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   Category: our product range >> Superheat & Subcooling >> Diagnostic Psychrometer with Target Superheat - Code :SRH2
Diagnostic Psychrometer with Target Superheat - Code :SRH2

Use on Fixed Orifice Systems.  The quickest way to check your "Target" Superheat on a Fixed Orifice System by measuring the outdoor dry bulb temperature and the indoor wet bulb temperature.


  • For temperature measurements select built-in thermistor or plug in thermocouple
  • Measures Wet bulb temp, dry bulb temp, dew point temp and %RH
  • Target Evap. Exit Temp and Target Superheat for "Fixed Orifice Systems"
  • Calculate target superheat amd target evaporator exit temperature
  • Rubber boot protection with magnetic hanger strap


  • Operating temperature: 0F - 122F at <75%RH
  • Storage Temperature: -4F to 140F (-20C to 60C) 0 to 80%RH with battery removed.
  • Low battery indication: The +- symbol is displayed when the battery drops below the operating level.
  • Battery Life: Approx. 150 hours (9V alkaline)
  • Auto Power Off: After 15 minutes of non-usage.

Temperature (K-Type Thermocouple):

  • Range: -58F to 1832F (-50C to 1000C)
  • Accuracy: 1F 50F to 113F (0.5C 10C to 45C), when calibrated to NTC at room temperature
    (0.1% rdg+2F) -58F to 1832F
    (0.1% rdg+1C) -50C to 1000C

Temperature (NTC):

  • Range: 32F to 140F (0C to 60C)
  • Accuracy:
    1F 50F to 113F (0.5C 10C to 45C)
    4F 32F to 50F and 113F to 140F
    2C 0C to 10C and 45C to 60C
  • Relative Humidity: 0% to 100% RH range
  • Accuracy: 2.5% at 77F (25C), 10% to 90%RH
    5% at 77F (25C) 0 to 10% RH & 90 to 100%RH
What's Included With SRH2

What's Included

  • ATA1 -Thermocouple with aligator clip
  • ATWB1 - Wet Bulb Thermocouple with aligator clip
  • Standard 9V battery
  • Operations manual