Find the right sensors for your application

Opsens Solutions' highly accurate and repeatable single-point fibre optic temperature sensors offer unrivalled performance for a wide range of applications.

Opsens OTG sensors
The OTG series sensors were developed for applications that require very focussed temperature monitoring and very short measurement times.
The sensors are based on gallium arsenide SCBG (semiconductor bandgap) technology and are among the smallest optical sensors on the market with an outer diameter of 0.12 mm and a response time of less than 10 ms. With an accuracy of ± 0.3°C and a resolution of 0.01°C. The OTG series with plug-and-play capabilities offers high accuracy and resolution for all applications requiring long-term reliability and stability.

Opsens OTP sensors
The OTP series sensors have been developed for applications that require simultaneous monitoring of temperature and other parameters with a readout device. In addition, they are suitable for electromagnetic interference with strong fields of over 3 Tesla, MR environment and microwave applications.

The sensors are based on WLPI (White Light Interferometry) technology, are extremely robust and offer a resolution of 0.01 °C and an excellent accuracy of ± 0.15 °C. By using a monocrystalline birefringent crystal as a temperature transducer, the OTP series shows no thermal creep or ageing and therefore offers long-term reliability.

COMEM sensors
In addition to Opsens, Polytec also offers sensor solutions from the manufacturer COMEM Optocon. Like the Opsens OTG sensors, the COMEM sensors are based on gallium arsenide technology and are also only suitable for use with COMEM readout devices. The sensors are designed for use in environments with microwave radiation and high-frequency interference. They are not only suitable for high-voltage applications, magnetic fields and aggressive industrial environments, but also provide accurate temperature monitoring to protect equipment and installations. The sensors are customisable to meet specific requirements and can be calibrated from -200 °C to +300 °C.
 

Sensor overview

Opsens OTG-A

Powerful and robust for many applications

In combination with SCBG interrogators from Opsens Solutions, the OTG-A offers unrivalled repeatability and reliability under the most adverse conditions, such as in environments with high EM, RF, MR and microwave fields.
The standard operating range of the OTG-A is from -40 °C to +250 °C. Higher temperature ranges up to 300 °C are available on request.
The sensor is made of industry standard glass fibres and is compatible with all SCBG readout devices from Opsens Solutions. The compact and robust fibre optic temperature sensor is available with various optical cables and sheathing options and can be adapted to customer-specific applications or for OEM use.

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Opsens OTG-F

Very compact with fast response time for dynamic measurements

In combination with Opsens Solutions SCBG interrogators, the OTG-F offers unparalleled repeatability and reliability in the most adverse conditions, such as high EM, RF, MR and microwave field environments.
The OTG-F is manufactured with industry standard optical fibers and is compatible with all SCBG readout devices from Opsens Solutions. The sensor is available with different optical cable and coating options and can be adapted to customized or OEM applications.

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Opsens OTG-I220 & OTG-I360

Very compact with fast response time for power electronics

The sensors are manufactured with industry standard glass fibres and are compatible with all GaAs (SCBG) readout devices from Opsens Solutions. Their small size and fast response time make them ideal for complex instrumentation projects, e.g. power semiconductor devices. In the OTG-I220, the sensor end is in a polyimide tube with an outer diameter of 0.22 mm. For the OTG-I360, there are two models with the sensor end in a glass or stainless steel tube. The outer diameter of both models is 0.36 mm. 
An optional design is available for both sensors, the Smart Retractable Design-TT, which protects the sensor head during cable installation and measurement preparation with a thin but robust (telescopic tubing) polyimide tube. This gives the sensor head the necessary rigidity to easily pierce through silicone gel and position the sensor at a defined point on a chip or circuit board. Once the installation is complete, the sensor head is exposed. This additional protection does not restrict the flexibility of the sensor; the cable can still be wrapped around a finger.

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Opsens OTG-PM

Fast response time for energy and power electronics

The OTG-PM consists of industry-standard glass fibres and is compatible with all GaAs (SCBG) readout devices from Opsens Solutions. Its small dimensions and fast response time are perfectly tailored to complicated measurement projects, e.g. in the power semiconductor sector.

The miniature sensor head (0.15 x 0.15 mm), protected by a tube (0.22 mm outer diameter), is handled by a clever retractable design: a rigid ceramic tube of 0.64 mm allows easy piercing of the silicone layer for precise sensor positioning. The upper Teflon-coated stainless steel tube is curved to ensure visibility from any angle.

To facilitate mounting and instrumentation, the sensor is equipped with a bracket that allows quick and precise angle adjustment while ensuring the required stability.

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Opsens OTG-M Serie

Very compact with high accuracy for focussed temperature measurements

The difference between the individual models of the OTG-M series lies in the response time and the sensor diameter.
In combination with Opsens Solutions' SCBG (Semiconductor Bandgap) interrogators, the OTG-M series offers unrivalled repeatability and reliability in the most adverse conditions, such as high EM, RF, MR and microwave field environments.

The sensors are manufactured with industry standard glass fibres and are compatible with all SCBG interrogators from Opsens Solutions. The temperature sensors are available with various optical cable and sheathing options and can be customised or adapted for OEM applications.

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Opsens OTG-P

Long-term robust and powerful for harsh environments

The OTG-P temperature sensor is encapsulated in a robust stainless steel tube (a ceramic tube is also available) to ensure maximum protection in the harshest conditions. In combination with the SCBG (Semiconductor Bandgap) readout from Opsens Solutions, the OTG-P offers unrivalled repeatability and reliability in the harshest conditions. The spectrally encoded light signal is completely immune to EM, RF, MR and microwave fields.
The standard operating range of the OTG-P is from -40 °C to +250 °C (higher temperature ranges are available on request). The OTG-P consists of an industry standard 62.5/ 125 µm optical fibre and is compatible with all SCBG signal conditioners from Opsens Solutions. This robust fibre optic temperature sensor, available in various cable and jacket options, can be adapted for customised or OEM applications.

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Opsens OTG-Q

Fully inert, sealed, welded sensor tip for microwave, chemical and liquid applications

The OTG-Q temperature sensor offers the best performance in the industry. 
In combination with the SCBG (Semiconductor Bandgap) interrogators from Opsens Solutions, the OTG-Q offers unrivalled repeatability and reliability under the most adverse conditions, such as in environments with high EM, RF and microwave fields. The standard operating range is from -40 °C to +250 °C. The sensor consists of an industry standard optical fibre. The welded design with 1.4 mm thick PFA cladding provides a complete seal at the tip and is ideal for applications requiring immersion in liquids.

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Opsens OTG-R

Precise and reliable for EED assemblies

The probe is perfectly tailored to reliably measure electromagnetic environmental influences on EIDs (electronic initiation devices). The small GaAs sensor crystal at the tip of the optical fiber is suitable for bridge wire mounting and temperature monitoring for HERO/RADHAZ applications.
The OTG-R is immune to mechanical vibrations and allows extension cables without any signal degradation. The sensor offers unparalleled repeatability and reliability under the most adverse conditions, such as in environments with high EM, RF, MR, and microwave fields. It is made of industry-standard glass fibers and is compatible with Opsens Solutions' SCBG (Semiconductor Bandgap) RadSens devices. This compact and robust fiber optic temperature sensor is available with various optical cables and sheathing options and can be customized to suit specific customer applications.

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COMEM Sensoren TS2P, TS3, TS4, TS5, TST

For microwave and high-voltage applications

The COMEM TS series fibre optic temperature sensors consist of a gallium arsenide (GaAs) crystal mounted at the end of the optical fibre. They are the best choice for temperature measurement in environments with microwave radiation and high-frequency interference and are also recommended for high-voltage applications, magnetic fields and aggressive environments where conventional metallic sensors such as resistance temperature meters or thermocouples may not be suitable.

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Opsens OTP-A

Very versatile in use

The OTP-A utilises the temperature-dependent birefringence of a special crystal as a temperature transmission mechanism. Due to the pure monocrystalline material used, the sensor does not exhibit thermal creep or aging like other fibre optic sensors based on the thermal expansion of glass fibres.
Combined with Opsens' WLPI signal conditioning technology, the OTP-A offers unrivalled repeatability and reliability under the most adverse conditions, such as in environments with high EM, RF, MR and microwave fields as well as under high voltage and rapid temperature changes. The sensor is designed for relatively dry environments without significant condensing humidity. (for such conditions, the fully sealed OTP-B is more suitable and can even be permanently immersed in liquid)
The standard operating range of the OTP-A is from -40 °C to +250 °C. It is compatible with all Opsens WLPI interrogators. This compact and robust fibre optic temperature sensor, which is available in various cable and coating options, can be adapted to customer-specific applications or OEM applications.

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Opsens OTP-P

Long-term robust and powerful for harsh environments

The OTP-P sensor utilises the temperature-dependent birefringence of a specially selected crystal as a temperature transmission mechanism. Due to the pure monocrystalline material used, the OTP-P does not show thermal creep or ageing phenomena like other fibre optic sensors based on the thermal expansion of glass fibres.
Combined with Opsens Solutions' WLPI signal conditioning technology, the OTP-P offers unparalleled repeatability and reliability under the most adverse conditions, such as in environments with strong EM, RF, MR and microwave fields, as well as under high voltage and rapid temperature cycling conditions.
The standard operating range of the OTP-P extends from -40 °C to +250 °C.
The sensor is compatible with all WLPI interrogator devices from Opsens Solutions. This robust fibre optic temperature sensor, available in various cable and coating options, can be adapted for customised or OEM applications.

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