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%FS

Linearity/hysteresis:± 0.1% FS of full scale

Limit maximum pressure:6Psi

Repeatability: ±0.25%FS

Functions：

✓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 Manometer

1* Protective bag

1* Small screwdriver

2* 1.5V Battery

1* 6 Languages manual

After-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.

Air Pressure Meter, Manometer HVAC Dual-Port Manometer±13.79Kpa/2.000Psi ±0.3% Digital Manometer with 11 Selectable Units,Data Logging and Zeroing AP-189A

Description

Common Questions