New Cosmos Electric KS-7D, Instruction Manual

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10. Specifications
Detection principle Electrochemical sensor
Sampling method Diffusion type
Target gas Carbon Monoxide
Detection range
0-400ppm
(Service range: F.S. value to 1000ppm)
Display Four-digit LCD with backlight, resolution 1ppm
Alarm set value (AL1/AL2) F.S.400ppm: 50/150ppm
Indication accuracy
*1
+/- 30% of the alarm set value
Alarm delay
Alarm is triggered in less than 60 seconds after exposure to test
gas (80ppm)
Alarm
▪
Gas alarm (in two stages)
1
st
stage alarm: AL1 alarm light flashes (lit if the audio alarm is
muted), orange status indicator sequentially-flashes, audio
alarm sounds, and AL1 icon is displayed on LCD.
2
nd
stage alarm: AL1 and AL2 alarm lights flash (lit if the audio
alarm is muted), red status indicator sequentially-flashes, audio
alarm sounds, and AL1 and AL2 icons are displayed on LCD.
▪
Alarm clearance method: selectable to manual-resetting or
self-resetting at the time of order.
External output
▪
Gas concentration analog output
*2
4-20mADC (common negative with power supply)
(Current sensing resistor must be 300Ω or less including a
wiring resistance)
▪
Gas alarm relay contacts (in two stages)
Dry normally open contacts, selectable to manual-resetting or
self-resetting at time of order
(Max load: 0.5A at 125VAC or 2A at 30VDC (resistance load)
▪
Fault alarm relay contact
Dry normally open contact, self-resetting
(Max load: 0.5A at 125VAC or 2A at 30VDC (resistance load)
Explosion-proof Not explosion-proof
Other features
Maintenance mode used to disable gas alarm relay contacts,
audio alarm mute, and backup battery used in the event of power
outage.
Applicable cable 0.5-1.25mm
2
shielded cable. Outer diameter: less than 10.5mm
Cable length Up to 500m
Operating temperature and
humidity
-5 to +40°C, 30 to 85%RH (No rapid temperature/humidity
changes. No condensation)
Power supply 24VDC+/-10%
Power consumption 1W during normal operation, 3W during alarm
Dimensions W82 x H150 xD35 mm (excluding protruding parts)
Weight Approx. 300g
Mounting method Wall mounting, indoor
*1: Under identical measurement conditions.
*2: Output concentration value is within the detection range.