Bently Nevada 330425-02-05 Accelerometer

Description

The 330425-02-05 is a high-reliability accelerometer from the Bently Nevada 3300 series, specifically configured for critical machinery applications where casing acceleration measurement is essential. This variant features a 25 mV/g sensitivity and a 75 g peak amplitude range, making it suitable for monitoring gear mesh and other high-frequency vibration events. This unit utilizes an M8 x 1 integral mounting stud (Option 02) and is rated for operation in hazardous areas with multiple agency approvals (Option 05), including CSA, ATEX, and IECEx. Designed to operate in harsh industrial environments, the 330425-02-05 provides a robust solution for protecting rotating machinery. The sensor is constructed with a 316L stainless steel case, offering excellent resistance to corrosion and environmental degradation. It is fully compatible with existing 3300 series monitoring systems and is engineered for installation on bearing housings or machine casings to ensure accurate signal transmission for vibration analysis and protection.

Features

• Sensitivity: 25 mV/g (2.5 mV/m/s2) with a 75 g peak acceleration range.
• Mounting: Integrated M8 x 1 mounting stud (Option 02).
• Approvals: Multiple hazardous area certifications including CSA, ATEX, and IECEx (Option 05).
• Construction: 316L stainless steel, hermetically sealed casing for environmental protection.
• Frequency Response: 10 Hz to 15 kHz (+/- 3 dB); 30 Hz to 10 kHz (+/- 10%).
• Mounting Resonant Frequency: Greater than 30 kHz.
• Operating Temperature: -55 degC to +121 degC (-67 degF to +250 degF).
• Grounding: Case isolated for electrical interference reduction.

Applications

• Gear mesh monitoring in rotating machinery
• Bearing housing vibration measurement
• Critical machinery protection for motors, pumps, and compressors
• General purpose casing acceleration for high-frequency vibration analysis
• Hazardous area machinery monitoring

Ordering Information

Option	Code on This SKU	Description
Orderable Part Number	330425-02-05	330425 Accelerometer, M8 x 1 stud, Agency Approved
A - Mounting Thread	02	M8 x 1 integral stud
B - Agency Approval	05	Multiple approvals (CSA, ATEX, IECEx)

Technical Specifications

Manufacturer	Bently Nevada
Part Number	330425-02-05
Sensitivity	2.5 mV/m/s2 (25 mV/g) +/- 5%
Acceleration Range	735 m/s2 (75 g) peak
Amplitude Linearity	+/- 1% to 735 m/s2 (75 g) peak
Frequency Response	10 Hz to 15 kHz (+/- 3 dB)
Case Material	316L stainless steel
Operating Temperature	-55 degC to +121 degC (-67 degF to +250 degF)
Connector	3-pin MIL-C-5015 Receptacle
Weight	100 g (3.5 oz) typical
IP Rating	IP68 (sensor only)
Shock Survivability	49,050 m/s2 (5000 g) peak

Installation Guidelines

• Mount on a clean, flat surface with 32 uinch rms finish or better.
• Recommended mounting torque: 4.1 N-m (3.0 ft-lb).
• Ensure the mating connector provides IP54 ingress protection or better in hazardous areas.
• Use appropriate conduit and cabling for hazardous area installations as defined by local electrical codes (e.g., NEC/CEC).
• Transient protection should be set at a level not exceeding 140% of the peak rated voltage at supply terminals.

Compliance and Certifications

• ATEX (Directive 2014/34/EU)
• CSA (C22.2 No. 61010-1-12, ANSI/UL 61010-1)
• IECEx
• EMC Directive 2014/30/EU
• RoHS Directive 2011/65/EU
• ABS Marine Vessels compliant