Bently Nevada 330400-01-00 Accelerometer

This Bently Nevada accelerometer provides accurate vibration measurements for rotating and reciprocating machinery. It converts mechanical motion into an electrical signal for condition monitoring systems. Engineers can deploy this sensor for predictive maintenance and machine protection applications. Its rugged piezoelectric design ensures reliable operation in demanding industrial environments. The sensor integrates seamlessly with Bently Nevada 3500 and 3700 monitoring platforms.

Physical Dimensions and Housing Design

The accelerometer measures 2.5 inches in length and 1.2 inches in diameter. Its stainless steel housing weighs approximately 4.5 ounces for robust installation. A 4-pin connector provides all power and signal interface connections. The unit features a threaded mounting base for secure attachment to machine surfaces. This design ensures proper mechanical coupling and accurate vibration transmission.

Sensitivity and Dynamic Range

The sensor delivers a sensitivity of 100 mV/g for standard vibration monitoring applications. It measures acceleration up to 500 g peak for comprehensive data acquisition. The unit provides a broad dynamic range from 0.1 g to 500 g. This range covers both low-level background vibration and high-amplitude events. The sensor maintains consistent sensitivity across its entire measurement range.

Frequency Response Characteristics

The accelerometer offers a frequency response from 0.5 Hz to 10 kHz. This bandwidth captures both slow-speed machinery and high-frequency events effectively. The unit maintains a ±5% sensitivity deviation across the entire frequency range. The sensor provides a resonant frequency of 25 kHz for extended measurement capability. This performance supports comprehensive vibration analysis for most machine types.

Connector Interface and Cable System

The unit features a 4-pin Mil-C-5015 connector for reliable signal transmission. This connector mates with standard Bently Nevada extension cables securely. The sensor includes internal Faraday shielding for electromagnetic interference protection. This shielding prevents noise pickup from nearby electrical equipment. The connector also includes a positive locking mechanism for vibration-resistant connections.

Excitation Voltage and Current Requirements

The sensor operates on a 24 VDC excitation voltage from the monitoring system. It draws a constant current of 4 mA for internal electronics operation. The unit provides a low-impedance voltage output for noise-resistant signal transmission. This design allows cable runs up to 100 meters without signal degradation. The sensor includes built-in reverse polarity protection for safe installation.

Temperature Range and Environmental Resistance

The accelerometer operates reliably from -50 to 120 degrees Celsius. Its hermetically sealed housing resists moisture and contaminant ingress effectively. The unit withstands humidity up to 100% for marine and outdoor applications. The sensor meets IP67 standards for dust and water protection. This environmental tolerance ensures long-term reliability in harsh industrial settings.

Technical Specifications Overview

Parameter	Detail
Model Number	330400-01-00
Type	Accelerometer (Piezoelectric)
Sensitivity	100 mV/g
Measurement Range	0.1 to 500 g peak
Frequency Response	0.5 Hz to 10 kHz
Resonant Frequency	25 kHz
Housing Material	Stainless steel
Housing Diameter	1.2 inches (30 mm)
Length	2.5 inches (63 mm)
Weight	4.5 oz (128 g)
Connector	4-pin Mil-C-5015
Excitation Voltage	24 VDC
Current Draw	4 mA (constant)
Output Impedance	Low (100 Ω)
Max Cable Length	100 meters
Operating Temperature	-50 to 120 °C
Humidity Tolerance	100% condensing
Enclosure Rating	IP67
Accuracy	±5% sensitivity deviation