Types of fiber optic temperature measurement hosts

The fiber optic temperature measurement host system is divided into fluorescent fiber optic temperature measurement, distributed fiber optic temperature measurement, fiber optic grating temperature measurement sensors, etc. FJINNO China Manufacturing Factory will introduce several applications and differences to you.

The host and configuration of the fluorescent fiber optic temperature sensor manufacturer's system can be applied to monitoring the temperature of the incoming and outgoing line contacts of switchgear, transformer winding, and fluorescent temperature measurement of ring main cabinet plugs.

Common technical requirements: Fluorescent fiber optic temperature measurement, with no less than 6 channels. Each switch cabinet circuit breaker should be equipped with the root of the upper and lower static contacts or the connection of the busbar and cable. The probe should use fluorescent fiber optic probes, and the diameter of the probe should not exceed 3mm. The fluorescent fiber optic temperature sensor is a full dielectric material that is not affected by EMI interference. The diameter of the probe is not more than 3mm, and the temperature measurement error is not more than 1 ℃ (full range: ± 1%). The power frequency withstand voltage is not less than 120kV. The temperature sensor needs to undergo power frequency withstand voltage, short-term current, partial discharge and other tests together with the switchgear equipment.

Distributed fiber optic temperature measurement is often used in fiber optic temperature measurement systems for cable temperature monitoring in substations. By using distributed fiber optic temperature measurement based on Raman scattering temperature measurement technology, temperature anomalies can be accurately and timely located on a single fiber; At the same time, the system is equipped with multi-level fixed temperature alarm values and temperature rise rate alarms, displaying real-time temperature distribution curves and achieving early warning before a fire occurs. Distributed fiber optic temperature sensors can achieve distributed continuous monitoring of temperature along the fiber optic line, and have advantages such as small size, light weight, good electrical insulation, chemical corrosion resistance, high temperature resistance, high sensitivity, fast response, explosion-proof, flameproof, low cost, and resistance to electromagnetic interference. They have been widely used in pipeline leakage detection, dam infiltration, power system monitoring, fire warning, and medical treatment.

Fiber optic grating temperature sensors can be applied in multi-point temperature measurement, but the host is expensive, so it is usually not suitable for a wide range of applications.

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