Bently Nevada 140072-04 | 3500/45 Position Monitor

Description

The 140072-04 3500/45 Position Monitor is a 4-channel module designed for monitoring the position of machinery components. It accepts input signals from various types of sensors, including:

• Non-contact proximity probes.
• Rotary position transducers (RPTs).
• Linear Variable Differential Transformers (LVDTs) for both AC and DC.
• Rotary potentiometers.

The module processes these input signals and compares them to user-programmable alarm setpoints. Each channel can be configured for specific monitoring functions such as:

• Axial position (shaft displacement relative to a thrust bearing).
• Differential expansion (both standard and custom configurations).
• Case expansion.
• Valve position monitoring.

Note: Channels can be paired, allowing each pair to perform different monitoring functions simultaneously.

---

Technical Specifications

Inputs:

• Accepts 1 to 4 input signals.
• Input Impedance:
  • 1 MΩ (DC LVDT inputs).
  • 10 kΩ (Proximitor or RPT inputs).
  • 137 kΩ (AC LVDT inputs).
  • 200 kΩ (rotary potentiometer inputs).

Power Consumption:

• Typical values:
  • 7.7 W for RPT signals.
  • 8.5 W for AC LVDT signals.
  • 5.6 W for rotary potentiometer signals.

Sensor Sensitivity:

• Axial Position:
  • 3.94 mV/mm (100 mV/mil) or 7.87 mV/mm (200 mV/mil).
• Differential Expansion:
  • 0.394 V/mm (10 mV/mil) or 0.787 V/mm (20 mV/mil).
• Case Expansion:
  • Range from 0.05 V/mm to 0.22 V/mm depending on the sensor type.
• Valve Position:
  • Rotary potentiometer: 41 mV/degree.
  • RPT: 140 mV/degree, 70 mV/degree, or 50 mV/degree.

Outputs:

• Front Panel Indicators:
  • OK LED: Indicates proper operation.
  • TX/RX LED: Indicates communication activity.
  • Bypass LED: Indicates bypass mode.
• Buffered Sensor Outputs:
  • Coaxial connectors for each channel.
  • Protected against short circuits.
• Recorder Outputs:
  • +4 to +20 mA proportional to full-scale range.
  • Voltage Compliance: 0 to +12 Vdc across a 0-600 Ω load.

Environmental Limits:

• 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: Up to 95%, non-condensing.

Physical Characteristics:

• Module Dimensions (H x W x D): 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in).
• Weight: 0.91 kg (2.0 lbs).

---

Contact Us

• Phone: +86-15915488782
• Email: uma@meloauto.com
• WhatsApp: +8615915488782
• Business Hours: 24/7 service
• Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

Let us help you find the automation parts you need with reliable quality and dedicated support!