Operating instructions

8 - 6
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.