Chauvin Arnoux C.A 1227 User manual

Thermo-anemometer
GB - User’s manual
C.A 1227

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Information or useful tip.
Battery.
Magnet.
The product is declared recyclable following an analysis of the life cycle in accordance with standard ISO 14040.
Chauvin Arnoux has adopted an Eco-Design approach in order to design this appliance. Analysis of the complete life-
cycle has enabled us to control and optimize the effects of the product on the environment. In particular this appliance
exceeds regulation requirements with respect to recycling and reuse.
The CE marking indicates conformity with European directives, in particular LVD and EMC.
The rubbish bin with a line through it indicates that, in the European Union, the product must undergo selective disposal
in compliance with Directive WEEE 2002/96/EC. This equipment must not be treated as household waste.
PRECAUTIONS FOR USE
This instrument is compliant with safety standard IEC 61010-2-030, for voltages up to 5V with respect to ground. Failure to observe
the safety instructions may result in electric shock, re, explosion, and destruction of the instrument and of the installations.
The operator and/or the responsible authority must carefully read and clearly understand the various precautions to be taken in
use. Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument.
Observe the conditions of use, namely the temperature, the relative humidity, the altitude, the degree of pollution, and the place
of use.
Do not use the instrument if it seems to be damaged, incomplete, or poorly close.
Before each use, check the condition of the housing. Any item of which the insulation is deteriorated (even partially) must be set
aside for repair or scrapping.
Always hold the handle of the sensor, and keep your ngers away from the propeller.
All troubleshooting and metrological checks must be done by competent, accredited personnel.
Thank you for purchasing this C.A 1227 thermo-anemometer.
For best results from your instrument:
read these operating instructions carefully,
comply with the precautions for use.

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CONTENTS
1. FIRST USE................................................................................................................................................................................ 4
1.1. Delivery condition ........................................................................................................................................................... 4
1.2. Accessories .................................................................................................................................................................... 4
1.3. Spare parts ..................................................................................................................................................................... 4
1.4. Inserting the batteries ..................................................................................................................................................... 5
2. PRESENTATION OF THE INSTRUMENT ................................................................................................................................ 6
2.1. C.A 1227......................................................................................................................................................................... 6
2.2. Functions of the instrument ............................................................................................................................................ 7
2.3. Function keys ................................................................................................................................................................. 7
2.4. On/Off key ...................................................................................................................................................................... 8
2.5. Display............................................................................................................................................................................ 8
3. USE IN STAND-ALONE MODE................................................................................................................................................ 9
3.1. Air temperature and speed measurement ...................................................................................................................... 9
3.2. Temperature and air ow measurement ....................................................................................................................... 10
3.3. Other functions ..............................................................................................................................................................11
3.4. Recording the measurements ...................................................................................................................................... 12
3.5. Errors............................................................................................................................................................................ 12
4. USE IN RECORDING MODE.................................................................................................................................................. 13
4.1. Connection ................................................................................................................................................................... 13
4.2. Get data logger transfer software ................................................................................................................................. 13
4.3. USB link........................................................................................................................................................................ 13
4.4. Bluetooth link ................................................................................................................................................................ 14
4.5. Data Logger Transfer software ..................................................................................................................................... 14
5. TECHNICAL CHARACTERISTICS ........................................................................................................................................ 17
5.1. Reference conditions.................................................................................................................................................... 17
5.2. Electrical characteristics ............................................................................................................................................... 17
5.3. Memory......................................................................................................................................................................... 18
5.4. USB .............................................................................................................................................................................. 18
5.5. Bluetooth ...................................................................................................................................................................... 18
5.6. Power supply ................................................................................................................................................................ 18
5.7. Environmental conditions ............................................................................................................................................. 19
5.8. Mechanical characteristics ........................................................................................................................................... 19
5.9. Compliance with international standards...................................................................................................................... 19
5.10. Electromagnetic compatibility (CEM).......................................................................................................................... 19
6. MAINTENANCE...................................................................................................................................................................... 20
6.1. Cleaning ....................................................................................................................................................................... 20
6.2. Replacement of batteries.............................................................................................................................................. 20
6.3. Updating the embedded software................................................................................................................................. 20
7. WARRANTY ........................................................................................................................................................................... 22

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1. FIRST USE
1.1. DELIVERY CONDITION
Thermo-anemometer C.A 1227
Supplied in a cardboard box with:
three AA or LR6 alkaline batteries,
one USB-micro USB cord,
one multilingual getting started guide,
one multilingual safety data sheet,
one test report,
one carrying case.
1.2. ACCESSORIES
Multi-purpose attachment accessory
Carrying bag.
USB-Bluetooth adapter
USB-mains adapter with USB-micro USB cord.
Protecting sheath
DataView application software
Air ow measurement cones kit containing:
one cone with round opening
one cone with square opening
1.3. SPARE PARTS
USB-micro USB cord
Thermo-anemometer sensor
For the accessories and spares, consult our web site:
www.chauvin-arnoux.com

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1.4. INSERTING THE BATTERIES
Notches to hang up the instrument.
Non-skid pads
Magnet for attachment to a metallic surface.
Battery compartment cover.
Press the tab of the battery compartment cover and lift it clear.
Withdraw the battery compartment cover.
Insert the new batteries, paying attention to the polarity.
Close the battery compartment cover; make sure that it is completely
and correctly closed.

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HOLD
MEM
REC
AIR UNIT
SET
°C / °F
MAP
MAX
AVG
MIN
THERMO-ANEMOMETER
C.A 1227
2. PRESENTATION OF THE INSTRUMENT
2.1. C.A 1227
Keypad with 5 keys.
On/Off key.
Type B micro-USB connector.
Backlit LCD display unit.
Propeller of the anemometer.
Handle of the sensor.
Spiral-wound cable connecting the
sensor to the instrument.
Temperature sensor.
Four-conductor 3.5mm jack.
Arrow indicating the direction of ow.

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2.2. FUNCTIONS OF THE INSTRUMENT
The C.A 1227 is a thermo-anemometer. It is used to measure:
temperatures from -20 to +50°C,
air speeds from 0.25 to 35m/s,
volume ows from 0 to 99.999m3/h.
This instrument is easy to use. It can display:
temperature measurements in °C or in °F,
air speeds in m/s and km/h or in fpm and mph,
volume ows in m3/s, m3/h, l/s, or CFM,
to record a minimum, an average (mean), and a maximum in a specied period,
to record a minimum, an average (mean), and a maximum on a surface,
to record the measurements,
to communicate with a PC via a Bluetooth link or a USB cable.
The Data Logger Transfer software can be installed on a PC and is used to congure the instruments and to recover the recorded
measurements.
2.3. FUNCTION KEYS
Key Function
°C/°F
MAP
A short press on the °C/°F key toggles the unit in which the temperature is displayed between °C and °F.
A long press on the MAP key opens the MAP mode.
MEM
REC
A short press on the MEM key records the measurement and the date.
In MAP mode, pressing the MEM key adds a measurement to the measurements of the MAP.
A long press on the REC key starts or stops a recording session.
SET
A short press on the key switches on the back-lighting.
A sustained press on the SET key makes it possible:
by pressing the key, to choose among using the anemometer to measure the speed of the air
(VELOC) or the air ow (FLOW), either with an air ow measurement cone, oriented for an incoming ow
(In) or an outgoing ow (out), or without a cone, after measuring the area (CUSt).
by pressing the AIR UNIT key, to choose the unit of display of the air speed (M/S, F/M, KM/H, M/H) or
air ow (M3/S, M3/H, L/S, CF/M).
HOLD A short press on the HOLD key freezes the display.
A long press on the key activates or deactivates the Bluetooth link.
MAX
AVG
MIN
A short press on the MAX AVG MIN key opens the MAX AVG MIN mode; the current values continue to be
displayed.
A second press displays the maximum value.
A third press displays the average (mean) value.
A fourth press displays the minimum value.
A fth press results in a return to the rst-press condition and display of the current values
A long press is used to exit from the MAX AVG MIN mode.
In the MAP mode, presses on the MAX AVG MIN key display in turn the maximum, average (mean), and
minimum of the MAP measurements.

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2.4. ON/OFF KEY
A long press on the key switches the instrument on.
A second long press on the key switches the instrument off when it is on.
However, it is not possible to switch the instrument off when it is in record mode and is recording.
MAX
AVG
MIN
SET
MAP
REC
MEMMEM FULL HOLD
P
MIN/AVG/MAX
TIME
MAP
Air speed and ow display unit.
Temperature display unit/MAP function counter.
When the measurement exceeds the limits, the instrument displays OL.
P
: indicates that auto-off is disabled and the instrument is in permanent mode.
This occurs when:
the instrument is recording, in MAX AVG MIN mode, in MAP mode, or in HOLD;
the instrument is connected via the USB cord either to an external power supply or for communication with a PC;
the instrument is in communication via Bluetooth;
or auto-off is disabled (see §4.5.3).
REC
If during start-up the instrument displays the screen shown opposite, it means that a
recording session has been brutally interrupted by a power outage.
During the display of this screen, the instrument recovers the recorded data. The longer
the record, the longer the recovery. Do not interrupt the recovery or the data will be lost.
2.5. DISPLAY

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3. USE IN STAND-ALONE MODE
The instrument can operate in two modes:
the stand-alone mode described in this section,
the record mode, in which it is controlled by a PC. This mode is described in the next section.
3.1. AIR TEMPERATURE AND SPEED MEASUREMENT
Connect the sensor to the instrument.
Long-press the key to switch the instrument on.
The instrument displays the time, then the measurement. The time is set using the Data Logger Transfer software (see §4).
To display the measurements in °F, press the °C/°F key.
Set the instrument to air speed measurement:
Press and hold the SET key.
Press the key until the instrument displays VELOC (velocity).
Press the AIR UNIT key to choose the unit of display of the air speed:
M/S: m/s or meter per second
F/M: fpm or feet per minute
KM/H: km/h or kilometre per hour
M/H: mph or miles per hour
Release the SET key.
The instrument will remain in this conguration when next started up.
Place the sensor in the air ow. The arrow on the inside of the propeller must point in the direction of the ow. In this congu-
ration, the temperature sensor will face the incoming air and will reach the nal value more rapidly.
Wait for the display to stabilize before reading the measurement.
Always hold the handle of the sensor, and keep your ngers away
from the propeller.

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3.2. TEMPERATURE AND AIR FLOW MEASUREMENT
Place the air ow measurement cone on the sensor. The air ow cones are sold as optional accessories. One has a round
opening 20cm diameter and the other a square opening measuring approximately 33cm on a side (see §1.2). Depending on
the measurement you want to make, place the sensor with the arrow pointing towards the cone (outgoing ow) or away from
it (incoming ow).
It is also possible to make air ow measurements without a cone.
Connect the sensor to the instrument.
Long-press the key to switch the instrument on.
The instrument displays the time, then the measurement. The time is set using the Data Logger Transfer software (see §4).
To display the measurements in °F, press the °C/°F key.
Set the instrument to air ow measurement:
Press and hold the SET key.
Press the key until the instrument displays FLOW (air ow), then choose In, out, or CUSt:
In for an incoming ow measurement with a cone (blowing),
out for an outgoing ow measurement with a cone (suction),
CUSt for use without a cone. It is in this case necessary to enter the area of the ventilation register using the Data
Logger Transfer software (see §4.5.5). The instrument will calculate the product of the area of the ventilation register
times the measured air speed in order to display the air ow across the whole surface.
Press the AIR UNIT key to choose the unit of display of the air ow:
M3/S: m3/s or cubic meters per second
M3/H: m3/h or cubic meters per hour
L/S: l/s or litres per second
CF/M: CFM or CFPM or cubic feet per minute
Release the SET key.
The instrument will remain in this conguration when next started up.
Place the cone on the ventilation register. The arrow inside the propeller must point in the direction of air ow: towards the
outside of the cone for a blowing measurement, towards the inside of the cone for a suction measurement.
Sensor.
When handling the sensor, keep your ngers away from the propeller.
Wait for the display to stabilize before reading the measurement.
Ventilation register.
Cone.
Handle of the cone.
Direction of air ow.
(here incoming)

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To exit from the MAX AVG MIN mode, long-press the MAX AVG MIN key.
3.3.3. MAP FUNCTION
The MAP function is used to create a map of the air speed or ow.
A sustained press on the MAP key activates the function. The counter of the number of points recorded reads zero.
Plot a map of the zone to be measured and mark the measurement points.
  

MAX
AVG
MIN
MAX
AVG
MIN
MAX
AVG
MIN
MAX
AVG
MIN

MAX
AVG
MIN
MIN/AVG/MAX
TIME
MAX
MIN/AVG/MAX
TIME
MIN
MIN/AVG/MAX
TIME
AVG
MIN/AVG/MAX
TIME
PPP
P
= measurement points.
3.3. OTHER FUNCTIONS
3.3.1. HOLD FUNCTION
Pressing the HOLD key freezes the display. A second press unfreezes it.
3.3.2. MAX AVG MIN FUNCTION
The MAX AVG MIN function is used to monitor the evolution of the measurements over time.
Pressing the MAX AVG MIN key activates the function and starts recording of the extrema and calculation of the mean.
Press the MAX AVG MIN key a second time and the instrument displays the maximum. Press it a third time and the instrument
displays the mean. A fourth time and the instrument displays the minimum. A fth time and it returns to the current value.

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Place the sensor on the rst measurement point and press the MEM key to record the value in memory. The counter is incremented.
Proceed in the same way for all the other points of the map.
MAP
P
MAP
MIN/AVG/MAX
MAP
P

MEM
REC
When all of the points have been entered, you can look up the maximum, the mean, and the minimum of the values entered. To
do this, press the MAX AVG MIN key 3 times.
To exit from the MAP mode, long-press the MAP key.
For each map measurement, a le is created with all of the measurement points. This le can then be recovered for analysis.
3.4. RECORDING THE MEASUREMENTS
A short press on the MEM key records the measurement and the date.
A long press on the REC key starts or stops a recording session.
To see the records, you must use a PC and install the Data Logger Transfer software (see §4).
3.5. ERRORS
The instrument detects errors and displays them in the form Er.XX. The main errors are the following:
Er.01: Hardware malfunction detected. The instrument must be sent in for repair.
Er.02: Error in internal memory. Format it using Windows.
Er.03: Hardware malfunction detected. The instrument must be sent in for repair.
Er.10: The instrument has not been adjusted or is not correctly adjusted. The instrument must be sent back to customer service.
Er.11: The update of the internal software is not compatible with the instrument (the software is that of another instrument of the
line). Install the correct internal software in your instrument.
Er.12: The update of the internal software is not compatible with the electronic boards in the instrument. Reload the previous
internal software into your instrument.
Er.13: Recording scheduling error. Check that the instrument’s time and the time of the Data Logger Transfer software are the same.

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4. USE IN RECORDING MODE
The instrument can operate in two modes:
the stand-alone mode described in the previous section,
the record mode, in which it is controlled by a PC. This mode is described below.
4.1. CONNECTION
The device has 2 communication modes:
A USB link via a USB-micro USB cord,
A Bluetooth 4.0 BLE wireless link.
4.2. GET DATA LOGGER TRANSFER SOFTWARE
Visit our web site to download the latest version of the application software:
www.chauvin-arnoux.com
Go to the Support tab, then Download our software. Then search on the name of your instrument.
Download the software, then install it on your PC.
You must have administrator privileges on your PC to install the Data Logger Transfer software.
Minimum computer requirements:
Windows 7 (32/64 bits)
2 GB of RAM
200 MB of disc space
Windows®is a registered trade mark of Microsoft®.
4.3. USB LINK
Long-press the key to switch the instrument on.
Once the Data Logger Transfer software has been installed, connect the instrument to the PC.
It is treated as a USB key and you can access its content. But to read the records, you must use the Data Logger Transfer software.

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4.4. BLUETOOTH LINK
The instrument has a low-energy Bluetooth 4.0 link that requires no pairing.
Activate Bluetooth on your PC. If your PC does not have a Bluetooth link, you can add a board or Bluetooth adapter connected
to a USB port (see §1.2).
Since Windows 7 does not manage low-energy Bluetooth, a specic USB/Bluetooth adapter must be used (see §1.2).
Switch the instrument on by a long press on the key, then activate the Bluetooth link by a long press on the key. The
symbol is displayed.
The instrument is then ready to communicate with the PC.
4.5. DATA LOGGER TRANSFER SOFTWARE
Once the instrument has been connected to the PC, whether by USB or by Bluetooth, open the Data Logger Transfer software.
For context-sensitive information about the use of the Data Logger Transfer software, refer to the Help menu.
4.5.1. CONNECTING THE INSTRUMENT
To connect an instrument, click Add an instrument, then choose the type of connection (USB or Bluetooth).
A window opens with a list of all instruments connected to the PC.
The name of the instrument will be formed from the model of the instrument and the warranty number: C.A 1227 - 123456ABC
You can personalize your instrument by adding a name and a location, by clicking on or .
Choose your instrument in the list. The software then displays complete information about the instrument and its measurements
in progress.

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4.5.2. DATE AND HOUR
The Instrument menu lets you set the your instrument’s date and time.
These cannot be changed while recording or when a recording session has been scheduled.
By clicking , you can choose the date and time display formats.
4.5.3. AUTO OFF
As default, the instrument switches itself off automatically after 3 minutes of operation without the user’s presence being conrmed
by a key-press. By clicking , you can change this value to 3, 10, or 15 minutes.
It is also possible to disable this auto-off function; the instrument then displays the
P
symbol.
4.5.4. PROGRAMMED RECORDING SESSIONS
By clicking , you can program a recording session. Assign a name to the recording session. Then enter a starting date and time
and an ending date and time or a duration. The maximum duration of a recording session depends on the memory available.
Choose a sampling period. The possible values are: 1 s, 2 s, 5 s, 10 s, 20 s, 30 s, 1 min, 2 min, 5 min, 10 min, 15 min, 30 min and
1 hour. The shorter the sampling period, the larger the recorded le.
Before and after the recording session, if the instrument is switched on, the sampling period will be that of the stand-alone mode (1s).
If the instrument is off when recording starts, it switches itself on by itself. Then it displays the measurement, which it refreshes at
each sampling period.
Before starting a recording session, make sure that the battery life is sufcient, or else connect the instrument to an external
power supply on/to a wall outlet using a micro USB cord.

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4.5.5. CONFIGURING THE AIR FLOW MEASUREMENT
By clicking , then opening the Thermo-anemometer tab, you can modify the units in which the measurements are displayed
in the same way as by pressing the °C/°F or the SET key. You can also choose the direction of ow for an air ow measurement
with a cone, or enter the area of the ventilation register without a cone.
You can choose among three possibilities:
In for an incoming ow measurement with a cone (blowing),
out for an outgoing ow measurement with a cone (suction),
CUSt for use without a cone. Enter the area of the ventilation register.
4.5.6. READING THE RECORDS
The Data Logger Transfer software lets you read the records made. Click Recorded Sessions under the name of your instrument
to obtain a list of the records.
4.5.7. EXPORTING RECORDS
Once the list of the records is displayed, choose the one you want to export and convert it into a word-processing document (docx)
or a spreadsheet (xlsx), in order to be able to use it in the form of reports or curves.
It is also possible to export the data to the DataView application software (see §1.2).
4.5.8. REAL-TIME MODE
Click Real-time data under the name of your instrument to see the measurements being made on the instrument as they are made.
4.5.9. FORMATTING THE MEMORY OF THE INSTRUMENT
The internal memory of the instrument is already formatted. But if there is a problem (if it becomes impossible to read or to write),
it may be necessary to reformat it (in Windows).
In this case, all of the data will be lost.

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5. TECHNICAL CHARACTERISTICS
5.1. REFERENCE CONDITIONS
Quantity of inuence Reference values
Temperature 23 ± 2°C
Relative humidity 45% to 75%
Supply voltage 3 to 4.5V
Electric eld < 1V/m
Magnetic eld < 40A/m
The intrinsic uncertainty is the error specied for the reference conditions.
It is expressed in the form: a %R + b pt, where R = reading.
5.2. ELECTRICAL CHARACTERISTICS
5.2.1. TEMPERATURE MEASUREMENTS
Specied measurement range - 20 to + 50°C -4 to + 122°F
Resolution Display in °C: 0.1°C Display in °F: 0.1°F
Intrinsic uncertainty from 0 to 50°C: ± 0,8°C
from -20 to 0°C: ± 1,6°C
5.2.2. AIR SPEED MEASUREMENTS
m/s km/h
Specied measurement range 0.25 to 2.99 m/s 3.0 to 35.0 m/s 0.90 to 2.99
km/h 3.0 to 99.9 km/h 100 to 126 km/h
Resolution 0.01 m/s 0.1 m/s 0.01 km/h 0.1 km/h 1 km/h
Intrinsic uncertainty ± 3 % R ± 4 pt ± 3 % R ± 1 pt
fpm mph
Specied measurement range 49.0 to 99.9 fpm 100 to 6,890 fpm 0.56 to 2.99 mph 3.0 to 78.3 mph
Resolution 0.1 fpm 1 fpm 0.01 mph 0.1 mph
5.2.3. AIR FLOW MEASUREMENTS
m3/s
Specified measure-
ment range
0.0000 to 0.9999
m3/s
0.100 to 0.999
m3/s 1.00 to 2.99 m3/s 3.0 to 99.9 m3/s 100 to 99999 m3/s
Resolution 0.0001 m3/s 0.001 m3/s 0.01 m3/s 0.1 m3/s 1 m3/s
Intrinsic uncertainty ± 8% R
m3/h R/s
Specified measure-
ment range 0.00 to 2.99 m3/h 3.0 to 99.9 m3/h 100 to 2999 m3/h 0.00 to 2.99 R/s
Resolution 0.01 m3/h 0.1 m3/h 1 m3/h 0.01 R/s
Intrinsic uncertainty ± 8% R ± 8% R

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Specied measurement range 0.00 to 2.99 cfm 3.0 to 99.9 cfm 100 to 2999 cfm
Resolution 0.01 cfm 0.1 cfm 1 cfm
Intrinsic uncertainty ± 8% R
5.3. MEMORY
The size of the ash memory containing the records is 4 MB.
This capacity is sufcient to record a million measurements. At each measurement, the temperature and the air speed or air ow
are recorded with the date, the time, and the unit.
5.4. USB
Protocol: USB Mass Storage
Maximum transmission speed: 12 Mbit/s
Type B micro-USB connector
5.5. BLUETOOTH
Bluetooth 4.0 BLE
Range 10m typical and up to 30m in line of sight.
Output power: +0 to -23 dBm
Nominal sensitivity: -93 dBm
Maximum transfer rate: 10 kbits/s
Average consumption: 3.3 µA to 3.3 V.
5.6. POWER SUPPLY
The instrument is supplied by three 1.5V LR6 or AA alkaline batteries. It is possible to replace the batteries by rechargeable NiMH
batteries of the same size. But the rechargeable batteries, even when correctly charged, will not reach the voltage of the alkaline
batteries and the life indicated will be or .
The voltage range ensuring correct operation is from 3 to 4.5V for the alkaline batteries and 3.6V for the rechargeable batteries.
Below 3V, the instrument stops making measurements and displays BAt.
Battery life (with the Bluetooth connection deactivated) is:
in stand-alone mode, 200h
in recording mode: 8 days at rate of one measurement every 15 minutes.
The instrument can also be powered via a USB-micro USB cord, connected either to a PC or to a wall outlet via a mains adapter.
> 110 VAC
< 240 VAC
50 / 60 Hz
2,5 W

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5.7. ENVIRONMENTAL CONDITIONS
For use indoors and outdoors.
Operating range -10 to 60°C and 10 to 90%RH without condensation
Storage range -20 to +70°C and 10 to 95%RH without condensation, without batteries
Altitude < 2000m, and 10,000m in storage.
Pollution degree 2
5.8. MECHANICAL CHARACTERISTICS
Dimensions (L x W x H)
Housing 150 x 72 x 32mm
Sensor 160 x 80 x 38mm
Spiral-wound cable 24 to 120cm
Mass 400g approx.
Inrush protection IP 40, with the USB connector closed, per IEC 60 529.
Drop impact test 1 m per IEC 61010-1.
5.9. COMPLIANCE WITH INTERNATIONAL STANDARDS
The instrument is compliant with standard IEC 61010-1.
5.10. ELECTROMAGNETIC COMPATIBILITY (CEM)
The instrument is compliant with standard IEC 61326-1.

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6. MAINTENANCE
Except for the batteries, the instrument contains no parts that can be replaced by personnel who have not been
specially trained and accredited. Any unauthorized repair or replacement of a part by an “equivalent” may grave-
ly impair safety.
6.1. CLEANING
To preserve good measurement quality, the propeller of the sensor must be kept perfectly clean.
Switch the instrument off.
Use a soft cloth, dampened with soapy water. Rinse with a damp cloth and dry rapidly with a dry cloth or forced air. Do not use
alcohol, solvents, or hydrocarbons.
See to it that nothing interferes with the rotation of the propeller.
6.2. REPLACEMENT OF BATTERIES
The symbol indicates the remaining battery life. When the symbol is empty, all of the batteries must be replaced.
Switch the instrument off.
Refer to §1.4 for the replacement procedure.
Spent batteries must not be treated as ordinary household waste. Take them to the appropriate recycling collection
point.
6.3. UPDATING THE EMBEDDED SOFTWARE
With a view to providing, at all times, the best possible service in terms of performance and technical improvements, Chauvin-
Arnoux offers you the possibility of updating the internal software of this instrument by downloading, free of charge, the new version
available on our web site.
See you on our site:
www.chauvin-arnoux.com
Then go to “Support”, then “Download our software”, then “C.A 1227”.
Updating the embedded software may reset the conguration and cause the loss of the recorded data. As a precaution,
save the data in memory to a PC before updating the embedded software.