ANALOX EII CO User manual

EII CO
Technical User Manual
Analox Ltd
15 Ellerbeck Court, Stokesley Business Park
North Yorkshire, TS9 5PT, UK
T: [phone] F: [phone]
W: www.analox.net E: [e-mail]

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 4
List of Contents
1 Introduction ........................................................................................................................6
1.1 Scope of this Manual.....................................................................................................6
1.2 About the EII CO............................................................................................................6
2 Calibration..........................................................................................................................7
2.1 Items required................................................................................................................7
2.2 Calibration procedure ....................................................................................................7
3 Safety Information............................................................................................................12
4 Spares..............................................................................................................................13
5 Disposal ...........................................................................................................................14

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 5

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 6
1 Introduction
1.1 Scope of this Manual
This Technical manual is supplementary to the EII CO User Manual (P107-800). This manual
details the procedure for performing a zero and span calibration of the EII CO. For general
details of using and maintaining the EII CO please refer to the EII CO user manual
1.2 About the EII CO
The EII CO carbon monoxide analyser is designed to measure CO levels in the range 0 to
50ppm for tank CO level checking.
The EII CO is ergonomically designed, and equipped with several features to ensure ease of
use and reliability. The instrument has been designed to be held in the left hand to facilitate
checking your tank. It is fitted with a large digital display and incorporates an internal
electrochemical carbon monoxide sensor. Power is provided by a 9V battery which will last
for approximately 1 year before replacement is necessary. The EII CO will automatically
switch off after 10 minutes to ensure battery life is not compromised if the instrument is
accidentally turned on.
The EII CO is water and drop resistant. Designed specifically for the diving industry – whether
you may be a Sport, Commercial or Military diver - where hostile environmental conditions are
the norm not the exception.

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
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2 Calibration
2.1 Items required
To calibrate the EII CO the following items are required:
1. Calibration tool kit (Part number: SA7EIICOTOOLKIT)
2. Zero calibration gas kit (Part number: SA7EIICOZCALKIT)
3. Span calibration gas kit (Part number: SA7EIICOCALKIT)
2.2 Calibration procedure
1. Using a flat blade screwdriver loosen the 4 M2.5 slotted screws located on the front
cover (these are captive screws so can not be fully removed from the cover). The
gasket seal is designed to prevent water leaking into the EII CO so the seal may be
tight. Loosen the seal by moving the lid from side to side, and then and carefully lift
the cover.
2. Using the T10 torx driver from the Calibration Tool Kit remove the two silver
M3x14mm T10 Torx Plastite screws through the front of the middle section
Remove screws
3. Temporarily refit the front cover and secure in place.

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
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4. Using the T10 torx driver remove the two black M3x16mm T10 Torx Plastite screws
and black fibre washers. Remove the rear cover.
5. Screw the flow indicator on to the zero calibration cylinder (synthetic air) and fit the
flow adaptor to the tubing.
Flow indicator fitted
Flow adaptor fitted
6. Remove the sample dome and attach the flow adaptor to the sensor port. Press the
ON button to switch the EII CO on.
Flow adaptor fitted

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 9
7. Open the control valve of the flow indicator to set the flow indication ball between the
two markers. Allow the gas to flow for 2 minutes and ensure the display reading is
settled.
Flow indicator set
8. Using the external Zero calibration knob, adjust the display to read’000’.
Display set to ‘000’
9. Close the control valve of the flow indicator. Remove the control valve from the zero
calibration cylinder and fit it to the span calibration cylinder (10ppm carbon monoxide
in balance air).
10. Open the control valve of the flow indicator to set the flow indication ball between the
two markers. Allow the gas to flow for 2 minutes and ensure the display reading is
settled.
11. Using the trimming tool from the calibration tool kit, adjust the internal trimmer until
the display reads '010' (± 1).
Trimmer
Flow
markers

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 10
Display set to ‘010’
12. Close the control valve of the flow indicator and remove the flow adaptor from the
sensor port. Refit the sample dome in to the sensor port.
13. Place the lanyard loop over the dowel pin then fit the back cover in place, making
sure the CO sensor lead runs down the rear of the battery compartment as shown.
Affix the cover using the two M3x16mm screws and fibre washers.
Replace back cover and refit screws
14. Remove the front cover then fit the two silver M3x14mm T10 Torx Plastite screws
through the front of the middle section; these will secure the rear section in place.
Refit screws

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 11
15. Feed the CO sensor cable so that it curls around the inside of the middle section, fit
the red front section. Secure in place with the four M2.5 slotted screws, taking care
not to trap or damage the CO sensor wiring.
Reassembled EII CO
End of procedure

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 12
3 Safety Information
When the life of the battery has expired it should be disposed of safely in accordance with
local regulations.
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.
The sensor contains an acidic electrolyte which is hazardous. In the event of an accident,
use the following 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.

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 13
4 Spares
The EII CO can be supplied with any of the following accessories;
Item Description Part Number
Storage Case; compact
water proof case ideal for
protecting your EII CO.
SA2EIIMINICASE
Bump test gas kit
10ppm CO in balance air
Providing around 20 bump
tests from a standard bump
test kit.
SA7CAN510
Span calibration gas cylinder
10ppm carbon monoxide in
balance air
SA7EIICOCALKIT
Zero calibration gas cylinder
Synthetic air
21% oxygen balance
nitrogen
SA7EIICOZCALKIT
Calibration tool kit
Comprising:
Trimming tool
T10 torx driver
Flow indicator for gas bottles
EII CO push-in cal adaptor
EII CO calibration DVD
Analox 500Mb USB stick
SA7EIICOTOOLKIT

EII CO Technical User Manual
Document Ref: P0107-801-00 - February 2011
Page 14
5 Disposal
According to WEEE regulation this electronic product can not be placed in household waste
bins. Please check local regulations for information on the disposal of electronic products in
your area.