Product Short Description
This module adopts full electrical isolation and internal termination wiring design, collects standard industrial 4–20 mA DC analog signals from field process sensors including pressure transmitters, temperature transmitters, flow transmitters and liquid level transmitters. It completes professional signal conditioning, isolation, filtering and transmission, and delivers high-precision measured parameters to the internal monitor unit for real-time monitoring, alarm judgment and machinery protection interlock control. It fully complies with API 670 international machinery protection standards, features complete galvanic isolation, plug-in rack structure and industrial rugged hardware, and serves as the standard process parameter acquisition unit for integrated machinery vibration & process comprehensive monitoring systems.
Description
Basic Identification Parameters
- Brand: Bently Nevada
- Part Number: 136294-01
- System Matching Model: 3500/62 Process Variable Monitor
- Product Type: 6-Channel Isolated 4–20 mA Analog I/O Module with Internal Terminations
- Origin: United States
- Product Weight: 0.20 kg
- Factory Warranty Period: 12 months original factory warranty
- Overall Dimensions: 241.3 mm × 24.4 mm × 99.1 mm
- Mounting Mode: Standard 19-inch EIA industrial rack plug-in installation, installed in rear dedicated slots of 3500 system rack
- Protection Grade: IP20
- Certifications: CE, UL, CSA, ATEX/IECEx Hazardous Area Certification, API 670 Compliant
Electrical Specifications
- System Power Supply: 18–36 V DC, supplied by 3500 main rack power supply
- Total Power Consumption: ≤4.2 W
- Input Channel Quantity: 6 independent fully isolated analog input channels
- Supported Input Signal: Standard industrial 4–20 mA DC current signal
- Signal Isolation Level: 2500 Vrms channel-to-channel & channel-to-system bus galvanic isolation
- Measurement Accuracy: ±0.5% Full Scale
- Input Impedance: 250 Ω per channel
- Internal Output Signal: ±10 V DC analog signal transmitted to monitor processing unit
- Signal Response Time: ≤1 ms
- Wiring Mode: Built-in internal pluggable green screw termination terminals, no external termination module required
Measurement & Environmental Specifications
- Signal Update Rate: 10 Hz per channel
- Configurable Monitoring Parameters: Pressure, temperature, flow rate, liquid level, differential pressure and other industrial process variables
- Operating Temperature Range: -40 ℃ to +70 ℃
- Storage Temperature Range: -55 ℃ to +85 ℃
- Operating Humidity: 0%–95% RH, non-condensing
- Shock Resistance: 15 g peak anti-vibration performance
- Electromagnetic Compatibility: Fully meets industrial EMC anti-interference standards, adapts to high EMI industrial sites
Core Functional Features
- 6 Independent Fully Isolated Input Channels
Six completely galvanic isolated channels realize simultaneous multi-process parameter acquisition; each channel works independently without mutual interference.
- Internal Termination Integrated Design
Built-in integrated wiring terminals eliminate external termination modules, simplify field wiring, reduce fault points and lower installation & maintenance costs.
- High-Performance Galvanic Isolation Architecture
Complete channel-to-channel and channel-to-system isolation completely suppress ground loop noise, common-mode interference and surge impact, ensure stable signal transmission in complex industrial environments.
- Universal 4–20 mA Signal Compatibility
Perfectly matches all standard industrial 4–20 mA process transmitters, supports pressure, temperature, flow, level multi-parameter unified monitoring.
- Programmable Alarm & Danger Setpoints
Supports independent alert and danger trip setpoint configuration for all channels via official 3500 rack configuration software, realizes automatic process interlock protection.
- High-Precision Signal Conditioning Circuit
Built-in professional filtering, amplification and linearization circuits optimize signal quality and maintain stable high measurement accuracy.
- Plug-in Hot-Swap Structure
Supports online plug and replacement without powering down the entire monitoring system, greatly reduces maintenance downtime.
- Complete Self-Diagnosis & Fail-Safe Logic
Built-in channel fault detection circuit automatically identifies sensor disconnection, signal loss and module fault; enters safe state immediately under abnormal conditions to avoid false alarms and misoperations.
Applicable Application Scenarios
- Power generation industry: Steam turbines, gas turbines, turbo-generator units, combined cycle power plants
- Petroleum & natural gas industry: Offshore platforms, natural gas pipeline compressor stations
- Petrochemical industry: Centrifugal compressors, process pumps, fans, chemical production equipment
- Chemical industry: Large high-speed compressors, reciprocating machinery, high-speed gearboxes
- Metallurgy, cement & mining industry: Rotary kilns, grinding mills, large fans, heavy rotating equipment
- Water conservancy & wastewater treatment: Large vertical pumps, circulating water pump units
- Marine industry: Ship propulsion machinery and auxiliary rotating power equipment
- Hazardous area industrial sites with ATEX/IECEx certification requirements
- OEM machinery manufacturing and industrial predictive maintenance condition monitoring systems
System Compatibility
- Fully compatible with Bently Nevada 3500 series full monitoring system: 3500/05 rack, 3500/15 power supply, 3500/20 system interface module, 3500/62 Process Variable Monitor module
- Perfectly matches all standard industrial 4–20 mA process transmitters
- Seamlessly connects to System 1 diagnostic analysis platform, PLC, DCS and SCADA control systems
- Compatible with official 3500 rack configuration software V3.3 and above versions
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