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Highly robust, rugged and designed for reliability, multichannel fiber optic temperature monitor for Industrial, electric substation and outdoor environment.

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Summary Products

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Rugged design, compact and robust packaging, and reliable fiber optic temperature monitoring system for continuous online monitoring and testing applications in harsh operating conditions of energy, mobility, aerospace and defense, Oil & Gas and Industrial segments.

  • Most rugged and robust system for Extra High Voltage and outdoor environments
  • up to 24 Channels on one monitor (4 to 24 channels)
  • Easy to install in control box or enclosure: Plug and Play
  • Immune to extreme EMI, ESD environment
  • Control function using programmable relays (Form-C)
  • Software designed to be interfaced with other testing platforms


The Rugged Monitoring T301 is a specially designed fiber optic temperature monitor for long term continuous online monitoring and testing application in energy, emobility, aerospace, defense, Oil & Gas and Industrial segments. The T301 Fiber optic monitor combines compact form factor and user-friendly interface in the monitor and software. The system is based on proven zero-drift GaAs technology and designed for Plug and Play operation. The T301 has wider measuring range from -269 °C to +300 °C, with higher accuracy (less than 1°C), 100% repeatability and faster response time (200ms per channel). It has capability to measure temperature from maximum 24 Fiber Optic Temperature Sensors and a local LED display for real time data visualization. The system supports range of comminution options (Serial-RS485, Ethernet-RJ45, Fiber-FXP) for third party system integration.

The T301 monitor comes with remote monitoring and configuration software, Rugged Connect, a common software platform for all RUGGED Monitoring systems. The Rugged Connect software has advance visualization, configuration, notification and reporting features to suit different applications. The software also allows customers to program alarm conditions and relays based on their needs. The T301 also comes with a web-client software (Option available for systems with Ethernet or Fiber-FXP ports) that has feature similar to Rugged Connect software. The system supports all major industry standard protocols (Modbus, DNP3.0, IEC60780-104, IEC61850) and comes with drivers for MATLAB, LabView and python for easy data integration. 

The T301 monitor can be extended to add analog output and relay outputs. The system can be provided with one analog output module that supports up to 08 programmable analog outputs. Relay Output module (optional) can also be made available (built-in) with maximum of 08 Form-C relays (user programmable). RUGGED MONITORING has a team of experts to provide customization to its sensors, monitors and software in very short time.


  • Energy: Transformer Temperature Monitoring, Winding Hot Spot Monitoring, Cable Termination Temperature Monitoring, Switchgear Temperature Monitoring, Busbar Hot Spot Monitoring, Motor Winding Hot Spot Monitoring, Generator Temperature Monitoring, Capacitor Temperature Monitoring
  • Emobility: Battery Module Temperature Testing, Battery Performance Testing, Battery Abuse Testing, EV Motor Testing, Charging Station Temperature Monitoring
  • Medical: Temperature testing of body implantable devices under MRI applications
  •  RF/Microwave: Wood Drying, Soil Decontamination / Treatment, Food Sterilization and Packaging
  • Aerospace and Defense: Rocket and space shuttle design validation, Space Radar and Radio Astronomy, EED (Electro Explosive Device) temperature measurement, Radio and Radar Radiation Hazard Applications
  • Industrial Process Control and Monitoring
T301 applications


benefits of T301 fiber optic monitor
  • Most suitable and cost effective for Extra High Voltage, Industrial and Outdoor Environments
  • Rugged design, reliable and durable for long term continuous monitoring
  • No shift over time and high stability enables long term monitoring without recalibration
  • Self Test FO Channel to ensure integrity of the monitor
  • NIST calibration certificate ensures the accuracy of the monitoring data and health assessment
  • Higher accuracy and 100% repeatability ensure early fault detection in monitored assets
  • Major industry standard protocols are already implemented for low cost and Quick integration with third party systems
  • Robust datalogging and Analytics
  • User programmable alarm conditions and relays to meet different customer needs
  • Customizable according to customer specific applications

Technical Specifications

Support for Redundant CommunicationSupports PRP (Parallel Redundancy Protocol) using external PRP Switch (Redbox)
Drivers (OPTIONAL)MATLAB, LabVIEW, python
Measurement Range-80 °C to +300 °C (-112 °F to +572 °F)
Extended Measurement Range (Optional)Down to 4 °K (-269 °C to +300 °C or -452 °F to +572 °F
Resolution0.1 °C
Accuracy±1.0 °C Absolute (+/- 0.2 °C in relative temperature)
Number of Channels 4 - 24 Channels
Logging1 sec interval on USB / Micro SD card
Configuration Port- USB (to use with Rugged connect windows software) - Optional Ethernet Port (using Web Client software)"
Communication Ports"- RS-485 (RS-232 optional converter); Customized ports available on demand - Optional Gigabit Ethernet (RJ-45) port - Optional Gigabit Fiber Port (FXP)"
Input Power24 - 48 VDC
Memory (Optional)4 or 8 GB, Industrial Grade micro-SD up to 2TB
Analog Outputs (Optional)8 fully configurable 0-5V / 0-10 V / 4-20 mA; User Programmable for one or multichannel data.
Relay Outputs (Optional)8 Programmable Form-C Relays (5A) plus 1 system fault relayonal
Dimensions"10.5’’ x 7.4” x 2.8” 26.7W x 18.7D x 7.2H cm"
Operating temp-40 °C to +72 °C
Storage temp-40 °C to +85 °C
Humidity95% Non Condensing
Communication Protocols (OPTIONAL)- Serial Interface: Modbus, DNP3.0 and IEC60870-104 - TCP/IP: Modbus, DNP3.0 and IEC60870-104, IEC61850 - Custom protocols can be provided on demand."

Ordering Code

fiber optic monitor t301 ordering code


1415 Frank-Carrel
Suite 230
Quebec, QC

Call US: +1-418-767-0111

Email US: [email protected]


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