35
１１．PRODUCT SPECIFICATIONS
１１−１．Specifications
Model designation
:
NC-591W
Detection gas
:
Combustible gases
Gas concentration display
:
Digital LED (4-degit, 7 segments)
Applicable detector head
:
New ceramic sensor type detector head
Detection signal
:
Direct signal from the sensor
Detector head cable
:
CVV 4-core or equivalent
Distance to the detector
head :
Max 1.25km with CVV(1.25mm2) cable.
Output signal
:
4 〜 20mADC, non-isolated (Maximum loop load 300Ω)
Gas concentration
:
4 〜 20mADC(in ppm range)
22mADC fixed(in LEL range)
At trouble
:
0.5mADC
At initial clear
:
2.5mADC
At maintenance
:
2.5mADC
Alarm performance
:
Latched mode (Standard), non-latched mode(option)
or lock-in(option)
1st alarm
:
Orange light (AL1) flashing(steady light after reset operation)
Relay contact
:
De-energized at normal(Energized at alarm ……standard) or
Energized at normal(De-energized at alarm …… option)
Potential free contact N.O.(standard) or N.C.(option)
2nd alarm
:
Red light(AL2) flashing(steady light after reset operation)
Relay contact
:
De-energized at normal(Energized at alarm ……standard) or
Energized at normal(De-energized at alarm …… option)
Potential free contact N.O.(standard) or N.C.(option)
Contact rating
:
0.5A at 100VAC, 1.5A at 30VDC(Resistive load)
Trouble alarm
Alarm performance
:
Non-latched mode
Alarm display
:
Green light(PW/TR) flashing
Relay contact
:
Non-exciting at normal(exciting at alarm ……standard) or
exciting at normal(non-exciting at alarm …… option)
Potential free contact 1a(standard) or1b(option)
Self-diagnostic function
:
System failure, detector head connection failure.
Initial clear time
:
Approx 25 seconds
Several settings
:
By remote PC (uses exclusive cable)
Operating temp. & humidity
:
0 〜 40℃, below 90%RH(Non-condensing)
Power requirement
:
24VDC ± 10%
Applicable power cable
:
CVV 2-core
Power consumption
:
Max 10W(with single case) or
(including detection head)
Max 17VA(with multi-unit case)
Structure
:
Housing type for the case, front identification card type,
non-explosion proof type.
Dimensions & weight
:
Approx. 36(W) x 72(H) 134(D)mm,
Approx 0.1kg(unit only)
* Specifications subject to change without notice.
