Bently Nevada 3500/60 133811-01 Temperature Monitor

Technical Specifications

Parameter	Details
Product Type	Temperature Monitor Module
Compatibility	Bently Nevada 3500 Series Monitoring System
Number of Channels	6 independent channels
Input Types	RTD (2-wire or 3-wire), thermocouple (J, K, T, E, R, S, B), DC voltage
RTD Range	–200 °C to +850 °C (Pt100)
Thermocouple Range	–200 °C to +1820 °C (depending on type)
Voltage Range	0 mV to 100 mV DC
Measurement Accuracy	±0.1 % of reading + 0.1 °C (RTD), ±0.5 °C (TC)
Resolution	16-bit (0.01 °C for RTD, 0.1 °C for TC)
Scan Rate	10 samples per second per channel
Filtering	Software configurable low-pass filter
Alarm Outputs	6 relay outputs (form C, assignable)
Communication Protocol	Modbus RTU, Modbus TCP/IP
Dimensions (H x W x D)	241 mm x 38 mm x 254 mm
Weight	1.2 kg
Power Supply	24 VDC nominal (18 VDC to 32 VDC)
Power Consumption	8.0 W typical
Operating Temperature	–20 °C to +65 °C
Storage Temperature	–40 °C to +85 °C
Protection Class	IP20
Certifications	CE, CSA, ATEX, ABS

Multi-Sensor Temperature Monitoring

The 3500/60 133811-01 temperature monitor module provides six independent channels for comprehensive thermal measurement in critical machinery. This unit accepts RTD, thermocouple, and DC voltage inputs, accommodating a wide variety of temperature sensors. It achieves outstanding accuracy with ±0.1 % of reading for RTD inputs and ±0.5 °C for thermocouple types. The module samples each channel at 10 readings per second, ensuring timely capture of temperature changes in bearings, windings, and process streams.

Flexible Input Configuration

Each channel on the 3500/60 133811-01 supports individual configuration for sensor type, measurement range, and engineering units. Operators can select from all common thermocouple types, including J, K, T, E, R, S, and B. For RTD inputs, the module provides user-selectable 2-wire or 3-wire connection modes. Additionally, a software configurable low-pass filter helps suppress electrical noise in electrically noisy environments.

Alarm and Protection Logic

The 3500/60 133811-01 includes six form C relay outputs, each assignable to any channel or combination of channels. Users can define independent alarm setpoints for warning and danger levels per channel. The module supports latching and non-latching relay modes, as well as adjustable time delays to prevent false alarms from transient temperature spikes. Moreover, the unit features automatic sensor break detection, alerting operators to open-circuit or short-circuit conditions.

System Integration and Physical Design

Weighing 1.2 kg and occupying a half-height slot (38 mm width), the 3500/60 133811-01 integrates seamlessly into the 3500 rack. The module consumes 8.0 W from a 24 VDC supply and operates reliably across a wide temperature range of –20 °C to +65 °C. It supports Modbus RTU and TCP/IP protocols for straightforward connectivity to plant DCS, PLC, and SCADA systems. Its IP20-rated construction ensures durable performance in industrial control room environments.