Product Introduction
The Bently Nevada 990-05-70-01-IN 990 Vibration Transmitter is designed for continuous monitoring of vibration levels in rotating machinery. It converts the dynamic vibration signal from compatible probes or sensors into a standard 4–20 mA output that can be easily integrated into distributed control systems (DCS), programmable logic controllers (PLC), or condition monitoring systems. This model is particularly suited for machinery protection and predictive maintenance, ensuring operators have reliable data for timely decision-making.
Product Advantages
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Provides real-time monitoring of vibration for critical and balance-of-plant machines.
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Outputs standard 4–20 mA signal, compatible with most control and monitoring systems.
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Compact and lightweight design for easy installation in tight spaces.
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Designed with industrial-grade reliability for use in harsh conditions.
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Reduces the need for complex monitoring equipment by delivering simplified, actionable data.
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Ensures improved machinery protection through early detection of abnormal vibration.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 990-05-70-01-IN |
| Product Type | Vibration Transmitter |
| Input Signal | Compatible with proximity probes / accelerometers |
| Output Signal | 4–20 mA proportional to vibration |
| Measurement Range | Configurable depending on application |
| Power Supply | 24 V DC (nominal) |
| Operating Temperature | -20 °C to +85 °C |
| Mounting | Panel or DIN rail |
| Dimensions | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
| Housing Protection | IP-rated industrial enclosure |
| Certifications | CE, CSA, and other industrial approvals |
Product Applications
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Monitoring pumps, compressors, fans, and motors in industrial facilities.
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Providing early warning detection of mechanical issues such as imbalance, misalignment, or bearing wear.
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Integration into plant control systems to automate shutdowns or alarms when vibration exceeds limits.
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Supporting predictive maintenance programs to reduce downtime and optimize machine performance.
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Ensuring machinery operates within safe vibration limits to extend service life and reliability.
FAQ
Q1: What type of output does the 990 vibration transmitter provide?
A1: It provides a standard 4–20 mA output proportional to the measured vibration level.
Q2: Can the transmitter interface directly with PLCs and DCS systems?
A2: Yes, the 4–20 mA output makes it fully compatible with most industrial PLCs and DCS.
Q3: Which vibration sensors are typically used with this transmitter?
A3: It is commonly used with Bently Nevada proximity probes and accelerometers for vibration monitoring.
Q4: Does the unit require external signal conditioning?
A4: No, the transmitter conditions the signal internally and outputs a scaled 4–20 mA signal.
Q5: What is the typical power supply requirement?
A5: The unit typically operates with a 24 V DC nominal power supply.
Q6: Can alarm functions be integrated with this transmitter?
A6: Yes, alarms can be set in the connected control system using the 4–20 mA signal levels.
Q7: Is the vibration measurement range adjustable?
A7: Yes, the range is configurable depending on the application and sensor type.
Q8: How does the transmitter handle high vibration conditions?
A8: It continuously outputs proportional current, allowing systems to trigger alarms or shutdowns if vibration exceeds limits.
Q9: What level of environmental protection does the housing provide?
A9: It features an industrial-grade IP-rated enclosure suitable for harsh environments.
Q10: Can the transmitter be installed on both new and existing equipment?
A10: Yes, it is designed for both retrofit applications and new installations with minimal modifications.
Recommended Models
| Model Number | Description |
|---|---|
| 990-05-70-02-IN | 990 Vibration Transmitter, alternate range |
| 990-05-70-03-IN | 990 Vibration Transmitter, high-sensitivity |
| 990-05-50-01-IN | 990 Vibration Transmitter, standard range |
| 990-05-90-01-IN | 990 Transmitter with extended features |
| 990-05-60-01-IN | 990 Transmitter with wide temp range |
| 990-05-80-01-IN | 990 Series transmitter with custom scaling |
Popular Models from the Same Brand
| Model Number | Description |
|---|---|
| 3500/42M | Proximitor/Seismic Monitor for vibration |
| 3500/32M | 4-Channel Relay Module |
| 330103 | Proximity Probe |
| 330130 | Extension Cable for proximity systems |
| 3300 XL 8 mm | Proximity Transducer System |
| 330400 | Velomitor Velocity Sensor |
| 1900/65A | Vibration Monitor for smaller machines |
| 3500/22M | System Keyphasor Module |
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