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MAN0443.P65 Issue 13 Aug 04
5701 Control System
05701-M-5001 A02279
CHAPTER 8 - SPECIFICATION
5.3
Catalytic Bridge Module
Drive:
Constant Current.
Current Adjustment:
Electronic in 1mA steps.
Current Adjustment Ranges:
Range 1
219mA to 283mA.
Range 2
166mA to 230mA.
Range 3
118mA to 182mA.
Range 4
70mA to 134mA.
Maximum Drive Voltage:
10V.
Protection:
Protected against short circuit and open
circuit.
Maximum Line Resistance:
40 ohms (including sensor) at 250mA.
Full Scale Signal Range:
15mV to 600mV.
Bridge Imbalance Default
Limits:
±
100mV from centre at 2V bridge voltage.
Adjustment:
Electronic adjustment of bridge balance
and signal gain.
Fault Detection:
Open circuit.
Short circuit single bead failure.
Over-Range Default:
+10% above fsd.
Under-Range Default:
-10% below zero.
5.4
4 - 20mA Input Module
Loop Powered Output
Voltage:
Isolated 20V
±
5% regulated, 25mA
maximum for loop powered devices.
Transmitter Supply Output
Voltage:
Filtered backplane 24V dc (500mA
maximum) for transmitters that require
separate power supplies.
Loop Protection:
Short circuit, open circuit voltage of
±
50V.
Configuration:
Sensor current sink or source.
