3500/42M-09-00 | Bently Nevada Proximitor Seismic Monitor

4-channel monitor for proximity, velocity, acceleration. Made in USA. Reliable for rotating machines.

Product Overview

• Manufacturer: Bently Nevada
  • Model: 3500/42M-09-00
  • Type: Proximitor Seismic Monitor (3500/42M series)
  • Made in U.S.A.
• I/O Module Type: 09 = 128229-01
  • Description: Prox/Velom I/O Module with internal terminations
  • Transducer support: Prox/Accel, Velomitor, or HTVS
• Hazardous Area Approval: 00 = None

Technical Specifications

• Inputs
  • Channels: 1 to 4 (proximity / velocity / acceleration)
  • Input impedance: 10 kΩ (Proximitor & acceleration)
  • Transducer power: -24 Vdc
• Sensitivity options
  • Radial vibration: 3.94 or 7.87 mV/µm
  • Thrust & Eccentricity: same as radial
  • Differential expansion: 0.394 or 0.787 mV/µm
  • Acceleration: 10 mV/(m/s²) = 100 mV/g
  • Velocity: 20 / 5.8 / 4 mV/(mm/s) pk
• Outputs
  • Buffered transducer: coaxial per channel, 550 Ω
  • Recorder: 4 to 20 mA, load 0-600 Ω
  • Shaft absolute output: 300 Ω per group
• Accuracy (at +25°C)
  • Direct & Gap: ±0.33% typical, max ±1%
  • 1X/2X vector: ±0.33% typical
  • Smax: ±5% max
• Frequency response
  • Radial direct filter: 4-4000 Hz or 1-600 Hz
  • Gap filter: -3dB at 0.09 Hz
  • Acceleration filters: 4-pole high/low pass
• Power & environment
  • Power: 7.7 watts typical
  • Operating temp: 0 to +65°C
  • EMI/RFI immune for industrial use
• Dimensions & weight
  • Size: 241.3 x 24.4 x 241.8 mm
  • Weight: 0.91 kg (2.0 lb)

Installation & Care

• Plugs directly into 3500 rack – no extra cables
• Internal terminations reduce wiring mistakes
• Front LEDs: OK, TX/RX, Bypass for fast checks
• Hot-swappable – no shutdown needed
• Recorder outputs are short-circuit proof

Compatibility

• Fits Bently Nevada 3500 rack systems
• Works with Proximitor, Velomitor, accelerometers, HTVS sensors
• Compatible with standard 3500 communication modules

Certifications

• CE marked
• Designed to API 670
• No hazardous area approval (option 00 – safe area use)

Package, Warranty & Shipping

• Package includes: 1 x 3500/42M-09-00 monitor + digital guide
• 12-month warranty from shipment date
• Covers defects in materials and workmanship
• Fast dispatch: 12-24 hours after order
• Shipping carriers: FedEx, UPS, DHL with tracking

Expert Review – Senior Vibration Specialist

• “Rock-solid stability for critical turbines and compressors.”
• 4 channels save rack space and lower cost per point.
• Internal terminations reduce field wiring errors significantly.
• Accuracy meets API 670 requirements for most machines.
• Best choice for continuous monitoring in power plants and refineries.

Manager’s Insight – Reliability Engineer

• Genuine Bently Nevada avoids false trips and unplanned downtime.
• Hot-swap design cuts maintenance hours by 30%.
• Long-term spare parts availability protects your investment.
• Ideal for machines where one hour of downtime costs over $10k.

Suitable Equipment & Applications

• Steam turbines, gas turbines, centrifugal compressors
• Large fans, pumps, blowers, generators
• Motors with sleeve bearings, paper mill rollers
• Monitoring tasks:
  • Shaft vibration (radial / thrust)
  • Eccentricity & differential expansion
  • Casing acceleration and velocity (Velomitor)
  • Shaft absolute motion

Frequently Asked Questions (FAQ)

Q1: What is the difference between 3500/42-06-00 and 3500/42M-09-00?

The -09 version uses internal terminations only (no internal barriers). It supports Prox/Accel, Velomitor, or HTVS sensors. The -06 has internal barriers for hazardous areas.

Q2: Can I use this monitor with high-temperature Velomitor sensors?

Yes. The I/O type 09 supports HTVS (High Temperature Velomitor Sensor) directly. No extra converter needed.

Q3: How to ensure 12-month warranty coverage?

Keep the original purchase invoice. Warranty covers manufacturing defects. It does not cover misuse or field wiring errors. Contact us for RMA within 12 months.

Q4: What shipping options do you offer for urgent needs?

We ship within 12-24 hours after payment. Choose FedEx Priority, UPS Worldwide, or DHL Express. Tracking number provided same day.

Q5: Which spare parts should I buy alongside this monitor?

Keep one spare 3500/42M-09-00 module per 5 installed. Also stock Velomitor sensors (330400 series) and 3300 proximity probe cables.

Buying Guidance – Experienced User Tip

Choose 3500/42M-09-00 when you do not need internal safety barriers. This version works with standard Velomitor and HTVS sensors. It lowers cost if your plant is non-hazardous. Always verify your rack firmware supports 42M series.

Need help? Contact our engineers for configuration support. Genuine Bently Nevada guaranteed.