Elitech PG-30 Blue Digital Vacuum Low Pressure Gauge for HVAC Refrigerant with Backlight -14.5~500 PSI 1/8 NPT

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pressure guage


PG-30 digital pressure gauge can test pressure and corresponding evaporation temperature, with backlight, manual calibration, automatic shutdown, units switch, low power alarm, refrigerant types selection and other functions. Battery life up to six months, used for refrigerant and maintenance, pressure vessels, pressure monitoring.


  1. Unit conversion between MPa, kPa, bar, psi, kg/m2,cmHg. Pressure range is -14.5~500psi (-0.1~3.4MPa), accuracy: ±0.5%FS, resolution: 0.5psi.
  2. Automatically perform pressure/temperature calculations for up to 91 different refrigerants, including R134A, R410A, and R22 refrigerants and etc.
  3. The air pressure gauge's digital backlight display provides clear results even in the night. The 4-digit LCD display allows for easy point-of-reference pressure readings.
  4. Powered by a CR2450 battery and works around 6 months. The backlight automatically shut down in 6 seconds, power-saving and longer using time.
  5. Displays screen alarm indication when over range; adjustable temperature unit: Celsius or Fahrenheit; rugged housing with registration for reliable service.

Pressure Measuring Range: -0.100 ~ 5.000MPa
Operating Temperature and Humidity: 10°C ~60°C; 35% ~ 85%RH
Resolution: Pressure: 0.001MPa; Temperature 0.1°C
Accuracy: Pressure : ±5%FS (22°C ~ 28°C); Temperature: ±1°C
Battery Life: Six Months
Power supply: 3V CR2450 button battery
Sampling Period: 1.2s
Battery Indicator: displays 'LOB' at low battery
Display: 30mm*17mm LCD/green back-light, auto-off after 6s
Measurement Units: MPa, kPa, bar, psi, kgf/cm2, mmHg
Out-of-Range Alarm: pressure: FULL

Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution, Pressurized refrigerant may be present in hoses. Point hoses away from you and anyone nearby.

General Operation:
In power-off mode, press and release Light/Power button to turn on the gauge and display current pressure. Press and hold Light/Power for 3 seconds to turn it off. It will be auto-off after 15 minutes of inactivity.
In power-on mode, press and release Light/Power button to turn on backlight. It will be auto-off after 6 seconds of inactivity.
3.Max and Min Memory and Clear
Press and release Up/Set or Down/Zero button to display Max or Min values. Press and hold Up/Set or Down/Zero button for 3 seconds to clear the displayed Max or Min.
Press and hold Down/Zero for 3 seconds to zero. It will display and then 0.000 after 3 seconds. Press and hold the button again for 3 seconds to display current relative pressure.
Press and hold Up/Set button for 3 seconds to enter refrigerant types selection. Press Light/Power in 3 seconds, °C will flash to indicate temperature units shift. Press Light/Power in 3 seconds, MPa will flash to indicate pressure units shift. Press Light/Power in 3 seconds to exit. Use Up/Set or Down/Zero for selecting specific refrigerant type or temperature/pressure unit.



Generally it takes about 24 hours to proceed with the order and 2-5 working days in shipping. We offer you FREE SHIPPING if you chose normal shipment. FYI, we offer expedited or overnight shipping. You can choose it when you are about to check out.


Generally, the products will be shipped by DHL express shipping if you are from another countries. It is safer and faster. It takes about 3~5 working days for you to receive the products you ordered.

Returns & Exchanges

We’re bummed if you're not 100% satisfied with the items you received, and we gladly accept returns within 3 month days of receipt for most items in new condition.

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