Product Introduction

Gallium arsenide fiber optic temperature sensors are temperature sensors made using gallium arsenide as the temperature-sensitive material. By leveraging the property of gallium arsenide semiconductor material, where changes in its optical bandgap width lead to a temperature-dependent shift in the light absorption edge, these sensors use light as the medium and quartz glass fibers as the transmission medium. The gallium arsenide crystal is encapsulated with quartz glass to form the sensor.

The sensor features a conductor-free structure, making it completely immune to electromagnetic interference. It offers excellent repeatability, high precision, fast response, and long service life. These sensors are suitable for applications that demand high reliability and resistance to interference, such as environments involving RFI, EMI, NMR, RF, microwave, ultra-high voltage equipment, and corrosive liquids.

Working Principle

Used for online monitoring of the internal hotspot temperature of oil-immersed transformers. The outer sheath is made of a PTFE spiral sheath tube, with an internal PTFE intermittently perforated inner sheath tube, allowing liquid to penetrate into the sheath when immersed. It features excellent tensile and vibration resistance. The sensor body adopts an open-ended design with high insulation performance, making it suitable for vacuum drying processes and oil-immersed environments.

Specifications

Applications

Oil-Immersed Transformers

Real-time monitoring of hotspot temperatures inside transformers.

Suitable for use in high-voltage and oil-immersed environments.

Electromagnetically Interfered Environments

Ideal for areas with strong RFI, EMI, NMR, RF, or microwave interference.

Immune to electromagnetic interference due to its conductor-free structure.

Vacuum Drying Processes

Designed for precise temperature measurements under vacuum conditions.

Corrosive Liquids

Resistant to chemical corrosion, enabling long-term use in kerosene, insulating oils, and other corrosive liquids.

High-Precision Measurement Scenarios

Fast response time and high accuracy make it suitable for applications requiring reliable and repeatable temperature measurements.

Ultra-High Voltage Equipment

Suitable for temperature monitoring in ultra-high voltage systems due to its high insulation performance.

Industrial and Research Applications

Used in scientific research and industrial processes where non-invasive, accurate temperature monitoring is crucial.

Critical Environments

Applicable in environments that demand resistance to extreme conditions, such as high temperatures, vibrations, and chemical exposure.

Physical Structure

Q&A

Q1: What is the operating temperature range of the sensor?

A1: The sensor operates within a temperature range of -40°C to 260°C.

Q2: Can the sensor be used in oil-immersed environments?
A2: Yes, it is specifically designed for oil-immersed environments, including use in transformers and insulating oils.

Q3: Is the sensor resistant to chemical corrosion?
A3: Yes, the sensor is highly resistant to chemical corrosion, making it suitable for long-term use in kerosene, transformer oil, and other corrosive liquids.

Q4: What type of applications is the sensor suitable for?
A4: It is suitable for high-precision temperature monitoring in transformers, vacuum drying processes, high-voltage equipment, and environments with strong electromagnetic interference or chemical exposure.