Excellent PLC
Product Introduction
The Bently Nevada 990-05-70-03-RU 990 Vibration Transmitter is a robust and reliable solution for continuous machinery vibration monitoring. It converts the dynamic vibration signal from proximity probes or accelerometers into a standard 4–20 mA output, making it directly compatible with process control and automation systems such as DCS or PLC platforms.
This transmitter is designed for plant operators who require accurate vibration measurements without the complexity of installing full monitoring systems. With its compact size, durability, and proven reliability in harsh industrial environments, the 990 series ensures early detection of mechanical issues like imbalance, misalignment, and bearing wear.
Product Parameters
| Parameter | Specification |
|---|---|
| Model | Bently Nevada 990-05-70-03-RU |
| Series | 990 Vibration Transmitter |
| Input Type | Proximity probe or accelerometer |
| Output Signal | 4–20 mA proportional to vibration |
| Frequency Range | 10 Hz to 1 kHz (typical) |
| Power Supply | 18–36 V DC |
| Operating Temperature | -35 °C to +85 °C |
| Dimensions | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
| Mounting | DIN-rail or panel mount |
| Certifications | CE, CSA, ATEX (varies by model) |
Product Applications
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Rotating Machinery Monitoring – Compressors, turbines, pumps, fans, and motors.
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Process Industries – Oil & gas, petrochemicals, and refining plants.
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Power Generation – Steam turbines, gas turbines, and generators.
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Pulp and Paper – Monitoring rollers and critical drive systems.
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Mining and Metals – Crushers, mills, and other rotating equipment.
Product Advantages
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Direct Integration – Standard 4–20 mA output easily connects to DCS/PLC systems.
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Early Fault Detection – Identifies imbalance, misalignment, and bearing issues at an early stage.
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Compact and Rugged – Withstands harsh industrial conditions and requires minimal space.
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Low Maintenance – Solid-state design reduces the need for frequent servicing.
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Versatility – Compatible with various sensor inputs, suitable for many industrial applications.
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Cost-Effective – Provides essential vibration monitoring without the complexity of a full condition monitoring system.
FAQ
Q1: What type of sensors can be connected to the 990-05-70-03-RU transmitter?
A1: It supports proximity probes and accelerometers, depending on the specific machine monitoring requirements.
Q2: How is the 4–20 mA signal scaled in relation to vibration levels?
A2: The scaling is configured so that 4 mA represents zero vibration, and 20 mA corresponds to the full-scale vibration limit set during installation.
Q3: Can this transmitter filter out high-frequency noise?
A3: Yes, it includes built-in filtering to focus on the relevant vibration frequency range and reject unwanted electrical or mechanical noise.
Q4: Is the transmitter loop-powered or does it require a separate power supply?
A4: It typically operates on loop power within the 18–36 V DC range, simplifying wiring.
Q5: What is the accuracy of the 4–20 mA output signal?
A5: The accuracy is generally within ±1% of the configured full-scale range, ensuring reliable monitoring data.
Q6: Can the transmitter be calibrated in the field?
A6: Yes, calibration can be performed through standard procedures to ensure measurement accuracy.
Q7: How does it behave under fluctuating temperatures?
A7: The design compensates for temperature effects, maintaining stable and accurate output in a wide operating temperature range.
Q8: What is the typical response time of the transmitter?
A8: The response time is fast, generally under 200 ms, allowing real-time detection of abnormal vibration conditions.
Q9: Is it suitable for hazardous area installations?
A9: Certain variants are certified for hazardous environments (e.g., ATEX, CSA), but certification should be verified for the RU version.
Q10: Can it monitor both radial and axial vibration?
A10: Yes, when paired with suitable probes, it can be used to monitor radial shaft vibration or axial displacement.
Same-Series or Related Models
| Model | Description |
|---|---|
| 990-05-70-01-IN | Vibration transmitter, India regional configuration |
| 990-05-70-02-05 | Vibration transmitter, general-purpose configuration |
| 990-05-70-01-CN | Vibration transmitter, China regional configuration |
| 990-05-50-03-00 | Vibration transmitter with extended input options |
| 990-04-70-01-007 | Compact vibration transmitter, special configuration |
| 990-04-50-01-CN | Standard vibration transmitter, China configuration |
Popular Models from the Same Brand
| Model | Description |
|---|---|
| 330103-00-05-10-02-05 | Proximity probe for shaft vibration measurement |
| 3500/22M | Transient Data Interface module for 3500 system |
| 3500/42M | Proximitor/Seismic monitoring module |
| 3500/32M | Relay module for machine protection |
| 330180-51-05 | Extension cable for proximity probes |
| 3300 XL 8 mm | Proximitor sensor system |
| 330400 | Velomitor velocity transducer |
| 330850-90-05 | Accelerometer for machine vibration monitoring |
