19 Technical Terms for Sensor Technical Parameters (I)
(1) Sensitivity: The ratio of the output increment to the added load increment. Usually the mV of the rated output per input of 1V voltage. When the company's products are matched with other company's products, the sensitivity coefficient must be the same.
(2) Hysteresis: The common meaning of hysteresis is: when the load is applied step by step and then the load is sequentially removed, the corresponding reading should be ideal for each level of load, but in fact the same is true, the degree of inconsistency is the same as the hysteresis error. An indicator to indicate. In the national standard, the hysteresis error is calculated as follows: the hysteresis error (H) of the sensor is calculated as follows: H = ΔθH / θn × 100%. ΔθH--the maximum difference (mv) between the arithmetic mean of the actual output signal values of the three strokes at the same test point and the arithmetic mean of the actual output signal values of the three upstrokes.
(3) Repeatability: Repetitive characterization of whether the output value of the sensor can be repeated when the same load is repeatedly applied under the same conditions. This characteristic is more important and better reflects the quality of the sensor. The national standard expresses the error of repeatability: the repeatability error can be measured simultaneously with the nonlinearity. The repeatability error (R) of the sensor is calculated as follows: R = ΔθR / θn × 100%. ΔθR--the maximum difference (mv) between the actual output signal values measured 3 times at the same test point.
(4) Allowable use temperature: specifies the application where this sensor can be applied. The normal temperature sensor is generally labeled as: -20 ° C ~ + 70 ° C. The high temperature sensor is labeled: -40 ° C ~ + 250 ° C.
(5) Allowable maximum excitation voltage: In order to increase the output signal, in some cases (for example, large tare weight), it is required to use an increased excitation voltage to obtain a larger signal.
(6) Allowable use of load (or safety overload): The maximum axial load allowed by the sensor. Allows overload work within a certain range. Generally it is 120% ~ 150%.
