Tester for SF6 gas density relay
A technology of gas density and relay, applied in the field of calibration equipment, can solve the problems of poor accuracy, inconsistency in actual application conditions, inconvenience, etc.
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Embodiment 1
[0045] For the tested SF 6 Whether the density relay is an absolute pressure relay or a relative pressure relay, use man-machine communication, that is, use man-machine interface dialogue or manual selection (man-machine dialogue or manual selection can be flexible and diverse, without restrictions, for example, an external selection button, keyboard, etc. can be used or switch; you can also use the keyboard on the LCD, you can also use the question answering method, you can also use the touch screen on the LCD to operate, etc.), to confirm with the instrument.
[0046] The absolute pressure sensor is used to measure the absolute pressure relay to obtain the absolute pressure value, and then according to the temperature value (obtained by the temperature sensor) and SF during the test 6 The pressure-temperature characteristic relationship of the gas is automatically converted to the corresponding absolute pressure value at 20°C, and the SF 6 Performance verification of gas de...
Embodiment 2
[0052] Using sensors of two methods of measuring pressure values, that is, relative pressure sensor and absolute pressure sensor, apply the same pressure (relative pressure can be 0) for measurement, so as to obtain the local atmospheric pressure P 当地气压 =P 绝对传感器压力 -P 相对传感器压力 . and put the local atmospheric pressure P 当地气压 stored in the instrument.
[0053] For the tested SF 6 Whether the density relay is an absolute pressure relay or a relative pressure relay, use man-machine communication, that is, use man-machine dialogue or manual selection (the form of man-machine dialogue or manual selection can be flexible and diverse, without restrictions, for example, an external selection button, keyboard or switch; you can also use the keyboard on the LCD, you can also use the question answering method, you can also use the touch screen on the LCD to operate, etc.), to confirm with the instrument.
[0054] Both types of density relays were tested with sensors measuring absolute ...
Embodiment 3
[0061] Using sensors of two methods of measuring pressure values, that is, relative pressure sensor and absolute pressure sensor, apply the same pressure (relative pressure can be 0) for measurement, so as to obtain the local atmospheric pressure P 当地气压 =P 绝对传感器压力 -P 相对传感器压力 . and put the local atmospheric pressure P 当地气压 stored in the instrument.
[0062] For the tested SF 6 Whether the density relay is an absolute pressure relay or a relative pressure relay, use man-machine communication, that is, use man-machine dialogue or manual selection (the form of man-machine dialogue or manual selection can be flexible and diverse, without restrictions, for example, an external selection button, keyboard or switch; you can also use the keyboard on the LCD, you can also use the question answering method, you can also use the touch screen on the LCD to operate, etc.), to confirm with the instrument.
[0063] Both types of density relays were tested with sensors measuring relative ...
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