Digital Manometer,Dual Port Air Pressure Meter 6Psi Pressure Gauge HVAC Gas Tester with 11 Selectable Units,Data Logging and Zeroing AP-189A

The origin of the differential pressure gauge can be traced back to the late 17th century. Scientists have found through experiments that the pressure of liquid or gas increases with the increase of depth or height, which laid the foundation for the later research on hydraulics and gas mechanics. Until the mid-19th century, a liquid level gauge based on pressure changes was invented, which provided a theoretical basis for the invention of the differential pressure gauge.Differential pressure gauges are used to measure pressure differences between two locations and are commonly used in the following applications: flow measurement, air quality monitoring, level measurement, gas thermometry, and HVAC system control.Specifications:Accuracy: ±0.3%FSLinearity/hysteresis:± 0.1% FS of full scaleLimit maximum pressure:6PsiRepeatability: ±0.25%FSFunctions：✓Backlit✓Data Hold✓Auto Power Off---25 mins without operation✓MAX/MIN/AVG/DIF✓Zero Setting（Note: Differential pressure gauges require a long press on the hold button for five seconds to automatically zero the gauge.）Package Included:1* AP-189A Manometer1* Protective bag1* Small screwdriver2* 1.5V Battery1* 6 Languages manualAfter-sale Guarantee:Our handheld manometer comes with 365 days warranty and lifetime technical support, if it has any product's quality problem, just get in touch with us, we will solve the problem for you ASAP.

• 【High Accuracy Pressure Gauge】Manometer measurement range: +/-2.000psi; Accuracy: +/-0.3%FSO (at 25°C) ; Repeatability: +/-0.25%; Linearity/Hysteresis: +/-0.1%FSO; Limit maximum pressure:6Psi
• 【Multi-function manometer】Differential pressure, positive pressure, negative pressure, data hold, MAX/MIN/Average, large LCD backlight, low battery indicator, auto power off, DIF function
• 【Data Recording and Zeroing】This Manometer would be record data, You can see the MAX/MIN/AVG value in this time, which help to easier to analyze the data conveniently, press and hold “hold” for 5 seconds, you can zero the data
• 【11 selectable units Gas Pressure Tester】 Easily switch between psi, kPa, Kgfcm2, ozin2, Bar, mbar, inHg, mmHg, inH2O, ftH2O, cmH2O for a wide range of applications including flow measurement, air quality monitoring, liquid level measurement, gas temperature measurement and HVAC system control Can work like a pro
• 【Package Included】1*AP-189A manometer; 1* Protective pouch; 1* Small screwdriver; 2* 1.5V batteries; 1* 6-language manual; This high-quality manometer is suitable for gas measurement systems, air and ventilation system measurement, gas pressure system calibration and troubleshooting, HVAC, gas appliance repair and installation