Product Details
The Bently Nevada 3500/63 Hazardous Gas Monitor (Part Number 163179-04) is a six-channel safety-system module designed to measure combustible gas concentrations, such as hydrogen and methane, as a percentage of the lower explosive level (LEL). It interfaces with heated catalytic-bead gas sensors to evaluate environmental conditions within enclosed or confined industrial spaces, such as gas turbine enclosures and compressor skids, issuing tiered alarms to protect personnel and equipment from explosion hazards.
Sensor Interface and Signal Conditioning
The module supports 3-wire heated catalytic-bead gas sensors utilizing a single-arm resistance bridge configuration across its six independent channels. It delivers a regulated constant current to each sensor element while monitoring input impedance and line integrity to detect open circuits in field wiring or sensor elements.
Incoming catalytic signals are processed to calculate LEL percentages, providing continuous surveillance and rapid response capabilities in harsh operational environments.
Alarm Management and System Outputs
Real-time gas concentrations are evaluated continuously against programmable Alert and Danger over-alarm setpoints configured via software. The unit features adjustable time delays ranging from 1 to 60 seconds to prevent nuisance trips during transient gas puffs.
Each channel provides a proportional +4 to +20 mA recorder output representing 0 to 100% full scale, alongside front-panel LED indicators displaying operational status, communication traffic, calibration modes, and channel bypass states.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 3500/63 163179-04 |
| Brand | Bently Nevada |
| Series | 3500 Machinery Protection System |
| Product Type | Hazardous Gas Monitor Module |
| Number of Channels | 6 channels |
| Supported Sensors | Heated catalytic-bead gas sensors (Hydrogen and Methane) |
| Measurement Range | 0 to 100% LEL (Lower Explosive Level) |
| Recorder Output | +4 to +20 mA proportional to full scale (600 $\Omega$ maximum load) |
| External Transducer Power | +24 Vdc @ 1.8 A minimum |
| Power Consumption | 7.0 W typical |
| Operating Temperature | -30 deg C to +65 deg C (-22 deg F to +150 deg F) |
| Dimensions | 12.6 cm x 12.4 cm x 2.2 cm |
| Country of Origin | USA |
Frequently Asked Questions
Q: What sensor types are compatible with the 3500/63 163179-04 monitor?
A: This module is designed specifically for use with 3-wire heated catalytic-bead gas sensors monitoring combustible gases like hydrogen and methane.
Q: Can this module be deployed in a redundant configuration?
A: Yes, the 3500/63 monitors can be utilized in either simplex or Triple Modular Redundant (TMR) rack configurations for critical safety applications.
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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