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Comprehensive solutions for level measurement

| By Mary Page Bailey and Gerald Ondrey

Vibration limit switches reliably detect the fill level of liquids at all times. With Vibracon LVL-M3 and -M4 (photo), this company offers two new series of vibration limit switches that can be used worldwide in hazardous areas due to ATEX and IECEx approvals. The LVL-M3 version is suitable for universal use in all pumpable liquids. The vibration limit switch can withstand process temperatures of –40 to 150°C and process pressures of up to 40 bars. The LVL-M4 version is suitable for safety applications up to SIL 3. The sensor is resistant to process temperatures of –50 to 150°C and process pressures up to 100 bars. The LVL-M4 version has a Bluetooth interface that can be used to connect the device to the company’s Level App. This mobile application enables status and fault indication to proof testing. — Pepperl+Fuchs SE, Mannheim, Germany