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Digital Hygrothermometer

NSN: 6685-01-382-4699 | Model: MODEL 989M

An instrument for measuring and indicating by digital display relative humidity and temperature of the surrounding atmosphere. Measurements are made by sensors generally mounted in a probe.

NSN Properties and Flags
NATO Stock Number
6685-01-382-4699
DEMIL
NO
Operating Tempurature Range
-20.0/+60.0 degrees celsius
Measurement Type
Digital
Measurement Range
+10.0/+100.0 percent relative humidity
Scale Accuracy Rating
Humidity accuracy +/- 2 percent rh, temp accuracy +/- 0.4 degrees f
Special Features
System consists of a humidity/temp indicator w/digital display and humidity/temp probe; probe connected to display by wire; dew point temp 0 degrees c to 40 degrees c below ambient temp; outputs: dewpoint temp 0 to 1 volt for -40 to 60 degrees c, ambient temp 0 to 1 volt for -40 to 60 degrees c, relative humidi type 0 to 1 volt for 0 to 100 percent rh; measurement of air dewpoint achieved by opto-electronic detection of dew formed on an electrically cooled, solid gold mirror, the temp of mirror is continually monitored and when dew forms the temp is stored in memory; probe houses the dew forming mirror and optics, also carries another transducer for measuring ambient temp; operates and displays continuously while cycling through dewpoint determination every 1/2 to 2 minutes; item will be used to maintain accuracy of the following systems-t.O. 33k6-4-2024-1, p/n 31061222-001, t.O. 33k5-4-84-1 p/n's ct428-7, rh200, htab176
Functional Description
The protimeter dewpoint meter uses analog and digital electronics to simplify accurate and stable hygrometric measurement; direct measurement of dewpoint temperature
Reference Data And Literature
T.O. 33k1-1-100
Relationship To Similar Equipment
Replaces the air force's current temp and humidity transfer standards used in pmel, p/n sa-760-a nsn 6625-01-144-1855 digital readout and p/n h5-3552-b (nsl) humidity probe

Pricing and Availability

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NSN 6685-01-382-4699 Datasheet

Supply Class (FSC):
Humidity Measuring And Controlling Instruments Temperature Pressure
Cross Reference:
  • MODEL 989M
  • DP989M
Cage Codes:
  • Protimeter Inc (CAGE 0WST2)
Schedule B & Trade:
  • Schedule B: 9027502000 (NAICS 334516)

    Thermal analysis instruments and apparatus

  • SITC: 87445

    Instruments and apparatus using optical radiations (ultraviolet, visible, infrared), n.E.S.

  • End Use: 21600

    Laboratory testing instruments

Identification:
HMIC

P - Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of federal standard 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

PMIC

A - Item does not contain precious metal.

ESD

A - No known electrostatic discharge (esd) or electromagnetic interference (emi) sensitivity.

ADPE

- Represents items with no adp components

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    058240 - Recording devices gauges/meters noi

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LCL:

    U - 50.0

  • LTL:

    F - 150.0

  • SHC:

    9 - Other or no special handling required (sh)

  • TCC:

    Z - No special type of cargo code applicable

  • WCC:

    72E - Engineer and material handling equipment, test/tool sets and equipment

NSN Management Codes:
  • SOS
    Flz
  • AAC
    J
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    --yrn-e
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $6,382.35 to $10,637.25..
Does NSN 6685-01-382-4699 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force
What is the NIIN of NSN 6685-01-382-4699?
013824699 or 01-382-4699
Does NSN 6685-01-382-4699 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 6685-01-382-4699?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Nov 03, 1993