HD780: Digital Manifold/Pressure Gauge


  • Dual differential inputs for pressure and temperature
  • Displays 5 types of pressure units
  • For use with R22 and R410A refrigerants
  • Standard 1/4 NPT male flare fittings
  • Large backlit LCD displays P1, P2, P1-P2, T1, T2, T1-T2, Ambient Temperature, plus Min/Max/Avg
  • Dual Type K inputs with Electronic Offset adjustment to compensate for thermocouple differences
  • Large multi-line backlit LCD display
  • Data Hold plus Auto power off
  • Complete with two heavy duty pressure hoses, protective rubber holster, two Type K temperature clamp probes, two general purpose Type K bead wire temperature probes, Universal AC adaptor with plugs (US, EU, UK, AUS), 9V battery, and hard case
  • English Datasheet
  • English User’s Manual

Available on back-order

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Dual-Input Heavy-Duty Pressure/Type-K Temperature Meter

Extech’s Heavy duty Digital Manifold/Pressure Gauge simultaneously measures suction line or liquid line pressure and line temperature to calculate and display superheat and sub cooling for A/C units. It also has dual inputs measuring differential pressure (P1-P2) and Type K temperature (T1-T2). For use with R22 and R410A refrigerants. Included are heavy duty connection hoses, Type K Temperature Clamp probe, and bead wire Temperature probe.

Pressure/Vacuum Range Resolution Basic Accuracy
psi -14 to 500psi 0.1psi ±1psi
bar -0.96 to 34.47bar 0.01bar ±0.1bar
kPa -96 to 3447kPa 1kPa ±7kPa
inHg -28 to 999.9inHg 0.1inHg ±2inHg
cmHg -72 to 2585cmHg 1cmHg ±5cmHg
Temperature (Type K) -76°F to 999.9°F (-60°C to 537.0°C) 0.1°F/°C ±(0.15%rdg 1.8°F/1°C)
Temperature (Ambient – NTC) 32.0°F to 122.0°F (0°C to 50.0°C) 0.1°F/°C ±2°F/1°C
Maximum Overload Pressure 800psi ±(4.0% 20d)
Dimensions 8.3 x 3.1 x 2″ (212 x 78 x 51mm)
Weight 11.9oz (338g)