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Product profile

BGMD-FBG Fiber grating temperature measurement system

Overview

This system provides a simple and reliable safety monitoring scheme conductive to improve the enterprise safety management automation level for the petrochemical industry and electric power industry.

 

System composition
 
The fiber grating temperature measurement system is composed of the fiber grating temperature sensor, fiber demodulator host, transmission cable and other auxiliary devices. The fiber grating temperature sensor achieves on-site temperature signal collection; the fiber demodulator host mainly provides the detection system work light source, displays real-time fire alarm and failure alarm detected by the system, conducts parameter setting, standard signal output and operation self-inspection and establishes the sound-light alarm system. The fiber demodulator host can access the alarm switch signal to the fire alarm controller in the operation room and be networked with the computer system through communication protocol.
 

System advantages

Intrinsic safety, anti-thunder and anti-explosion, resistance to severe electromagnetic interference and complete electric insulation.

High sensitivity and high measurement accuracy.

Stable and reliable system, long service life and simple construction.

Large monitoring capacity and synchronous scanning of all channels.

Multi-level alarm mode: constant temperature alarm, differential temperature alarm and fiber cut alarm.

Real-time and all-weather monitoring in humid and severe environment.

Real-time self-inspection and real-time calibration to ensure system reliability and correctness.

View real-time temperature at each point of each switch cabinet and query the historical temperature record, temperature curve and alarm record at each point.

Accurately position the alarm and position the alarm to each sensor.

 

System applications

High-voltage power cable temperature monitoring

Cable joint temperature monitoring

Spherical tank and horizontal tank temperature monitoring

Pipe and pipeline temperature monitoring

Temperature monitoring of cable bridge, cable tunnel and duct cable in power transmission lines

Temperature monitoring in hazardous and important areas

Cable tunnel temperature monitoring and fire alarm of power plants and metallurgical enterprises

Temperature monitoring in traffic field

Dam and river levee leakage monitoring

 

Technical parameters

Product Features:
 
Scan laser + multi-channel synchronous acquisition
0.1pm resolution ratio
0-100Hz adjustable
Standard 4-channel (extended arbitrarily in 128 channels)
Compatible with the same type of fiber grating sensor of different manufacturers
 
Technical indicators of fiber grating host
Parameter name Meaning
Model BGMD-FBG-04
Number of optical channels 4 (extendable)
Number of points in each channel 25
Collection frequency 25Hz (0-100 adjustable)
Wavelength range 1525-1565nm
FBG width 0.5nm
Dynamic range ≥50dB
Wavelength resolution 0.1pm
Wavelength repeatability 0.5pm
Wavelength accuracy 1pm
Working temperature -10-60℃
Storage temperature -40-80℃
Monitoring ability 50KM
Power consumption 20w
Optical interface FC/APC
Computer connector RJ45 (10/100M Ethernet)
Boundary dimensions Standard 19-inch (height 1U/2U/3U)
Weight 5KG

 

Sensor
1) Fiber grating temperature sensor BGMD-SR-TE01
 
Product Features
Anti-electromagnetic interference
Special high temperature fiber, good optical connectivity and uneasy to damage
Temperature sensor can be easily and directly installed to the measured surface
Special high-temperature ceramic material to ensure product reliability, persistence and temperature measurement accuracy without drifting
Internal and external double-layer optical fiber sheath design, applicable for special occasions
 
 
Application fields
Temperature measurement of fixed contact of electric high voltage switch cabinet
Temperature measurement of cable joint
Transformer temperature measurement
Mutual inductor temperature measurement
 
Item Unit Parameter value
Range -55-200 (customizable high temperature)
Resolution 0.01
Temperature measurement accuracy 0.5℃
Central wavelength nm nm 1525-1565
Grating reflectivity - ≥90
Encapsulation mode - Refractory ceramics
Sensor lead length - 2.5m Teflon casing
Sensor connection type - 1*3 optical dividers in parallel
Number of single-core fibers in parallel pcs 12
Anti-pollution flashover power frequency withstand voltage KV 220

 

2) Fiber grating temperature sensor BGMD-SR-TE02
 
The fiber grating temperature sensor detects the temperature value through the optical signal - central wavelength motion quantity reflected by internal grating. It is passive, electrically neutral and intrinsically safe and not subject to electromagnetic interference or lightning damage. The measurement accuracy and resolution are not affected by light source fluctuation or transmission line bending loss and the signla can be subject to remote transmission directly through the optical fiber (50KM).
 
 
Application fields
Temperature measurement of fixed contact of electric high voltage switch cabinet
Temperature measurement of cable joint
Mutual inductor temperature measurement
Item Unit Parameter value
Range -55-200 (customizable high temperature)
Resolution 0.01
Temperature measurement accuracy 0.5℃
Central wavelength nm nm 1525-1565
Grating reflectivity - ≥90
Encapsulation mode - Refractory ceramics
Sensor lead length - 2.5m Kevlar casing
Sensor connection type - 1*3 optical dividers in parallel
Number of single-core fibers in parallel pcs 12
Anti-pollution flashover power frequency withstand voltage KV 35

 


Structure features

Specification model

●  Fiber grating temperature sensor Model

1) Fiber grating temperature sensor BGMD-SR-TE01.

2) Fiber grating temperature sensor BGMD-SR-TE02

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