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Connections
T24-TAe, T24-TAi
Power
Attach power supply wiring to the module as shown below:
Connect to a 3 Volt power supply or batteries.
This module is not reverse polarity protected!
The maximum voltage is 3.6 V!
For battery information please refer to
Sensor
Voltage input connected as follows:
The Pt100 probe can be connected in 2, 3 or 4 wire measurement configurations.
2 Wire
The simplest resistance thermometer configuration
uses two wires. It is only used when high accuracy is
not required, as the resistance of the connecting wires
is added to that of the sensor, leading to errors of
measurement. This configuration allows use of
100 meters of cable.
Mantracourt Electronics Limited
+ 3V Supply
0V Supply
Appendix D – Battery Selection
SHLD
D-
S-
S+
D+
SHLD
D-
S-
S+
D+
3 Wire
In order to minimize the effects of the lead resistances,
a three-wire configuration can be used. Using this
method the two leads to the sensor are on adjoining
arms. There is a lead resistance in each arm of the
bridge so that the resistance is cancelled out, so long
as the two lead resistances are accurately the same.
This configuration allows up to 600 metres of cable.
106
SHLD
D-
S-
S+
D+
T24 Telemetry User Manual
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