SECTION II. EQUIPMENT REQUIREMENTS

SECTION I. IDENTIFICATION AND DESCRIPTION

SECTION III. CALIBRATION PROCESS FOR PRECISION RTD THERMOMETER, MODEL WSP500

Calibration Procedure For Rtd Thermometer, Asp, Model Wsp500 Page Navigation
2

TB 9-6625-109-40

SECTION II

EQUIPMENT REQUIREMENTS

4. Equipment Required. Table 2 identifies the specific equipment to be used in this

calibration procedure. This equipment is issued with Secondary Reference Calibration

Standards Set, NSN 4931-00-621-7878. Alternate items may be used by the calibrating

activity. The items selected must be verified to perform satisfactorily prior to use and

must bear evidence of current calibration. The equipment must meet or exceed the

minimum use specifications listed in table 2. The accuracies listed in table 2 provide a

four-to-one ratio between the standard and TI.

5. Accessories Required. The accessories listed in table 3 are issued as indicated in

paragraph 4 above and are used in this calibration procedure. The following peculiar

accessories are also required: Instrument controller and the PRTCoefficient.exe program,

which is available at the USATA home page website. When necessary, these items may be

substituted by equivalent items, unless specifically prohibited.

Table 2. Minimum Specifications of Equipment Required

Minimum use

Manufacturer and model

Common name

specifications

(part number)

MULTIMETER

Function: 4-wire Resistance

Agilent, Model 3458A (3458A)

Range: (100 Ohms nominal)

Accuracy: (15ppm of reading

+6ppm of range)

Accuracy: ≤ 0.005 C

THERMOMETER READOUT

Hart Scientific, Model 1590

THERMOMETER SPRT

Range: 30 C to 400 C

Rosemont, Model 162C or 162CE

Accuracy: 0.0125 C

Table 3.

Accessories Temperature Sources

Manufacturer and model

Common name

Purpose

(part number)

BATH, CONSTANT TEMPERATURE

+200 C

Hart Scientific, Model 6045/6050

BATH, CONSTANT TEMPERATURE

+400 C

Hart Scientific, Model 6045/6050

LOW TEMPERATURE BATH

30 C

Hart Scientific, Model 7341

LOW TEMPERATURE BATH

+30 C

Hart Scientific, Model 7341

TEMP STD MINI TPW

Triple-Point of Water

Hart Scientific, Model 9210

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