Product datasheet
Contents
1. 46 6mm m q i j m 85mm 33 4mm f E 4 Input Out a UOMO 01905 774296 Duomo UK Ltd 20072. CellAir CO Detector UOMO Application Thankyou for selecting the Duomo CellAir CO 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 in confined spaces are dangerous and may lead to health problems ranging from headaches and fatigue to asphyxiation and death CellAir has an audible alarm and visual indication which will activate when CO concentration reaches a pre set level Detection of high levels of CO will also activate a relay that could be used for a fan to ventilate the confined space and reduce CO concentration in the area CellAir can be widely used in CO storage areas breweries wineries cellars beverage dispensing areas and fast food outlets Package Contents SEU Sensor Unit RDU Remote Display Unit panel holders network cable connector communication cable 8m length fixtures and fittings user manual w www duomo co uk e sales duomo co uk t 01905 797989 01905 774296 m NDIR Non Dispersive Infrared sensor m Measures up to 50 000ppm m Can handle up to 3 remote display units 1 up to 25m away 3 up to 8m apart m Large LCD display indicates ambient m CO concentration and temperature m Relay output to automatically control a fan to ventilate confined spaces m Audible and visual alarm indications m P54 water proof protection Specifications CO Specification
3. Measurement range 0 50 000ppm Accuracy 100ppm or 5 of reading Temperature Specification Measurement range 0 C 50 C 32 F 122 F 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 0 C 40 C 32 F 104 F Humidity range 0 95 RH Storage Conditions Storage temperature 20 C 60 C 4 F 140 F Power Supply amp 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 lt 20ppm year 400ppm Calibration User calibration via onboard menu system Recommended calibration interval 2 years Duomo UK Ltd 2007 SEU Sensor Unit Function Instruction The SEU should be placed in a room where the CO is likely to accumulate such as a room where CO is stored like an area with CO beverages The large LCD displays the ambient CO concentration and the temperature 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 CO concentration default is 1 5 AL2 Sets the 2nd alarm level to 1 5 2 2 5 3 3 5 or 4 CO concentration default is 3 When CO concentration exceeds the first alarm level the
4. ler sounds sounds Er5 amp Er6 Er7 flashes Power the unit down then back Er5 EEPROM flash Fault LED Fault LED up If Er5 amp Er6 still appears Er6 System problem flashes Alarm flashes Alarm please return the unit to the sounds sounds dealer Er7 flashes Er7 flashes Power the unit down then Er7 Internal data transmission Fault LED Fault LED back up Check the error flashes Alarm flashes Alarm communication cable sounds sounds between the SEU and RDU The accuracy of the CO ines parr Power the unit down then back Er8 sensor may deviate from the up If Er8 still appears please flashes Alarm flashes Alarm A actual CO concentration return the unit to the dealer sounds sounds LCD Display Symbols Symbol Meaning Description oie CO concentration ppm Ambient CO concentration 2 55 lt v Temperature Celcius or Fahrenheit Ambient temperature 4 Alarm The unit is in alarm DIAG Diagnostic check The communications between the SEU and RDU are being checked First alarm level AL1 CO concentration exceeds the first alarm level The relay has been activated Second alarm level AL2 CO concentration exceeds the second alarm level DO NOT ENTER THE ROOM Calibration CALI Calibrates the CO sensor based on ambient CO concentration ReFactSet Restore factory setting Recovers factory default settings Lt Escape The CO level is above
5. 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 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 Q 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 Do not place the
6. ss gt 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 Note The second alarm level should be higher than the first alarm level Using the ReFactSet function z PPM Ere Iu 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 1 Choose a suitable location to install the SEU Fix the panel holder on the wall at the recommended height of about 0 45m 1 5 feet from the floor and as close to the manifolds and valves as possible 2 Put the SEU on the panel holder making sure the connection is tight www duomo co uk Fix another panel holder in a suitable location outside the monitored space Push the RDU onto the panel 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 port Communication between the two units is now established The CellAir has one relay output which is pre wired to the SEU The relay can be used to operate an external alarm system or ventilation system It will be triggered when the CO concentration exceeds the firs
7. t alarm level After completing the installation remove the rubber cap from the gas entry point power the unit up and use the DIAG function to verify the connection between the SEU and the RDU e sSales duomo co uk t 01905 797989 f 01905 774296 Duomo UK Ltd 2007 Installation The diagram below details a typical installation scenario of the CellAir unit For advice on where and how to install this unit please contact Duomo UK Ltd on 01905 797989 Fan for i ventilation a SEU Sensor unit Power supply supply for fan x gt RDU Repeater Layout amp Dimensions A LCD display B FLT LED Fault indication C AL1 LED Alarm 1 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 mgoanw nm O OK LED Power indication P AL1 LED Alarm 1 Q AL2 LED Alarm 2 R FLT LED Fault indication S LCD display T Enter button U U Mode button V RJ45 plug for SEU Input W RJ45 plug for next RDU Output w www duomo co uk e sales duomo co uk t 01905 797989 124 8mm
8. the second alarm level Action must be taken High concentration w www duomo co uk e sales duomo co uk t 01905 797989 f 01905 774296 The CO2 concentration is above 5 Duomo UK Ltd 2007 Customising Settings There are several settings on the CellAir that can be altered to personalise it for your application Temperature C F Setting the first alarm parameter LI O26 245 1 Press the gt 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 1 Press gt button until CALI flashes 2 Press the CALI icon shown on the LCD 3 Press and hold for at least 10 seconds The CALI 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 Installation Instructions OOOO 1 Press gt button until AL1 flashes 2 Press the AL1 icon shown on the LCD 3 Press to go through the parameters 4 Press amp again to save the setting Setting the second alarm parameter OOOO 1 Pre
9. unit or the adaptor near a heat source Do not touch the exposed electronic circuitry of the device under any circumstances Please only use the included power adaptor Make sure that the power adaptor is mounted using the plug lock so that it cannot be removed without the 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 before entering the room where the SEU is installed aABWDN OV 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 w www duomo co uk e sales duomo co uk t 01905 797989 f 01905 774296 Duomo UK Ltd 2007 Fault Codes amp Troubleshooting Guide LCD Fault D se SEU RDU s d Acti Icon esctiption Indication Indication uggesteo Acton The ambient temperature has e eel This error will disappear when Er3 exceeded the temperature the temperature returns to f f flashes Alarm flashes Alarm eae range 0 C 50 C within the acceptable range sounds sounds There is an incorrect Era tlashes Era flashes Power the unit down then back Fault LED Fault LED cei a Er4 measurement or the sensor up If Er4 still appears please te flashes Alarm flashes Alarm has exceeded its lifespan return the unit to the dea
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