Specification of BENTLY NEVADA 990-05-70-02-01 Vibration Transmitter
| General Information | |
Manufacturer | Bently Nevada |
Product No. | 990-05-70-02-01 |
| Product Type | Vibration Transmitter |
| Full-scale | 0-5 mils pp (0-125 μm pp) |
| System Length | 70 = 7.0 metres (23.0 feet) |
| Mounting | 02 = Bulkhead screws |
| Agency Approval | 01 = CSA Division 2 |
Input Compatibility | Specifically designed to work with the 3300 NSv proximity probe and its matching extension cable |
Output Signal | 4–20 mA proportional to peak-to-peak vibration |
Features of 990-05-70-02-01 Vibration Transmitter
Integrated Proximity Sensor: Integrates sensor and transmitter functions, eliminating the need for an external proximity unit.
Proximity Probe Compatibility: Designed to receive input signals from the 3300 NSv proximity probe and its accompanying extension cable.
Diagnostic Outputs: Includes "PROX OUT" and "COM" terminals and a coaxial connector, providing dynamic vibration and gap voltage signals for field diagnostics.
Safe and Reliable Circuitry: Anomaly/Signal Suppression: Forces the output below 3.6 mA to prevent false alarms if a probe malfunction or loose connection is detected.
Power-On Suppression: Holds the output low for 2-3 seconds after power-on to eliminate signal errors caused by line voltage transients.
Field Adjustability: Independent zero and range potentiometers below the label allow for precise loop calibration.
Rugged and Durable: Enhanced construction makes it suitable for high humidity environments (up to 100%). (100% condensation)
Test Input Pins: Allows the use of a function generator as an input for rapid verification of the loop signal output.
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990-05-70-02-01 Vibration Transmitter Images
990-05-70-02-01 Vibration Transmitter
990-05-70-02-01 Vibration Transmitter
990-05-70-02-01 Vibration Transmitter
990-05-70-02-01 Vibration Transmitter
Bently Nevada Vibration Transmitter FAQ
1. What is the primary function of the Bently Nevada 990-05-70-02-01 in a condition monitoring system?
The Bently Nevada Vibration Transmitter is a 2-wire, loop-powered vibration transmitter that integrates the functions of a Proximitor sensor and signal conditioner into a single unit. Bently Nevada Vibration Transmitter measures radial vibration of rotating shafts and converts it into a standardized 4–20 mA signal, allowing direct integration into a PLC or DCS without requiring specialized monitoring rack hardware.
The Bently Nevada Vibration Transmitter is a 2-wire, loop-powered vibration transmitter that integrates the functions of a Proximitor sensor and signal conditioner into a single unit. Bently Nevada Vibration Transmitter measures radial vibration of rotating shafts and converts it into a standardized 4–20 mA signal, allowing direct integration into a PLC or DCS without requiring specialized monitoring rack hardware.
2. Which specific sensor components are compatible with the Bently Nevada 990-05-70-02-01?
To ensure measurement accuracy and signal integrity, the Bently Nevada 990-05-70-02-01 must be used specifically with the 3300 NSv proximity probe and its matching extension cable. Use of non-NSv probes will result in incorrect scale factors and non-linear output.
To ensure measurement accuracy and signal integrity, the Bently Nevada 990-05-70-02-01 must be used specifically with the 3300 NSv proximity probe and its matching extension cable. Use of non-NSv probes will result in incorrect scale factors and non-linear output.
3. How does the Bently Nevada 990-05-70-02-01 handle hardware faults or probe failures?
The Bently Nevada 990-05-70-02-01 features an integrated "Not OK" signal defeat circuit. If the transmitter detects a fault—such as a broken probe wire or a loose connection—the 4–20 mA output is automatically clamped below 3.6 mA. Bently Nevada Vibration Transmitter allows the control system to distinguish between a "zero vibration" state and a hardware failure, preventing false machine trips.
The Bently Nevada 990-05-70-02-01 features an integrated "Not OK" signal defeat circuit. If the transmitter detects a fault—such as a broken probe wire or a loose connection—the 4–20 mA output is automatically clamped below 3.6 mA. Bently Nevada Vibration Transmitter allows the control system to distinguish between a "zero vibration" state and a hardware failure, preventing false machine trips.
4. What is the significance of the "PROX OUT" terminal on the Bently Nevada 990-05-70-02-01?
The Bently Nevada 990-05-70-02-01 includes a "PROX OUT" coaxial connector and terminal. This provides a raw, dynamic buffered vibration signal and gap voltage. Maintenance teams can connect a portable vibration analyzer or oscilloscope to this port to perform high-level diagnostics, such as orbit analysis or FFT frequency analysis, without interrupting the 4–20 mA loop.
The Bently Nevada 990-05-70-02-01 includes a "PROX OUT" coaxial connector and terminal. This provides a raw, dynamic buffered vibration signal and gap voltage. Maintenance teams can connect a portable vibration analyzer or oscilloscope to this port to perform high-level diagnostics, such as orbit analysis or FFT frequency analysis, without interrupting the 4–20 mA loop.
5. What are the electrical power requirements and installation constraints for the Bently Nevada 990-05-70-02-01?
The Bently Nevada 990-05-70-02-01 operates on a loop voltage of +12 to +35 VDC. Bently Nevada Vibration Transmitter is designed for a total system length of 7.0 meters (23.0 feet); exceeding or shortening this specific cable length will negatively impact the calibration. Additionally, the 02-01 suffix indicates this unit is configured for bulkhead screw mounting and carries CSA/NRTL/C agency approvals for hazardous area use.
The Bently Nevada 990-05-70-02-01 operates on a loop voltage of +12 to +35 VDC. Bently Nevada Vibration Transmitter is designed for a total system length of 7.0 meters (23.0 feet); exceeding or shortening this specific cable length will negatively impact the calibration. Additionally, the 02-01 suffix indicates this unit is configured for bulkhead screw mounting and carries CSA/NRTL/C agency approvals for hazardous area use.
6. Can the Bently Nevada 990-05-70-02-01 be calibrated in the field?
Yes. Under the protective label of the Bently Nevada 990-05-70-02-01, there are non-interacting "Zero" and "Span" potentiometers. Bently Nevada Vibration Transmitter allow technicians to perform fine-tuned loop calibrations to ensure the 4–20 mA output accurately reflects the 0–5 mil (0–125 µm) peak-to-peak vibration range of the machinery.
Yes. Under the protective label of the Bently Nevada 990-05-70-02-01, there are non-interacting "Zero" and "Span" potentiometers. Bently Nevada Vibration Transmitter allow technicians to perform fine-tuned loop calibrations to ensure the 4–20 mA output accurately reflects the 0–5 mil (0–125 µm) peak-to-peak vibration range of the machinery.
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