Environmental Conditions; Input Panel Calibration Procedure; Input Panel Calibration/Tests; Readout Specifications - Fluke 9190A Operator's Manual

Environmental Conditions

Laboratory environmental conditions required to complete this procedure:
•
Temperature range: 23 °C ±4 °C
•
Ambient relative humidity: below 60 %

Input Panel Calibration Procedure

Input Panel Calibration/Tests

• The inputs on the Input panel can be calibrated in any order. When a
calibration of a input is started, finish the procedure before another
input calibration is started.
• Before thermocouple tests are started, the instrument must be turned
on and the heat source set to 25.0 °C for at least 30 minutes to allow
sufficient time for warm-up.
• Thermocouple tests requires the technician to connect or disconnect
the voltage source and Type E TC probes.

Readout Specifications

See Chapter 1 for the Input panel specifications

Reference Accuracy Test

The Reference Accuracy Test is used to collect As Found, Alignment, and As Left data
(see Table 4-13).
All Reference Accuracy Tests are to be performed in Ohms.
Table 4-13. Reference Probe and UUT PRT Input Process
# Test Name
1

Reference Accuracy Test

2 UUT PRT 4-wire Accuracy Test
3 UUT PRT 3-wire Accuracy Test
4 Reference Accuracy Alignment
5 Reference Accuracy Test
6 UUT PRT 4-wire Accuracy Test
7 UUT PRT 3-wire Accuracy Test
1. Turn on the PRT reference input on the Calibrator (see "Reference Probe Input
Setup" in Chapter 2.
2. Set the instrument conversion type for the PRT reference input to resistance.
3. Connect the short (0 Ω).
4. Let readout stabilize for 70 seconds.
Notes
.
Note
Nominal(s) Ω
0, 25, 100, 200, 400 As Found/Alignment data - Reference
input
100 As Found data – UUT input
100 As Found data – UUT input
- Calculate offsets with Alignment data
0, 25, 100, 200, 400 As Left data – Reference input
100 As Left data – UUT input
100 As Left data – UUT input
Calibration
9190A Input Panel Calibration
Notes
4
4-17