TB 9-6625-135-40
5. Accessories Required. The accessories listed in table 3 are issued as indicated in
paragraph 4 above and are used in this calibration procedure. When necessary, these items
may be substituted by equivalent items, unless specifically prohibited.
Table 2. Minimum Specifications of Equipment Required.
Manufacturer and Model
Common Name
Minimum Use Specifications
(Part Number)
Range: 25 to 2500
Hewlett Packard, Model
Accuracy: 0.0125
3458A (3458A)
RESISTANCE
Range: Measure 5 m to 2.5
Guildline 6625A System
MEASUREMENT SYSTEM
Accuracy: Test Report of Standard
consisting of:
Resistors
6664B Scanner
6623-100 Range Extender
XHR7.5-130 Power Supply
1
STANDARD RESISTOR
Range: 1
L&N 4020B
Accuracy: Test Report
STANDARD RESISTOR 1
Range: 10
L&N 4025
Accuracy: Test Report
1
STANDARD RESISTOR
Range: 100
L&N 4030B
Accuracy: Test Report
THERMOMETER
Range: 0 to 100 C
Hart Scientific Model 1529 w/
Accuracy: 0.1 C or better
5627-12-M probe
(Chub 4)
Common Name
Description (Part Number)
25 to 2500 , 1 Watt rated, Clarostat, Model 240C (240C)
DECADE RESISTOR
POWER SHUNT
0.005 rated for 10 A dc, Empro 20 A to 100 mV
POWER SHUNT
0.025 rated for 10 A dc, Empro 20 A to 500 mV
0.22 rated for 10 A dc, Ohmite 0.22 , 100 W
POWER SHUNT
2.5 rated for 10 A dc, Ohmite 2.5 , 100 W
POWER SHUNT
6. Preliminary Instructions
a. The instruction 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
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 manufacturer's manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.