AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide Table of Contents Before you start ---- Warnings & Cautions ........................................................................ 2 1 Introduction................................................................................................................. 3 1.1 Main Application ................................................................................................ 3 1.2 Main Features...........................................
AM1860/1850 Standard Platinum Resistance Thermometer 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. 3. DO NOT submerge PRT handle when taking measurement. 4.
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide 1 Introduction 1.1 Main Application AM1860/1850 Standard Platinum Resistance Thermometer (SPRT) is an interpolating instrument converting temperature to resistance. It works together with readout device to measure temperature or change of temperature. It has wide applications for dry-wells or temperature baths. 1.2 Main Features Extreme low drift rate Metal sheathed Great reference thermometer for dry block calibrator 1.
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide 2 Specifications 2.1 Specifications Temperature Range Rtpw Resistance Ratio Drift at 0.01°C* Repeatability Thermal Shock Self-heating Measurement Current Sensor Length Insulation Resistance Sheath Material Dimension External Leads Termination Handle Dimension Calibration 1850: -200°C to 500°C 1860: -200°C to 670°C Nominal 25 Ω or nominal 100 Ω W(Ga)>=1.11807 W(Hg)<=0.844235 1850 ΔR(0.01°C ) <0.002 °C/100 hours at 500°C ΔR(0.01°C ) <0.
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide 3 General Operations 3.1 Connecting to the readout device The AM1860/1850 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 fourterminal 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.
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide minimize the error, appropriate immersion depths are required. A practical way to determine the minimum immersion depths is to change the depth gradually until the readings have significant changes after stabilization. Do not submerge PRT handle when taking measurement. 3.
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide 4 Care and Handling Guidelines 1. DO NOT subject the SPRT to any physical shocks and vibrations. a. When not using the SPRT, keep it in a place that’s not prone to drop, slam, bang, vibration or other strong physical contacts. Use a protective box or a carrying case whenever possible. b. When shipping the SPRT, use protective box and other protective packaging materials to minimize mechanical shocks as much as possible. c.
AM1860/1850 Standard Platinum Resistance Thermometer User’s Guide 5 Troubleshooting 5.1 Troubleshooting If the SPRT 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. Be sure to have the model number and serial number of your SPRT available. 5.2 Problem Causes and Solutions a. R0/Rtpw becomes higher significantly.
AM1860/1850 Standard Platinum Resistance Thermometer 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. The warranty period begins on the date of the shipment. Parts, product repairs, and services are warranted for 90 days.
