Pressure switch 89448-51010 for Toyota oil pressure sensor

performance parameter

There are many kinds of pressure sensors, and their performances are also quite different. How to choose a more suitable sensor and use it economically and reasonably.

1. Rated pressure range

The rated pressure range is the pressure range that meets the specified value of the standard. That is, between the highest and lowest temperatures, the sensor outputs a pressure range that meets the specified operating characteristics. In practical application, the pressure measured by the sensor is within this range.

2. Maximum pressure range

The maximum pressure range refers to the maximum pressure that the sensor can bear for a long time, and does not cause permanent changes in the output characteristics. Especially for semiconductor pressure sensors, in order to improve the linearity and temperature characteristics, the rated pressure range is generally greatly reduced. Therefore, it will not be damaged even if it is used continuously above the rated pressure. Generally, the maximum pressure is 2-3 times the maximum rated pressure.

3. Damage pressure

Damage pressure refers to the maximum pressure that can be applied to the sensor without damaging the sensor element or sensor housing.

4. Linearity

Linearity refers to the maximum deviation of the linear relationship between sensor output and pressure within the working pressure range.

5. Pressure lag

It is the difference of sensor output when the minimum working pressure and the maximum working pressure approach a certain pressure at room temperature and within the working pressure range.

6. Temperature range

The temperature range of pressure sensor is divided into compensation temperature range and working temperature range. The compensation temperature range is due to the application of temperature compensation, and the accuracy enters the temperature range within the rated range. The working temperature range is the temperature range that ensures the pressure sensor to work normally.

Technical parameters (range 15MPa-200MPa)

Parameter unit technical index parameter unit technical index

Sensitivity mV/V 1.0±0.05 sensitivity temperature coefficient ≤% f s/10℃ 0.03.

Nonlinear ≤% ≤%F·S ±0.02～±0.03 Working temperature range℃-20℃ ~+80℃

Lag ≤% ≤%F·S ±0.02～±0.03 Input resistance ω 400 10 ω

Repeatability ≤% ≤%F·S ±0.02～±0.03 Output resistance ω 350 5 ω

Creep ≤% f s/30min 0.02 Safety overload ≤% ≤%F·S 150% F·S

Zero output ≤% f s 2 Insulation resistance MΩ ≥5000MΩ(50VDC)

Zero temperature coefficient ≤% f s/10℃ 0.03 Recommended excitation voltage V 10V-15V.