2016-11-19

The standard gas with a concentration of about 60% of the full scale is introduced, and when the indicating value is stable, the stable indicator value is read and the standard gas is removed. When the instrument returns to zero, the standard gas with the above concentration is introduced again, and the stopwatch is started at the same time. When the indicating value of the instrument reaches 90% of the stable indicator value, the stopwatch is stopped. The response time of the instrument is less

2016-11-19

1. For the detection and alarm instrument, pass standard gas 1.5 times of the alarm set value, record the alarm concentration value displayed by the instrument, repeat the measurement for 3 times, and take the arithmetic average of 3 times as the alarm value 2. For the recording and alarm instrument, use the standard gas dilution device to inject the standard gas lower than the alarm point, gradually increase the gas concentration, and record the standard concentration value when the instrume

2016-11-01

1. The system adopts CAN bus technology, which has strong anti-interference and prevents network paralysis and data disorder. The networking mode is flexible and the field wiring is more concise; 2.DSP digital signal processing technology, 32-bit wide data processing, data sampling is more accurate and efficient; 3. All-weather online monitoring and control function to ensure safe and efficient maintenance work; 4. When an individual monitor fails, it does not affect the normal operatio

2016-10-27

(1) The equipment is poorly dried, and excessive moisture is absorbed in the assembly process of the factory, such as epoxy resin support parts, tie rods, etc., adsorb moisture during the processing process, and the drying is not thorough, which will slowly be released into the SF6 gas, and the circuit breaker may bring the moisture in the air to the inside of the equipment during the production and assembly process. Although the equipment is required to be filled with high-purity nitrogen and v

2016-10-25

The measurement of SF6 micrometer is based on the principle that the electrical parameters of hygroscopic substances change with humidity. At present, the humidity sensitive components used mainly include alumina, carbon and ceramics, polymer films, and various inorganic chemical crystals.

2016-10-23

In theory, SF6 gas is enclosed in sulfur hexafluoride electrical equipment, and there is no possibility of leakage. However, this is not the case, any container equipment can not be 100% sealed, so there must be a leak, sulfur hexafluoride gas leakage is divided into two kinds, one is a natural leak, one is a defect leak, the former is a natural phenomenon, cannot be avoided, and the latter is caused by equipment defects, which can be found and repaired by monitoring means. For the normal leakag