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温度計 AccuMac AM1750のPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。AccuMac AM1750 10 ページ。 Secondary reference platinum resistance thermometer

AM1750 Secondary Reference PRT User's Guide

3 General Operations

The AM1750 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

AccuMac recommends 1mA as drive current to ensure the best

measurement.

To achieve the best accuracy, allow sufficient time for PRT to

stabilize before taking the readings.

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 change the depth

Rev. 201609V3

Figure1

Red

Black

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