Contents (continued)
iii
4 Calibration ............................................................................................ 4-1
Introduction ........................................................................................................ 4-3
Temperature Source Calibration ........................................................................ 4-3
Fundamentals ................................................................................................. 4-4
Terminology .................................................................................................. 4-5
Calibration Equipment ................................................................................... 4-6
Temperature Source Specifications ............................................................... 4-6
Environmental Conditions ............................................................................. 4-6
Temperature Source Calibration Procedure................................................... 4-6
UUT and Equipment Setup ....................................................................... 4-6
As Found Data Collection ......................................................................... 4-8
Uniformity Alignment 1st Iteration ........................................................... 4-9
Uniformity Alignment 2nd Iteration ......................................................... 4-10
Uniformity Alignment 3rd Iteration .......................................................... 4-10
Accuracy Alignment ................................................................................. 4-12
As Left Accuracy ...................................................................................... 4-13
As Left Uniformity .................................................................................... 4-13
As Left Stability ........................................................................................ 4-14
Guard Bands .............................................................................................. 4-14
9190A Input Panel Calibration .......................................................................... 4-15
Fundamentals ................................................................................................. 4-15
Terminology .................................................................................................. 4-15
Calibration Equipment ................................................................................... 4-16
Environmental Conditions ............................................................................. 4-17
Input Panel Calibration Procedure ................................................................. 4-17
Input Panel Calibration/Tests .................................................................... 4-17
Readout Specifications .............................................................................. 4-17
Reference Accuracy Test .......................................................................... 4-17
UUT PRT 4-Wire Test .............................................................................. 4-18
UUT PRT 3-Wire Test .............................................................................. 4-19
Reference Accuracy Alignment ................................................................ 4-20
UUT Thermocouple Calibration ............................................................... 4-21
Thermocouple Accuracy Test ................................................................... 4-21
Thermocouple Reference Junction Accuracy Test .................................... 4-22
Thermocouple Reference Junction and Accuracy Alignment ................... 4-22
Thermocouple Accuracy Alignment ......................................................... 4-23
4-20 mA Input Calibration ........................................................................ 4-23
4-20 mA Accuracy Test ............................................................................ 4-23
24 V Source Test ....................................................................................... 4-24
4-20 mA Accuracy Alignment .................................................................. 4-24
5 Maintenance and Troubleshooting .................................................... 5-1
Introduction ........................................................................................................ 5-3
Maintenance ....................................................................................................... 5-3
Clean the Product .......................................................................................... 5-3
Moisture Removal ......................................................................................... 5-3
Clean the Insert .............................................................................................. 5-3
Change the Fuses ........................................................................................... 5-3
User-Replaceable Parts and Accessories ........................................................... 5-5
Troubleshooting ................................................................................................. 5-5