The Probe,humidity-Temperature, cataloged under National Stock Number 6685-01-666-6844, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Vaisala Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-666-6844 |
| Primary Part Number | HM70A0C1A0AA |
| Item Name | Probe,humidity-Temperature |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Vaisala Inc. |
| Status | ACTIVE |
| Operating Temp Range | -40.0 TO 60.0 CELSIUS DEGC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HM70A0C1A0AA PRIMARY | Vaisala Inc. (USA) |
| HMP76B | Vaisala Inc. (USA) |
NSN 6685-01-666-6844 is a Probe,humidity-Temperature, manufactured by Vaisala Inc., classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-666-6844 has 2 manufacturer part numbers on file: HM70A0C1A0AA (Vaisala Inc.), HMP76B (Vaisala Inc.).
Key specifications for HM70A0C1A0AA: Special Features: DESIGNED FOR DEMANDING HUMIDITY MEASUREMENTS IN HVAC APPLICATIONS;IDEAL FOR FIELD CHECKING CALIBRATION;RUGGED PROBE WITH LONG STAINLESS STEEL SHAFT;COMPATIBLE WITH ALL MI70 SERIES METERS: HM70, GM70, DM70 AND MM70;MEASUREMENT RANGE 0 TO 100% RH -50 DEGREES C TO 120 DEGREES C;MEASUREMENT ACCURACY AT TEMPERATURE +20 DEG C (68 DEG F);+/- 1.0% RH (0 TO 90% RH);+/- 1.7% RH (90 TO 100% RH);+/- 0.2 DEG C (0.36 DEG F) +/- 0.6% RH (0 TO 40% RH) T DEGC; Operating Temp Range: -40.0 TO 60.0 CELSIUS DEGC; Part Name Assigned by Controlling Agency: PROBE,HUMIDITY-TEMPERATURE; End Item Identification: HUMIDITY AND TEMPERATURE PROBE. 1 specification is 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.