Description

The 190501-12-00-01 is a Bently Nevada Velomitor CT Velocity Transducer specifically configured with Option 12 (Stud M6x1 with 3/8-in 24 adapter), Option 00 (MIL-C-5015 connection interface), and Option 01 (Agency Approvals: CSA/NRTL/C, ATEX/IECEX/CSA). This low-frequency piezo-velocity sensor is designed to measure casing vibration velocity on machinery such as cooling towers and air-cooled heat-exchanger fan assemblies. It provides consistent monitoring for equipment typically operating at or above 90 rpm, capturing vibration frequencies relevant to both the rotor and the associated speed reducer or fan motor. As part of the 3300-compatible monitoring ecosystem, this transducer is constructed with a 316L stainless steel case to withstand harsh industrial environments. Proper installation on the bearing housing or machine casing is essential to ensure accurate signal transmission and to avoid false readings caused by improper mounting. This unit features internal isolation of electronics from the case, minimizing ground loop interference in complex machinery protection installations.

Features

• Option 12 Mounting: Includes Stud M6x1 with 3/8-in 24 adapter for versatile mechanical attachment.
• Option 00 Connection: Standard MIL-C-5015 connection interface for robust, industry-standard cabling.
• Option 01 Certification: Agency approved for CSA/NRTL/C (Class I, Division 1) and ATEX/IECEX/CSA (Class I, Zone 0/1) hazardous area installations.
• Low-frequency response optimized for 3 Hz to 900 Hz range (at 1.0 dB).
• 316L stainless steel housing for durability and corrosion resistance.
• Electrically isolated internal electronics from the transducer case.
• Compatible with standard 2-pin MIL-C-5015 cable assemblies.

Applications

• Cooling tower fan assemblies
• Air-cooled heat exchangers
• Low-speed rotating machinery (90 rpm and above)
• Machine casing vibration monitoring
• General industrial vibration protection where low-frequency accuracy is required

Ordering Information

Orderable Part Number	190501-12-00-01	Velomitor CT Velocity Transducer
A - Mounting Hardware	12	Stud M6x1 with 3/8-in 24 adapter
B - Connection Option	00	MIL-C-5015 connection interface
C - Agency Approval	01	CSA/NRTL/C (Class I, Div 1), ATEX/IECEX/CSA (Class I, Zone 0/1)

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Part Number	190501-12-00-01
Sensitivity	3.94 mV/mm/s (100 mV/in/s) +/- 5%
Frequency Response	3 Hz to 900 Hz (+/- 1.0 dB); 1.5 Hz to 1.0 kHz (+/- 3.0 dB)
Velocity Range	63.5 mm/s pk (2.5 in/s pk)
Case Material	316L stainless steel
Operating Temperature	-40 degC to +85 degC (-40 degF to +185 degF)
Storage Temperature	-40 degC to +100 degC (-40 degF to +212 degF)
Weight	< 297 g (10.5 oz)
Connector	2-pin MIL-C-5015
Shock Limit	5000 g pk, maximum

Installation Guidelines

• Install the transducer directly on the bearing housing or machine casing to maintain frequency response.
• Use the provided mounting adapter (Option 12: M6x1 to 3/8-in 24) and tighten to a mounting torque of 4.5 N-m +/- 0.6 N-m.
• Ensure the cable is properly secured to prevent mechanical stress on the MIL-C-5015 connector.
• For hazardous area installations (Option 01), follow the specific requirements outlined in drawing 167536.
• Verify that the mounting location provides a direct path for rotor vibration to ensure effective machine protection.

Compliance and Certifications

• CSA/NRTL/C (Class I, Division 1, Groups A, B, C, D; Class II, Group E, F, G; Class III)
• ATEX/IECEX (Ex ia IIC T3 Ga / Ex ec IIC T3 Gc / Ex tc IIIC T200 degC Dc)
• EMC Directive 2014/30/EU
• RoHS Directive 2011/65/EU
• FCC Part 15 compliant