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Related Manuals for Sensorex CX100
Summary of Contents for Sensorex CX100
- Page 1 PRODUCT INSTRUCTION MANUAL CX100 Loop-Powered 4-20mA Conductivity Transmitter...
- Page 2 Preface This manual s erves to explain the use of the CX100 transmitter. It functions in two ways, firstly as a step by step guide to help you to operate the transmitter. Secondly, it serves as a handy reference guide. It is written to cover as many anticipated applications of the trans mitter as possible.
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Page 3: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ...................3 PREPARATION ..................4 (SL2 P ) ...........5 OWER UPPLY EQUIREMENTS OSITION (SL1 P ) ..5 ONNECTING THE LECTRODE AND EMPERATURE ENSOR OSITION INSTALLATION ..................7 ................7 ECHANICAL IMENSIONS ....................7 OUNT ....................8 ANEL OUNT DISPLAY AND KEYPAD FUNCTIONS ..........9 .................... -
Page 4: Introduction
INTRODUCTION Thank you for selecting an CX100 2-Wire Conductivity Transmitter. This isolated output 4-20mA transmitter is a stur dy microprocessor-based instrument that measures conductivity and temperature and transmits its output via the 2-wire power supply loop. This transmitter has many user-friendly features – all of which are completely accessible through the water-resistant membrane keypad. -
Page 5: Preparation
PREPARATION Remove screws from the four corners at the back of the Transmitter, and remove back cover. Connectors should be exposed as follows: Figure 1 – Connection Guide All wiring is done on 2 detachable connectors: – 9-pin connector (located on SL1 position) for Conductivity electrode and temperature sensor 3-pin connector (located on SL2 position) for power supply. -
Page 6: Power Supply Requirements (Sl2 Position)
Power Supply Requirements (SL2 Position) The CX100 Conductivity transmitter requires a 1 2 to 2 4V DC power supply. Other Transmitters and/or a chart recorder may be connected in the loop. Insert positive loop wire from power supply to pin 1, tighten screw. - Page 7 Insert the Pt100 return wire and the shield wire to pin 7 of SL1 connector. Tighten the screw. 2 wire temperature sensor(Sensorex All models except CS8000TC) Take a small length of wire and short pins 5 and 6 of SL1 connector. Insert Pt 100 sense wire (green) into pin 6 of SL1 connector and tighten the screws.
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Page 8: Installation
INSTALLATION Mechanical Dimensions 2-wire Conductivity Transmitter 2.60 in. 5.06 in. 3.74 in. Wall Mount... -
Page 9: Panel Mount
Panel Mount 1. Prepare panel cut-out of Panel (side) 92.0 mm by 92.0 mm (3.62 x 3.62 in.) 2. Remove back cover of transmitter and slide it through panel cut-out 4. Thread rods through lugs until transmitter is held in place against panel 3. -
Page 10: Display And Keypad Functions
DISPLAY AND KEYPAD FUNCTIONS Display The LCD has a primary and secondary display. • The primary display shows the measured conductivity value. • The secondary display shows the measured temperature. In C alibration mode, measured conductivity values are displayed here. Primary Display (Upper Display) SETUP... -
Page 11: Keypad
Keypad MEAS MEAS MEAS MEAS MEAS MEAS MEAS MEAS MEAS MEAS 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 READY READY READY READY READY READY READY READY READY READY μS μS... -
Page 12: Calibration
CALIBRATION Important Information on Transmitter Calibration Calibration should be carried when you are using your transmitter with a new electrode for the first time or when you suspect that the transmitter/electrode is out of calibration. Your transmitter allo ws you to perform temperatur e calibration and conductivity calibration. - Page 13 Table 1 Conductivity Recommended Calibration Solution Measuring Range Range 0.00 19.99 μS 6.00 to 17.00 μS 199.9 μS 60.0 to 170.0 μS 1999 μS 600 to 1700 μS 0.00 10.00 mS 6.00 to 7.00 mS 0.00 19.99 mS 6.00 to 17.00 mS 199.9 mS 60.0 to 170.0 mS To view current calibration point, see Section 6.8 - Viewing Calibration .
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Page 14: Temperature Calibration
Temperature Calibration You need to perform temperature calibration if your transmitter temperature reading is inaccurate or if the transmitter’s cell constant setting is changed. It is because the transmitter’s temperature offset calibration will be erased once a n ew cell constant is selected. -
Page 15: Conductivity Calibration
Conductivity Calibration MEAS A 1-point Calibration is required for this transmitter. If 1578 μS the calibration process is aborted, your transmitter will revert to the previous calibration data. °C Organize your calibration standard solution 25.5 in two beakers – one for rinsing and the other for calibration. -
Page 16: Advanced Setup Functions
The sub-groups are: Range and Zooming Selection Setting Your CX100 transmitter provides six selections of conductivity measurement ranges to suit your process application needs. Zooming selection is available where both the 4 mA and 2 0 mA output current c an be assigned to specific c onductivity values for a more refined output. - Page 17 For zooming setting, use the ▲ or ▼ keys to set SETUP the conductivity low zoom value for the 4 mA 0.00 μS HOLD current and press the ENT key to c onfirm. The transmitter now displays the high zoom value setup.
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Page 18: Temperature Compensation Setting
Temperature Compensation Setting Conductivity readings are affected by temperature. Under varying temperature conditions, use ATC to compens ate for th e conductivity values. If temperature of sample is constant, and a temperature sensor/probe is not available, Manual Temperature Compensation can be utilized. 6.2.1 Automatic Temperature Compensation For automatic temperature compensation (ATC) selection, connect the ATC sensor... - Page 19 6.2.2 Manual Temperature Compensation For manual temperature compensation you can set t he process and calibration temperatures. This allows calibration at a temperature other than the process temperature. Example: setting a cal ibration temperature of 25°C lets you calibrate using standard solutions at 25°C, even if your process temperature is different from 25°C.
- Page 20 SETUP HOLD SETUP SETUP HOLD HOLD SETUP SETUP HOLD HOLD °C SETUP HOLD Temperature Compensation Setting Chart – CX100 Transmitter...
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Page 21: Hold Current Setting
HOLD Current Setting SETUP When Transmitter is in CAL or SET UP modes, it HOLD automatically goes into a ‘HOLD’ mode. To indicate T ransmitter is in ‘HOLD’ mod e, output curren t can be set to 22 mA output by activating the ‘HLD On’. Press the ENT key and use ▲... -
Page 22: Temperature Coefficient And Normalization Temperature Setting
Setting Since different process liquid may require different temperature coefficient factor for its temperature compensation calculation, the CX100 transmitter allows 0 to 10 % temperature coefficient factor adjustme nt to cater for your different ap plication needs. You also have the s election of 25.0 °C or 20.0°C for th e conductivity measurement normalization temperature. -
Page 23: Cell Constant Setting
Cell Constant Setting You can select up to three types of cell constant in the setup mode: - K=1.0, K=0.1 or K=10. From the measurement mode, SETUP Press the ENT key to enter the setup mode. Use HOLD the ▲ or ▼ keys to scroll till LCD displays ‘SEt’ in the upper display;... -
Page 24: Viewing Calibration Point
‘---‘. Viewing the Electrode Data The CX100 transmitter lets you check the electrode’s parameters for diagnostic purposes. This option s hows you the curr ent effective cell constant and its range. The cell constant is adjusted according to your calibration. -
Page 25: 6.10 Reset Function
6.10 Reset Function SETUP The reset fun ction lets you choose to either reset the HOLD transmitter’s conductivity calibration only or conductivity calibration plus all setup fu nctions that you might have changed back to factor y default settings. However, the temperature compensation setting, as in S ection 6.2, will remain unchanged. -
Page 26: Factory Default Settings
FACTORY DEFAULT SETTINGS SETUP DEFAULT FUNCTION PAGE SETTING Selection of effective conductivity range 1999 uS, r3 SET rng Setting low zooming selection 0 uS, Lo Setting high zooming selection 1999 uS, Hi Selection of Automatic or Manual SET °C AtC On Temperature Compensation Selection of HOLD current to be of 22 mA or SET HLd... -
Page 27: Trouble Shooting Guide
TROUBLE SHOOTING GUIDE Problem Cause Solution Power on but a). Loose connections a). Ensure cables are making no display good contact. b). Cables not in correct polarity (+ and – position). b). Re-wire loop cables with correct polarity. Unstable a). Air bubbles in probe. a). -
Page 28: Specifications
SPECIFICATIONS Cell Constant Conductivity Range Resolution (r1 to r6) 0.1, 1.0 Range 1 = 0 – 19.99 uS/cm 0.01 uS 0.1, 1.0, 10.0 Range 2 = 0 – 199.9 uS/cm 0.1uS 0.1, 1.0, 10.0 Range 3 = 0 – 1999 uS/cm 1 uS 0.1, 1.0, 10.0 Range 4 = 0 –... -
Page 29: 10 Warranty
If repair or adjustment is necessary and has not been the result of abuse or misuse within the des ignated period, please contact Sensorex for an RMA# and correction will be made without charge. Sensorex will determine if the product p roblem is due to manufacturing defect or customer misuse.
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