The optical fiber temperature transmitter is an intelligent instrument that converts the temperature signal detected by the optical fiber temperature sensor into a standard electrical signal (such as 4-20mA) or digital signal, and has functions of signal processing, isolation, transmission and communication.
Core Advantages
- Resistance to strong electromagnetic interference (EMI): It is not affected by high voltage, strong electric fields, magnetic fields, or lightning, which is the most core advantage.
- Intrinsic safety and explosion-proof: The probe is free of electricity and sparks, making it suitable for use in Zone 0 flammable and explosive environments.
- Excellent insulation performance: It is the preferred choice for temperature measurement in high-voltage electrical equipment.
- Corrosion and high-temperature resistance: The optical fiber material has strong chemical stability and can adapt to harsh corrosive environments.
- Long-distance transmission: The signal can be transmitted for several kilometers without attenuation.
- Multi-point temperature measurement: A single optical fiber can be connected to multiple temperature measurement points.
Optical Fiber Temperature Transmitter vs Traditional Temperature Transmitter (Key Point Comparison)
| Comparison Item |
Optical Fiber Temperature Transmitter |
Thermoresistance / Thermocouple |
| Signal Form |
Optical Signal |
Electrical Signal |
| Resistance to Electromagnetic Interference |
Strong |
Weak, requires shielding |
| Explosion-proof Performance |
Intrinsically safe, suitable for Zone 0 |
Requires safety barrier |
| High Voltage Insulation |
Completely insulated |
Requires special insulation treatment |
| Cost |
High |
Low |
| Applicable Scenarios |
Strong electromagnetic fields, high voltage, explosion-proof |
General industrial temperature measurement |
Application scenarios
- High-voltage electrical equipment: transformer windings, GIS switch cabinets, cable joints
- Strong electromagnetic environments: substations, photovoltaic inverters, motors
- Chemical explosion-proof areas: reaction vessels, storage tanks, oil and gas pipelines
- Nuclear power, metallurgy and other strong radiation and strong interference environments
Overall, the optical fiber temperature transmitter is an expert with a specific area of expertise. Its selection logic is very clear: when the measured environment has high pressure, strong magnetic fields, flammable and explosive substances, or when the space is narrow and traditional sensors cannot be installed, it is an irreplaceable solution.