AccuMac AM1760-12 사용자 설명서 - 페이지 6

{카테고리_이름} AccuMac AM1760-12에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. AccuMac AM1760-12 10 페이지. Secondary standard platinum resistance thermometer

AM1760/1762 Secondary SPRT User's Guide

3 General Operations

The AM1760/1762 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 SPRT 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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