Duomo CO233/A Installation And Instruction Manual

Conformity

EN45544-1-3

100mm

CO233/A autosetting

7 6 5 4 3 2 1

CO233/A Carbon Monoxide Gas Sensor

Installation and Instruction Manual

Description

The CO233/A is a Carbon Monoxide (CO) gas sensor with IP65 protection that, together with a Duomo (UK) GS and BX control units can detect the presence of Carbon Monoxide.

The sensor is fitted with an Electrochemical Cell and is managed by a microprocessor which not only supplies an alarm signal to the Control Unit connected to it, but also allows execution of selfdiagnosis in order to obtain the maximum detection accuracy at any time.

This device is useful when both the maximum CO admissible concentration threshold set to 300ppm is exceeded, and when low

CO concentrations persist in the environment for lengthy periods.

According to the principle of accumulation, could also be toxic. The sensor has a 0-300ppm linear output conforming to the 4-20mA standard.

60mm 6.5mmØ

EN 50270

80mm

Detection

Carbon Monoxide

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CO233/A - Carbon Monoxide Gas Sensor Duomo (UK) Limited - Worcestershire, England

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Duomo (UK) Ltd | Tel: 01905 797989 | email: [email protected] | web: www.duomo.co.uk

Technical Specification

Power supply

Power demand

Switching alarm relay

Fault relay

12 - 24VDC ± 10%

In warm-up 15 mA In Alarm 80 mA max @ 13.8V DC

10 A 250V ~ Resistive 5A 30Vdc resistive SELV

5 A 250V ~ Resistive 5A 30Vdc resistive SELV

Detection

Sensor

Sensor Element range

Sensor

Analog output signal

Carbon Monoxide (CO)

Electrochemical cell range

0-5000 ppm

0-330ppm

4-20 mA standard tolerance

Detector accuracy

Long term shift in clean air

Time

Warm-up time

Time work regime

Functioning humidity

Functioning temperature

USB

1% FS

< + 2ppm

1 to 5 minutes

4 minutes

0-90% non condensed

-20°C to + 50°C

TS1008

Compatible Control units BX444-Mc, GS100M, BX150, GS300M, GS300-Mc, BX316xp

Max. distance between sensor and unit

Cable diameter for connecting sensor

100 m

1 mm

Connection: The sensor connection cables should not be laid with the supply cables. If the cables are laid together with power cables, you must use a shielded cable

Sensor Enclosure

Size

Degree of protection

Aluminium

100 x 100 x 60mm

IP66

INDICATIONS

Regular

Fault:

Main Alarm (Max instant concentration 300 ppm):

TWA (eight hours alarm @ average of 30ppm):

STEL (15 minutes alarm @ 200 ppm):

Red

Cyan

Magenta

Precautions and Maintenence

CHECK the integrity of the unit after having removed it from the box.

Check that the data written on the box correspond to the type of gas used.

When doing the electrical connections, follow the drawing closely.

Any use of the detector for purposes other than the intended one is considered improper and as a result of which Duomo

(UK) therefore disclaims any responsibility for possible damages caused to people, animals or objects.

The installation and maintenance of the CO233/A Sensor and removal at the end of the functional life must be carried out by authorized or specialized personnel.

Do not allow the CO233/A to become wet.

The product is not waterproof either when immersed in water or exposed to high levels of humidity.

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CO233/A - Carbon Monoxide Gas Sensor Duomo (UK) Limited - Worcestershire, England

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Duomo (UK) Ltd | Tel: 01905 797989 | email: [email protected] | web: www.duomo.co.uk

Important Notes

IMPORTANT: Assembly / maintenance of the appliance must be carried out by qualified personnel and in accordance with applicable laws and regulations.

The manufacturer assumes no responsibility for the use of products that have to comply with particular environmental and / or installation standards.

IMPORTANT: Before connecting the equipment, it is recommended that you read the instruction manual carefully and keep it for future reference.

Electrical Connections

IMPORTANT: Before connecting to the mains power, ensure the voltage is correct. Carefully follow the instructions and the connections according to Regulations in force, keeping in mind that the signal cables should be laid separate from the power cables.

NC

ALARM

C NO

C

FAULT

NC

NO

8 7 6 5 4

POWER SUPPLY

12-24VDC

LINEAR OUTPUT

4-20mA

R +

3 2 1

8 7 6 5 4 3 2 1

13122018.Rev3

CO233/A - Carbon Monoxide Gas Sensor Duomo (UK) Limited - Worcestershire, England

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Duomo (UK) Ltd | Tel: 01905 797989 | email: [email protected] | web: www.duomo.co.uk

Display Indications

0 ppm

GREEN

When the display is Green in colour with a gas concentration in parts per million (ppm). This indicates that the toxic gas threshold has not been exceeded.

CON

WHITE

When the display shows the White colour and text ‘Con’ is shown. It indicates that the testing instrument is connected.

FAU

YELLOW

When the display shows the Yellow colour and text

‘FAU’ is shown. It indicates a sensor fault. This immediately triggers the fault relay.

Sta

8HA

300 ppm

MAGENTA

When the display shows the Magenta colour and text

‘StA’ is shown. It indicates that the maximum average concentration to which an unprotected worker may be exposed in any fifteen-minute interval during the day has been detected (200ppm) and the main alarm relay has triggered.

CYAN

When the display shows the Cyan colour and text ‘8hA’ is shown. It indicates the maximum average concentration to which an unprotected worker may be exposed in any eight-hour interval during the day has been detected (30ppm) and the main alarm relay has triggered.

RED

When the display shows the Red colour and a gas concentration in ppm is shown. It indicates the toxic gas threshold has been reached or passed. If the 300 ppm has detected the main alarm relay is triggered immediately.

Positioning of the Sensor

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Carbon Monoxide

Detection

The position of the sensor is a crucial factor for its correct functioning. The sensor must be placed at a height of:

160 cm from the lowest point on the floor up to 30 cm from the ceiling, and in all cases at an average height in the monitored area.

Detection

Carbon Monoxide

CO233/A autosetting

The sensor must not be placed near the following: furnaces, fuel-burning kitchen appliances, fireplaces, ranges, suction fans, and should not be affected by smoke, vapour as these could distort its measurement.

The sensor must not be placed away from sources of heat, suction fans, ventilation fans, windows, doors, etc. that can distorting the detection, should be placed away from heat sources and away from aspirators or fans.

Important Notes

IMPORTANT: Assembly / maintenance of the appliance must be carried out by qualified personnel and in accordance with applicable laws and regulations.

The manufacturer assumes no responsibility for the use of products that have to comply with particular environmental and / or installation standards.

IMPORTANT: Before connecting the equipment, it is recommended that you read the instruction manual carefully and keep it for future reference.

Troubleshooting

If the device does not start up.

Check that the 12/24 VDC power is present, and that positive and negative polarity has not been inverted.

If the Fault LED condition occurs.

Check that the cables are connected according to the drawing, and that the wire isolation sheath has not been pinched.

Check the voltage at the terminals 1-2. It must be higher than 11 VDC and lesser than 25VDC.

Check the voltage at the terminals 2-3. It must be from a minimum of 0.8 VDC to a maximum of 1.1 VDC.

13122018.Rev3

CO233/A - Carbon Monoxide Gas Sensor Duomo (UK) Limited - Worcestershire, England

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Duomo (UK) Ltd | Tel: 01905 797989 | email: [email protected] | web: www.duomo.co.uk