8
5.
SPECIFICATIONS
5.1
Sensor unit
No.
MODEL MD-SX SENSOR UNIT
(1)
Function
Oil mist concentration detection
Mist level signal conversion and output
(2)
Detection point
1 point/1 unit
(3)
Mist detection
Natural diffusion system
(4)
Detection concentration
0 - 2.0 mg/L (0 - 0.5 mg/L : for EGR system)
(5)
Detection system
Optical system (Optical dispersion system)
(6)
Detection interval
Continuous
(7)
Display
3 LEDs
“POWER”
(Green)
: Power status
(Lighting)
“ALARM”
(Red)
: PRE ALARM
(Blink)
HIGH ALARM
(Lighting)
“FAILURE” (Yellow) : Comm. and Sensor failure (Lighting)
(8)
Data communications
Serial interface: RS-485 (Half Duplex) conformity (Sensor unit - controller)
(9)
Initial-setting operation
Rotary switch : Communication node (16CH)
“0” - “F”
Dip switch
: Terminator
“ON”/“OFF
(10)
External connection
(Sensor unit - Controller)
Sensor line
: MD-SX option cables (Daisy chain)
Total length: 150 m max.
Connection method : Connector
(Standard type)
Clamp-type terminal
(Cable gland type)
(11)
Power supply
24 V DC (+30% to
25%) (supply from controller)
(12)
Power consumption
60 mA (max.)/1 unit
(13)
Outline dimensions
80
W
124
H
168
D
mm (Standard: connector type)
80
W
120
H
168
D
mm (Cable gland type)
(14)
Installation
Screw size: G 3/4 (with a seal washer)
Vertical direction : Level or less than 15
of facing down
Rotation direction : Less than
5
(15)
Protection against dust
and waterproofing
Protection class: IP 55
(16)
Weight
Approx. 450 g (Standard connector type, Cable gland type)
Approx. 500 g (Fling - lead type)
(17)
Paint color
Munsell N1.0 (Black) (Case part)
(18)
Environmental conditions
Ambient temperature:
(For operation)
5 - 55
C
5 - 80
C (Engine insertion part)
(For storage)
20 - 80
C
Humidity
: Max. 80%RH (without dew condensation)
Atmosphere : No corrosive gas
Vibration
: Amplitude:
1.6 mm or less (2 to 25 Hz), 4 G or less (25 to 2 kHz)
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Issued to HORIZON TANKERS LIMITED S.A.
