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   Category: our product range >> Superheat & Subcooling >> Superheat Accessory Charging Kit - Code : ASH3
Superheat Accessory Charging Kit - Code : ASH3

Measure suction line pressure and temperature to calculate superheat for R-22 or R-410A. Attach to HS & LT Series meters, EHDL1 or Use with DL3 to log pressure, Temperature or Superheat:


  • Display pressure in PSI or kPa.
  • Display temperature in F or C.
  • Select R22 or R410A.
  • Auto-off can be disabled for data logging.
  • Includes "T" Piece Fitting
  • Accepts all K-type thermocouples.
  • ATC1 pipe clamp T/C included.
  • LED indicates when readings are stable.
  • Thermocouple calibration pot.
  • Push-button atmosphere pressure calibration.


  • Operating environment: 32F to 122F; 0C to 50C at <75%RH Allow ~5 min. for ASH3 to come to ambient temp.
  • Storage environment: -4F to 140F; 0C to 50C at <80%RH with battery removed from meter.
  • Battery life: 25 hours typical. No measurable current draw when in "off" position.
  • Low battery indication: Red LED lights
  • Battery: 9V. Auto off: Approx. 15 minutes
  • Overloads: The ASH3 outputs 3.4V when temperature or pressure is outside of their working range (overloaded). For ranges below 3400mVDC, the normal overload symbol will be displayed on the meter (OL or depending in the meter). For ranges above 3400mVDC, reading displayed will be approximately 3.4VDC.

Pressure and Vacuum

  • Working range (pressure): 0 to 500 psi; 0 to 4000 kPa
  • Maximum displayed pressure: 800psi
  • Working range (vacuum): 29Hg vac. to 0; 74cmHg vac. to 0
  • Vacuum will show up as negative value on meter.
  • Resolutions: 0.1psi, 0.1Hg vac.
  • Accuracy:
    @ 50F to 115F ambient, 1 psi, 6.9 kPa
    @ 32F to 122F ambient, 2 psi, 13.8 kPa
    Sensor breakdown pressure: 1300psi


  • Range (temperature): -40F to 400F; -40C to 204C
  • Resolutions: 0.1
  • Sensor type: k-type thermocouple
  • Pipe clamp thermocouple accuracy: 4F or 0.75%, whichever is greater, -30F to 200F
  • System accuracy: 1F; 0.06C @ 73F 5F after ice water calibration (see Field calibration).


  • Range (temperature): 0F to 80F; 0C to 27C
  • Resolutions: 0.1
  • System Accuracy: 1F; 0.06C @ 73F 5F after calibration (see Field calibration).
ATC1 - Pipe Clamp Thermocouple

What's Included

  • ATC1 - Pipe Clamp Thermocouple