Product Details
The Bently Nevada 3500/70-01-02 Recip Impulse/Velocity Monitor is a four-channel machinery protection module engineered specifically for reciprocating compressor solutions, monitoring crankcase and crosshead vibration. This configuration combines the main monitor board with a -01 Prox/Velom I/O module featuring internal terminations, alongside a -02 ATEX/IECEx hazardous area approval option. It conditions incoming signals from seismic or proximity transducers to evaluate mechanical parameters against user-programmable alarm setpoints, safeguarding critical reciprocating machinery.
Channel Functions and Signal Processing
The module operates across four independent channels configured in pairs, allowing users to execute up to two distinct measurement functions simultaneously per channel group. Supported programmable functions include impulse acceleration, reciprocating acceleration, reciprocating velocity, and low-frequency reciprocating velocity.
Incoming waveforms pass through specialized filter blocks and multi-stage integration or detection algorithms to isolate mechanical impacts and piston rod events from background electrical noise.
Alarm Management and System Integration
Real-time measurement data is evaluated continuously against software-configured Alert and Danger thresholds to drive protection relays and warn plant operators of mechanical wear or failure risks. In addition to discrete alarm states, the unit supplies proportional +4 to +20 mA current values for each channel to interface directly with external control or data recording systems.
Front-panel coaxial connectors provide short-circuit-protected buffered transducer outputs for diagnostic analysis, while status LEDs indicate operational readiness and communication traffic.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 3500/70-01-02 |
| Brand | Bently Nevada |
| Series | 3500 Machinery Protection System |
| Product Type | Recip Impulse/Velocity Monitor Module |
| Number of Channels | 4 channels |
| Supported Measurements | Impulse Acceleration, Recip Acceleration, Recip Velocity, Low Frequency Recip Velocity |
| I/O Module Type | -01 Prox/Velom I/O Module with Internal Terminations |
| Agency Approval Option | -02 ATEX, IECEx (Zone 2) |
| Transducer Power Supply | -22 Vdc minimum (40 mA maximum) |
| Recorder Output | +4 to +20 mA proportional to full scale (600 $\Omega$ maximum load) |
| Typical Power Consumption | 7.7 W |
| Monitor Module Dimensions | 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) |
| Monitor Module Weight | 0.91 kg (2.0 lb) |
Frequently Asked Questions
Q: What primary machine types utilize the 3500/70-01-02 monitor module?
A: This module is designed for reciprocating compressor applications to monitor mechanical integrity across compressor crankcases and crossheads.
Q: Can the four channels run different measurement algorithms simultaneously?
A: Yes, channels are programmed in pairs, enabling channel groups 1-2 and 3-4 to execute different or identical vibration monitoring functions concurrently.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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