The Tester,pyrometer and Thermocoupl, cataloged under National Stock Number 6685-01-570-5253, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-570-5253 |
| Item Name | Tester,pyrometer and Thermocoupl |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| PD08WRGBGBEB35 | 3/9 Design control — primary reference U.S. Government activity |
| A-A-59954 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-01-570-5253 is a Tester,pyrometer and Thermocoupl, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-570-5253: Special Features: SHALL BE CAPABLE OF CONNECTING TOAND TESTING MOVEMENT THERMO-COUPLES; METER-MOVEMENT RESISTANCE TEMPERATURE DETECTORS (RTDS); SERVO THERMO-COUPLES ;AND COMMERCIAL THERMO-COUPLES TYPE K/T/J AND TF-30, CASE SHALL BE NO MORE THAN 20 INCHES LONG, 15 INCHES WIDE, AND 15 INCHES HIGH, CASE WILL HAVE A HANDLE ATTACHED AND A LOCKINGMECHANISM P ROVIDED, WEIGHT SHALL BE NO MORE THAN 35 POUNDS; INTERFACE SHALL BE PROVIDEDTHAT WILL DISPLAY VALUES BEING MEASURED OR SOURCED WHILE OPERATING BETWEEN 50 AND 100 DEGREES FARENHEIT, TEMPERATURE CALIBRATOR SHALL HAVE AN ON/OFF POWER SWITCH; BATTERY CHARGE INDICATOR; SOURCE/MEASURE SWITCH; OUTPUT VOLTAGE TUNING ABILITY FROM 0-35VOLTS DOWN TO .5MV OF THE DESIRED OUTPUT; MODE SELECT CAPABILITY; ABILITY TO TEST SINGLE OR DOUBLE RTD INDICATORS; ABILITY TO SOURCE 22.5 OR 28.5 VOLTS PLUS OR MINUS .5MV; ABILITY TO SIMULATE RTD AND SYNCHRO INDICATOR VOLTAGE RANGES, WILL INCLUDE 115/230VAC AT 60HZ POWER CABLE VAC; End Item Identification: GROUND SUPPORT EQUIPMENT. 0 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.