9190A Input Panel Calibration; Fundamentals; Terminology - Fluke 9190A Operator's Manual

Ultra-cool drywell field metrology well

Table of Contents

9190A Input Panel Calibration

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.

Term

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

The temperature probe that is placed in the insert front hole at 0 mm. (Probe is

Primary Reference

bottomed out in the front-insert hole.) See Figure 4-2.

Secondary PRT or

The temperature probe that is placed in the insert front hole at 30 mm. The

Secondary Ref

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

The difference in temperature at one height in the UUT temperature block to a

Error or Uniformity

different height in the temperature block along the z axis. The Axial Uniformity is

Error

referred to as the Vertical Gradient.

Note

Table 4-10. Calibration Terminology

Definition

Calibration