Duomo CellAir User Manual

CellAirTM CO2 Detector

NDIR (Non-Dispersive Infrared) sensor Measures up to 50,000ppm Can handle up to 3 remote display units; 1 up to 25m away, 3 up to 8m apart Large LCD display indicates ambient CO2 concentration and temperature Relay output to automatically control a fan to ventilate confined spaces Audible and visual alarm indications IP54 water proof protection

Application

Thankyou for selecting the Duomo CellAirTM CO2 monitor. It is designed to detect the presence of carbon dioxide in the ambient air to protect people in confined spaces. High concentrations of CO confined spaces are dangerous, and may lead to health problems ranging from headaches and fatigue to asphyxiation and death. CellAir audible alarm and visual indication which will activate when CO level. Detection of high levels of CO activate a relay that could be used for a fan to ventilate the confined space and reduce CO concentration in the area. CellAir used in CO cellars, beverage dispensing areas and fast food outlets.

concentration reaches a pre-set

can be widely

storage areas, breweries, wineries,

will also

has an

Package Contents

SEU (Sensor Unit), RDU (Remote Display Unit), panel holders, network cable connector, communication cable (8m length), fixtures and fittings, user manual.

Specifications

CO2 Specification

Measurement range - 0 - 50,000ppm Accuracy - ±100ppm or ±5% of reading

Temperature Specification

Measurement range - 0oC - 50oC (32oF - 122oF)

Alarm Levels

Alarm 1 - 0.5 / 1 / 1.5 / 2% Alarm 2 - 1.5 / 2 / 2.5 / 3 / 3.5 / 4%

Operating Conditions

Operating temperature - 0oC - 40oC (32oF - 104oF) Humidity range - 0 ~ 95%RH

Storage Conditions

Storage temperature - -20oC - 60oC (-4oF - 140oF)

Power Supply & Relay Output

AC adapter - 110/220 VAC AC input - 100 ~ 240 VAC, 50/60Hz AC output - 6 VDC, 1.8 W Relay output - 30 VDC or 250 VAC, max. 2A, SPST, NO

Accuracy

Annual drift < 20ppm / year @ 400ppm

Calibration

User calibration via onboard menu system Recommended calibration interval - 2 years

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SEU (Sensor Unit) Function Instruction

The SEU should be placed in a room where the CO2 is likely to accumulate such as a room where CO2 is stored, like an area with CO

The SEU has several functions. These are;

"DIAG" - Performs a communication test between the SEU and RDU.

"CALI" - Calibrates the unit to the ambient air.

"ReFactSet" - Restores the unit to its factory default settings.

"AL1"- Sets the 1st alarm level to 0.5, 1, 1.5 or 2% CO2 concentration (default is 1.5%).

"AL2" - Sets the 2nd alarm level to 1.5, 2, 2.5, 3, 3.5 or 4% CO2 concentration (default is 3%).

When CO2 concentration exceeds the first alarm level, the red AL1 LED will blink and the alarm will sound intermittently. At this stage, the relay will be actuated. When levels drop back below the alarm level, the LED will stop blinking and the alarm will stop sounding.

beverages. The large LCD displays the ambient CO2 concentration and the temperature.

When concentrations exceed the second alarm level, both AL1 and AL2 LED's will flash and the alarm will sound more quickly. The alarm will remain in this state until the button has been pressed.

In the case of very high concentrations, 'ESC' will appear on the screen of the unit. It is imperative that the area be completely ventilated and that no one enters the area until concentrations have dropped. To reset the unit, use the "ReFactSet" function.

RDU (Remote Display Unit) Function Instruction

The RDU (Remote Display Unit) should be placed outside the room which is being monitored. This unit is connected to the SEU by the communication cable provided. It should be placed where it can be conveniently seen before entering the room where the SEU is located. The RDU is a repeater and displays the measurements made by the SEU on an LCD. The RDU can be placed a maximum of 24 metres (78.7 feet) away from the SEU.

The RDU also has the "DIAG" function to test the comms between the SEU and the RDU.

Safety Notes

Warning: To ensure this product is used correctly and safely, please read these warnings and the entire user manual before use.

Please handle the device carefully; do not subject the product to impact or shock.

1. Do not place the unit, or the adaptor, near a heat source.

2. Do not touch the exposed electronic circuitry of the device under any circumstances.

3. Please only use the included power adaptor.

4. Make sure that the power adaptor is mounted using the plug lock so that it cannot be removed without the

5. use of tools. DO NOT enter the room when "ESC" is displayed on the LCD of the SEU or RDU. Some action must be taken

6. before entering the room where the SEU is installed.

Maintenance

We recommend that users test the communication between the SEU and RDU using the "DIAG" function periodically. If the four LED's flash and the alarm sounds on both units then the system is functioning normally.

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Fault Codes & Troubleshooting Guide

LCD Fault

Icon

Er3

Er4

Er5 Er6

Er7

Description

The ambient temperature has

exceeded the temperature

range (0

There is an incorrect

measurement or the sensor

has exceeded its lifespan

System problem

Internal data transmission

C - 50oC)

EEPROM

error

SEU

Indication

"Er3" flashes,

Fault LED

flashes, Alarm

sounds

"Er4" flashes,

Fault LED

flashes, Alarm

sounds

"Er5" & "Er6"

flash, Fault LED

flashes, Alarm

sounds

"Er7" flashes,

Fault LED

flashes, Alarm

sounds

RDU

Indication

"Er3" flashes,

Fault LED

flashes, Alarm

sounds

"Er4" flashes,

Fault LED

flashes, Alarm

sounds

"Er7" flashes,

Fault LED

flashes, Alarm

sounds

"Er7" flashes,

Fault LED

flashes, Alarm

sounds

Suggested Action

This error will disappear when

the temperature returns to

within the acceptable range

Power the unit down, then back

up. If "Er4" still appears, please

return the unit to the dealer

Power the unit down, then back

up. If "Er5" & "Er6" still appears,

please return the unit to the

dealer

Power the unit down, then

back up. Check the

communication cable

between the SEU and RDU

The accuracy of the CO

Er8

sensor may deviate from the

actual CO

concentration

LCD Display Symbols

CO2

Temperature (Celcius or Fahrenheit) Ambient temperature

DIAG

AL1

CO2 concentration (ppm) Ambient CO2 concentration

Diagnostic check

"Er8" flashes,

Fault LED

flashes, Alarm

sounds

MeaningSymbol Description

Alarm The unit is in alarm

First alarm

level

"Er8" flashes,

Fault LED

flashes, Alarm

sounds

The communications between the

SEU and RDU are being checked

first alarm level. The relay has been

Power the unit down, then back

up. If "Er8" still appears, please

return the unit to the dealer

CO2 concentration exceeds the

activated

AL2

CALI

ReFactSet

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Second alarm

level

Calibration

Restore factory setting

Escape

High concentration

CO2 concentration exceeds the

second alarm level. DO NOT

ENTER THE ROOM.

Calibrates the CO2 sensor based on

ambient CO

Recovers factory default settings

The CO2 level is above the second alarm

level. Action must be taken.

The CO2 concentration is above 5%

concentration

Customising Settings

There are several settings on the CellAirTM that can be altered to personalise it for your application.

Temperature oC/oF

CO2

1. Press the button to switch between oC and oF

Using the "DIAG" function

CO2

DIAG DIAG

CO2

1. Press the button until "DIAG" flashes

2. Press , the four LED's on the SEU will flash and its alarm will sound

3. The four LED's on the RDU will flash and its alarm will sound

Using the "CALI" function

Setting the first alarm parameter

CO2

AL1 AL1

CO2

1. Press button until "AL1" flashes

2. Press , the "AL1" icon shown on the LCD

3. Press to go through the parameters

4. Press again to save the setting

Setting the second alarm parameter

CO2

AL2 AL2

CO2

1. Press button until "AL2" flashes

2. Press , the "AL2" icon shown on the LCD

3. Press to go through the parameters

4. Press again to save the setting

CO2

CALI CALI

CO2

the first alarm level.

Using the "ReFactSet" function

Note: The second alarm level should be higher than

Press button until "CALI" flashes

1. Press , the "CALI" icon shown on the LCD

2. Press and hold for at least 10 seconds. The "CALI"

3. icon will flash and the unit will calibrate automatically. After 10 minutes the LCD will display "Pass" or "Fail". If "Fail" appears please try calibrating the unit again.

Note: If possible, calibrate the SEU outside in ambient air. Wait 10 minutes for the unit to stabilise before calibrating. DO NOT breathe on or near the unit during calibration.

ReFactSet ReFactSet ReFactSet

1. Press button until "ReFactSet" flashes

2. Press , then to select either "Yes" or "No"

3. Press again to save the setting

Only use this function if you wish to return the sensor to its factory default settings, or if the unit displays "ESC" on the LCD under conditions of very high concentrations.

CO2

Installation Instructions

Choose a suitable location to install the SEU. Fix the panel holder on the wall at the recommended height of

1. about 0.45m (1.5 feet) from the floor and as close to the manifolds and valves as possible. Put the SEU on the panel holder, making sure the connection is tight.

2. Fix another panel holder in a suitable location outside the monitored space. Push the RDU onto the panel

3. holder and stick the warning paper next to the RDU. The communication cable is pre-wired to the SEU. Route this through to the RDU and plug it into the input

4. port. Communication between the two units is now established. The CellAirTM has one relay output which is pre-wired to the SEU. The relay can be used to operate an external

5. alarm system or ventilation system. It will be triggered when the CO level. After completing the installation, remove the rubber cap from the gas entry point, power the unit up and use

6. the "DIAG" function to verify the connection between the SEU and the RDU.

concentration exceeds the first alarm

CO2

Installation

The diagram below details a typical installation scenario of the CellAirTM unit. For advice on where and how to install this unit please contact Duomo (UK) Ltd. on 01905 797989.

Fan for

ventilation

Power

supply

for fan

Press to scroll through adjustment modes, Once mode is selected,press to this mode. Press to adjust setting. Press to again to save setting CALI:Press&hold for 10s to calibrate outside. DIAG:To verify the communication function. ReFactSet:Choose yes to recover factory setting.

>5.00% >4.00% >3.00% >1.50% >5000PPM >1000PPM <1000PPM

Layout & Dimensions

G H

FLT

AL2

AL1

IJK

SEU (Sensor unit)

Convulsions,instant paralysis and death Immediate danger of serious injury or death Muscular pains,unconsciousness and spasms Respiratory problems and increased heart rate Feel headache,sleepy,dull,loss of concentration Complaints of stiffness and odors,general drowsiness Acceptable and comfortable CO2 level

A. LCD display

B. FLT LED (Fault indication)

C. AL1 LED (Alarm 1)

D E

D. AL2 LED (Alarm 2) E. OK LED (Power indication)

F. Reset button G. Mode button H. Enter button I. Communication cable

to RDU J. Relay output K. Power supply L. Rubber cap M. Gas entry

RDU Repeater

Convulsions,instant paralysis and death

>5.00%

Immediate danger of serious injury or death

>4.00%

Muscular pains,unconsciousness and spasms

>3.00%

Respiratory problems and increased heart rate

>1.50%

Feel headache,sleepy,dull,loss of concentration

>5000PPM >1000PPM

Complaints of stiffness and odors,general drowsiness

<1000PPM

Acceptable and comfortable CO2 level

46.6mm124.8mm

167.7mm

Q RPO

O. OK LED (Power indication)

33.4mm85mm

P. AL1 LED (Alarm 1)

OK AL1 AL2 FLT

Q. AL2 LED (Alarm 2) R. FLT LED (Fault indication) S. LCD display T. Enter button

T U

U. Mode button

117.5mm

V. RJ45 plug for SEU (Input) W. RJ45 plug for next RDU

Input

Output

Input

Output

(Output)

Duomo CellAir User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual