Product details
Overview
The Bently Nevada 990-05-70-02-CN is a 2-wire vibration transmitter designed for industrial monitoring applications. Manufactured in the USA, this sensor is used for proximity measurements and offers precise, reliable data for machinery monitoring systems. With an adjustable full-scale range of 0-5 mils (0-125 Āµm pp) and a system length of 7.0 meters (23 feet), the Bently Nevada 990-05-70-02-CN is ideal for a variety of machinery health monitoring and vibration analysis needs.
Technical Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Bently Nevada |
| Product No. | 990-05-70-02-CN |
| Product Type | 2-Wire Vibration Transmitter |
| Made in | USA |
| Full-scale Range | 0-5 mils pp (0-125 Āµm pp) |
| System Length | 7.0 meters (23.0 feet) |
| Mounting Type | Bulkhead screws (Option 02) |
| Agency Approval | Country Specific (Option CN) |
| Minimum Target Size | 9.5 mm (0.375 in) diameter |
| Weight | 0.43 Kg |
| Frequency Response | 5 Hz to 6,000 Hz Ā±0.3 dB |
| Temperature Stability | Ā±10% from 0Ā°C to +70Ā°C (+32Ā°F to +158Ā°F) |
| Proximity Output Range | 1.4 mm (55 mils) linear range, starting from 0.25 mm (10 mils) |
| Proximity Output Scale Factor | 7.87 mV/Āµm (200 mV/mil) Ā±6.5% typical |
| Probe Gap | 0.5 to 1.75 mm (20 to 55 mils) |
| Maximum Loop Resistance | 1,000 ā¦ (including cable at 35 Vdc) |
| Signal Output | 4-20 mA over specified full-scale range in 2-wire configuration |
| Power Supply | +12 to +35 Vdc input at transmitter terminal |
| Loop Accuracy | Ā±1.5% over full-scale range (additional to prox output incremental factor) |
| Zero/Span | Non-interacting external adjustments |
| Not OK Condition | Signal output drops to <3.6 mA within 100 Āµs; restored in 2-3 seconds |
| Application | Machinery health monitoring, vibration analysis, proximity measurement |
Brand, Model & Suffix Meaning
- Brand: Bently Nevada, a trusted name in vibration and condition monitoring.
- Model: 990-05-70-02-CN
- Suffix Meaning:
- 990: Product series for vibration monitoring.
- 05: Indicates the full-scale range (0-5 mils).
- 70: System length of 7.0 meters (23 feet).
- 02: Bulkhead screw mounting option.
- CN: Country-specific agency approvals.
FAQ
Q1: What is the maximum probe gap for this vibration transmitter?
A1: The probe gap should be between 0.5 mm and 1.75 mm (20 to 55 mils) for optimal performance.
Q2: How do I ensure accurate measurement with this sensor?
A2: The sensor must be aligned with a target surface at a minimum size of 9.5 mm in diameter. Make sure the sensor is installed within the specified temperature range.
Q3: Can I use this transmitter with a grounded test equipment?
A3: Yes, but you will need the 122115-01 Test Adapter for signal isolation when using grounded, AC-powered test equipment.
Q4: What is the temperature range for this product?
A4: The transmitter remains stable within Ā±10% of its incremental scale factor from 0Ā°C to +70Ā°C (+32Ā°F to +158Ā°F).
Q5: How long is the maximum cable length for sensor output?
A5: The maximum cable length for the Proximitor sensor output is 3 meters (10 feet).
For more detailed information:990 Vibration Transmitter Datasheet
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