AIR OPERATED DOUBLE DIAPHRAGM PUMPS（气动双隔膜泵）.pdf

AIR OPERATED DOUBLE DIAPHRAGM PUMPS THE WIL-GARD™ II DIAPHRAGM MONITORING SYSTEM Wilden Pump Engineering Company broadens the change in electrical resistance. If a significant scope of applications suitable for the air-operated, change in resistance is detected, the system will acti- double-diaphragm pump by introducing the vate an audible alarm, a high brightness LED, and a Wil-Gard™ II Diaphragm Monitoring System. This latching relay contact closure while the back-up system detects diaphragm failure at the source: The diaphragm offers containment. The latching relay Primary Diaphragm, not at the air chamber or the air contacts, provided within the Wil-Gard™ II control exhaust as do other systems. This task is accom- module, enable you to activate external components plished by utilizing sensors located between the pri- such as isolation valves or air shut-off valves when a mary and back-up diaphragms within each side of leak is detected. The result is product containment, the Wilden pump. The sensors respond instantly to which reduces hazardous emissions, product conta- contact with virtually all conductive liquids. These mination, and maintenance costs. The Wil-Gard™ II sensors are engineered to withstand the fatigue and can be powered by a variety of electrical sources to punishment issued by a flexing diaphragm without meet your application requirements: 110V AC, losing their sensitivity. The Wil-Gard™ II control 220/240V AC (International), and 9 Volt battery oper- module continuously monitors these sensors for ation are available. FEATURES