VITEC 438R Vibration Switches With Remote Transducer

Switches

The 438R monitors the vibration level of rotating equipment using a velocity or acceleration transducer mounted to your machine and located up to 1,000 feet from the 438R electronics enclosure. The 438R is ideally suited for applications where the electronics should be easily accessible but the point to be monitored is in a dangerous or inconvenient area such as a cooling tower fan, overhead conveyor or remote pumping station. The 438R is also used in applications where the point to be monitored has a rounded surface, such as a bearing block.

AC and DC signal outputs allow for communication to external devices such as spectrum analyzers, PLCs and Distributed Control Systems. Relays for Alarm and Trip give the capability for early warning and shutdown of your equipment when increased vibration levels are detected. Enclosures are available for wet, corrosive or hazardous environments and transducers for temperatures up to 500F/260C.

Measurement Mode
Velocity
Transducer Model No.
Determined by temperature at mounting point and frequency response required
Analog Output (DC)
4 – 20 mA
Enclosure Operating Temperature
-25 to +160F (-32 to +71C)
Enclosure
NEMA 4, NEMA 4X or Explosion-proof (Class I, Groups C&D; Class II Groups E,F&G)
Cable Assembly Length
Up to 1000 ft. (305M)
FIELD ADJUSTABLE CHARACTERISTICS
Power input
120 or 220V AC (switch-selectable)
Full scale range
0 – 1 in/sec or 0 – 3 in/sec
Alarm & Trip setpoints
0 – 100% of full scale range
Relay state
Normally de-energized (closes above setpoint) or normally energized (opens above setpoint)
Relay configuration
Latching or non-latching
Relay time delay
0 to 20 sec, each relay
AC signal output
100 mV/g or 100 mV/in/sec

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