Bently Nevada 330500-01-01 Velomitor Piezo-velocity Sensor

Description

The 330500-01-01 is a Velomitor Piezo-velocity Sensor designed for measuring absolute casing or structural vibration on rotating machinery. This specific configuration features a 1/2-20 UNF mounting thread (Option 01) and CSA/US/C agency approvals (Option 01). Built as a specialized piezoelectric accelerometer with integrated electronics, the 330500 provides a reliable, solid-state solution for machinery protection. Unlike traditional velocity transducers with moving parts that degrade over time, the 330500 sensor is entirely solid-state. It features a robust 316L stainless steel, hermetically sealed housing, allowing for vertical, horizontal, or any other orientation without affecting performance. The unit is used to monitor machine malfunctions such as unbalance and misalignment by detecting changes in casing vibration, making it an essential component in critical machinery monitoring chains.

Features

• 1/2-20 UNF mounting thread (Option 01) for standard stud installation
• CSA/US/C agency approval (Option 01) for hazardous area compliance
• Solid-state design with no moving parts to ensure longevity and minimize mechanical wear
• 316L stainless steel, hermetically sealed housing for durability in harsh industrial environments
• Sensitivity of 100 mV/in/s (3.94 mV/mm/s) for accurate vibration measurement
• 2-pin Mil-C-5015 connector for reliable signal transmission
• Suitable for horizontal, vertical, or angled orientation

Applications

• Power generation machinery
• Hydroelectric turbines
• Petrochemical processing equipment
• General rotating machinery protection (fans, pumps, motors)
• Bearing housing and structural vibration monitoring

Ordering Information

Option	Code	Description
Orderable Part Number	330500-01-01	Velomitor Piezo-velocity Sensor
A - Mounting Thread	01	1/2-20 UNF
B - Agency Approval	01	CSA/US/C

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Model/Part Number	330500-01-01
Sensitivity	100 mV/in/s (3.94 mV/mm/s) +/- 5%
Frequency Response	4.5 Hz to 5 kHz (+/- 3.0 dB)
Velocity Range	1270 mm/s (50 in/s) peak
Case Material	316L stainless steel
Connector	2-pin Mil-C-5015, hermetically sealed
Operating Temperature	-55 degC to 121 degC (-67 degF to 250 degF)
Weight	142 g (0.142 kg)
Diameter	25.3 mm
Height	63.2 mm
Mounting Torque	32-46 kg cm (24-40 in-lb) max
Grounding	Case isolated
Agency Approvals	CSA/US/C

Installation Guidelines

• Ensure the sensor is installed on a flat, clean surface on the bearing housing or machine casing for optimal frequency response.
• Use the specified 1/2-20 UNF mounting adapter (Option 01) and observe the maximum mounting torque of 32-46 kg cm (24-40 in-lb) to prevent damage.
• Avoid over-tightening or using improper adapters, which can lead to false signals or degraded amplitude response.
• If integrating the output to measure displacement, be aware that electrical noise can be amplified; maintain proper cabling and shielding practices.

Compliance and Certifications

• CSA/US/C (Option 01)
• CE
• EMC Directive 2014/30/EU
• RoHS Directive 2011/65/EU
• ABS Marine Vessels compliant