TB 9-6625-126-24
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Hewlett Packard, Model
Range: Approximately 70-250 Ohms (100 Ohms nominal)
3458A (3458A)
Accuracy: See THERMOMETER
THERMOMETER
Range: -25 to 400 C
ASP Sensing WSP500
Combined error must not exceed 0.05 C
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufactures manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
WARNING
Severe burns or fire can result if safety precautions are not
observed. The TI can reach temperatures in excess of 670 C
(1120 F). DO NOT touch the well access, top sheet metal,
inserts or probes until it is certain that temperatures have
reached a safe level. The air over the well can be extremely hot.
The temperature displayed on the TI is the temperature of the
well. It may take several minutes after entering a new
temperature for the TI to arrive at a safe temperature. Probes
and inserts may be hot and should only be removed when the
instrument has reached temperatures below 50 C (122 F).