When choosing an SF6 density relay calibrator, you need to consider the following factors: First, be clear about your needs and purpose. For example, if it is mainly used for the production, maintenance and monitoring of SF6 gas products, especially in power systems, a fully automatic SF6 gas density relay calibration instrument is required. Secondly, it is necessary to pay attention to the performance indicators of the equipment, such as accuracy, stability, reliability, etc.
In practice, the SF6 density relay needs to be calibrated on site, including latching return value check, latching value check, alarm value check, and overpressure value check. These tests require that the SF6 pressure values measured at a certain ambient temperature can be converted to their equivalent pressure values at 20 °C. Therefore, when selecting a model, it is also necessary to consider whether the equipment has such a function.
In addition, depending on the environment and size of the application, it may be necessary to select a device that supports the simultaneous calibration of multiple SF6 density relays. For example, the WINFOSS-A26 density relay calibrator can calibrate multiple SF6 density relays at the same time, which improves the work efficiency.
Finally, it is also wise to choose a brand and merchant with good after-sales service. In this way, when encountering equipment failure or needing technical support, you can get timely and effective help.