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Manometer with Both Positive and Negative Pressure Display

-2,000 to 2,000 mbar, Differential, Gauge


Item# HHP91

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $294.73
5-9 $279.99
10-24 $274.10
25-49 $262.31
50-99 $256.42
100+ $250.52

In stock

Lead Time (If not in stock): 10 weeks
-2,000 to 2,000 mbar, Differential, Gauge HHP91 HHP91
  • Eight User-Selectable Units: psi, mbar, kg/cm2, mmHg, inHg, mH2O, inH2O, atm
  • Measures Up to ±2000 mbar (±29 psi)
  • Auto Shut-Off Function Prolongs Battery Life
  • Built-In Tilt Stand
  • Reading Hold
  • Stores Minimum and Maximum Readings with Push-Button Recall
  • Compatible with Air or Non-Corrosive and Non-Ionized Gases and Liquids

HHP91 Model Options

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Pressure Type
Accuracy Class
Accuracy Value
Number of Digits

  • Battery Size 9V
  • Batteries Included Yes
  • Battery Type Alkaline
  • Display Digit Height 15 mm
  • Maximum Ambient Humidity <80% RH (non-condensing)
  • Maximum Ambient Temperature 50 {C} (122 {F})
  • Measurement Mode Auto off (after approx. 20 min)
  • Measurement Type Pressure
  • Number of Batteries 1
  • Power Source Battery
  • Pressure Units psi
  • Sample Rate Approximately 0.8 seconds
Model HHP91 is a precision manometer for automotive, HVAC, laboratories, and general industrial applications. The unit comes complete with a built-in sensor with dual inputs for gage or differential measurements. It is compatible with air or non-corrosive and non-ionized gases and liquids. Either port measures the full range. P1 is positive with increasing pressure, P2 is negative with increasing pressure. Eight selectable pressure ranges make this instrument compatible with all measuring systems. The readings are easy to read, displayed in large 15 mm (0.6") high digits.

psi, mbar, kg/cm2, mmHg, inHg, mH2O, inH2O, atm
Functions: Auto off (after approx. 20 min), reading hold, min and max
Accuracy: 2% FS, 23 ±5ºC, includes linearity, repeatability and hysteresis
Operating Temperature: 0 to 50ºC (32 to 122ºF)
Operating Humidity: <80% RH (non-condensing)
Power: 9V alkaline battery (included)
Sampling Time: Approximately 0.8 seconds
Pressure Ports: Quick disconnect for 3 to 4 mm ID tubing
Meter Dimensions: 185 H x 78 W 38 mm D (7.2 x 3.0 x 1.4")
Meter Weight: 345 g (0.8 lb)
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