Chauvin Arnoux C.A 1550 User manual

Micromanometer
EN - User’s manual
C.A 1550

2
WARNING, risk of DANGER! The operator must refer to these instructions whenever this danger symbol appears.
Information or useful tip.
Battery.
Magnet.
Earth.
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 e󰀨ects of the product on the environment. In particular this appliance
exceeds regulation requirements with respect to recycling and reuse.
The CE marking indicates compliance with the European Low Voltage Directive (2014/35/EU), Electromagnetic
Compatibility Directive (2014/30/EU) , Radio Equipment Directive (2014/53/EU), and Restriction of Hazardous
Substances Directive (RoHS, 2011/65/EU and 2015/863/EU).
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 2012/19/UE: This equipment must not be treated as household waste.
PRECAUTIONS OF USE
This instrument is compliant with safety standard IEC/EN 61010-2-030 or BS EN 61010-2-030, for voltages 5V with report 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.
Do not make measurements on bare live conductors. Use a non-contact sensor or a sensor that provides the necessary electrical
insulation.
Always wear personal protective equipment (PPE), in particular insulating gloves, if there is any doubt or it is impossible to measure
the voltage levels to which the temperature sensor is connected.
All troubleshooting and metrological checks must be done by competent, accredited personnel.
Thank you for purchasing this CA 1550 micromanometer.
For best results from your instrument:
read these operating instructions carefully,
comply with the precautions for use.

3
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 1550......................................................................................................................................................................... 6
2.2. Functions of the instrument ............................................................................................................................................ 6
2.3. Function keys ................................................................................................................................................................. 7
2.4. On/O󰀨 key ...................................................................................................................................................................... 8
2.5. Display............................................................................................................................................................................ 8
3. USE IN STAND-ALONE MODE ............................................................................................................................................. 9
3.1. Temperature and pressure measurement ...................................................................................................................... 9
3.2. Air temperature and speed measurement .................................................................................................................... 10
3.3. Temperature and air ow measurement ........................................................................................................................11
3.4. Temperature and atmospheric pressure measurement.................................................................................................11
3.5. Conguring the measurements .................................................................................................................................... 12
3.6. Other functions ............................................................................................................................................................. 13
3.7. Recording the measurements ...................................................................................................................................... 15
3.8. Errors............................................................................................................................................................................ 15
4. USE IN RECORDING MODE ............................................................................................................................................... 16
4.1. Connection ................................................................................................................................................................... 16
4.2. Obtain the Data Logger Transfer software ................................................................................................................... 16
4.3. USB link........................................................................................................................................................................ 16
4.4. Bluetooth link ................................................................................................................................................................ 17
4.5. Data Logger Transfer software ..................................................................................................................................... 17
4.6. CA Environmental Loggers application......................................................................................................................... 20
5. TECHNICAL CHARACTERISTICS ..................................................................................................................................... 21
5.1. Reference conditions.................................................................................................................................................... 21
5.2. Characteristics.............................................................................................................................................................. 21
5.3. Variation in the domain of use ...................................................................................................................................... 23
5.4. Memory......................................................................................................................................................................... 24
5.5. USB .............................................................................................................................................................................. 24
5.6. Bluetooth ...................................................................................................................................................................... 24
5.7. Power supply ................................................................................................................................................................ 24
5.8. Environmental conditions ............................................................................................................................................. 25
5.9. Mechanical characteristics ........................................................................................................................................... 25
5.10. Compliance with international standards.................................................................................................................... 25
5.11. Electromagnetic compatibility (CEM).......................................................................................................................... 25
6. MAINTENANCE..................................................................................................................................................................... 26
6.1. Cleaning ....................................................................................................................................................................... 26
6.2. Replacement of batteries.............................................................................................................................................. 26
6.3. Updating the embedded software................................................................................................................................. 26
7. WARRANTY........................................................................................................................................................................... 28

4
1. FIRST USE
1.1. DELIVERY CONDITION
Micro-manometer CA 1550
Supplied in a cardboard box with:
three AA or LR6 alkaline batteries,
two hoses,
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
Pitot tube
DataView application software
1.3. SPARE PARTS
USB-micro USB cord
Flexible hoses
For the accessories and spares, consult our web site:
www.chauvin-arnoux.com

5
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.

6
2. PRESENTATION OF THE INSTRUMENT
2.1. C.A 1550
Type B micro-USB connector.
On/O󰀨 key.
Thermocouple connector.
Backlit LCD display unit.
Di󰀨erential pressure measurement connector.
Keypad with 5 keys.
HOLD
MEM
REC SET
MAX
AVG
MIN
MAP
0
MICROMANOMETER
C.A 1550
2.2. FUNCTIONS OF THE INSTRUMENT
The CA 1550 is a micromanometer and thermometer. It is used to measure:
temperatures from -10 to +50°C,
di󰀨erential pressures up to ±2.450Pa,
atmospheric pressure from 500 to 1.100hPa,
air speeds up to 60m/s,
volume ow rates up to 9.999m3/h.

7
This instrument is easy to use. It can:
to display temperature measurements in °C or in °F,
display a di󰀨erential pressure in Pa, PSI, mbar, mmHg, inHg, mmH2O, or inH2O,
display the atmospheric pressure in Pa, PSI, or mbar,
display the air speed in m/s, km/h, fpm, or mph,
display a volume ow rate 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 (mode MAP see §3.6.3),
to record the measurements,
to communicate with a PC via a Bluetooth link or a USB cable,
communicate with a smartphone or a tablet via a Bluetooth link (Android application).
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
MAP
A short press on the key selects the measurement to be displayed: di󰀨erential pressure, air speed, volume
ow rate, or atmospheric pressure.
A long press on the MAP key is used to enter or exit from 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 turns the backlighting on for 30 seconds.
Pressing the SET and HOLD keys simultaneously zeros the di󰀨erential pressure (
0
).
A sustained press on the SET key is used to enter or exit from the conguration menu, in which you can:
choose the unit of temperature,
choose the unit of pressure,
choose the unit of air speed,
choose the unit of air ow,
choose the unit of area,
program the area for the air ow calculation,
program the coe󰀩cient of the Pitot tube,
set the temperature (manual mode).
Use the▲▼ keys to change the unit or reduce or increase the value, and the ◄► keys to switch from one pa-
rameter to another.
HOLD A short press on the HOLD key locks or unlocks 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.

8
2.4. ON/OFF KEY
A long press on key switches the instrument on.
A long press on key switches the instrument o󰀨.
It is not possible to switch the instrument o󰀨 when it is in record mode and is recording.
MAX
MAP
AUTO
MAN
ATM
MEM
REC
MEM FULL
HOLD
P
MIN/AVG/MAX
MAP
TIME
SET
MIN
AVG
Display unit for air pressure, speed, and ow.
Temperature display unit/MAP function counter.
When the measurement exceeds the limits, the instrument displays OL.
P
: indicates that auto-o󰀨 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-o󰀨 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

9
3. USE IN STAND-ALONE MODE
The instrument can operate in two modes:
the stand-alone mode described in this section,
in recorder mode, where it is controlled by a PC, a smartphone, or a tablet. This mode is described in the next section.
3.1. TEMPERATURE AND PRESSURE MEASUREMENT
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).
Place the instrument in its position of use and zero by pressing the SET and HOLD keys simultaneously (
0
).
To make a temperature measurement, connect a thermocouple (optional). The temperature measurement is then made automat-
ically (AUTO symbol displayed)
If you make a temperature measurement with another instrument, enter the temperature (see §3.5). You then switch to manual
mode (MAN symbol displayed).
To make a pressure measurement, connect the hoses provided to the di󰀨erential pressure connector of the instrument.
Wait for the display to stabilize before reading the measurement.
AUTO
HOLD
MEM
REC SET
MAX
AVG
MIN
MAP
0
MICROMANOMETER
C.A 1550

10
3.2. AIR TEMPERATURE AND SPEED MEASUREMENT
To make an air speed measurement, press the key. The unit changes to a unit of speed.
To make a temperature measurement, connect a thermocouple (optional). The temperature measurement is then made automat-
ically (AUTO symbol displayed)
If you make a temperature measurement with another instrument, enter the temperature (see §3.5). You then switch to manual
mode (MAN symbol displayed).
Connect the hoses provided to the di󰀨erential pressure connector of the instrument and, for example, to a Pitot tube.
To program the coe󰀩cient of the Pitot tube, refer to §3.5.
If the thermocouple is exible, wrap it around the Pitot probe.

MAP
AUTO
HOLD
MEM
REC SET
MAX
AVG
MIN
MAP
0
MICROMANOMETER
C.A 1550
Make sure that the sensors are connected with the
correct polarity.
Place the Pitot tube in the air ow to be measured.
Wait for the display to stabilize before reading the
measurement.
The air speed calculation is corrected for the measured atmospheric pressure and measured temperature.

11
3.3. TEMPERATURE AND AIR FLOW MEASUREMENT
To make an air ow measurement, press the key again. The unit changes to a unit of ow.
To program the area, refer to §3.5. In the calculation, it is assumed that the ow rate is homogeneous over the whole of the area.

MAP

MAP
AUTO
ATM
3.4. TEMPERATURE AND ATMOSPHERIC PRESSURE MEASUREMENT
To measure the atmospheric pressure, press the key again. The unit changes to a unit of atmospheric pressure.
The atmospheric pressure measurement probe is inside the instrument, so there is no need to connect the hoses.
A fourth press on the key returns the instrument to the measurement of di󰀨erential pressure.
Area of the air ow.
AUTO

12
3.5. CONFIGURING THE MEASUREMENTS
To choose the measurement units, to program values, or to set the temperature, long-press the SET key.
This opens the conguration menu.

> 2s
SET
SET
Use the ▲▼keys to choose the temperature unit:°C or °F.

HOLD

HOLD

HOLD

HOLD
SET
SET
SET
SET
Use the ▲▼keys to choose the di󰀨erential pressure unit:
Pa: Pascal,
PSI: pound per square inch,
daPa: decapascals,
hPa: hectopascal,
mbar: millibar,
mmHG: millimeters of mercury or Torr,
inHG: inches of mercury,
mmH2O: millimeters of water,
inH2O: inches of water.
The Pa, PSI, and mbar units are also used for the atmospheric
pressure.
Use the ▲▼keys to choose the air speed unit:
m/s: meters per second,
km/h: kilometers per hour,
fpm: feet per minute,
mph: miles per hour.
Use the ▲▼keys to choose the air ow unit:
m3/s: cubic meters per second,
m3/h: cubic meters per hour,
CFM: cubic feet per minute,
L/s: litres per second.
Use the ▲▼keys to choose the unit of area:
cm²: square centimeters,
in²: square inches.

13

HOLD

HOLD

HOLD

HOLD
SET
SET
SET
MAN
Use the ▲▼keys to set the area for the air ow calculation.
Hold the ▲ key (or the ▼key) down to increase (or decrease)
the value faster.
The area that can be programmed ranges from 1 to 9.990cm2or in².
There are 3 pre-programmed coe󰀩cients and one coe󰀩cient that
can be customized:
1.0015
1
0.84
CUST
Use the ▲▼keys to set the coe󰀩cient of the Pitot tube. To nd
this coe󰀩cient, refer to the documentation from the manufacturer
of the Pitot tube.
If you use a manual temperature measurement (MAN), set the
temperature using the ▲▼ keys.

> 2s
SET
Long-press the SET key to exit from the conguration menu.
3.6. OTHER FUNCTIONS
3.6.1. HOLD FUNCTION
AUTO
ATM
HOLD
P
Pressing the HOLD key freezes the display.
A second press unfreezes it.

14
3.6.2. 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.
To exit from the MAX AVG MIN mode, long-press the MAX AVG MIN key.
3.6.3. MAP FUNCTION
The MAP function is used to create a map of the air speed or ow.
A 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
1 2
4
3
5 6
7 8 9
= measurement points.
Place the sensor on the rst measurement point and press the MEM key to record the value in memory. The counter is incremented.
MAP
P
MAP
MIN/AVG/MAX
MAP
P

MEM
REC

15
Proceed in the same way for all the other points of the map.
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.
3.7. RECORDING THE MEASUREMENTS

MEM
REC

MEM
REC
> 2s
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 recordings, you must use a PC and install the Data Logger Transfer software, or use a smartphone or a tablet on which
the Android application has been installed (see §4).
3.8. ERRORS
The instrument detects errors and displays them in the form ErXX. The main errors are the following:
Er01: Hardware malfunction detected. The instrument must be sent in for repair.
Er02: Error in internal memory. Format it using Windows.
Er03: Hardware malfunction detected. The instrument must be sent in for repair.
Er10: The instrument has not been adjusted or is not correctly adjusted. The instrument must be sent back to customer service.
Er11: 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.
Er12: The update of the internal software is not compatible with the electronic boards in the instrument. Reload the previous internal
software into your instrument.
Er13: Recording scheduling error. Check that the instrument’s time and the time of the Data Logger Transfer software are the same.

16
4. USE IN RECORDING MODE
The instrument can operate in two modes:
the stand-alone mode described in the previous section.
recorder mode, where it is controlled by a PC, a smartphone, or a tablet; this mode is described below.
4.1. CONNECTION
The device has 2 communication modes:
A USB link via a USB-micro USB cord, for use with a PC and the Data Logger Transfer software,
A low-energy Bluetooth 4.0 wireless link, for use with a smartphone or a tablet and the CA Environmental Loggers application.
4.2. OBTAIN THE 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), Windows 10 is recommended
4 GB of RAM
200MB of free disc space
Windows®is a registered trade mark of Microsoft®.
Do not connect the instrument to the PC until you have installed the Data Logger Transfer software.
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.
AUTO
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.

17
4.4. BLUETOOTH LINK
The instrument has a low-energy Bluetooth 4.0 link.
Activate Bluetooth on your PC, your tablet, or your smartphone. 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, the smartphone, or the tablet.
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, Environmental, 1550, 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: CA 1550-123456ABC
Choose your instrument in the list. The instrument then displays complete information about the instrument and its measure-
ments in progress.
You can personalize your instrument by adding a name and a location, by clicking on or .
AUTO

AUTO

10:36

18
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 o󰀨 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-o󰀨 function; the instrument then displays the Psymbol.
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: 1s, 2s, 5s, 10s, 20s, 30s, 1min, 2min, 5min, 10min, 15min, 30min 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 o󰀨 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 su󰀩cient, or else connect the instrument to an external
power supply on/to a wall outlet using a micro USB cord.

19
4.5.5. CONFIGURING THE MEASUREMENTS
By clicking , then going to the Manometer tab, you can change the units in which the measurements are displayed, just as
you can by pressing the SET key. You can also enter the area for the air ow calculation, the coe󰀩cient of the Pitot tube, or the
temperature.
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.
Format the instrument in the le explorer,
Eject the instrument from the le explorer,
Disconnect the USB cord,
Switch the instrument o󰀨 and back on.

20
4.6. CA ENVIRONMENTAL LOGGERS APPLICATION
This Android application provides some of the functions of the Data Logger Transfer software.
It lets you connect to your instrument remotely.
Look for the application by typing Chauvin Arnoux.
Install the application on your smartphone or your tablet.
Activate Bluetooth on your smartphone or your tablet and on the CA 1550, then connect them.
The application lets you:
see the measurements in real time,
program a recording: choose its name, its starting and ending dates, and the sampling period,
congure the instrument (synchronise the date and time, and enter the area for the air ow calculation),
download the recordings.