AM1750 Secondary Reference PRT User’s Guide Table of Contents Before you start ---- Warnings & Cautions ................ 2 Introduction ........................ 3 Main Application ....................3 Main Features ..................... 3 Calibrations ......................3 Specifications ......................4 Specifications ...................... 4 General Operations ....................5 Connecting to the readout device ................
AM1750 Secondary Reference PRT User’s Guide Before you start ---- Warnings & Cautions Warnings: Follow these guidelines to avoid personal injury: 1. Only use this instrument in the manufacture specified temperature range. 2. The handle of this instrument can become hot when it is used to measure high temperatures for extended periods of time.
AM1750 Secondary Reference PRT User’s Guide 1 Introduction 1.1 Main Application AM1750 Secondary Reference Platinum Resistance Thermometer (PRT) is an interpolating instrument converting temperature to resistance. It works together with a readout device to measure temperature or change of temperature. It has wide applications for dry- wells or temperature baths.
AM1750 Secondary Reference PRT User’s Guide 2 Specifications 2.1 Specifications Temperature Range 1750-12: -200 °C to 670 °C 1750-20: -200 °C to 670 °C Nominal 100 Ω Resistance at 0 °C 0.003925 Ω/ Ω/°C Temperature Coefficient Accuracy ±0.025 °C at -196 °C ±0.015 °C at 0.01 °C...
3 General Operations 3.1 Connecting to the readout device 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.
3.6 Over Heating The sensing element of AM1750 PRT is sealed inside an Inconel sheath to ensure the best stability and repeatability. The seal can be breached if the PRT is over heated for an extended period of time.
AM1750 Secondary Reference PRT User’s Guide 4 Care and Handling Guidelines 1. DO NOT subject the PRT to any physical shocks and vibrations. a. When not using the PRT, keep it in a place that’s not prone to drop, slam, bang, vibration or other strong physical contacts.
AM1750 Secondary Reference PRT User’s Guide 5 Troubleshooting 5.1 Troubleshooting If the PRT functions abnormally, it could be caused by several possible problem conditions that are described in this section. Try the solutions recommended and if the problems are still not solved, contact manufacture for warranty or repair service.
AM1750 Secondary Reference PRT User’s Guide 6 Limited Warranty & Limitation of Liability Each product from AccuMac Corporation is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is 1 year for the Platinum Resistance Thermometer.