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ガス検知器 Duomo CHCOのPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。Duomo CHCO 10 ページ。 Natural gas and carbon monoxide detector-type a
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Contents
Table 1. Carbon Monoxide Alarm
Thresholds.
Table 2- Health effects of COHb blood
levels on healthy adults
11. Emergency Actions upon alarm
- Natural Gas Alarm
- Carbon Monoxide Alarm
12. Emergency Actions upon alarm
- Other considerations
14. Anticipated lifetime of sensor
15. Warranty
1. Application
The Duomo CHCO detects the presence Natural
gas and carbon monoxide using dual sensor tech-
nology.
The Duomo CHCO detector is ideally suited for
people with some physical disability that might de-
lay a manual response to an alarm. It is a fixed, wall
mounted system with a permanently connected
230 Volt electrical supply.
The CHCO is fitted with an output function for trig-
gering different ancillary devices, for example Gas
Shut-off valve. If the apparatus is installed in homes
equipped with gas appliances, the output signal
may be used for triggering a shut-off valve on the
incoming mains gas pipe. Such a valve should re-
quire a manual action for resetting to the open po-
sition - see Duomo Type EVRM Valves.
For CO detection in addition to shutdown of the in-
coming gas supply, the CHCO can also start a Ven-
tilation fan. See Important Note regarding Ventila-
tion fan.
2. Technical specification:
Product description: Type A Gas Detector for Natural
Outputs: Alarm relay (Volt-free) for Carbon Monoxide
Alarm relay (Volt-free) for Natural Gas
Conformity:
BS EN 50291, BS EN 50194, CEI 216-3,
BS EN 50270, BS EN 61010
Warranty Period: 2 year warranty - extendible to 3
years by registering online
Continuous Power Supply: 230V +/- 10% 50/60Hz.
Power consumption: 3.5 Watts at 230 V.
External Supply Fuse Rating: 5A
Compatible Gas valve: MANUAL RESET ONLY.
Protective Rating: IP 42
Working Temperature: From -10ºC up to 40ºC
Operational Humidity Range: 0-90% condensing
Sensor Types:
Carbon Monoxide - Nemoto Electrochemical
Natural Gas - Nemoto Catalytic
CE Certification Number: 96125
Dimensions: L 150mm , W 115mm, D 53mm.
Interconnecting Cable size: 1mm
Maximum permissible output Load: 4A
Alarm Conditions:
Natural Gas Alarm at > 10% LEL.
Table 1 - Carbon Monoxide Alarm thresholds
CO Concentration
Without alarm be-
30
50
100
300
Gas and Carbon monoxide.
See Duomo EVRM Type valves
With alarm before
fore (minutes)
(minutes)
120
60
10
-
-
90
40
3