Duomo CO100Ar Manual

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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 elec trochemical sensor

technology provides

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

a l o n e i n t r u m e n t o r c a n b e c o n n e c te d t o t h e

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.

w: www.duomo.co.uk

c detection of carbon

DO NOT TEST THIS SENSOR WITH ANYTHING OTHER THAN DUOMO

TEST GAS, 350ppm CARBON MONOXIDE IN AIR.

above this will damage the sensor and shorten sensor life.

e: [email protected]

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)

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.

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.

t: 01905 797989

CO100Ar Sensor

Concentrations

f: 01905 774296