Duomo CO100Ar Manual Download Page 1

CO100Ar Sensor

Application

Duomo is recognised within the gas industry for
providing a comprehensive range o ow cost, high
reliability gas detection for many applications. We
have installed and commissioned natural gas and
carbon monoxide sensors in applications such as
boiler rooms, kitchens, car parks, aircraft hangers,
factories and shopping centres. The CO100Ar
constantly monitors the carbon monoxide levels in
its environment. The electrochemical sensor
technology provides

c detection of carbon

monoxide. Rugged construction and IP55 protective
rating make this unit ideal for damp conditions such
as car parks. The CO100Ar can be used as a stand
alone intrument or can be connected to the
BX444M, GS300M, GS100M and BX150 controllers. A
20mA signal will be derived from the device when
alarm thresholds are reached. These are 300ppm
instantaneous alarm, 100ppm alarm in 10 minutes,
30ppm alarm in 12 hours.This device, in conjunction
with the above mentioned controllers can be used
to control gas valves, sirens or air extract systems.

Operation

The CO100Ar is a carbon monoxide sensor which
provides both a linear 4 - 20mA output and a time
weighted average output. The sensor automatically
calculates carbon monoxide concentration relative
to time (Time Weighted Average) and will give a
20mA output from terminal 3 should the carbon
monoxide levels remain above predetermined
levels for extended periods. This is useful when
carbon monoxide levels are likely to drop rapidly
when extract fans are boosted. Thus the TWA
threshold may not be reached but an indication of
actual carbon monoxide levels is required for BMS
and ventilation interfacing. The unit also has volt-
free relays for sensor fault, CO alarm level (at
300ppm) and a time weighted average alarm.

12 - 24V DC supply
IP55 protective rating
IP65 sintered head
Electrochemical sensor technology
4 - 20mA linear output and TWA
CE cer

d No. 96125

BS EN50291 Compliant
3 year guarantee (from date of
manufacture)

i

CAUTION! Carefully read the following instructions
prior to installation of this device. Always keep this
pamphlet for future reference. Ensure that the gas
detection system is wired correctly and is only used
for the purpose for which it is intended.

DO NOT TEST THIS SENSOR WITH ANYTHING OTHER THAN DUOMO
TEST GAS, 350ppm CARBON MONOXIDE IN AIR.

Concentrations

above this will damage the sensor and shorten sensor life.

w: www.duomo.co.uk

-

e: [email protected]

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t: 01905 797989

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f: 01905 774296

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© Duomo (UK) Ltd. 2016

Summary of Contents for CO100Ar

Page 1: ...a time weighted average output The sensor automatically calculates carbon monoxide concentration relative to time Time Weighted Average and will give a 20mA output from terminal 3 should the carbon monoxide levels remain above predetermined levels for extended periods This is useful when carbon monoxide levels are likely to drop rapidly when extract fans are boosted Thus the TWA threshold may not ...

Page 2: ...as appliances the ventilation of the environment and the elimination of combustion products in accordance with local recommendations regulations and byelaws For any damage caused to people property or animals resulting from incorrect connection installation or application of this gas detector Duomo will not be held responsible or liable 1600 Replacing Sensor When replacing sensors NEVER seperate a...

Page 3: ...ind the cause of the alarm If the alarm sound remains constant and the cause is not evident or possible to eliminate turn off the emergency isolation valves to the area and contact your gas provider emergency line They will advice accordingly 1 2 3 1 2 3 5 4 6 7 8 FAULT RELAY ALARM RELAY w www duomo co uk e sales duomo co uk t 01905 797989 f 01905 774296 Duomo UK Ltd 2016 TWA Alarm Reaction Times ...

Page 4: ...sor terminal plug when withdrawn and leave the plug disconnected from the sensor so that the Duomo Engineer is the first to power up the unit on site This allows wiring to be checked prior to commissioning and avoids damage due to incorrect connection Guarantees for this product will become void if damage is caused by the installer w www duomo co uk e sales duomo co uk t 01905 797989 f 01905 77429...

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