eutech-instruments 2-wire temperature transmitter User Manual
68X256904 Rev 1 10/99
6
Before Calibration
Remove cover of Transmitter and ensure that electrode is correctly
connected as above. Connect Amp meter to the 4/20mA output of
Transmitter (Appendix 1).
connected as above. Connect Amp meter to the 4/20mA output of
Transmitter (Appendix 1).
7
Temperature Transmitter Calibration
1)
Immerse Temperature probe in water bath at varying temperatures
and observe Amp meter display;
and observe Amp meter display;
2)
Amp meter should read corresponding mA output as follows:
3)
In 0oC, the output is 4 mA;
4)
In 25oC, the output is 8 mA;
5)
In 50oC, the output is 12 mA;
6)
In 80oC, the output is 16.8 mA;
7)
In 100oC, the output is 20 mA;
8)
To calibrate, locate “Temp adjustment” trimmer;
9)
Using a fine screwdriver, slowly turn trimmer till Amp meter reads
correct current output;
correct current output;
NB: For other Temperature values, expected current output is based on:
mA = {(16/100) x Temperature value} + 4mA
8
Specifications
Model
ECTEMPXTR
Range
0 TO 100
o
C
Accuracy
±
0.5
o
C
Calibration
1 pt
Input
2-wire Pt 100
Output
4-20 mA
Operating
Voltage
Voltage
DC 12 V to 24 V
Load
100 Ohms max. for 12 V;
600 Ohms max. for 24V
Housing
77 x 77 x 28 mm, field mountable
9
Appendix 1
Connecting Amp Meter for Calibration
Figure 3 - Method One
Figure 4 - Method Two
10 Ordering Information
pH
Item
Cat Code
pH Transmitter
ECPHXTR
Combination pH Electrode, General, integral 5m cable
ECARTSO05B
Combination pH Electrode, w/PMP, integral 5m cable
ECARGTSO05B
Dissolved Oxygen
Item
Cat Code
Dissolved Oxygen Transmitter
ECDOXTR
General Purpose D.O. probe, 0.5 – 40 ppm, Industrial,
integral 5m cable
integral 5m cable
ECDOGEN
General Purpose D.O. probe, 0 – 10 ppm, Industrial,
integral 5m cable
integral 5m cable
ECDOTPll
ORP
Item
Cat Code
ORP Transmitter
ECORPXTR
Combination Platinum ORP Electrode, w/PMP,
integral 5m cable
integral 5m cable
ECHTPTTSO05B
Combination Gold ORP Electrode, w/PMP, integral
5m cable
5m cable
ECHTAUTTSO05B
Conductivity
Item
Cat Code
Conductivity Transmitter
ECCONXTR
2-Pin SS,k=1.0, integral 3m cable
ECCONSEN46
Temperature
Item
Cat Code
Temperature Transmitter
ECTEMPXTR
Pt 100 probe, SS316
ECPT10001M or
ECPT10005M
Power Supply
Item
Cat Code
120V Power Supply
EC-120-XTR
220V Power Supply
EC-220-XTR