Analog Adjustable Linear Heat Detector Conventional Type

MS2000 Analog Adjustable Linear Heat Detection System is a kind of four-core high-performance analog linear heat detector, with high adaptability and high performance-price ratio, which could be widely applied in places of industry, commerce and super heat dangerous area. Linear heat cable has high resistance and the insulating layers of its four core conductors are made of a kind of special NTC (negative temperature coefficient) material and its electrical control unit could reflect the fluctuation of system temperature by monitoring the fluctuation of material resistance.

MS2000 Linear Heat Detection(abbr LHD) System Consists: a. LHD Cable b. Control Unit

LHD Cable
1. Classification
Conventional Type This Type of LHD cable is the most widely used with strong stability.
CR/OD Type CR/OD Type not only has good UV resistance and good weather resistance, strongly recommended for outdoor using even under bad weather conditions, but also with high performance of acid resistant, alkali-resistant, salt spray resistant.
EP Type Explosion Proof Type, two main application environments: harsh EMI environment and explosive hazardous environment. The outer jacket of this type is protected by woven metal mesh with good performance of anti-EMI and eliminating the surface static of the LHD cable. We can us this type LHD cable in explosive hazardous environment with safety fence. During the installation, please make grounding connection of the woven metal mesh. Used in harsh EMI environment, single end grounding connection or double ends grounding connection should be specified after analysis of the interference sources

2. Structure & Installation
While wiring, the two red wires and two white wires are respectively connected to MS2000 linear detector interface and are strand-connected at the terminal, which is that red wire and white wire form a circuit for detector.
The system detects the resistance fluctuation of linear heat sensing cable resulted from the fluctuation of circuit temperature---i.e. when temperature rises, resistance drops. This fluctuation is monitored through linear detector interface of linear heat sensing cable. When it reaches preset alarm threshold value, output alarming signal. This feature allows the system to have the ability to detect fire in point or in line of whole circuit, which is that the system could detect the temperature fluctuation in certain point as well as certain area. After alarming, it could automatically restore to working condition.

Because the signal of linear heat sensing cable is analog signal, the application length shall not be overlong. Normally we regulate that the length for one tape is 200m. About the application issues, see detailed introduction in following part of the article.

3. Features and benefits
High adaptability: it could be applied in narrow, poor and dangerous environment conditions.
Good compatibility, MS2000 linear detector interface has relay output, which could be connected to various alarming control panel mainframes.
Chemical resistance and abrasion resistance: extrude and make jacket with high-strength, which could meet different needs;
Restorability: the linear heat sensing cable could automatically reset after alarming (under the situation of fire alarming temperature does not harm linear heat sensing cable), saving much cost for maintenance and operation;
Multiple monitoring functions: except for normal fire-alarming function, it could also monitor open circuit and short circuit faults.
Interruption resistance: four-core stranded structure has strong ability to resist electromagnetic field interruption.
Easy installation and simple maintenance

4. Application range of the products:
Cable tray; Conveyor
Power distribution device: switch cabinet, transformer, converting station, motor control center.
Filter, bag filter; Warehouse/shelf storage
Industrial process and material handling system
Bridge, wharf, shipping
Chemical storage facility
Hangar, oil

5. Technical parameter
Outer jacket configuration: PVC/High temperature resistance PVC
Standard length: 200m
Outside diameter of cable 3.5mm
Extendable 100N
Conductor material copper
Low temperature characteristics -40ºC
Ultimate temperature 190ºC
Temperature range 70ºC~140ºC
Voltage resistance The voltage resistance between core conductor and outer jacket is 10KV

Control Unit
MS2000-I Control Unit
The linear heat sensing cable MS2000-I of MS2000 linear detector interface is the controlling equipment used for monitoring temperature fluctuation of linear heat sensing cable and being connected to mainframe of intelligent fire alarm control panel. The linear heat sensing cable MS2000-I of MS2000 linear detector interface is the controlling equipment used for monitoring temperature fluctuation of linear heat sensing cable and being connected to mainframe of intelligent fire alarm control panel. Since fire alarm has locking function, MS2000-I must be disconnected to power and reset after alarming. While the fault function could automatically reset, it means that after clearing fault, fault signal of MS2000-I is automatically cleared.