Bently Nevada 3500/42M-SIL2-09-R0 Monitor

This monitor module provides continuous protection for rotating machinery using proximity and seismic transducers. It accepts eddy current probes, accelerometers, and velocity sensors for comprehensive vibration measurement. The module offers flexible configuration to suit a wide range of machine types and applications.

Input Configuration and Measurement Modes

The Bently Nevada 3500/42M-SIL2-09-R0 provides up to four input channels, each configurable for proximity or seismic sensors independently. It measures vibration in displacement, velocity, or acceleration units based on the application requirements. The module also supports speed measurement and includes pass-through outputs for direct connectivity. It includes an internal finite impulse response (FIR) filter for anti-aliasing and oversampling protection.

Technical Specifications

Specification	Detail
Model	3500/42M-SIL2-09-R0
Product Type	Proximity/Seismic Monitor
System Compatibility	Bently Nevada 3500 Series
Safety Integrity Level	SIL 2
Input Channels	4 (configurable)
Input Types	Proximity, Accelerometer, Velocity
Measurement Modes	Displacement, Velocity, Acceleration
Speed Input	Yes
Pass-through Output	Yes
Transducer Interface	Two-wire or three-wire
FIR Filter	Included (anti-aliasing, oversampling)
Alert and Danger Alarms	Yes (programmable per channel)
Power	Via backplane (5VDC)
Dimensions	241 mm × 25 mm × 241 mm
Weight	1.36 kg
Operating Temperature	-20°C to +65°C
Storage Temperature	-40°C to +85°C
Humidity	5% to 95% non-condensing
Certifications	SIL 2 (IEC 61508), CE, UL

Measurement Modes and FIR Filter

Users can select displacement, velocity, or acceleration modes through configurable parameters. An internal finite impulse response (FIR) filter provides anti-aliasing protection and oversampling for measurement reliability . The pass-through output lets you connect the raw transducer signal to other instrumentation. The module supports alert and danger alarms with configurable setpoints and trip delays.

Application Use

This monitor suits turbines, compressors, pumps, motors, and other critical machines. It provides continuous protection in power generation, oil and gas, and chemical processing plants. The module’s flexibility reduces spare parts inventory by supporting multiple sensor types. Its SIL 2 certification qualifies it for safety-critical applications.