Bently Nevada 3500/62 136294-01 Process Variable Monitoring Module

I. Basic Identification and Structural Composition
Brand Ownership: Bently Nevada (now part of Baker Hughes), belonging to the core component of the classic 3500 series TSI rotating machinery protection system
Number Interpretation
3500/62: Main product model, 6-channel process variable monitoring module;
136294-01: Order number for the accompanying terminal block card, used in combination with the pre-treatment card (typical pre-card number 163179-03), replacement procurement requires matching of the front and rear cards;
Full model example: 3500/62-03-00/3500/62-05-00, the suffix represents the channel configuration version.
Hardware Structure: Front processing card + Posterior terminal block card modular rack-mounted design, compatible with 3500 standard rack slots.

Core Electrical and Performance Parameters Table
Parameter Categories Detailed Specifications
Number of Channels 6 independent isolated analog input channels
Supported Signals Isolated 4-20mA current, ±10V DC voltage (compatible with industrial standard transmitters)
Input Impedance Current mode ≈ 50Ω, Voltage mode ≈ 1MΩ
Measurement Accuracy Reading error ±0.02% ±2LSB, Full-scale accuracy ±0.1% FS
Sampling Rate 1 time per second for single channel
Alarm Capability Each channel supports four levels of alarms: high/low, high-high/low-low. Customizable alarm dead zone and delay
Redundancy Feature Supports TMR triple redundancy configuration (three cards, 2 out of 3 voting), suitable for high-level protection scenarios of plant units
Operating Temperature Range -20℃ to +50℃, suitable for harsh conditions in power plants and petrochemical plants

Main Functions
Process Parameter Collection and Protection: Continuously collects process analog quantities such as pressure, temperature, flow rate, liquid level, and unit load, and compares with preset thresholds to trigger alarms and shut down the unit;
Signal Isolation and Conditioning: Built-in channel isolation circuit to suppress common-mode interference from on-site frequency converters and motors;
System Interconnection: After connecting to the 3500 rack, it can interconnect with the system relay module to output interlock instructions, and the data can be uploaded to the upper-level monitoring platform;
Configuration Flexibility: Through the official rack configuration software, switch between current/voltage input modes and modify alarm thresholds.

Typical Application Scenarios
Power plants / hydropower turbine units, generator units for TSI unit protection;
Large centrifugal compressors and industrial pump groups in petrochemical plants for process quantity monitoring;
Large fans and heavy-load rotating equipment in steel mills for process parameter interlock protection.