Horing LIH Industrial Co., LTD. NDKA1 Manual

Carbon Monoxide

1.Introduction

Detector
Model
Power Source
Standby Current
Alarm Current under 65mA
Alarm Sound
Relay Output
Ambient Temperature
Dimensions
Weight
Material

2.Source of CO

1.Home: The heating installation, such as hot-water heaters with gas and
gas stoves, is easy to combust incompletely and then produce CO.
2.Parking lots & garage: The scooters/cars or general machine tools can
exhaust fumes with high concentration.
3.Fire: Smolder is a kind of incomplete combustion. It often occurs before
& after the fire as a disaster and produce a large amount of CO.

3.Symptoms of CO poisoning

CO enters the body through breathing. CO poisoning can be confused with
flu symptoms, food poisoning and other illnesses. Some symptoms include
shortness of breath, nausea, dizziness, light headedness or headaches.
High levels of CO can be fatal, causing death within minutes.
The concentration of CO, measured in parts per million (ppm) is a determining
factor in the symptoms for an average, healthy adult.
Carbon monoxide
The underlying symptom
concentration
50 ppm
No adverse effects with 8 hours of exposure.
200 ppm
Mild headache after 2-3 hours of exposure.
400 ppm
Headache and nausea after 1-2 hours of exposure.
Headache, nausea, and dizziness after 45 minutes; collapse and unconsciousness
800 ppm
after 1 hour of exposure.
1,000 ppm
Loss of consciousness after 1 hour of exposure.
1,600 ppm
Headache, nausea, and dizziness after 20 minutes of exposure.
3,200 ppm Headache, nausea, and dizziness after 5-10 minutes; collapse and unconsciousness
after 30 minutes of exposure.
Headache and dizziness after 1-2 minutes; unconsciousness and danger of death
6,400 ppm
after 10-15 minutes of exposure.
12,800 ppm Immediate physiological effects, unconsciousness and danger of death after 1-3
minutes of exposure.
20cm
Detector
Manual
Base
NDKA1 NDKB1
3V DC 12~24V
24uA 800uA
under 40mA
85d B/ 3M and ab ov e
a set of contacts
-10~50℃
102mm(Dia.) × 45mm(H.)
about 150g
fire-proof plastic
Source: NFPA's Fire Protection Handbook, 20th Edition.
Model: NDKA1

4.Recommended mounted location

Mounting detector in the house with heating installations, furnaces or
garages, such as living room, corridor, kitchen, boiler room, parking lot,
basement and so on.
Installed quantity should correspond to the room size to make sure the
best warning effect.

5.Not recommended mounted location

1. Keep a distance of above 1.5m from any heating installations or avoid
mounting right above.
2. Avoid mounting in the house with full of dust, pollution, dirt, grease
and high humidity.
3. Avoid mounting around air vent, conditioner vent and the ceiling fan.
4. If there are any volatile chemicals in the mounting place, they should
be sealed well in case that volatile gas will bring about detector
malfunction.If the house is being refurbished and painted, please
dismantle the detector and store away. After all is done, please install
it back.

6.Mounting Detector

A. Hang on wall
Remove/Affix
B. Screw
(Screw to ceiling/wall)
NDKB1
(Standalone) (System)
Hang on wall
Lock
(twist clockwise to lock)
Open
(twist counterclockwise to open)