TECHNICAL SPECIFICATIONS
Operating environment: 32ºF to 122ºF; 0ºC to 50ºC at <75%RH
Allow ~5 min. for ASX24 to come to ambient temp.
Storage environment: -4ºF to 140ºF; -20ºC to 60ºC at <80%RH with battery removed.
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 ASX24 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”). For ranges above 3400mVDC, reading displayed will be approximately 3.4VDC.
Stated Accuracy: at 73°F ± 9°F (23°C ±5°C) <90% R.H.

Compatible Refrigerants
Built-in Pressure/Temperature Charts: R134A, R404A. PT charts for 12 refrigerants when used with HVAC Guide® System Analyzer.

Temperature
Range (temperature): -40ºF to 400ºF; -40ºC to 204ºC
Resolutions: 0.1º
Sensor type: k-type thermocouple
Pipe clamp thermocouple accuracy: ±4ºF (±2°C) or ±0.75%, whichever is greater, -30ºF to 200ºF (-34°C to 93°C)
System accuracy: ±1ºF;±0.06ºC @ 73ºF ± 5ºF after ice water calibration (see Field calibration).

Pressure and vacuum
Working range (pressure): 0 to 500 psi; 0 to 4000 kPa
Max displayed pressure: 800psi (5500 kPa)
Working range (vacuum): 29”Hg vac. to 0; 74cmHg vac. to 0
Vacuum will show up as negative value on meter.
Resolutions: 0.1psi or kPa, 0.1”Hg or cmHg vac.
Accuracy: 0 to 200 psig, ±1 psi, 0 to 1378 kPa ±6.9 kPa; 200 to 500 psig, 0.3% ±1 psi, 1378 to 3447 kPa 0.3% ±6.9kPa
Sensor breakdown pressure: 800psi (5500 kPa)

Superheat
Range (temperature): 0ºF to 80ºF; 0ºC to 27ºC
Resolutions: 0.1º
System Accuracy: ±1ºF @ 73ºF ± 5ºF (±0.06ºC @ 23°C ±3°C) after calibration (see Field calibration).

Subcooling
Range (temperature): 0ºF to 80ºF; 0ºC to 27ºC
Resolutions: 0.1º
System Accuracy: ±1ºF @ 73ºF ± 5ºF (±0.06ºC @ 23°C ±3°C) after calibration (see Field calibration

Product Family