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Bently Nevada

Bently Nevada 330850-90-CN 3300 XL 25 mm Proximitor Sensor

SKU 330850-90-CN

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12-month warranty
Free returns within 30 days

Manufacturer: Bently Nevada
Product No.: 330850-90-CN
Origin United States
Product Type: 3300 XL 25 mm Proximitor Sensor
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 0.35 kg
Dimensions: 70 mm x 120 mm x 120 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Quantità

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Product Description

Description

330850-90-CN: 3300 XL 25 mm Proximitor Sensor configured for 9.0 meters total system length, panel mounting, and equipped with the -CN China hazardous area approval package.

This eddy-current sensor operates as part of the 3300 XL 25 mm Proximity Transducer System, translating the high-frequency signal from a 25 mm probe into a linear voltage output of 0.787 V/mm (20 mV/mil). The 12.7 mm (500 mils) linear range is optimized for large-target displacement measurements, including steam turbine thrust position and rod-drop monitoring. The -CN designation includes NEPSI and CCC certifications, validating the module for installation in regulated Chinese hazardous areas.

Features

9.0 meters system length configuration, designed for panel mount installations.
12.7 mm (500 mils) linear range beginning at 0.63 mm (25 mils) from the target surface.
Nominal average scale factor of 0.787 V/mm (20 mV/mil) for precise signal resolution.
Integrated -CN China approval package with NEPSI and CCC certifications.
Broad operating temperature range of -51 degC to +100 degC (-60 degF to +212 degF).
High RFI/EMI immunity meeting European CE mark requirements without special mounting.

Applications

Large-target eddy-current displacement measurement.
Steam turbine thrust position monitoring.
Reciprocating compressor rod-drop monitoring.
Differential expansion measurements on mid-size to large steam turbine generators.

Ordering Information

Option / Segment	Code on This SKU	Description
Orderable Part Number	330850-90-CN	3300 XL 25 mm Proximitor Sensor
A - Total Length and Mounting	90	9.0 meters (29.5 feet) system length, panel mount
Suffix -CN	-CN	China hazardous area approval package (NEPSI, CCC, and associated markings)

Technical Specifications

Parameter	Specification
Manufacturer	Bently Nevada
Part Number	330850-90-CN
Product Type	3300 XL 25 mm Proximitor Sensor
System Length	9.0 meters (29.5 feet)
Mounting Option	Panel mount
Input Power Requirements	-17.5 Vdc to -26 Vdc (without barriers) at 12 mA maximum consumption; -23 Vdc to -26 Vdc (with barriers)
Output Signal Range	-1.5 Vdc to -11.5 Vdc (approximate)
Average Scale Factor (ASF)	0.787 V/mm (20 mV/mil) nominal
Linear Range	12.7 mm (500 mils)
Deviation from Best Fit Straight Line (DSL)	Less than +/-0.31 mm (+/-12 mils)
Output Resistance	50 ohms
Frequency Response	0 to 2.7 kHz (+0, -3 dB typical) with up to 305 meters of field wiring
Operating Temperature Range	-51 degC to +100 degC (-60 degF to +212 degF)
Storage Temperature Range	-51 degC to +105 degC (-60 degF to +221 degF)
Relative Humidity	100% condensing, non-submersible (with protected connectors)
Housing Material	A380 aluminum
Approvals	NEPSI, CCC, CE

Connections and Interfaces

Terminal	Function
VT	Power Supply Input (-17.5 to -26 Vdc)
OUT	Signal Output (-1.5 to -11.5 Vdc)
COM	Common / Ground Reference

Installation Guidelines

Mount the Proximitor sensor on a clean, flat surface using the integrated panel-mount holes.
Use three-conductor shielded triad cable for field wiring between the Proximitor sensor and the monitor.
Ensure the field wiring does not exceed a maximum length of 305 meters (1000 feet) to prevent signal rolloff.
Connect the 3300 XL 25 mm probe and extension cable matching the total 9.0 meters system length calibration.
Terminate the field wiring shield at the monitor end only to prevent ground loops.

Compliance and Certifications

NEPSI: Explosive atmosphere protection certification for China.
CCC: China Compulsory Certification for hazardous area products.
CE: Complies with European RFI/EMI immunity requirements.

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What does the "90" option code mean on the 330850-90-CN Proximitor?

The "90" option specifies a 9.0-meter total system length configuration designed for panel-mount installations.

What is the significance of the "-CN" suffix on this model?

The "-CN" suffix indicates that the sensor is equipped with the China hazardous area approval package, including NEPSI and CCC certifications.

What probe and extension cable should be paired with this Proximitor?

This Proximitor must be paired with a 3300 XL 25 mm proximity probe and extension cable whose combined lengths equal the 9.0-meter system configuration.

What is the linear range and scale factor of this sensor?

It provides a 12.7 mm (500 mils) linear range with a nominal average scale factor of 0.787 V/mm (20 mV/mil).

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