will need to SUBTRACT the current barometric pressure to get elevation Staff Gauge When using the Staff Gauge setting you may want to change the channel label at the top of the Settings window to read Staff Gauge Computing Offset If using an absolut...

Page 15: ...sor Setting up Data Recording Click the tool button A Logging Schedule Window will open Refer to the software instruction manuals for details in describing your schedule Click the Start button to save the schedule to the sensor and begin recording Using the Logging Schedule Window describe the test steps for your particular test Retrieving Data from the Sensor Datalogger Click on the file you want...

Page 16: ...its for the returned values and or the Modbus baud rate These are described in the following sections For Modbus direct read you must have CT2X firmware 1 5 or higher For SDI 12 you must have firmware 2 0 or higher Setting Units for Direct Read By default the CT2X uses the following units Temperature Degrees Celsius Conductivity µS cm Pressure PSI Salinity PSU TDS mg L Firmware version 2 8 or high...

Page 17: ... window Taking Measurements Reading Registers Read measurements using Modbus function 03 Read Holding Registers Readings are located in two registers each starting at address 62592 CT2X register addressing is zero based i e starts at zero If your equipment uses one based addressing you will need to add one to the register addresses Register Addresses for the CT2X Zero based One based Temperature 6...

Page 18: ...surement only a D0 a 20 7862 cr lf Read salinity a M6 a 0021 cr lf Request TDS measurement only a D0 a 14700 9 cr lf Read TDS Reading via SDI 12 Note The default units setting for pressure is PSI The default units setting for temperature is Celsius To change these use the Direct Read Units in the Aqua4Plus Aqua4Plus Lite Control Software Note Conductivity is always returned in µS cm Salinity in PS...

Page 19: ...inity measurement only a D0 a 20 7862 crc cr lf Read salinity a MC6 a 0021 cr lf Request TDS measurement only a D0 a 14700 9 crc cr lf Read TDS Concurrent Measurement a C a 0024 cr lf Request all basic measurements a D0 a 22 0512 155 0127 155 2155 12 0512 cr lf Read temperature conductivity linear conductivity nLFn pressure a C1 a 0021 cr lf Request temperature measurement only a D0 a 22 0512 cr l...

Page 20: ... cr lf Read temperature a CC2 a 0021 cr lf Request linear conductivity measurement only a D0 a 155 0127 crc cr lf Read linear conductivity a CC3 a 0021 cr lf Request nLFn conductivity measurement only a D0 a 155 0127 crc cr lf Read nLFn conductivity a CC4 a 0021 cr lf Request pressure measurement only a D0 a 12 0512 crc cr lf Read pressure a CC5 a 0021 cr lf Request salinity measurement only a D0 ...

Page 21: ...can be provided The connectors used by INW are not submersible but are designed to be splash resistant Pressure element Water inlet End cone Desiccant Tubes on Vented Units On vented sensors inspect the desiccant tube at least once every two months The desiccant tube prevents moisture in the air from being sucked into the vent tube which can cause erratic readings and sensor damage The desiccant t...

Page 22: ... not Cabled Sensor Cableless Sensor Care must be taken to compress the black square ring before attempting to twist the housing Forceful twisting of the housing can permanently damage the sensor Securing the Sensor In order to compress the black square ring the sensor must be secured so that you can apply downward pressure to compress the ring This can be done by holding in your hand using a vise ...

Page 23: ...ing the Housing in next page Cableless Sensor By Hand cabled version only 1 Tightly grasp the top cap in one hand 2 Brace your hand against something such as a table or the ground Do not allow the cable to be pinched against the brace Continue to Removing the Housing on the next column With Vise recommended method Cabled Sensor 1 If possible use a set of soft jaws as shown to prevent marring the s...

Page 24: ...ng connector it only goes in one way so make sure not to force it Pull wires gently to the side to allow battery removal Connector connected properly 4 Hold the top cap assembly at 90 to the housing opening as shown Depress the spring with your fingertip and tuck the wiring into the cutaway on the circuit board with your thumb to protect it while being installed back into the housing Wires tucked ...

Page 25: ... cable Moisture in the unit Return for evaluation and repair Damaged transmitter Return for evaluation and repair Oscillating pressure readings over time usually 0 5 to 1 5 feet of water Plugged vent tube if using a vented unit Be sure desiccant tube is installed Test by gently applying a small amount of pressure to the end of the desiccant tube and seeing if this affect the transmitter reading If...

Page 26: ...section Temperature compensation turned off In Settings and Calibration section If using Non Linear temperature compensation be sure Non Linear box is checked If using normal temperature compensation be sure that the Temp Coef is not set to zero 2 1 works for a wide variety of fluids If set to zero the conductivity readings will vary with temperature Loose or broken wires in connector Repair or re...

Page 27: ...altered or repaired by the Buyer without prior written approval by the Seller all warranties are void Equipment and accessories not manufactured by the Seller are warranted only to the extent of and by the original manufacturer s warranty THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES WHETHER ORAL WRITTEN EXPRESSED IMPLIED OR STATUTORY IMPLIED WARRANTIES OF FITNESS AND MERCHANTABILIT...

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