| NDHJ-5 integrated flame detector
1. Summerize
The NDHJ-5 integrated flame detector is our company follows the international newest fire to examine and dispatch the exhibition tendency independent development a section of new flame detector. It based on the microprocessor system technology and number scene bus technology. It judges the flame on or off through flame frequency and the flame strong or not, has the intelligent judgment, the network, the miniaturization and the online software promotion function, is suitable large-scale boiler flame examination which in the coal-burning, the fuel oil, the fuel gas and so on each kind of burner arranges. It through the flame combustion's intensity and the frequency judgment flame's combustion condition compares through on the spot the specialized installment and the accent, but effective shield adjacent angle, opposite angle background flame disturbance. It does not need the fire to examine the amplifier cabinet, even may abbreviate the massive field wiring. Not only this may economical the installation and trial run cost, also enables the examination system's whole movement reliability to have the enormous enhancement.
2. Feature
May with DCS & FSSS system realize the interconnection, may also compose the flame detector system alone through own superior machine software. Passes goes too far examines manages the workstation to be possible the long-distance online installation parameter (for example hypothesis to have/misfires threshold value, flame to increase, flame frequency range).
Compared with the old style fire to examine cancels the fire to examine enlarges the cabinet, caused the breakdown and the service rate reduces. Is suitable in examines the product to the traditional fire turning to a new generation. Cancels enlarges the cabinet to cause the scene personnel to install the wiring to be simpler.
Uses the field bus technology to let the pyrotechnic signal digitization transmission, it has the precision to be high, antigambling ability. Uses the field bus technology to save the massive scene electric cable, reduces the electric cable to lie down reduces the construction intensity, reduces the time. Compares the imported product performance-to-price ratio to be high, facilitates the replace import fire to examine the product. The goods supply cycle short, the post-sale service is prompt.
3. Function
The sustainable electronic self-checking function and can output the breakdown node signal.
Long l distance/adjusts the flame ON/OFF threshold.
Long l distance/adjusts the flame gain multiple.
But long-distance/adjusts the flame frequency range.
Output the 4-20mA combustion intensity signal.
May output has the fire/to misfire the node signal.
Entire Chinese operation contact surface, entire Chinese superior machine software.
All parameters can make the adjustment through the scene/long-distance two ways.
4. Technical parameter ：
Working voltage ： 24VDC±10%
Operating current: ≤0.5A
Operating temperature: -30℃～+85℃
Work humidity: ≤95%( Relative humidity, Non-congealment)
Relay outputs: flame relay: Often opens the passive electronic contact (to have fire closure)
Fault relay: Often shuts the passive electronic contact (normal separation)
Electronic contact capacity: 0.5A 220VAC 1A 24VDC
Pyrotechnic signal output: way of output: 4～20mA DC
Return route impedance: ≤750Ω
Response time: Fire: fastest 1 unfired: fastest 1 second
Response wave length: Type NDHJ-10-IR:400～1100nm
Type NDHJ-10-UV: 295～320nm
Peak wavelength: Type NDHJ-10-IR: 800nm
Type NDHJ-10-UV: 300nm
Cooling atmosphere source request: Pure, low temperature
Cooling amount of wind request: 0.5/m3
Data communication: way of communication: RS485
Distance of communication:≤1500m
Biggest node: ≤127
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