Product Overview

The Bently Nevada 330980-71-CN is an NSv Proximitor Sensor. This model shares similar features with the 3300 XL 8 mm Proximitor Sensor.

Its thin design allows the user to mount it in either a high-density DIN-rail installation or a more traditional panel mount configuration. Improved RFI/EMI immunity allows the 3300 XL NSv Proximitor Sensor to achieve European CE mark approvals without any special mounting considerations. This RFI immunity also prevents nearby high frequency radio signals from adversely affecting the transducer system. Furthermore, SpringLoc terminal strips require no special installation tools and facilitate faster, highly robust field wiring connections.

Ordering Information Breakdown

The 330980-71-CN follows a specific ordering code structure.

• 330980: NSv Proximitor Sensor base model.

• 71: 7.0 meters (23.0 feet) system length, DIN mount.

• CN: Country specific agency approvals.

General Specifications

The 330980-71-CN offers reliable signal conditioning for NSv proximity systems.

• Manufacturer: Bently Nevada.

• Product Type: NSv Proximitor Sensor.

• System Length: 7.0 meters (23.0 feet).

• Mounting Option: DIN mount.

• Agency Approval Option: Country specific (CN).

• Proximitor Sensor Material: A380 aluminum.

• Proximitor Sensor Weight: 255 g (9 oz).

Electrical Specifications

The 330980-71-CN accepts one non-contacting 3300 RAM or 3300 NSv Proximity Probe and Extension Cable.

Power Requirements:

• Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption.

• Requires -23 Vdc to -26 Vdc with barriers.

• Important Note: Operation at a more positive voltage than -23.5 Vdc can result in reduced linear range.

Supply Sensitivity:

• Less than 2 mV change in output voltage per volt change in input voltage.

Output Resistance:

• 50 Ω.

Mounting Configuration Options

The 330980-71-CN offers two mounting configurations.

High-Density DIN-Rail Installation:
The -71 option specifies DIN mount. Therefore, this model is optimized for DIN rail installation. This saves cabinet space and suits large systems with many sensors.

Traditional Panel Mount Configuration:
The sensor can also be panel mounted if desired. The thin design supports both installation methods.

RFI/EMI Immunity Features

The 330980-71-CN is highly immune to radio frequency interference.

Improved RFI/EMI immunity allows the sensor to achieve European CE mark approvals without special mounting considerations. This immunity also prevents nearby high frequency radio signals from adversely affecting the transducer system. Consequently, you can install it in fiberglass housings without adverse effects.

SpringLoc Terminal Strips

SpringLoc terminal strips require no special installation tools. They facilitate faster, highly robust field wiring connections. Therefore, installation time is reduced and long-term reliability is improved.

Temperature and Environmental Specifications

The 330980-71-CN withstands harsh industrial environments.

• Operating Temperature: -52°C to +100°C (-62°F to +212°F).

• Storage Temperature: -52°C to +105°C (-62°F to +221°F).

• Relative Humidity: 100% condensing, non-submersible when connectors are protected.

• Test Standard: Tested to IEC 68-2-3 damp heat.

System Accuracy Conditions

Unless otherwise noted, the following specifications apply. The 330980-71-CN is specified between 0°C and +45°C (+32°F to +113°F) at a maximum altitude of 2000 m. The test conditions include a -24 Vdc power supply, a 10 kΩ load, and a Bently Nevada supplied AISI 4140 steel target that is 31 mm (1.2 in) diameter or larger. The probe gap is set at 1.0 mm (40 mils).

Important Note: The system accuracy and interchangeability specifications do not apply when using a transducer system calibrated to any target other than a Bently Nevada AISI 4140 steel target.

Key Features

The 330980-71-CN offers several advantages for proximity measurement.

DIN Rail Mounting:
The -71 option specifies DIN mount. Therefore, it installs quickly on standard DIN rails without additional hardware.

Thin Profile Design:
Enables mounting in high-density DIN-rail installations. Alternatively, it suits traditional panel mount configurations. Consequently, installation flexibility is maximized.

Enhanced RFI/EMI Immunity:
Achieves European CE mark approvals without special mounting considerations. This immunity prevents adverse effects from nearby high frequency radio signals. Therefore, reliable operation near radios or wireless devices is assured.

SpringLoc Terminal Strips:
Require no special installation tools. They facilitate faster, highly robust field wiring connections. As a result, installation time and costs are reduced.

Wide Temperature Range:
Operates from -52°C to +100°C. Storage temperature extends to +105°C. Hence, the sensor suits extreme climate conditions.

100% Condensing Humidity Rating:
Tested to IEC 68-2-3 damp heat. The sensor operates in 100% condensing humidity when connectors are protected. However, it is not submersible.

A380 Aluminum Construction:
Provides durability in industrial environments. The material resists corrosion and mechanical stress.

Country Specific Approvals:
The -CN suffix indicates country specific agency approvals. Therefore, this model meets local regulatory requirements for the specified country.

Typical Applications

The 330980-71-CN suits various NSv proximity measurement applications.

• Axial position monitoring on steam turbines.

• Radial vibration measurement on gas compressors.

• Shaft eccentricity monitoring on hydro turbines.

• Differential expansion measurement on large rotating equipment.

• Thrust position monitoring in NSv-specific applications.

Installation Guidelines

Install the 330980-71-CN according to standard 3300 XL NSv proximity system practices. Mount the Proximitor Sensor on a DIN rail using the -71 option's DIN mount configuration.

Connect the 3300 RAM or 3300 NSv Proximity Probe and Extension Cable to the sensor input. The system length is 7.0 meters including the extension cable.

Connect power at -17.5 Vdc to -26 Vdc without barriers. For installations with intrinsic safety barriers, use -23 Vdc to -26 Vdc. Ensure the voltage does not exceed -23.5 Vdc positive side to avoid reduced linear range.

The SpringLoc terminal strips accept simple wire insertion. No special tools are required. Protect connectors from submersible conditions. The sensor is not submersible but operates in 100% condensing humidity when connectors are protected.

What is in the Box

Please inspect all items upon delivery.

• Bently Nevada 330980-71-CN NSv Proximitor Sensor.

• DIN rail mounting hardware.

• SpringLoc terminal strips (installed).

• Installation instruction manual.

Frequently Asked Questions (FAQ)

1. What is the system length of the 330980-71-CN?

The 330980-71-CN has a 7.0 meter (23.0 feet) system length. The -71 suffix in the part number indicates this length with DIN mount.

2. What types of probes work with this Proximitor Sensor?

The 330980-71-CN accepts one non-contacting 3300 RAM or 3300 NSv Proximity Probe and its extension cable.

3. What is the operating temperature range of this Proximitor Sensor?

The 330980-71-CN operates from -52°C to +100°C (-62°F to +212°F). Storage temperature ranges from -52°C to +105°C.

4. What power supply voltage does this sensor require?

The 330980-71-CN requires -17.5 Vdc to -26 Vdc without barriers. With barriers, it requires -23 Vdc to -26 Vdc. Operation above -23.5 Vdc may reduce linear range.

5. What does the -CN agency approval option mean?

The -CN suffix indicates country specific agency approvals. Therefore, the 330980-71-CN meets local regulatory requirements for the specified country.