TB 9-6685-322-50
Table 2. Minimum Specifications of Equipment Required
Common name
Minimum use
Manufacturer and model
Item
(official nomenclature)
specifications
(part number)
A1
HIGH TEMPERATURE BATH
Range: Ambient to 250 oC Hallikainen, Model
(THERMOMETER CALIBRATOR
1128CS2 (7907725)
Hallikainen, Model 1283A5S2
A2
LOW TEMPERATURE BATH
Range: -39 C to ambient
(7907733) or Neslab, Model
(CALIBRATION BATH
LT-50DD (7916963)
ASSEMBLY)
Scientific Glass, Model
A3
STANDARD THERMOMETER
Range: -38 to 100 C
T-3780 (7910479)
Accuracy: 0.5 C
Range: 100 to 200 C
Accuracy: 0.1 C
Range: 200 to 250 C
Accuracy: 0.3 C
5. Accessories Required. The
accessories listed in
table 3 are issued with the
secondary
reference calibration standards set and are to be used in this calibration procedure. When
necessary, these items may be substituted by equivalent items unless specifically
prohibited.
Table 3. Accessories Required
Item
Common name
Description (part number)
B1
CALIBRATION
7911944
THERMOMETER KIT
CONSISTING OF:
TELESCOPE ADAPTER
Aluminum plate 2 1/2 x 1 1/2 x 3.8 in. (7911953)
EXTENSION CLAMP
A.H. Thomas, No. 3204P (7911948)
CLAMP HOLDER
A.H. Thomas, No. 3214-25 (7911951)
ADJUSTABLE PLATE
Aluminum plate 2 x 1 x 1/4 in. (7911952)
RIGHT ANGLE PRISM
Edmund Scientific Co., No. 3169 (7911949)
PRISM HOLDER
Fabricated from aluminum to hold and align prisms
(7911945)
ROD COLLAR
Gaertner, No. M330 (7911946)
SUPPORT STAND
A.H. Thomas, No. 3294-P (7911950)
PRISM HOLDING TAB
Aluminum 1/23 in. thick x 5/16 in. wide and 1 13/16 in. long
TELEMICROSCOPE
Gaertner, No. M101A7 (7911947)
B2
CONTAINER
Approximately 4 in. in diameter and at least 8 in. in height,
able to withstand -3C to +250C
SECTION III
6. Preliminary Instructions
a. The Instructions outlined in this section are preparatory to the calibrate 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
name and item identification number as listed in tables 2 and 3. For the identification of
equipment referenced to item numbers prefixed with A, see table 2, and for prefix B, see
3