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Fibre Optic Temperature Measurement

Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
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Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
Fibre Optic Temperature Measurement
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  • Model: Rugged Monitoring Systems
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Fibre Optic Thermometry   

Temperature Measurement Systems by Rugged Monitoring   

  • Automotive & Aerospace
    • Battery technology
    • Charging systems
    • Electric motors
    • Engines & turbines
  • Medical
    • Scanner systems: MRI, NMR, etc.
    • Point sensors
  • Microwave & RF
    • Industrial process heating equipment
    • High power RF generation: radio, radar, etc.
  • Industry
    • Process monitoring
    • Power generation
  • Research

Rugged Monitoring is a new company formed by veteran fibre optic engineers. This industry leading team has over 100 years of combined experience, and is committed to delivering customisable fibre optic based sensing solutions for challenging applications.

Precision, reliability, and high performance are Rugged Monitoring priorities.

Fibre optic temperature sensors are highly responsive, intrinsically safe and immune to external influences such as electromagnetic fields, corrosion, and vibration. Rugged Monitoring offers several instruments for temperature measurement, and seven types of sensor.

L201 Series Monitors

The L201 is a compact 2 to 4 channel fibre optic temperature monitor designed for use in a wide range of demanding applications. The instrument has a measuring range of -269 °C to +300 °C with complete immunity to RFI, EMI, microwave and high voltages. This makes it the optimal choice for environments where extreme conditions limit conventional temperature sensor/monitor systems.

Compatible with a wide range of fibre optic temperature sensors from both Rugged Monitoring and other companies, the instrument is based on proven GaAs technology with inbuilt redundancy. It also does not require calibration and has been designed to offer simplicity of use with plug and play operation.

The multi-channel L201-X (shown right) collects data from up to 8 sensors (expandable to 256) and has been designed to integrate easily into existing systems via serial comms or analogue ports. The 201-X monitor is supplied with Rugged Connect: software designed with the needs of test platform or industrial process monitoring integration needs in mind.

H201 Series Monitors

Like its desktop counterpart, the new H201 (shown above far right) offers portable battery-powered temperature monitoring with complete immunity to RFI, EMI, microwave and high voltages. It can collect data from up to 8 sensors (expandable to 256), and has a measuring range of -269 °C to +300 °C.

T301 Series Monitors

The T301 series is a rugged 8 to 24 channel fibre optic temperature monitor designed for use in environments where extreme conditions limit conventional temperature sensor/monitor systems.

The instrument has a measurement range of -269 °C to +300 °C; complete immunity to RFI, EMI, microwave and high voltages; and is compatible with a wide range of GaAs fibre optic temperature sensors from both Rugged Monitoring and other companies.

The T301 is designed for data collection and ease of integration into existing systems. As such it is equipped with an RS-485 interface as standard. Optional interfaces include: RS-232, Gigabit Optical Ethernet, or simple 0-10 V analogue outputs.

The supplied software, which is capable of reading up to 256 channels simultaneously, has been written with the needs of industrial test and process monitoring in mind.

R501 Series Monitors

R501 monitorThe R501 has been developed to offer an upgradeable and flexible solution for the changing needs of customers. This Rugged Monitoring system delivers real-time monitoring of up to 256 fibre-optic and other sensors for measurement of temperature, pressure, AC current, AC voltage, DC current, DC voltage and more. Binary Inputs etc.

The R501 utilises different types of input/output (IO) modules within its chassis. These can include binary, analogue, and digital inputs, or analogue and digital outputs. It supports both rack mount and distributed installation.

The fibre-optic enabled modules and other I/O modules use the Dinrail mount, and can be daisy chained to the central CPU module, communicating over CANBUS/MODBUS. Distributed modules can also be directly connected to a datalogger, for example CAN-Logger, while Rugged Connect is an advanced software package available for data visualisation, configuration and reporting.

Like other Rugged products, the R501 can be used in a wide range of applications. These are not limited to Aviation, Automotive, Cryogenic, Battery Bank/Racks, Medical, Semiconductor, Utility, and R&D. It's wide measuring range (-271 °C to +300 °C), high precision and complete immunity to RFI, EMI, microwave radiation, and high voltages make it an obvious choice for temperature measurement in extreme conditions.

Lsens Series Sensors

Rugged Monitoring sensors offer complete immunity to RFI, EMI, NMR and microwave radiation. A typical probe consists of a PTFE protected glass fibre with a GaAs-crystal (Gallium Arsenide) at the tip. There are currenly five types of sensor available:

For -200 to +250 °C
TypeDescriptionTip dia.VaccumImmersion
LsensBUnprotected probe tip
No Teflon protection for the last few centimetres [default is 5 cm]
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <200 ms
0.3 mmYesNo
LsensP  Thin-wall polyimide protective cap as standard
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <200 ms
0.7 mmOptionalYes
LsensROptimised to resist liquids and pressures up to 3 bar
Tough polyimide sheath and Teflon protective cap
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <200 ms
1.7 mmOptionalYes
LsensTTeflon sheath
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <200 ms
1.1 mmOptionalYes
LsensUHeavy duty
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <200 ms
1.1 mmNoYes
For Transformers
TSensDisc-shaped tip or disc-less option
Designed for oil immersion in electrical transformers
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <2000 ms with disc, <2 ms without
9 mm Torlon discNoYes
For -269 to +85 °C
LsensCCryogenic tip
Optimised for vacuum and cryogenic applications
[Polyimide on the last 10 cm]
Accuracy ±0.8 °C | Repeatability 0.2 °C | Response time <200
0.7 mmYesYes


The run length from sensor to monitor can be several kilometres without any effect on the accuracy of the measurement results.

Technical data for the monitors and sensors can be downloaded as a PDF from the Documents tab above.


Rugged Monitoring website

File NameSizeLink
RM Application Note: Wood Drying362.09 kbDownload
RM Sensor Range Booklet 2019501.53 kbDownload
Showing 1 to 2 of 2 (1 Pages)

Fibre Optic temperature measurement

H201 Temperature Monitor

L201 Temperature Monitor

R501 Temperature Monitor