Digital Hygrothermometer

Features

Specifications

• 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
• 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
• Federal Supply Class (fsc):
  Pressure, temperature, and humidity measuring and controlling instruments
• National Stock Number (nsn):
  6685-01-382-4699
• 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