HR-WPQEX Series Zener Barrier is the company's latest product which is manufactured according to GB3836.1-2000 and B3836.4-2000. The product has been tested by NEPSI and obtained explosion-proof certificate.
This series products have many different models and can be used with first instrument such as transmitter, 4-20mA analog signal transmitter, domestic DDZ-Ⅲ type transmitter, electrical converters, electric valve positioner, all kinds of thermocouples, switch (contact and analog switch), flow meters (turbine, waist wheel, scraper, vortex flow transmitter, etc.), electromagnetic valve and various special instrument to compose intrinsic safety explosion-proof system. It is widely used in petroleum, chemical, pharmaceutical, shipbuilding and other areas.