Product Overview
3500/45-05-00 is a Position Monitor from Bently Nevada. It belongs to the 3500 series. This module accepts AC LVDT inputs with internal terminations. It monitors thrust, differential expansion, case expansion, and valve position. The monitor provides accurate, reliable data for rotating machinery protection.
This monitor uses a 3400 Hz sine wave transducer power supply. It offers recorder outputs (+4 to +20 mA) proportional to full-scale values. The module operates in harsh environments from -30°C to +65°C. It is a key component for predictive maintenance and machine protection.
Technical Specifications
| Brand | Bently Nevada |
| Model | 3500/45-05-00 |
| Type | AC LVDT Position I/O Module with Internal Terminations |
| Power Consumption | 8.5 W typical (AC LVDT I/O) |
| Input Impedance | 137 kΩ (AC LVDT inputs) |
| Sensitivity (AC LVDT) | 28.74 mV/V/mm, 15.35 mV/V/mm, or 9.45 mV/V/mm |
| Recorder Output | +4 to +20 mA, 0–600 Ω load |
| Resolution | 0.3662 µA per bit |
| Accuracy | ±0.33% of full-scale (typical), ±1% max |
| Frequency Response | Direct: -3 dB at 1.2 Hz; Gap: -3 dB at 0.41 Hz |
| Operating Temperature | -30°C to +65°C (-22°F to +150°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 95% non-condensing |
| Transducer Supply | 2.3 Vrms 3400 Hz sine wave (AC LVDT) |
Key Features & Benefits
- Multi-channel input: Accepts 1 to 4 signal inputs for versatile monitoring.
- High accuracy: Within ±0.33% of full-scale ensures reliable measurements.
- Dual filtering: Direct and gap filter options for different applications.
- Built-in diagnostics: OK, TX/RX, and Bypass LEDs for status indication.
- Recorder outputs: Short-circuit protected, no effect on monitor operation.
- Wide environmental tolerance: Operates in extreme temperatures and humidity.
Installation & Compatibility
- Firmware required: 3500/20 RIM rev. G, Config Software 2.41 or later.
- For RPT valve position: Requires 3500 Config Software 3.00 or greater.
- Physical dimensions: 241.3 x 24.4 x 241.8 mm (9.50 x 0.96 x 9.52 in).
- Weight: 0.91 kg (2.0 lb).
- Mounting: Fits standard 3500 rack, easy plug-in installation.
Diagnostic Capabilities
- Monitors thrust position, differential expansion, and case expansion.
- Supports complementary input differential expansion (CIDE) and ramp inputs.
- Valve position monitoring with AC LVDT, RPT, or rotary potentiometer.
- LED indicators for OK, communication, and bypass mode.
- Recorder outputs allow trend analysis and remote monitoring.
Typical Applications
- Steam and gas turbine thrust position monitoring.
- Compressor differential expansion measurements.
- Valve position feedback in critical control loops.
- Case expansion monitoring for large rotating equipment.
- Predictive maintenance in power generation, oil & gas, and heavy industry.
Frequently Asked Questions (FAQ)
- Q: What transducer types are supported?
A: AC LVDT, DC LVDT, Proximitor, RPT, and Rotary Potentiometer (with different I/O versions). - Q: What is the update rate for recorder outputs?
A: 100 ms or less. - Q: Can this module work with existing 3500 racks?
A: Yes, it is fully compatible with standard 3500 systems. - Q: Is the recorder output isolated?
A: Short circuits on recorder outputs do not affect monitor operation.
Why Buy From Oiltech Controls?
- Over 15 years of expertise in industrial automation spares.
- Global shipping support with FedEx, UPS, and DHL options.
- Tested industrial surplus and refurbished items available.
- 12-month warranty on all products.
- Technical verification performed before shipment.
- Support for obsolete control systems.
Contact Information: info@oiltechcontrols.com | +86 158 8020 0923
Packaging & Delivery
New & original in factory packing. Shipping via FedEx, UPS, or DHL. Tracking number provided.
Certification & Warranty
12-month factory warranty. Agency approval: None (00 option). Condition: New & Original.
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Original Source: https://www.oiltechcontrols.com/
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