Digital Manometer AR1890 www.perfectprime.com for product register and warranty Customer Service: cs@perfectprime.
Contents 1. Overview---------------------------------------------------------------------------------------------3 2. Performance Index--------------------------------------------------------------------------------3 3. Buttons Description-------------------------------------------------------------------------------4 4. Display Description--------------------------------------------------------------------------------4 5.
1. Overview The meter can measure differential pressure/positive pressure/negative pressure with very high resolution (more detailed results are shown).There are 11 units can be selected: 1. inH2O 5. kPa 9. ftH2O 2. psi 3. bar 6. inHg 7. mmHg 10. cmH2O 11. kgcm 4. mbar 8. ozin2 With a simple hose connection device equipped，it can be used for: 1. 2. 3. 4. 5. testing ventilation air conditioning system spot check air conditions of a room any gas pressure system troubleshooting.
3. Buttons Description The meter has six buttons: 1. UNITS 2. DIF 3. HOLD 4. ON/OFF A. REC B. BACKLIGHT 4. Display Description 1. Hold Function 2. Differential mode 3. Primary Data Screen 4. Record Mode 5. MAX/MIN/AVG 6. Low Battery Indicator 7. Pressure Unit Indicator 8.
. Resolution And Range of Units Function Range Resolution Function Range Resolution inH2O ±55.40 0.01 Ozin2 ±32.00 0.01 Psi ±2.000 0.001 ftH2O ±4.612 0.001 Mbar ±137.8 0.1 cmH2O ±140.6 0.1 kPa ±13.79 0.01 Kgcm2 ±0.140 0.001 inHg ±4.072 0.001 Bar ±0.137 0.001 mmHg ±103.4 0.
. Operation 1. ON/OFF button: -Press the ON / OFF button to turn on/off manometer. -When turned on, the screen will be displayed for about two seconds and the normal measurement mode will appear afterwards. 2. Clearance button: -If there is no input dierential pressure, instrument will not be cleared by itself. -When manually clearance is needed, press the HOLD button for about five Seconds, -->the screen will show ----it will be cleared later. 3.
. Error Codes An error message will appear on screen 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. 8. Battery Replacement When the battery power is low, “BAT” will display on the screen to remind you for replacing the 9V battery. 9. Safety Precaution And Consideration • If product operates abnormally, stop using. • Please test the manometer before usage to ensure proper operation.
