
BENTLY NEVADA 190501-09-00-04 Velomitor CT Low-Frequency Vibration Transducer
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01 / SENSOR RESPONSE
3.94 mV/mm/s
Nominal sensitivity: 100 mV/in/s, ±5%.
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02 / FREQUENCY RESPONSE
3–900 Hz
±1.0 dB response range; extended low-frequency response is available to 1.5 Hz at ±3.0 dB.
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The Velomitor CT is a piezoelectric velocity transducer with integrated electronics. It converts vibration-related motion into a velocity-proportional electrical signal for a compatible monitoring input.
Its low-frequency response is particularly relevant when cooling-tower fans or air-cooled heat-exchanger fans run at comparatively low rotational speeds. The sensor can capture casing vibration associated with fan, motor and speed-reducer operation.
| Measurement type | Casing vibration velocity |
| Sensor technology | Piezoelectric sensing with integrated electronics |
| Linearity | ±2% up to 63.5 mm/s peak |
| Operating temperature | −40°C to +85°C |
| Housing material | 316L stainless steel |
| Mounting surface | 33 mm diameter |
| Physical height | 82 mm |
| Electrical connection | 2-pin MIL-C-5015 connector; verify the exact ordering suffix before replacement. |
Cooling-tower fan bearings, air-cooled heat-exchanger fan assemblies, motor housings and other rotating equipment where casing vibration velocity is the required measurement.
For replacement work, confirm mounting thread, connector arrangement, hazardous-area approval requirements and monitor input compatibility before ordering.
| Device / family | Measurement focus | Selection consideration |
| 190501 Velomitor CT | Casing vibration velocity | Low-frequency response for low-speed fan machinery. |
| 330500 Velomitor | General piezo-velocity sensing | Compare frequency requirements; do not assume identical low-frequency performance. |
| 3300 XL proximity system | Shaft-relative vibration and position | Uses an eddy-current probe, extension cable and Proximitor sensor; it is a different measurement method. |
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| Sales Manager | Miya Zheng |
| sales@amikon.cn | |
| Phone / WhatsApp | +86 180 2077 6792 — Contact Sales |
Contact us within 7 days of receipt if an issue arises. Returned items must remain in their original condition, with the reason for return clearly stated. A return or replacement will be arranged after the goods are received and checked. Return shipping costs are the buyer's responsibility.
The Velomitor CT family is designed with a lower-frequency response for low-speed fan machinery. Check the actual operating frequency and required monitoring bandwidth against the application.
Not automatically. Both belong to the piezo-velocity sensor family, but the CT version emphasizes low-frequency response. Verify the measurement band, mounting and monitoring interface before substitution.
Confirm the input accepts the sensor's sensitivity and electrical characteristics, and verify connector pinout, cable arrangement and any required signal conditioning.
The transducer provides a vibration-proportional sensor signal rather than a standard 4–20 mA output. A compatible monitor or signal-conditioning device may be required.
Confirm the complete part number, connector and mounting configuration, operating environment, required approvals and compatibility with the existing vibration monitoring channel.
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