Sensorex CX100 Manuel utilisateur
Loop-Powered 4-20mA
Conductivity Transmitter
CX100
PRODUCT INSTRUCTION MANUAL
1
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. Please contact Sensorex
if you have any questions about the use of this transmitter.
Sensorex will not accept any responsibility for damage or malfunction to the
transmitter caused by improper use.
The information presented in this ma nual is subject to change without notice as
improvements are made, and does not re present a commitment on the part of
Sensorex.
Copyright © 2012
All rights reserved
2
TABLE OF CONTENTS
1 INTRODUCTION ...................................................................................3
2 PREPARATION ....................................................................................4
2.1 POWER SUPPLY REQUIREMENTS (SL2 POSITION) ...........................................5
2.2 CONNECTING THE ELECTRODE AND TEMPERATURE SENSOR (SL1 POSITION) ....5
3 INSTALLATION .................................................................................... 7
3.1 MECHANICAL DIMENSIONS ............................................................................7
3.2 WALL MOUNT ..............................................................................................7
3.3 PANEL MOUNT ............................................................................................8
4 DISPLAY AND KEYPAD FUNCTIONS .............................................. 9
4.1 DISPLAY ................................................................................................... 9
4.2 KEYPAD .................................................................................................... 10
5 CALIBRATION .................................................................................... 11
5.1 IMPORTANT INFORMATION ON TRANSMITTER CALIBRATION ............................. 11
5.2 TEMPERATURE CALIBRATION ...................................................................... 13
5.3 CONDUCTIVITY CALIBRATION ...................................................................... 14
6 ADVANCED SETUP FUNCTIONS ..................................................... 15
6.1 RANGE AND ZOOMING SELECTION SETTING .................................................. 15
6.2 TEMPERATURE COMPENSATION SETTING ..................................................... 17
6.3 HOLD CURRENT SETTING .......................................................................... 20
6.4 OUT-OF-RANGE CURRENT SETTING ............................................................ 20
6.5 TEMPERATURE COEFFICIENT AND NORMALIZATION TEMPERATURE SETTING .... 21
6.6 CELL CONSTANT SETTING .......................................................................... 22
6.7 LINE RESISTANCE SETTING ......................................................................... 22
6.8 VIEWING CALIBRATION POINT...................................................................... 23
6.9 VIEWING THE ELECTRODE DATA .................................................................. 23
6.10 RESET FUNCTION ...................................................................................... 24
7 FACTORY DEFAULT SETTINGS ...................................................... 25
8 TROUBLE SHOOTING GUIDE ........................................................... 26
9 SPECIFICATIONS .............................................................................. 27
10 WARRANTY ........................................................................................ 28
11 RETURN OF ITEMS ............................................................................ 28
3
1 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. Your transmitter includes
an instruction manual and a warranty card.
Please read this manual thoroughly before operating your transmitter.
Conductivity ZLUHTransmitter
.
ATC
1413
μ
S
.
4
2 PREPARATION
Remove screws from the four corners at the back of the Transmitter, and remove
back cover.
Connectors should be exposed as follows:
NC
NC
NC
Figure 1 – Connection Guide
All wiring is done on 2 detachable connectors: –
1. 9-pin connector (located on SL1 position) for Conductivity electrode and
temperature sensor
2. 3-pin connector (located on SL2 position) for power supply.
Using a suitable screwdriver, loosen screws from top of connector.
When inserting the wires, always hold connector with top screws facing up.
5
2.1 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.
1. Insert positive loop wire from power supply to pin 1, tighten screw.
2. Insert negative loop wire to pin 2, tighten screw. This wire may be linked to
a chart recorder or to negative terminal of power supply.
2.2 Connecting the Electrode and Temperature Sensor (SL1
Position)
2.2.1 To connect the Conductivity electrode:
The CX100 conductivity transmitter accepts any industrial electrodes for conductivity
measurements and they are usually offered with bare wires.
1. For Sensorex conductivity electrodes (except model CS8000TC/PT1) wiring
is as follows: Red (connect to 3(cond L) on SL1), Black (connect to 4 (cond
H) of SL1), See section 2.22 for temperature wire connection
CX100
Power
Supply
Chart
Recorder
1
2
2. For Sensorex model CS8000TC/PT1 cable assembly S855 is used.
Wiring wiring is as follows: Coaxial Center wire (connect to 3(cond L) on
SL1), Coaxial braid (connect to 4 (cond H) of SL1), See section 2.22 for
temperature wire connection
6
2.2.2 To connect ATC temperature sensor:
For Automatic Temperature Compensated (ATC) Conductivity readings, an in-built
temperature sensor is usually integrated in the in dustrial conductivity electrodes.
Otherwise, a separate 100Ω Pt RTD temperature probe can be used.
3 wire temperature sensor (not Sensorex)
1. Insert the Pt100 input wire to pin 5 of SL1 connector. Tighten the screw.
2. Insert the Pt100 sense wire to pin 6 of SL1 connector. Tighten the screw.
3. 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)
1. 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.
2. Insert Pt 10 0 return wire (white) and the s hield wire to pin 7 of SL1
connector. Tighten the screw.
IMPORTANT: It is necessary to connect the SHIELD wire to the pin 7 as stated
above to eliminate possible oscillation of the conductivity and/or temperature
reading due to electrical noise or interference.
Ensure that no bare wires are exposed and all screws are tightened for proper
contact.
2 wire temperature sensor(Sensorex model CS8000TC)
1. Take a small length of wire and short pins 5 and 6 of SL1 connector. Insert
Pt 100 sense wire (red) into pin 6 of SL1 connector and tighten the screws.
Insert Pt 10 0 return wire (black) and the s hield wire to pin 7 of SL1
connector. Tighten the screw.
7
3 INSTALLATION
3.1 Mechanical Dimensions
2-wire Conductivity Transmitter
3.2 Wall Mount
mm mm
mm
mm
3.76 in.
5.06 in.
2.60 in.
3.74 in.
8
3.3 Panel Mount
1. Prepare panel cut-out of
92.0 mm by 92.0 mm
2. Remove back cover of
transmitter and slide it
through panel cut-out
Panel (side)
3. Attach lugs to both
sides of transmitter
4. Thread rods through
lugs until transmitter
is held in place against
panel
(3.62 x 3.62 in.)
9
4 DISPLAY AND KEYPAD FUNCTIONS
4.1 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.
SETUP MEAS CAL
ON
°C
-.8.8.8
-1.8.8.8
ATC
mS
R.
ERR
123 4
5
6
7
8
9
10
11
12
13
15
16
14
μ
S
%
K=
Primary Display
(Upper Display)
Secondary Display
(Lower Display)
1. SETUP - Setup mode
indicator
5. % - Temperature
Coefficient
indicator
9. ATC - Automatic Temp.
Compensation 13. - Calibration
standard indicator
2. MEAS - Measurement
mode indicator
6. mS - Milli Siemens
indicator
10. K = - Cell Constant
indicator.
14. ON /OFF– READY set
up enable/disable
indicator.
3. CAL - Calibration mode
indicator 7. µS - Micro Siemens
indicator
11. ERR – Wrong key
press error
indicator
15. HOLD – Hold indicator
4. R. – Line Resistance in
Ohms
8. °C - Temperature
indicator 12. - Electrode indicator
16. READY – Ready
indicator
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