Introduction
The 685B-Series is an electronic vibration switch designed to monitor vibration levels and trip an alert when a
specified limit is exceeded. A second onboard relay trips an alarm that can be used to shut down a piece of
equipment or act as a secondary alert level. An onboard accelerometer with precision electronics insures
reliability and accuracy.
General Features
Embedded or external piezoelectric accelerometer for improved accuracy and frequency response.
Vibration range can be measured in acceleration, velocity or displacement (factory set).
Provides dual 5 Amp Triac (SPST) or 10 Amp Form C (SPDT) relay outputs.
Adjustable trip limits and time delay via single turn potentiometers.
Accommodates normally open (NO) and normally closed (NC) wiring schemes.
Continuous or latching switch action.
Local reset button and remote reset capability.
LED indicators for power, alert and alarm.
Screw terminal blocks for easy wiring.
Mounts directly to the equipment being monitored via four bolt pattern.
Flexible design allows for various custom requirements.
4-20 mA field calibration feature for improved accuracy.
Raw vibration & 4-20 mA outputs as standard.
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