Product Overview

The Bently Nevada 330980-70-CN is an NSv Proximitor Sensor. This model shares similar features with those found in 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 sensor to achieve European CE mark approvals without any special mounting considerations. Furthermore, this RFI immunity prevents nearby high frequency radio signals from adversely affecting the transducer system. SpringLoc terminal strips on the Proximitor Sensor require no special installation tools. Consequently, they facilitate faster, highly robust field wiring connections.

Ordering Information Breakdown

The 330980-70-CN follows a specific ordering code structure. Understanding this code helps verify correct configuration.

• 330980: NSv Proximitor Sensor base model.

• 70: 7.0 meters (23.0 feet) system length, panel mount.

• CN: Country specific agency approvals.

General Specifications

The 330980-70-CN offers reliable signal conditioning for NSv proximity systems.

• Manufacturer: Bently Nevada.

• Model: 330980 - NSv Proximitor Sensor.

• Product Type: Proximitor Sensor.

• Proximitor Sensor Material: A380 aluminum.

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

Electrical Specifications

The 330980-70-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.

Reference Test Conditions

Unless otherwise noted, the following specifications apply under these conditions. The system uses a 3300 XL NSv Proximitor Sensor, extension cable, and probe between 0°C and +45°C (+32°F to +113°F). Additionally, the maximum altitude is 2000 m. The test setup includes a -24 Vdc power supply and a 10 kΩ load. A Bently Nevada supplied AISI 4140 steel target that is 31 mm (1.2 in) diameter or larger is required. The probe gap is set to 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.

Mounting Options

The 330980-70-CN offers two mounting configurations.

High-Density DIN-Rail Installation:
The thin design allows mounting in high-density DIN-rail installations. Consequently, this saves cabinet space and suits large systems with many sensors.

Traditional Panel Mount Configuration:
The -70 option specifies panel mount. Therefore, this model includes the necessary hardware for panel mounting.

RFI/EMI Immunity Features

The 330980-70-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. Hence, you can install it in fiberglass housings without adverse effects.

SpringLoc Terminal Strips

SpringLoc terminal strips require no special installation tools. They eliminate screw-type clamping mechanisms that can loosen. As a result, they facilitate faster, highly robust field wiring connections. Therefore, installation time is reduced and long-term reliability is improved.

Temperature and Environmental Specifications

The 330980-70-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.

• Tested to IEC 68-2-3 damp heat.

Agency Approvals

The -CN suffix indicates country-specific agency approvals. Unlike standard -00 (no approvals) or -05 (multiple approvals) options, this version is configured for specific country requirements. For details on which countries are included, please consult the factory or your local Bently Nevada representative.

Key Features

The 330980-70-CN offers several advantages for NSv proximity measurement.

Thin Profile Design:
Enables mounting in high-density DIN-rail installations. Alternatively, it suits traditional panel mount configurations. Therefore, 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. Consequently, 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 option configures the sensor for specific country requirements. Thus, it simplifies local regulatory compliance.

Typical Applications

The 330980-70-CN suits various turbomachinery monitoring applications.

• Radial vibration monitoring on steam turbines.

• Axial position measurement on gas compressors.

• Shaft eccentricity monitoring on hydro turbines.

• Differential expansion measurement on large rotating equipment.

• Thrust position monitoring where country-specific approvals are required.

Installation Guidelines

Install the 330980-70-CN according to standard 3300 XL NSv proximity system practices. Mount the Proximitor Sensor in a panel mount configuration using the -70 option's hardware.

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 330980-70-CN NSv Proximitor Sensor.

• Panel mount hardware.

• SpringLoc terminal strips (installed).

• Installation instruction manual.

Frequently Asked Questions (FAQ)

1. What is the system length of the 330980-70-CN?

The 330980-70-CN has a 7.0 meter (23.0 feet) system length. The -70 suffix in the part number indicates this length with panel mount.

2. What is the difference between NSv and standard Proximitor Sensors?

The NSv Proximitor Sensor is designed for use with 3300 RAM and 3300 NSv probes. It has similar features to the 3300 XL 8 mm Proximitor Sensor but with different probe compatibility.

3. What is the operating temperature range of this sensor?

The 330980-70-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 330980-70-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. Unlike standard approval options, this version is configured for specific country requirements. Please consult Bently Nevada for details on which countries are included.