Pressure: The force acting vertically and evenly over a unit area. In physics, this is called "pressure".
Range: i.e. the scale of pressure. Refers to the use of sensors to measure the amount of pressure.
Medium: refers to the object to be measured. Generally steam, water, oil, acid, alkali or mixture.
Accuracy requirements: 0.5%0.25%0.1%
Differential pressure: The difference between any two related pressures. It is usually indicated by D.
Absolute: The pressure at which the vacuum is used as a reference point. It is usually indicated by A.
Gauge pressure: The pressure that is greater or less than the atmospheric pressure with the atmospheric pressure as the reference point. It is usually indicated by G.
Normative pressure: The pressure indicated by atmospheric pressure is the norm, and the pressure greater than the atmospheric pressure is called positive pressure; Less than atmospheric pressure is called negative pressure
Relative pressure: The amount of pressure relative to the target (normative pressure).
Atmospheric pressure: Refers to the pressure at which it is atmospheric. The standard atmospheric pressure (1atm) is equivalent to the pressure of a column of mercury at a height of 760 mm
Vacuum: Refers to the state of pressure below atmospheric pressure. 1Torr=1/760 atm(atm)
Detection pressure scale: refers to the adaptive pressure scale of the sensor.
Acceptable Pressure: An acceptable pressure at which its performance does not degrade when rehabilitated to the test pressure.
Reciprocating accuracy (ON/OFF output): The pressure fluctuation value at the operating point obtained by removing the output and reversing the pressure value when the pressure is increased or decreased at a certain temperature (23°C).
Accuracy: At a certain temperature (23°C), when the zero pressure and the rated pressure are added, the value that violates the specified value of the output current (4mA, 20mA) is removed by the full-scale value. Units are indicated by %FS.
Linearity: The analog output changes linearly to the detected pressure, but is incorrect compared to an ideal straight line. The value that indicates this error as a percentage for the full-scale value is called linearity
Hysteresis (linear): Draw an ideal straight line between the output current (or voltage) value with zero voltage and rated voltage, find the difference between the current (or voltage) value and the ideal current (or voltage) value as an error, and then find the error value when the pressure rises and falls. The maximum value of the positive value of the above difference is the maximum value obtained by removing the positive value of the above difference with the current (or voltage) value of the full scale. Units are indicated by %FS.
Hysteresis (ON/OFF output): The value obtained by removing the difference between the pressure at the output ON point and the pressure at the OFF point is hysteresis by removing the full-scale value of the pressure
[$page] Non-corrosive gases: refers to substances (nitrogen, carbon dioxide, etc.) and inert gases (argon, neon, etc.) contained in the air
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