JRC JLN-740

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The JLN-740 series is a Doppler Speed Log compliant with the IMO MSC.96(72) standard, required on all internationally-voyaging ships exceeding 300 GT. Boasting never-before-seen accuracy for speed measurement, the JLN-740 is also installed with our company’s proprietary bubble detection, which informs you when measurement accuracy is impaired due to air bubble contact. A model featuring color LCD touch panels for the main and sub displays, allowing you to view important information and adjust brightness in all displays from one location, is also available.

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JRC JLN-740

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Thông số kỹ thuật

Name DOPPLER LOG
Model JLN-740A JLN-740N JLN-741A JLN-741N
IMO approved
Operating system Dual-beam pulse Doppler system
Operation frequency 2MHz
Measurement scale -10.00 to 40.00kn
Sailing display range Model A : 0 to 999999.99NM, Model N : 0 to 99999.99NM (NWW-7 : to 9999.99NM with Distance Counter)
Water speed 3.0 m deeper than the transducer surface
Ship speed accuracy 1 % of the speed of the ship, or 0,1 kn whichever is greater
Total distance accuracy 1 % of the distance run by the ship in 1 h or 0,1 nautical miles in each hour whichever is the greater.
Speed indication kn or m/s
Display Touch panel
5.1 inch-LCD
(480 x 800 pixels)
4.5inch
monochrome
LCD
Touch panel
5.1 inch-LCD
(480 x 800 pixels)
4.5inch
monochrome
LCD
Input interface
(IEC-61162-1)
GPS: RMC, ZDA (clock adjustment)
Signal output 8 ports NMEA0183 Ver1.5, 2.1, 2.3, 4.0 or IEC61162-1 :
VBW, VLW
2 ports IEC61162-1 :
VBW, VLW
1 ports IEC61162-1 :
VBW, VLW
I/O interface Analog display : 2 ports
Log pulse : 2 ports
(Photocoupler signal 200pulse / NM, Max. 30V, 10mA)
Distance Counter (NWW-7) : 1port
Remote Display (NWZ-650SDR /NWZ-840SDR),
Multi Information Display (NWZ-4610) : Total 2 ports
LAN I / O for RMS : 1 ports
Alarm (Power · Speed · System) output : 1 port each
Serial I /O for alarm : 1 port
Dimmer : serial I / O:1 port · Analog Input : 1 port
Power supply voltage AC100/ 230V (±10%)
Power consumption AC100V : 50W (60VA) Less than, AC230V : 50W (150VA) Less than
Environmental requirements
(excl. transducer)
Temperature range : -15 to 55℃ (operating)
Relative humidity : 0 to 93% (non condensing)