Bently Nevada 135473-01

Ordering Information

HAZARDOUS GAS DETECTION MODULE

3500/63-AXX-BXX

A: Input/Output Module:

01 Internal Termination Catalytic Bead Input/Output Module

02 External Termination Catalytic Bead Input/Output Module

B: Agency Approvals:

01 FM(C/US), IEC

Technical Parameters

Channels: Up to 4 inputs for Bently Nevada 135473-01, configurable as:

Analog: 4-20 mA loops or 0-10 V signals

Discrete: 24 V DC wetting-voltage contacts

Internal Terminations:

250 Ω precision resistors for current loops

10 kΩ for voltage-mode inputs

4.7 kΩ pull-up for discrete contacts

Intrinsic-Safety Barriers: Integrated zener-diode networks per channel certified for Class I Zone 2/Div 2 in Bently Nevada 135473-01

Resolution & Accuracy (analog): 16-bit A/D, ± 0.1 % of full scale

Input Protection: Overvoltage clamp to ± 35 V; reverse-polarity protection

Isolation: ≥ 1 kV barrier-secondary to chassis ground

Sampling Rate: 50 samples/s per channel (analog)

Environmental Ratings:

Operating: 0 °C to +60 °C

Storage: -40 °C to +85 °C

Humidity: ≤ 95 % RH, non-condensing

Product function

Intrinsic-Safety Conditioning: Applies built-in barriers to isolate hazardous-area sensor loops.

Signal Termination: Provides correct loop/contact termination on-board.

Digitization & Bus Output: Converts inputs into digital data over the 3500 backplane.

Self-Diagnostics: Detects faults in Bently Nevada 135473-01 and flags them to the system interface.

Application Areas

Hazardous-Area I/O: Direct rack mounting of sensors using Bently Nevada 135473-01 in petrochemical environments.

Proximity & Vibration Monitoring: Feeding isolated analog signals from probes.

Process-Loop Integration: Reading 4-20 mA transmitter outputs with Bently Nevada 135473-01 in safety systems.

Discrete Alarm Inputs: Capturing fail-safe contact closures with intrinsic-safety.