Connections; T24-Safe, T24-Safi; Power; Sensor - Mantracourt T24-ACMi-SA User Manual

Connections

T24-SAfe, T24-SAfi

Power

Attach power supply wiring to the module as shown below:
+ 3V Supply
0V Supply
Connect to a 3 volt power supply or batteries.
This module is not reverse polarity protected! The maximum voltage is 3.6V!
For battery information please refer to Appendix D – Battery Selection

Sensor

Strain gauge connection is 4 wire as follows:
SHLD
-EXC
-SIG
+SIG
+EXC
The resistance of the strain gauge can be between 85 and 5000 ohms. The T24-SAf can support up to 4 350 ohm
strain gauges bridges attached in parallel (At the expense of reduced battery life).
The cable lengths between the T24-SA and the gauges should be kept below 3 metres and generally as short as
possible.
As the measurement is 4 wire the longer the cable the more inaccurate the measurement from the factory mV/V
calibration will be due to voltage drops in the cable.
The strain gauge measurement is bi-directional, i.e. tension & compression.
56
Mantracourt Electronics Limited T24 Telemetry User Manual