EUTECH INSTRUMENTS ALPHA CON 500 2-WIRE TRANSMITTER, ALPHA COND 500, Alpha CON 500 Instruction Manual
Instruction Manual
CON 500 LCD Transmitter
Conductivity Transmitter with Display
2-wire Conductivity Transmitter
lpha CON500
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68X216867
Rev 0 11/04
Preface
This manual serves to explain the use of the CON 500 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 transmitter as possible. If there are doubts in the use
of the transmitter, please do not hesitate to contact the nearest Authorized
Distributor.
Eutech Instruments will not accept any responsibility for damage or malfunction to
the transmitter caused by improper use of the instrument.
The information presented in this manual is subject to change without notice as
improvements are made, and does not represent a commitment on the part of
Eutech Instruments.
Copyright © 2004
All rights reserved
Eutech Instruments
Rev 0 11/04
TABLE OF CONTENTS
1
INTRODUCTION...................................................................................1
2 PREPARATION ....................................................................................2
2.1 POWER SUPPLY REQUIREMENTS (SL2 POSITION)........................................... 3
2.2 CONNECTING THE ELECTRODE AND TEMPERATURE SENSOR (SL1 POSITION).... 3
2.2.1 To connect the Conductivity electrode:.............................................3
2.2.2 To connect ATC temperature sensor:...............................................4
3 INSTALLATION ....................................................................................5
3.1 MECHANICAL DIMENSIONS ............................................................................ 5
3.2 WALL MOUNT..............................................................................................5
3.3 PANEL MOUNT ............................................................................................6
4 DISPLAY AND KEYPAD FUNCTIONS................................................7
4.1 DISPLAY ..................................................................................................... 7
4.2 KEYPAD ...................................................................................................... 8
5 CALIBRATION......................................................................................9
5.1 IMPORTANT INFORMATION ON TRANSMITTER CALIBRATION ............................... 9
5.2 TEMPERATURE CALIBRATION ...................................................................... 11
5.3 CONDUCTIVITY CALIBRATION ...................................................................... 12
6 ADVANCED SETUP FUNCTIONS.....................................................13
6.1 RANGE AND ZOOMING SELECTION SETTING.................................................. 13
6.2 TEMPERATURE COMPENSATION SETTING .....................................................15
6.2.1 Automatic Temperature Compensation ..........................................15
6.2.2 Manual Temperature Compensation...............................................16
6.3 HOLD CURRENT SETTING.......................................................................... 18
6.4 OUT-OF-RANGE CURRENT SETTING ............................................................ 18
6.5 TEMPERATURE COEFFICIENT AND NORMALIZATION TEMPERATURE SETTING ....19
6.5.1 Setting the temperature coefficient .................................................19
6.5.2 Setting the normalization temperature............................................19
6.6 CELL CONSTANT SETTING .......................................................................... 20
6.7 LINE RESISTANCE SETTING ......................................................................... 20
6.8 VIEWING CALIBRATION POINT......................................................................21
6.9 VIEWING THE ELECTRODE DATA..................................................................21
6.10 RESET FUNCTION ...................................................................................... 22
7 FACTORY DEFAULT SETTINGS ......................................................23
8 TROUBLE SHOOTING GUIDE...........................................................24
9 SPECIFICATIONS ..............................................................................25
10 ACCESSORIES...............................................................................26
11 WARRANTY....................................................................................27
12 RETURN OF ITEMS........................................................................27
Instruction Manual CON 500
- 1 -
1 INTRODUCTION
Thank you for selecting a CON 500 LCD Transmitter. This isolated output 4-20mA
transmitter is a sturdy 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.
2-wire Conductivity Transmitter
lpha CON500
MEAS
°C
READY
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A
TC
1413
µ
S
Instruction Manual CON 500
- 2 -
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.
Instruction Manual CON 500
- 3 -
2.1 Power Supply Requirements (SL2 Position)
The CON 500 transmitter requires a 12 to 24V 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 CON 500 transmitter accepts any industrial electrodes for conductivity
measurements and they are usually offered with bare wires.
1. Insert the electrode’s conductivity wire Low into pin 3 of SL1 connector.
Tighten the screw.
2. Insert the electrode’s conductivity wire High into pin 4 of SL1 connector.
Tighten the screw.
Conductivity wire High
Conductivity wire Low
Shield wire
Pt 100 Input wire
Pt 100 Sense wire
Pt 100 Return wire
To Electrode
Alpha
CON 500
Power
Supply
Chart
Recorder
1
2
Instruction Manual CON 500
- 4 -
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 industrial conductivity electrodes.
Otherwise, a separate 100Ω Pt RTD temperature probe can be used.
3 wire temperature sensor
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
1. Take a small length of wire and short pins 5 and 6 of SL1 connector. Insert
Pt 100 sense wire into pin 6 of SL1 connector and tighten the screws.
2. Insert Pt 100 return wire and the shield wire to pin 7 of SL1 connector.
Tighten the screw.
IMPORTANT: It is necessary to connect the SHIEL D wire to th e pin 7 as stat ed
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 tig hten ed fo r pro per
contact.
Instruction Manual CON 500
- 5 -
3 INSTALLATION
3.1 Mechanical Dimensions
2-wire Conductivity Transmitter
lpha CON500
3.2 Wall Mount
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