AccuMac AM1730-12 사용자 설명서 - 페이지 6
{카테고리_이름} AccuMac AM1730-12에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. AccuMac AM1730-12 10 페이지. Secondary reference platinum resistance thermometer
페이지 인쇄AM1730 Secondary Reference Platinum Resistance Thermometer
User's Guide
3 General Operations
3.1 Connecting to the readout device
The AM1730 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
Figure1
Red
Black
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