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Seametrics CT2X, Instructions For Use Manual

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Precision Environmental Sensors

An ON

I

CON Brand

PROUDLY

    MADE

       IN THE

USA

C

er

tif

ied Compa

ny

ISO

9001

CT2X

Conductivity Smart Sensor

and Data Logger Instructions

For PSIG

sensor

s, refer

to p

age 25

regar

ding

desiccant

use! 

For Sales & Service Contact

2650 E. 40th Ave. • Denver, CO 80205

Phone 303-320-4764 • Fax 303-322-7242

1-800-833-7958

www.geotechenv.com

Summary of Contents for CT2X

Page 1: ... e rtified Compa n y ISO 9001 CT2X Conductivity Smart Sensor and Data Logger Instructions For PSIG sensors refer to page 25 regarding desiccant use For Sales Service Contact 2650 E 40th Ave Denver CO 80205 Phone 303 320 4764 Fax 303 322 7242 1 800 833 7958 www geotechenv com ...

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

Page 3: ...uge Page 15 Operation Real time Data Page 16 Data Logging Page 17 Reports Page 19 Barometric Compensation Page 20 Direct Read Modbus SDI 12 Reading via Modbus RTU Page 21 Reading via SDI 12 Page 22 Maintenance Desiccant Tubes Page 25 Removing Debris from End Cone Page 25 Sensor Cable End Connections Page 25 Changing Batteries Page 26 Troubleshooting Problems Probable Causes Things to Try Page 29 T...

Page 4: ...n simply scrub 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 Seametrics s proprietary calibration methodology Temperature is measured using a borosilicate glass encapsulated thermistor The CT2X is powered internally with two replaceable AA batteries Alternately it can be powere...

Page 5: ...ss 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...

Page 6: ...hed 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 sens...

Page 7: ...weather resistant connector that is inside a screw cap Connect the weather resistant connector to your computer s USB port as shown below Connecting sensor to your computer using Seametrics USB to RS485 adapter Aqua4Plus 2 0 communicate with the sensor using the USB to RS485 adapter cable This cable requires drivers to be installed on your computer If you are connected to the Internet when you fir...

Page 8: ...click Rescan While scanning is active you ll see a green dot flash in the upper right corner of the program Scanning is complete when this dot stops flashing If your sensor still won t connect you can expand the Modbus address range under program settings here Simply drag the Address Range slider higher up to increase the maximum Modbus address scanned If you ve scanned all the way up through addr...

Page 9: ...ure change The CT2X has built in temperature compensation to correct for changes in temperature As a user you can select either a linear temperature compensation method or a non linear nLFn compensation method In the linear mode a constant temperature coefficient is applied to the readings This defaults to 2 1 per degree C which works well for a wide range of applications If you want to use the li...

Page 10: ...ction for care and changing of desiccant 1 If your CT2X has the pressure option then the maximum installation depth depends on the range of the sensor One 1 PSI is equal to approximately 2 31 feet of water If you have a 5 PSI sensor the range is 11 55 feet of water and the sensor should not be installed at a depth below 11 55 feet If the sensor is installed below its maximum range damage may resul...

Page 11: ...ensor will automatically reconnect at new address and or Baud Rate To change the Direct Read output units for direct Modbus or SDI12 integration simply select the desired output units from the drop down menus To change Aqua4Plus 2 0 display units scaling see Program Settings Sensor Clock can be synced with your PC time or set manually if desired To set manually enter your desired date time and cli...

Page 12: ... slightly try stirring your standard with the sensor If the standard has been sitting for a time the solution can begin to settle out affecting the readings Conductivity Calibration To perform a Conductivity Calibration first connect to your CT2X and ensure all data has been uploaded and erased from the sensor Prepare your calibration standard s and place the sensor in your first point calibration...

Page 13: ...and use the nLFn function to temperature compensate the conductivity channel This method meets the DIN EN 27888 standards For linear temperature compensation set the temperature you d like your conductivity corrected to in the Ref Temp C box and the appropriate temperature coefficient you d like to use in the Temp Coef C box Seametrics defaults the conductivity to a Ref Temp of 25 and 2 1 Deg C fo...

Page 14: ...ity while Aqua4Plus 2 0 is measuring to ensure an accurate calibration Click Ok and Aqua4Plus 2 0 will calculate the new slope and offset values Click Apply to confirm the new slope and offset values and Aqua4Plus 2 0 will provide a real time reading to verify calibration was successful Depth to water for PSIG sensors only see Barometric Compensation Utility for PSIA sensors Position the sensor in...

Page 15: ...nsor before proceeding with calibration Once positioned connect to sensor and select the calibration button followed by selecting the Staff Gauge option Double check measurement units selection before proceeding Enter your current Staff Gauge reading in the Ref Point box making sure to match measurement units Click Measure and Aqua4Plus 2 0 will take 10 readings and display the average Watch for s...

Page 16: ... will permanently save this real time data set to your Reports database OPERATION Real time Data Connect to sensor and select the Real time data tab To start real time readings click Start readings default to table view To switch to Real time graphing view click the graph icon Real time readings default to a 1 second interval for 1 minute to adjust enter your desired settings here ...

Page 17: ...ing a duration time When set by number of records the time of the recording phase will be displayed detailing how long that phase will run When set by time the total number of records for that phase will be displayed If you need to check settings or perform a calibration click before proceeding with logging setup to switch to the Settings and Calibration screen You may sync the sensor clock with t...

Page 18: ...ging setup details Data files already downloaded will show in the Reports column clicking here will bring you to the reports screen to view the data See Reports section for details You may only have 1 active data file recording on each sensor however you can store multiple files in memory if desired Starting a new file will automatically terminate the active logging and begin the new logging sched...

Page 19: ...g a section with you mouse or by adjusting the slider below the graph like below You may change the display units within the graph view by selecting the appropriate channel here Click to switch to full screen graphing view Graph saving and export options are available here Click to view data as a table Click to view data statistics The Information tab is a new feature allowing users to add metadat...

Page 20: ...file you would like to use to compensate the report select either the Submergence or Depth To Water tab then click Continue If compensating for Depth to Water enter your depth to water reference measurement and the date time the measurement was taken typically taken with a water level indicator before data is uploaded from the sensor before clicking Continue Aqua4Plus 2 0 will perform the barometr...

Page 21: ...nd then starts taking new readings and updating the registers After approximately 10 seconds if no more readings have been requested the sensor goes back to sleep Because of this the first reading you get will be old If you are taking readings at intervals of less than 10 seconds simply ignore the first reading all remaining readings will be current On the other hand if you are taking readings at ...

Page 22: ...nity measurement 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 2 0 Control Software Note Conductivity is always returned in µS cm Salinity in PSU a...

Page 23: ...alinity 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...

Page 24: ...rc 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 D...

Page 25: ...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 tube is filled with blue silica gel beads A locking ...

Page 26: ...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 or using pliers as follows Swage Knurling Black square ring Housing Top cap Knurling Black square ring Housing Top cap Battery Type Two 1 5V AA batteries Lithium or Alkaline lithium recommended IMPORTANT Because cha...

Page 27: ...oving 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...

Page 28: ...ring 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 tucke...

Page 29: ... 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 it does not then the vent tube is plugged Return for evaluation and repair Actual water level changes in the aquifer itself in response to barometric pressure changes This effect can occur in tight ...

Page 30: ...n 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 ...

Page 31: ...CT2X INSTRUCTIONS Seametrics 253 872 0284 Page 31 seametrics com ...

Page 32: ...rranty period stated herein In the event that equipment is 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...

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