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The MiniPurge system provides a full purge and pressurization system for Class I Division1 Groups A-D and/or Zone 1 (21) IIC approval. When fitted to a suitable enclosure, the system enables regular electrical equipment to be operated safely in a hazardous location.
The leakage compensation system has two components: Control Unit (CU) and Relief Valve (RLV). The control unit contains the logic pneumatic to monitor and control air flow, pressure and purge timing, and provides system outputs )pneumatic or volt-free contact closures). The RLV allows the flow of purge gas and provides the measurement of that flow at the outlet. The RLV closes at the end of the purging period.
The system incorporates external outputs for use as power interlock and for alarm indication.