Description

The 190501-12-00-05 is a configuration of the Bently Nevada Velomitor CT Velocity Transducer, specifically optimized for low-frequency casing vibration measurements. This unit features a plate stud (Option 12: Plate Stud 3/8-in 24 to M8x1) for mounting, a standard MIL-C-5015 connection interface (Option 00), and no agency approvals (Option 05/00 - standard non-hazardous configuration). Designed for machines operating at or above 90 rpm, such as cooling towers and air-cooled heat exchangers, this piezoelectric velocity sensor provides continuous monitoring of casing vibration velocity. The Velomitor CT is engineered to detect rotor-related malfunctions, including unbalance and misalignment, by measuring vibration transmitted to the machine casing or bearing housing. It is a robust, solid-state device that delivers a signal output proportional to the vibration velocity, ensuring reliable data for machinery protection systems.

Features

• Designed for low-frequency applications (100 to 300 rpm typical).
• Option 12: Plate Stud (3/8-in 24 to M8x1) mounting configuration.
• Option 00: Industry-standard 2-pin MIL-C-5015 connection interface.
• Solid-state construction with 316L stainless steel case.
• Internal electronics isolated from the case to minimize ground loop interference.
• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) at 100 Hz.

Applications

• Cooling tower fan assemblies
• Air-cooled heat exchanger fans
• Low-speed rotating machinery
• Bearing housing vibration monitoring
• Casing vibration protection

Ordering Information

Option	Code on This SKU	Description
Orderable Part Number	190501-12-00-05	Velomitor CT Velocity Transducer
A - Mounting Hardware	12	Plate Stud 3/8-in 24 to M8x1
B - Connection Option	00	MIL-C-5015 connection interface
C - Agency Approval	05	Standard (No hazardous area approvals indicated for this base selection)

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Part Number	190501-12-00-05
Case Material	316L stainless steel
Connector	2-pin MIL-C-5015, top
Sensitivity	3.94 mV/mm/s (100 mV/in/s) ±5%
Frequency Response	3.0 Hz to 900 Hz (±1.0 dB); 1.5 Hz to 1.0 kHz (±3.0 dB)
Operating Temperature	-40 degC to +85 degC (-40 degF to +185 degF)
Velocity Range	63.5 mm/s pk (2.5 in/s pk)
Weight	<297 g (10.5 oz)
Mounting Torque	4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf)

Installation Guidelines

• Ensure the transducer is installed on a clean, flat surface on the bearing housing or machine casing for optimal signal transmission.
• Use the specified plate stud for secure mechanical coupling.
• Maintain the recommended mounting torque to prevent resonance shifts.
• Use shielded cable to protect the signal from external electromagnetic interference.
• Avoid installation in locations where the transducer may be submerged; the unit is designed for 100% condensing humidity but not for continuous submersion.