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CO Clear 
User Manual 

Int. Approved 

 

Document ref: ACO-810-28 

October 2018 

Page 4 of 24

 

 

 

 

Copyright © 2006 Analox Ltd. All Rights Reserved. 

 
 

Commercial in Confidence 

1

 

Safety information 

1.1

 

Electrochemical sensors (

Carbon monoxide) 

 
Electrochemical sensors contain toxic compounds. Under normal conditions the sensor will 
be safely sealed. To prevent leakage, the unit must not be exposed to temperatures 
outside the specified range, or be exposed to organic vapours, which may cause physical 
damage to the body of the sensor. The unit must not be stored in areas containing organic 
solvents or in flammable liquid stores. 
 
When the life of the sensor has expired, or it is leaking or otherwise damaged it must be 
disposed of safely in accordance with local regulations. 
 
Carbon monoxide cell contains an acidic electrolyte (sulphuric acid).  In the event of an 
accident, use the following first aid procedures. 
 

Table 1 

Electrochemical sensor first aid procedures

 

Body 
Part 

Effect 

First Aid Procedures 

Skin 

Contact could result in a chemical burn.  
 
Persons with pre-existing skin disorders 
may be more susceptible to the effects 
of the substance. 

Immediately flush the skin thoroughly 
with water for at least 15 minutes.  
 
Remove contaminated clothing and wash 
before re-use.  
 
Obtain medical advice if continued 
irritation. 

Ingestion 

Corrosive. May cause sore throat, 
abdominal pain, nausea, and severe 
burns of the mouth, throat, and 
stomach, and may be fatal. 

If swallowed DO NOT INDUCE VOMITING.  
 
Wash out mouth thoroughly with water 
and give plenty of water to drink.  
 
Obtain medical advice immediately 

Eye 

Persons with pre-existing eye problems 
may be more susceptible to the effects 
of the substance. 
 
Corrosive. May cause redness, pain, 
blurred vision, and eye burns.  
 
Contact can result in the permanent loss 
of sight.  

Irrigate thoroughly with water for at least 
15 minutes.  
 
Obtain medical advice immediately. 
 
 

Inhalation   Persons with pre-existing impaired 

respiratory function may be more 
susceptible to the effects of the 
substance. 
 
Inhalation is not an expected hazard 
unless heated to high temperatures. 
 
Mist or vapour inhalation can cause 
irritation to the nose, throat, and upper 
respiratory tract. 

Remove to fresh air.  
 
Rest and keep warm.  
 
Obtain medical advice if applicable. 
 

 
Should leakage of any electrolyte occur as a result of misuse, incorrect operation, 
manufacturing error, physical damage, etc. then wear protective gloves when cleaning any 
spills. Should electrolyte contact skin then the affected area should be washed thoroughly 
with copious water and medical advice sought if there has been any contact with the eyes 
or mouth. If connected to any electrical equipment, the sensor should be immediately 
removed. 

 

Summary of Contents for CO Clear

Page 1: ...Analox Ltd 15 Ellerbeck Court Stokesley Business Park North Yorkshire TS9 5PT UK T 44 0 1642 711400 F 44 0 1642 713900 W www analox net E info analox net CO Clear User Manual Commercial in Confidence...

Page 2: ......

Page 3: ...ble 10 6 1 AC supply models 10 6 2 DC supply models 10 6 3 Alarm repeaters 10 6 4 Alarm relay output models 10 6 5 Relay wiring 11 6 6 4 to 20mA output models 12 7 Operation 13 7 1 Normal operation 13...

Page 4: ...re re use Obtain medical advice if continued irritation Ingestion Corrosive May cause sore throat abdominal pain nausea and severe burns of the mouth throat and stomach and may be fatal If swallowed D...

Page 5: ...V AC and 230V AC Versions Less than 5W 24V DC Version Mains frequency 50 60Hz The Remote Alarm Repeater has ingress protection to IP43 direct sprays of water up to 60 from the vertical in accordance w...

Page 6: ...r please check you have the following 1 Analox CO Clear main unit and Alarm Repeater 2 User Manual 3 Test Certificate 4 Rawl Plugs and Screws for Wall Mounting 5 Drilling Template 6 Analox CO Clear Wi...

Page 7: ...10 250V AC supply 2 110 120V AC supply 3 9 24V DC supply The Analox CO Clear is intended to be used as a permanent installation It provides a digital readout of Carbon Monoxide and 2 audio and visual...

Page 8: ...e CO cell increases by what we call the compensation factor see Table 1 For example if a CO Clear He measured 3ppm CO in a tank containing 99 He the actual CO content would be 2 1ppm 3 x 0 7 2 1ppm Th...

Page 9: ...wall and use the Rawl plugs and screws provided to mount the unit It is not necessary to dismantle the Analox CO Clear main unit in any way prior to installation You need to ensure the mains plug fus...

Page 10: ...ear enclosure An 8 metre 8 core cable is pre wired to the Analox CO Clear on units to be fitted with an alarm repeater This ensures that for a basic installation there is no need to dismantle the Anal...

Page 11: ...ened Test that the cable is adequately gripped by the cable gland Ensure that the cable is suitable for purpose the load is within the limits of the relay 240VAC 28VDC 2Amps and the insulation of the...

Page 12: ...20mA output models You may have ordered your Analox CO Clear with a 4 to 20mA output A 2m cable is factory fitted to the instrument The 4 to 20mA output current is generated by the instrument The cus...

Page 13: ...n the first alarm level then the Alarm 1 indicator will begin to flash and the buzzer will sound at its slow speed If the measured concentration of CO continues to rise above the second alarm level th...

Page 14: ...ollowing specifications Maximum inlet pressure 200Bar Outlet pressure 0 3 BarG For systems where 1 4 pipe work is used the push fitting in the sensor housing must be swapped out Remove the sensor hous...

Page 15: ...e This housing allows the Carbon Monoxide sensor to be easily replaced when necessary To ensure continuous operation it is recommended to replace the sensor at 18 month intervals The procedure for rep...

Page 16: ...l only connect in one orientation NOTE THE NEW CARBON MONOXIDE SENSOR IS SUPPLIED IN A HOUSING READY TO BE FITTED Carefully feed the sensor wire and sensor housing through into the bulkhead and then f...

Page 17: ...to perform a calibration check you will need the following equipment 10 1 0 to 10ppm in nitrogen range calibration gases Air and Nitrox Kit for use with Analox CO Clear 1 Zero Gas 20 9 O2 in N2 balan...

Page 18: ...the Zero Calibration the Red Alarm 1 LED will turn off and the Green LED will continue to flash Wait one minute for the instrument to adjust When the instrument has a new calibration value the buzzer...

Page 19: ...t has accepted the new Carbon Monoxide value To return to normal operation press the mode switch once The LED s and buzzer will illuminate sound 4 times before returning to normal operation Fully clos...

Page 20: ...ther mode is selected press the Mode switch once to return to Technician Mode and then repeat this selection The display will indicate the present value of the alarm Press the Mode switch twice to pro...

Page 21: ...t the problem contact your qualified service engineer A summary of the indicator lamps and buzzer operations is shown below OK LAMP GREEN ALARM1 LAMP RED ALARM2 LAMP RED FAULT LAMP YELLOW MEANING OFF...

Page 22: ...0x70 mm 6 8x5 11x2 75inches IP Rating Analox CO Clear IP65 Sensor Type Electro Chemical Cell Sensor Life Expected 2 years at Standard Temperature and Pressure Sensor Warranty 9 months graded Electroni...

Page 23: ...f 24 Copyright 2006 Analox Ltd All Rights Reserved Commercial in Confidence 13 Disposal According to WEEE regulation this electronic product cannot be placed in household waste bins Please check local...

Page 24: ...CO Clear User Manual Int Approved Document ref ACO 810 28 October 2018 Page 24 of 24 Copyright 2006 Analox Ltd All Rights Reserved Commercial in Confidence 14 Declaration of conformity...

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