From the Vibration Analyst to the Controls Engineer, IMI’s model 685B electronic vibration switch has all the bases covered in the protection of critical machinery.

Application Engineers, like those of us here at IMI Sensors, often hear similar problems and questions expressed by our customers over and over again: “safety folks won’t let us go there anymore we need permanent mount sensors”, “I need a simple way to trend machine vibration on a PLC”, “how can I verify that my accelerometers are working correctly?”

At the top of the list, however: “We have these vibration switches and when they trip we have no idea why or what caused it. The machine seems to run fine so we just re-set the switch and re-start the machine.”

Often times old fashioned mechanical vibration switches are used to protect critical machinery. A mechanical switch relies on a spring latch system to trip. They require no external power and are the most simplistic of devices. Turn the dial, set your threshold and wait for the switch to trip.

But what happens when that switch does trip? Why did it trip? Was there a real vibration problem? Was it a transient event like a truck passing by that caused the trip? What was my vibration level just before my relay tripped?

A mechanical switch cannot answer these questions.

IMI’s model 685B electronic vibration switch is “fully loaded” with all the features one needs to not only recognize a potential vibration issue on critical machinery, but also diagnose and fix the problem. The model 685B switch features an internal accelerometer and has a terminal strip offering the critical components of vibration monitoring and predictive maintenance: 

• Dual relays allow for alert and alarm vibration trip levels
• Adjustable time delays on each relay prevent false trips from transient events
• 4-20 mA overall vibration output can be routed to a control system (PLC, DCS, SCADA)
• Analog raw vibration signal output for FFT spectrum analysis with portable data collector

Most of our fully loaded 685B electronic vibration switches are approved for use in hazardous areas and have Class 1 Div 2 certification through CSA. IMI also has Div 1 switches as well and each switch has remote reset capability.

Already priced below the competition, significant quantity discounts are available starting at just six switches. IMI’s Application Engineers can walk you through the selection process or even cross reference your existing switch to an equivalent model. Give IMI a call today at 800-959-4464.

Vibration Switches
Take a look at IMI's full line of vibration switches. This brochure also includes an ordering guide for model 685B, full color pictures and a look inside at the internal configuration.

  

Electronic Vibration Switch

Model 685B0000A10     

 

Electronic vibration switch, internal ICP®, 0-1.5 ips, AC powered, 5A triac relays, dual cord grips

685B series electronic vibration switch with internal sensor, 0-1.5 ips scale factor, 85-245 Vac power, 5A triac relays, dual cord grip connection interfaces.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual Cord Grips
• Relay: (Alert) Triac 5A, 245 VAC
• Relay: (Alarm) Triac 5A, 245 VAC
• Power Required: 85-245 VAC 50/60 Hz

 

  

Electronic Vibration Switch

Model 685B0001A30     

 

Electronic vibration switch, internal ICP®, 0-1.5 ips, AC powered, 10A form C relays, BNC acceleration output, dual cord grips

685B series electronic vibration switch with internal sensor, 0-1.5 ips scale factor, 85-245 Vac power, 5A from C relays (SPDT), external BNC connection for raw vibration output, and dual 1/2" NPT conduit hubs.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual Cord Grips
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz

 

Also available in:

 

  

Electronic Vibration Switch

Model 685B0001C14     

 

Electronic vibration switch, internal ICP®, 0-1.5 ips, AC powered,10A form C relays, Class 1 Div 1, groups B,C,D, dual 1/2"" NPT conn.

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual 1/2 in. NPT Conduit Hubs
• Relay: (Alert) 10A/245 VAC or 5A/30 VDC
• Relay: (Alarm) 10A/245 VAC or 5A/30 VDC
• Power Required: 85-245 VAC 50/60 Hz

 

  

Electronic Vibration Switch

Model 685B0011A13     

 

Electronic vibration switch, internal ICP, 0-1.5 in/sec measurement range, 24 VDC powered, dual Form C relays, standard enclosure with single 1/2"""" NPT opening

685B series electronic vibration switch with internal sensor, 0-1.5 ips scale factor, 24 VDC powered, 5A from C relays (SPDT), single port with 1/2" NPT conduit hub.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Single 1/2 in. NPT Conduit Hub
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 24 VDC +/- 10%

 

  

Electronic Vibration Switch

Model 685B0001A10     

 

Electronic vibration switch, internal ICP®, 0-1.5 ips, AC powered, 10A form C relays, dual cord grips

685B series electronic vibration switch with internal sensor, 0-1.5 ips scale factor, 85-245 Vac power, 10A Form C relays, dual cord grip connection interfaces.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual Cord Grips
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz

 

Also available in:

 

  

Electronic Vibration Switch

Model 685B0001A13     

 

Electronic vibration switch

685B series electronic vibration switch with internal sensor, 0-1.5 ips scale factor, 85-245 Vac power, 10A Form C relays, single 1/2" NPT conduit hub, CSA approved.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Single 1/2 in. NPT Conduit Hub
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz

 

  

Electronic Vibration Switch

Model 685B0001A31     

 

Electronic vibration switch

685B series electronic vibration switch with internal sensor, 0-1.5 ips scale factor, 85-245 Vac power, 5A from C relays (SPDT), external BNC connection for raw vibration output, and dual 1/2" NPT conduit hubs.

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual 1/2 in. NPT Conduit Hubs
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz

 

  

Electronic Vibration Switch

Model 685B1001A10     

 

Electronic vibration switch, external ICP®, 0-1.5 ips, AC powered, 10A form C relays, dual cord grip interface

685B series electronic vibration switch with external sensor (not supplied), 0-1.5 ips scale factor, 85-245 Vac power, 10A Form C relays, dual cord grip connection interfaces.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual Cord Grips
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz

 

  

Electronic Vibration Switch

Model 685B1001A30     

 

Electronic vibration switch, external ICP®, 0-1.5 ips, AC powered, 10A form C relays, external BNC, dual cord grip interface

685B series electronic vibration switch with external sensor (not supplied), 0-1.5 ips scale factor, 85-245 Vac power, 10A Form C relays, dual cord grip connection interfaces.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual Cord Grips
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz

 

  

Electronic Vibration Switch

Model 685B1001A41     

 

Electronic vibration switch, external ICP®, 0-1.5 in/sec peak, AC powered, 10A form C relays, external BNC, external pushbutton reset, dual 1/2 NPT conduit hubs

685B series electronic vibration switch with external sensor (not supplied), 0-1.5 ips scale factor, 85-245 Vac power, 10A Form C relays, dual 1/2" NPT conduit hubs.
Vibration Switches Data Sheet

• Measurement Range: 0 to 1.5 in/sec pk (0 to 38.1 mm/s pk)
• Enclosure: Internal and Remote Reset
• Cable Input: Dual 1/2 in. NPT Conduit Hubs
• Relay: (Alert) 10 A, 245 VAC/30 VDC, Form C
• Relay: (Alarm) 10 A, 245 VAC/30 VDC, Form C
• Power Required: 85-245 VAC 50/60 Hz