Introduction; General Features - PCB Piezotronics IMI Sensors 685B1001A41 Installation And Operating Manual

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.
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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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