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AM1710 Secondary Reference PRT User's Guide
3 General Operations
3.1 Connecting to the readout device
The AM1710 is equipped with a four-wire cable (see Figure 1).
Four lead wires are used to cancel lead wire resistance. For best
results, the readout device should be equipped to handle four-
terminal resistors. The lead wires can be distinguished by
insulation colors. Lead wire pairs attached to each end of the
sensor are identified by red/black and white/blue insulation.
White
Blue
3.2 Drive Current
AccuMac recommends 1mA as drive current to ensure the best
measurement.
3.3 Stability of Readings
To achieve the best accuracy, allow sufficient time for PRT to
stabilize before taking the readings.
3.4 Immersion Requirements
Stem effect can cause measurement errors due to heat lost or
gained by the sensing element through the thermometer stem. To
minimize the error, appropriate immersion depths are required. A
practical way to determine the minimum immersion depths is to
Rev. 201803V1
Figure1
Red
Black
5/10
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