Envitec OxiQuant B User manual

OxiQuant B
Oxygen meter
Instructions for use

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Table of contents
Table of contents..................................................................................... 2
1. Safety instructions.............................................................. 3
1.1. General safety instructions.......................................... 3
1.2. Safety instructions for oxygen sensor.......................... 3
2. Introduction......................................................................... 5
3. Controls and symbols......................................................... 6
4. Start-up............................................................................... 7
5. Calibration and measurement accuracy............................. 8
5.1. Calibration using ambient air....................................... 8
5.2. Calibration to 100% O2................................................ 8
5.3. Errors during calibration and measurement ................ 9
5.4. Influencing factors....................................................... 9
6. EnviteC oxygen sensor..................................................... 11
6.1. Function principle...................................................... 11
6.2. Sensor service life..................................................... 11
6.3. Changing the sensor................................................. 12
6.4. Packaging and storage.............................................. 12
7. Cleaning........................................................................... 13
8. Accessories...................................................................... 13
9. Specifications and characteristics..................................... 14
10. Declaration of Conformity................................................. 15

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1. Safety instructions
1.1. General safety instructions
These instructions for use are an integral part of the equipment. They should at
all times be kept near the equipment.
In order to use the equipment intended, to handle it correctly and so use the
equipment safely, exact compliance with the instructions for use is necessary.
The symbol means: observe instructions for use. It indicates points which
particularly need to be observed when using the equipment.
The quality assurance system used throughout EnviteC-Wismar GmbH
corresponds to the standards DIN EN ISO 9001 and EN 46001.
There are no warranty claims for damages caused by the use of unsuitable
foreign equipment and materials.
Defective equipment and empty batteries or storage batteries should not be
placed in domestic waste and should be disposed of in accordance with the
relevant national or local regulations.
The equipment is not authorised for use in explosive areas.
1.2. Safety instructions for oxygen sensor
-Do not mechanically damage the sensor. Do not use damaged
products. Only use for the purposes for which it is intended.
Possible Hazards
Hazards for humans and the environment:
Lead/lead compounds: poisonous if swallowed, dust inhalation or skin
resorption, protective measures in accordance with TRGS 505 (6/88).
Potassium hydroxide solution: hazardous materials regulations
(GefStoffV) "corrosive". Skin or eye contact causes burns.
-Do not use liquid disinfectant
-Remove impurities with a damp disposable cloth.
-Sterilisation with ethylene oxide at maximum 50°C.
-Can be disinfected at 45°C in an aseptor.

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Instructions for the disposal of the oxygen sensor
Product
-Recommendation: dispose of in accordance with regulations through
incineration in a hazardous waste incineration plant. Local authority
regulations must be complied with.
-Do not dispose of in household waste.
-EAK-key 160202 and 160606
Regulations
To be labelled "Corrosive", according to GefStoffV, for KOH solution component

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2. Introduction
Area of application
The OxiQuant B-oxygen meter is used to determine oxygen concentrations in gas
mixtures. It can be used to monitor gas supply equipment in industry and hospitals or
to check breathing mixtures in diving systems (nitrox and trimix mixtures).
Its compact dimensions, low weight, easy handling and calibration make the device
particularly suitable for mobile application.
The OxiQuant B is not designed for personal protection or for monitoring medical
breathing air in direct contact with patients. It must not be used for the preparation of
gas mixtures, but only to monitor them.
OxiQuant B uses an ENVITECoxygen sensor, type OOI101-1. This has a rapid
response time, high reliability and stable performance.

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LCD display
The
display directly shows the oxygen
concentration between 0-100% O2
Calibration buttons
By holding down the buttons "21%" or
"100%" (for a
pprox. 3 sec.) the device
is calibrated to air or 100% oxygen. -
>
see also Chapter 4 / Calibration
Keypad
ON/OFF button
Hold down the ON/OFF button for 2
seconds to switch the OxiQuant B on.
To switch off, hold the button down for
approx. 2 seconds.
3. Controls and symbols
If the battery indicator (BAT) appears continuously, the battery should be replaced, as it
will not supply the necessary voltage for much longer. When the indicator flashes, the
battery is empty. If, when the device is switched on, the battery indicator only flashes
briefly before the device immediately switches itself off, the battery is entirely discharged
and the device can no longer be used (-> Replace battery!).

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4. Start-up
Connecting the oxygen sensor
Connect the sensor (2) to the jack plug on the device cable and fix with the connecting
nut on the jack plug
Switch on the OxiQuant B and check whether a measurement value is displayed
After successful calibration, the device is ready to take measurements (-> see point 5/
Calibration and measurement accuracy)
To adapt it to a gas supply system, the sensor (1) is connected to the flow diverter (3)
and inserted into the T-piece (4) (optionally available).
1
2
3
4

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5. Calibration and measurement accuracy
5.1. Calibration using ambient air
1. Switch on the OxiQuant B
2. Hold the sensor away from the body.
3. By holding down the calibration button "21%" for approx. 3
seconds, the device is automatically calibrated to ambient air.
The indicators "CAL" and "21" will appear alternately on the
display for approx. 5 seconds.
The concentration of oxygen in ambient air is 20.95 %O2.The
calibration value is therefore set to 20.9% O
2. Ambient
pressure, humidity and temperature can have an effect on
the displayed value (see Chapter 6).
4. ?The device is ready to take measurements!
5.2. Calibration to 100% O2
At high oxygen concentrations (50-100% O
2), it is recommended that the
calibration be performed using a calibration gas consisting of 100% O2. In this
case, it must be ensured that the connection between the oxygen sensor and the
inlet when supplying gas to the sensor is tight enough to prevent any possibility
of ambient gases entering the mixture.
1. Connect the T-piece to the oxygen supply and insert the sensor
with the flow diverter into the T-piece.
2. Adjust the oxygen flow to the recommended 2 l/min at the
oxygen supply.
3. By holding down the calibration button "100%" for approx. 3
seconds, the device is automatically calibrated to pure oxygen.
The indicators "CAL" and "100" will appear alternately on the
display for approx. 5 seconds.
4. Remove the sensor from the supply and check, using clean
ambient air, that a value of 21% O2is displayed after approx. 60
seconds.
Hold the sensor away from the body when doing this (away from
breath!) and wave it around (unscrew the flow diverter if
necessary).
5. ?The device is ready to take measurements!
The relevant calibration process should be checked and, if
necessary, repeated before each new measurement!
If the calibration cannot be carried out correctly, see Chapter 5 /
Errors during calibration and measurement, or contact your dealer.

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5.3. Errors during calibration and measurement
?Measurement fluctuates by more than 1 Vol. % O2
?The sensor should be in thermal equilibrium with the environment
?Note sensor response time (see socket label)
?The sensor opening should be clean and dry
?Gases mixed with ambient air during calibration
?Internal electrical fault in device ?inform your dealer!
? ? The device does not display the expected measurement
?Calculation of the gas mixture is faulty
?Manometer is faulty
?Device is not calibrated
?Sensor not in thermal equilibrium with the environment
?Sampled gas mixed with ambient gas
?Device shows "ERR" for approx. 6 seconds after being switched on
?Device must be returned to dealer to be checked!
? ?Display goes out soon after switching the device on or does not come on at all
?Battery is discharged ?Replace battery!
The oxygen sensor wears out during its service life even when the device
is switched off.The sensor must be replaced if it is not possible to achieve
either 20.9% O2 or 100% O2 during calibration or if the measurement is not
plausible after checking the possible causes of error described above.
5.4. Influencing factors
Influence of gas pressure and measured gas humidity
The oxygen sensor measures the partial pressure of oxygen in the gas being
measured, but the device displays the concentration of oxygen and must
therefore be calibrated.
The calibration process equates the partial pressure of oxygen in dry ambient air
to a volume concentration of 20.9%O2. Depending on the absolute humidity of
the gas being measured, the proportion of oxygen (partial oxygen pressure) in
the gas fluctuates slightly. The effect of humidity can be ignored as the difference
between absolutely dry and saturated gas is less than 1% O2over the entire
working temperature range.

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Calibration should generally be implemented at the measurement pressure
to compensate for the effect of pressure differences.
The measurement pressure conditions are that of the gas being measured or the
current atmospheric pressure, which must take into account the height above sea
level of the measuring location.
Ambient temperature
The influence of changes in the ambient temperature is compensated for by the
measurement system.
However it should be kept in mind that the meter with the oxygen sensor should
be adapted to the ambient temperature. Large short-term fluctuations in the gas
temperature can considerably influence the accuracy of the display.
Water
Try to avoid getting the sensor or jack plug completely wet. Water on the gas-
sensitive surface of the oxygen sensor affects the measured result. If the device
does get wet, it can be dried on the outside with a cloth. It is recommended that
the device is not switched on until the sensor is dry.

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6. EnviteC oxygen sensor
6.1. Function principle
The function of the oxygen sensor can be simply described as follows:
1. The measured gas diffuses through a synthetic membrane and dissolves
in the oxygen sensor electrolyte.
2. The electrolyte contains 2 electrodes which are connected together by
an external resistor network.
3. The proportion of dissolved oxygen is reduced at the working electrode
(cathode). Oxidation takes place in a complementary reaction at the
second electrode (anode).
4. The resulting internal ion current drives an external electrical current
proportional to the conversion of oxygen.
5. The diffusion of gas molecules is a temperature-dependent process. To
compensate for this dependency, the current is converted into a
temperature-compensated voltage by means of a thermistor resistance
network.
6.2. Sensor service life
The OxiQuant B consists of a meter and an oxygen sensor. Because the
batteries and the oxygen sensor wear out during use, the battery and/or the
sensor should be replaced if the supply voltage or the measured signal display
no longer functions. The battery and the sensor are designed so that an average
service life of approx. 2 years is provided in normal use.
The following ageing influences must be noted:
The oxygen sensor ages independently of the length of time for which the device
is switched on, dependent on temperature and the partial oxygen pressure on the
sensor’s gas-sensitive surface.
?? The minimum service life of the oxygen sensor is based on 1
oxygen percent x hours, i.e. 500,000 %O2h. The sensor
therefore wears out after 2 ½ years of use in ambient air or less
if it is stored or used at higher partial oxygen pressures.
?? Temperature accelerates the rate of reaction of the oxygen
sensor, and therefore has an effect on its ageing. The simplified
relationship that applies here is that the higher the temperature,
the shorter the expected service life.
?? Very dry ambient conditions also have a negative effect on the
service life of the oxygen sensor, as they accelerate the
evaporation of the electrolyte.

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For these reasons, avoid storing the OxiQuant B unnecessarily at high
ambient temperatures, in very dry environments or under increased partial
oxygen pressures.
6.3. Changing the sensor
?? Undo the connecting nut on the sensor and remove the jack plug
?? Dispose of the sensor
?? Connect new sensor and check function
6.4. Packaging and storage
During storage, the sensor consumes the oxygen from the space inside
the gas inlet opening. Ageing is therefore reduced if the sensor is stored
in the original packaging. However, before it is ready to operate, the
sensor requires some time after it has been removed from the packaging,
depending on the storage period and temperature, before its
measurement value becomes stable. This time can be up to 30 minutes.
Meter calibration should therefore be carried out after the sensor has
stabilised or should be repeated at that stage. A storage temperature
between 5 and 15°C is recommended to reduce the necessary
stabilisation time.
Storage:
-Temperature range -20°C to 50°C / store in original packaging.
Labelling:
Item description: oxygen sensor
Application: determination of oxygen concentrations
Type: OOIXXX, XXX –consecutive type number
Manufacturer/supplier details:
Manufacturer: ENVITEC-Wismar GmbH, Alter Holzhafen 18, D-23966
Wismar, Germany
Telephone / Fax: [phone]
Sensor contains electrolyte and lead!

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7. Cleaning
Surface of device
Switch off the OxiQuant B.
Clean the device with a damp cloth only; on no account allow liquid to penetrate the
device.
Most common detergents and disinfectants are suitable.
Caution
Damage to device -phenol-based disinfectants and peroxide compounds
should not be used for surface disinfection.
Danger
Risk of electric shock, damage to device –if liquid penetrates the device it
should not be put into operation again until it has been checked by the
service department.
8. Accessories
Item P/N
OxiQuant B 46-00-0023
O2sensor OOI101-1 01-00-0073
Flow diverter 01-002171
T-piece 46-006005
Hose adaptor 46-000087
Defective equipment and empty batteries or storage batteries should not be
placed in domestic waste and should be disposed of in accordance with
the national or local regulations.

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9. Specifications and characteristics
All specifications apply to standard conditions:
1013 hPa, 25°C dry ambient air
Measuring range: 0-100% oxygen
Display resolution: 0.1% oxygen
Accuracy: < 1% vol.O2, when calibrated at 100% vol.O2
Offset: < 1% vol. O2in 100% N2
Response time: < 3.5 sec. to 90% of final value
Linearity error: < 3% relative
Drift: < 1% vol. O2 over 8 hours
Cross-sensitivity: < 0.1% vol. O2 in reaction to:
15% CO2 equilibrium N2
10% CO equilibrium N2
Effect of humidity: 0.03% relative per % RH
Effect of pressure: Proportional to change in oxygen partial pressure
Sensitivity to impact: < 1% relative after drop from 1 m
Operating temperature: 0°C –50°C
Temperature compensation: integrated NTC compensation
Operating humidity: 0 -99% rel. humidity
Storage termperature: -20°C –50°C
Recommended storage: 5°C –15°C
Battery type: 9V Block
Protection class: IP 64
Guarantee:
24 months from date of manufacture on monitor
(excluding battery)
15 months from date of manufacture for oxygen
sensor

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10. Declaration of Conformity
EC Declaration of Conformity
We declare under our sole responsibility that the product:
OxiQuant B
Complies with the requirements of the following guidelines:
DIN EN 61010 –1 Safety regulations for electrical meters, control units and
laboratory apparatus
Part 1: General requirements
DIN EN 55011 Limit values and measurement procedures for radio interference
from industrial, scientific and medical high frequency devices
(ISM devices)
Class B/08.2003
DIN EN 61000-6-2 Electromagnetic compatibility (EMC) –Part 6-2:
Basic standards –Interference resistance –Industry sector
08.2002
DIN EN 50104 Electrical equipment for detecting and measuring oxygen
Requirements for operating performance and test methods
A1
CE label affixed:
Issuer: EnviteC –WISMAR GMBH
Alter Holzhafen 18
D-23966 Wismar
Germany
Location, date: Wismar, 18.05.2004
Legally binding signature: ……………………..

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EnviteC-Wismar GmbH
Alter Holzhafen 18
23966 Wismar, Germany
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Web : http://www.envitec.com