NPFC - MIL-T-19646

THERMOMETER, GAS ACTUATED, REMOTE READING

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Organization: NPFC
Publication Date: 8 February 1990
Status: active
Page Count: 47
scope:

This specification covers environmentally hardened thermometers which utilize an elastic element to measure the pressure within a gas filled closed system (thermal system) and convert this pressure to an analog temperature indication on a circular dial. Remote reading is accomplished by connecting the analog temperature indicator to the thermometer bulb by a specified length of capillary tubing. The gas actuated thermometer bulb is configured for either direct immersion or insertion into a thermowell.

Gas actuated thermometers shall be classified according to the following variables, as specified (see 6.2):

(a) Sensor configuration (see 1.2.1).

(b) Range (see 1.2.2).

(c) Dial size (see 1.2.3).

(d) Capillary tubing length (see 1.2.4).

The sensor configuration shall be designated by two symbols; the first symbol shall designate the class and the second symbol the subclass. The class, designated by the letter A, B, or C, identifies the sensor type and mounting method (see 3.3.2.1.1). The subclass, designated by a number, identifies the physical dimensions of the individual sensors. Class A has only one subclass and shall be designated as A1. Class B has six subclasses as shown on figure 1. Class C has four subclasses as shown on figure 2. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

The range shall be designated by the sequence of symbols listed in table IV. The range shall be selected for a particular sensor configuration class only if that range is specified for the particular sensor configuration class in table IV.

The dial size shall be designated by one of the following symbols:

Dial size Symbol 3-½ 3 4-½ 4 8-½ 8

The capillary tubing length selected is designated by its numerical value in units of feet (see 3.3.2.2).

A specification-based PIN to identify sensor configuration, range, dial size, and capillary tubing length is included in section 6 (see 6.10).

intended Use:

This sensor configuration is intended for the application in which the sensor is installed in a mounting bracket. The mounting bracket is constructed in accordance with NAVSEA 810-1385917. This... View More

Document History

MIL-T-19646
February 8, 1990
THERMOMETER, GAS ACTUATED, REMOTE READING
This specification covers environmentally hardened thermometers which utilize an elastic element to measure the pressure within a gas filled closed system (thermal system) and convert this pressure...
April 16, 1970
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
October 23, 1967
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
July 10, 1967
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
April 3, 1966
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
May 10, 1965
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
November 11, 1964
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
May 28, 1964
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
July 10, 1959
THERMOMETER, GAS ACTUATED, REMOTE READING
A description is not available for this item.
December 5, 1956
THERMOMETER, GAS ACTUATED, REMOTE READING
This specification covers distant reading, seu-indicating dial thermometers of the mechanical gas filled type for those applications and temperature ranges specified herein.

References

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