Portable Digital Manometer (Error Indication)

This Portable Digital Manometer (Error Indication) measures pressure up to 10 PSI and comes with a built-in low and high range error indicator and also has 11 different selectable units for measurement.




GAOTek Portable Digital Manometer (Error Indication) measures pressure up to 10 PSI with built-in low range and high range error indicator. It can measure the differential pressure, positive pressure and negative pressure. There are 11 units selectable as in H2O, psi, bar, mbar, kPa, in Hg, mmHg, ozin, fit H2O, kgcm and is equipped with a simple hose connection. It is used for testing ventilation and air conditioning system, spot check, clean room or for any gas pressure system troubleshooting. It is an indispensable testing tool for HVAC technician, maintenance engineers and science researchers. It is easy in operation and gives accurate reading.

Key Features

  • 11 selectable units for measurement
  • High accuracy and sensitivity
  • Max/min/average, and with a relative time
  • Gauge/differential pressure
  • Rugged aluminium case protects instrument from damage during transport/use
  • Large, easy to read display with backlight for use in dark areas
  • Zeroing, offset and data compensation
  • Low-battery display and automatic shutdown
  • Data hold and error code

Technical Specifications

Display Dual LCD
Accuracy ± 0.3% FSO 77 °F (25 ℃)
Repeatability ± 0.2 % (Max +/- 0.5 % FSO)
Linearity/Hysteresis ± 0.29 % FSO
Maximum Pressure 10 psi
Response Time 0.55 seconds typical
Low Battery indicator Yes
Over Range Indicator Err.1
Under Range Indicator Err.2
Operating Conditions 32 °F to 122 °F (0 °C to 50 °C)
Storage Conditions 14 °F to 140 °F (-1 °C to 60 °C)
Power Supply 1 x 9 V Battery (included) or External 9 V DC

Additional Information

Function Range Resolution
InH2O ± 24.08 0.01
Psi ± 0.870 0.001
mbar ± 60.0 0.1
kPa ± 1.771 0.001
mmHg ± 45.0 0.1
Ozin2 ± 13.92 0.01
ftH2O ± 2.006 0.001
Kgcm2 ± 0.060 0.001
Bar ± 0.060 0.001

 Meter Description:

  1. Units
  2. DIF
  3. HOLD
  4. On/Off
  1. REC
  2. Backlight


Display Description

  1. Hold Function
  2. Differential Mode
  3. Primary Data Screen
  4. Record Mode
  6. Low Battery Indicator
  7. Pressure Unit Indicator
  8. Relative Time Clock


Power Buttons: Press the ON/OFF button to turn power on or off. The meter will perform a short self-test when turned on. The meter defaults to the setting used during the last operation.

Clearance button: When turned on, if there is no input differential pressure, instrument will not be cleared by itself. Manually after clearing, press the HOLD button for about 5 seconds.

Unit button: Intermittently press the UNITS button there will revolve various units at the bottom of the screen. These units are as follows: bar, mmHg, Ozin2, Kgcm2, psi, inH20, inHg, cmH2O, mbar

DIF button: The pressure value when pressing the DIF button subtracting the pressure value before pressing.

Hold: Press the HOLD button momentarily to freeze the displayed reading the HOLD icon will appear on the upper left hand side of the display. Press the HOLD button gain to return to normal operation.

Record: The MAX/MIN mode allows the user to view only the highest (MAX), lowest (MIN) or average (AVG) readings with relative time stamp. Meanwhile the other function buttons are locked and cannot be operated. Long pressing the REC button for about 5 seconds will quit the recording mode.

Backlight Button: Pressing the backlight button will make it turn on. In dark environment can use this function. Press the backlight button again to turn OFF

Automatic Power Off Function: It will automatically power off if instrument not work more than 25 minutes. This can extend the battery life. If do not want to turn off the power, press hold button first, then press the ON/OFF button to start. LCD will show ON to close the function of automatic power off.

Error Codes: An error message will appear on the display if the meter fails an internal diagnostic test.

  1. Err 1: Pressure value is over the range
  2. Err 2: Pressure value is below the range


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