Fluke 9190A - 9190 A Input Panel Calibration; Fundamentals; Terminology

Calibration
9190A Input Panel Calibration 4
4-15
9190A Input Panel Calibration
Note
For assistance with the calibration process, contact an Authorized Service
Center. See “How to Contact Fluke Calibration” in Chapter 1.
This procedure is to be considered a general guideline. Each laboratory
should write their own procedure based on their equipment and their
quality program. Each procedure should be accompanied by an uncertainty
analysis also based on the laboratory’s equipment and environment.
Figure 4-1 shows a flow chart of the calibration procedure.
Fundamentals
1. Only personnel that are qualified should calibrate the product.
2. Input panel calibration or temperature source calibration may be optional and
depends on UUT configuration and customer requirement.
Terminology
If the optional process version (-P model) was purchased, the 9190A has an additional
input panel that requires routine calibration. The optional process version (-P model) is
also referred to as the Input panel (see –P Option Panel in Chapter 2).
Table 4-10 lists the terms that are used throughout this procedure.
Table 4-10. Calibration Terminology
Term Definition
UUT Unit under test (for this procedure, this is the 9190A)
Test Sleeve Insert A cylindrical aluminum insert with drilled probe holes that fits into the UUT.
Readout Electronic device that can measure the probe resistance and convert it to
temperature.
PRT Platinum Resistance Thermometer (also referred to as a temperature probe).
Primary PRT or
Primary Reference
The temperature probe that is placed in the insert front hole at 0 mm. (Probe is
bottomed out in the front-insert hole.) See Figure 4-2.
Secondary PRT or
Secondary Ref
The temperature probe that is placed in the insert front hole at 30 mm. The
Reference Probe bottoms out at 30 mm in the rear insert hole. Figure 4-2.
As Found Data Data taken on the UUT before it is calibrated.
As Left Data Data taken on the UUT after it is calibrated.
SETPOINT Target temperature value the UUT controls to.
Axial Uniformity
Error or Uniformity
Error
The difference in temperature at one height in the UUT temperature block to a
different height in the temperature block along the z axis. The Axial Uniformity is
referred to as the Vertical Gradient.