438R Vibration Switches With Remote Transducer
Monitor Vibration From Up to 1,000 Feet Away
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.
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Part No. | Used with Transducer Model No. | Max. Transducer Temp | Transducer Frequency Response | Enclosure | Input Power |
---|---|---|---|---|---|
53285-3 | 4073 | 250F/121C | 0.8 – 10000 Hz | NEMA 4 | 120/220V AC (field-selectable) |
53285-7 | 4034 | 160F/71C | 12 – 1000 Hz | NEMA 4 | 120/220V AC (field-selectable) |
53285-8 | 4034 | 160F/71C | 12 – 1000 Hz | Explosion-proof | 120/220V AC (field-selectable) |
53285-24 | 4073 | 250F/121C | 0.8 – 10000 Hz | NEMA 4X | 120/220V AC (field-selectable) |
53285-31 | 4073 | 250F/121C | 0.8 – 10000 Hz | NEMA 4 | 24V DC |
53285-36 | 4033-400 | 400F/204C | 20 – 1500 Hz | NEMA 4 | 120/220V AC (field-selectable) |
53285-36 | 4033-500 | 500F/260C | 20 – 1500 Hz | NEMA 4 | 120/220V AC (field-selectable) |
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) |
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 |