1 2 3 4 5
TX6373
+ V Supply
6 7 8
0 V Supply
TX9132
1 2 3 4 5
TX6373
+V Supply
6 7 8
TX9132
6.1
0.4 to 2 V Output Signal
A low impedance two-wire voltage
output signal requiring a separate
power supply to the sensor.
This can be derived from a TX9132
Trip Amplifier or TX9042 Programmable
Sensor Controller, when one of those is used
as the monitoring instrument.
This connection configuration works well up to about
2000 metres distance between the sensor and the monitoring
equipment.
Both the signal and the power supply to the sensor are being
carried in the common 0 V conductor so at some point –
influenced by the length of the cable and the resistance of the
cable cores – the current flowing in the 0 V conductor will impose
an unacceptable voltage error onto the signal.
This effect can be reduced on long distance connections by
increasing the size of the cable cores, or even better, running a
separate 0 V conductor to power the sensor enabling operating
distances up to 5000 metres.
INSTALLATION & OPERATING DATA
6 CONNECTIONS
TX6373
TOXIC GAS SENSOR/ TRANSMITTER
2 - WIRE CURRENT LOOP OPERATION
3 WIRE
4 WIRE
V
2 V
0.4
OUTPUT SIGNAL OPTIONS
1 2 3 4 5
Signal
0V
Supply
6 7 8
0
V
+
V
1 2 3 4 5
Signal
Supply
6 7 8
TX6373
TOXIC GAS SENSOR/ TRANSMITTER
4 - WIRE OPERATION
10/25
0.4 to 2 V signal
0 V
0.4 to 2 V signal
0 V
APPLICATION
GROUP I HAZARDOUS AREAS
ISSUE N 06/15