Common definitions and installation guidelines for pressure sensors

Common definitions of pressure sensors

Standard pressure: The pressure level expressed in atmospheric pressure. What is greater than atmospheric pressure is called positive pressure; Less than atmospheric pressure is called negative pressure.

Differential pressure (pressure difference): The relative difference between two pressures.

Absolute pressure (A): The pressure expressed as absolute vacuum.

Relative pressure (gauge pressure) (G): relative to standard pressure. Gauge pressure=absolute pressure - atmospheric pressure.

Atmospheric pressure: refers to the pressure generated by gravity on the air column on the Earth's surface. It is related to the altitude, latitude, and meteorological conditions at which it is located. 1 standard atmospheric pressure (1 atm) is equivalent to the pressure of a mercury column at a height of 760mm.

Vacuum: refers to the pressure state below atmospheric pressure. 1Torr=1/760 atmospheric pressure (atm).

Installation Guidelines for Pressure Sensors
　

Before installation, please carefully read the product manual and verify the relevant information of the product.

The sensor should be installed in a ventilated, dry, corrosion-free, and cool place. If installed outdoors, a protective cover should be added to avoid the normal use of the product being affected by sunlight and rain.

During installation, avoid strong impact and rod hitting.

Connect the wires according to the correct wiring method, while paying attention to protecting the outgoing wires of the sensor.

When cleaning the pressure interface and pilot hole of the sensor, trichloroethylene or alcohol should be injected into the pilot hole, gently shaken, and the liquid poured out multiple times.

It is prohibited to use any hard tool to penetrate the pressure hole to avoid damaging the sensitive core body.