The Hygrometer,digital, cataloged under National Stock Number 6685-01-498-8522, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-498-8522 |
| Primary Part Number | HMP234-A1A0A1AA12D1 |
| Item Name | Hygrometer,digital |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Vaisala Inc. |
| Status | ACTIVE |
| Sensing Element Type | THIN FILM CAPACITORTHIN FILM CAPACITOR |
| Display Digit Quantity | 33 |
| Style Designator | PANEL MOUNTED |
| Display Type | LIGHT EMITTING DIODE (L.E.D.).LIGHT EMITTING DIODE (L.E.D.). |
| Operating Temp Range | -40.0 TO 80.0 CELSIUS-40.0 TO 80.0 CELSIUS DEGC |
| Environmental Attribute Code | BAROMETERS & HYGROMETERS - CONSUMER PRODUCTS - NON-MERCURY ALTERNATIVEBAROMETERS & HYGROMETERS - CONSUMER PRODUCTS - NON-MERCURY ALTERNATIVE |
| Material | ALUMINUM ALLOY METER CASE |
| Switch Type and Quantity | 1 PUSH BUTTON1 PUSH BUTTON |
| Measurement Range | -40.0 TO 180.0 DEG CELSIUS AND -40.0 TO 180.0 DEG CELSIUS AND +0.0 TO 100.0 PERCENT RELATIVE HUMIDITY+0.0 TO 100.0 PERCENT RELATIVE HUMIDITY |
| Voltage Rating in Volts | 24.0 DC NOMINAL24.0 DC NOMINAL |
| 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 |
|---|---|
| HMP234-A1A0A1AA12D1 PRIMARY | Vaisala Inc. (USA) |
NSN 6685-01-498-8522 is a Hygrometer,digital, manufactured by Vaisala Inc., classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-498-8522 has 1 manufacturer part number on file: HMP234-A1A0A1AA12D1 (Vaisala Inc.).
Key specifications for HMP234-A1A0A1AA12D1: Sensing Element Type: THIN FILM CAPACITORTHIN FILM CAPACITOR; Overall Height: 65.0 MILLIMETERS NOMINAL65.0 MILLIMETERS NOMINAL MM; Display Digit Quantity: 33; Style Designator: PANEL MOUNTED. 10 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.