Chauvin Arnoux C.A 870 User manual

1
C.A870
C.A872
■Thermomètre infrarouge
■Infrared thermometer
■Infrarot-Thermometer
■Termometro a infrarossi
■Termómetro infrarrojo
FRANÇAIS
ENGLISH
DEUTSCH
ITALIANO
ESPANOL
Notice de fonctionnement
User's manual
Bedienungsanleitung
Libretto d’Istruzioni
Manual de Instrucciones

8
Meaning of the
!
symbol
Warning ! Please refer to the User’s Manual before using
the instrument.In this User’s Manual, the instructions
preceded by the above symbol, should they not be carried
out as shown, can result in a physical accident or dammage
the instrument and the installations.
Significance of the LASER symbol
Laser radiation, do not look at the LASER beam.
LASER output < 0.5 mW
650 mm wavelength
Class II LASER, as per IEC 60825 standard (Ed. 1991)
Thank you for purchasing this C.A. 870 or C.A. 872
thermometer.
To get the best service from this instrument:
nread this user’s manual carefully,
nrespect the safety precautions detailed
!
PRECAUTIONS FOR USE
!
■Do not place the thermometer on or close to objects with
temperatures of > 65°C / 150°F)
■Ifthethermometerissubjectedtostrongambienttemperature
variations,wait 20 minutesafter stabilization beforeresuming
measurement.
■Do not expose the thermometer to strong electrical or
magnetic fields since they may cause measurement errors
(e.g. induction heating, arc welding kits, etc.).
■Do not direct the LASER beam of the C.A.872 towards your
eyes.
■Comply with the environmental conditions (see §5)
■Keep the lens perfectly clean
WARRANTY
Our guarantee is applicable for twelve months after the date
on which the equipment is made available (extract from our
General Conditions of Sale, available on request).
English

91
CONTENTS
1. PRESENTATION ................................................................9
2. OPERATION - EMISSIVITY...............................................9
3. DESCRIPTION .................................................................10
4. USE ..................................................................................10
5. SPECIFICATIONS ...........................................................11
6. MAINTENANCE .................................................................6
7. TO ORDER .......................................................................13
8. APPENDIX .......................................................................32
1.PRESENTATION
C.A 870 and C.A 872 infrared thermometers are temperature
measurement instruments that do not require contact.
The C.A. 872 allows greater measuring accuracy, thanks to its
LASER sight.
To measure the temperature of an object, simply point the probe
atthe surfaceofthe object and thetemperaturewill be displayed
on the digital display, the thermometer will switch off
automatically.
2. OPERATION - EMISSIVITY
All objects whose temperature is higher than absolute zero (-
273,15 K) emit infrared energy. This energy radiates in all
directions at the speed of light.
When you point the probe at an object, the probe’s lens senses
this energy and focuses it onto an infrared detector constituted
by a stack of thermocouples. This detector transmits a voltage
signal proportional to the amount of energy received, which
means that it is proportional to the object’s temperature.
Certain objects emit infrared energy but also reflect it. Unlike
matt surfaces, shiny or highly-polished surfaces tend to reflect
energy.This reflectionisrepresentedbyafactorcalled emissivity
which may vary from 0.1 for a highly reflective object to 1 for a
black object.
In the case of the C.A 870 and C.A. 872 thermometers, the
emissivity is preset at 0.95, the most frequent value, enabling
approximately 90% of applications to be covered.

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3. DESCRIPTION
See §8. Attachment (at the end of this user’s manual)
➀Measurement lens
➁LASER sight orifice (C.A. 872)
➂Backlit liquid crystal display
- Main display: ± numeric value of the temperature
in 3½digits or OL error code
- Symbols:
LASER in operation (C.A. 872)
Low battery
Value saved to memory
°C/°F Value of unit displayed
➃Switches the display backlighting off and on
➄Switches the LASER off / on (C.A.872)
➅Yellow on/off and measurement activation pushbutton
➆°C/°F conversion pushbutton
4. USE
Never direct the LASER beam towards your eyes.
4.1 Procedure
1. Give a short press on the yellow pushbutton ➅to switch the
instrument on
2. Configure the instrument with the following keys:
➃activates the display backlighting
➄activates/deactivates the LASER sight
3. Choose °C or °F as the measuring unit using ➆with ➅
pressed and held down
4. Point the thermometer towards the temperature
measurement target using the LASER sight (C.A 872) or
not, (see §4.2 and 4.3) and press on the yellow pushbutton
➅.
If the key is held down, the thermometer will constantly
measure any variations in temperature.
5. Release the yellow button, the symbol is displayed
toindicatethatthevaluedisplayed isthe lastvaluemeasured.
Note: The instrument switches itself off automatically after a
few seconds and keeps the last configuration of key ➆in
memory.
If the temperature measured is outside the measurement
range, the thermometer will display OL.
!

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4.2 Precautions for measurement
■If the surface to be measured is ≤Ø 50 mm, hold the probe
as close as possible to the surface (less than 50 cm away)
(see § 4.3)
■If the surface to be measured is covered in frost or other
particles, clean it so that the surface is clear before taking a
measurement.
■If the surface to be measured is highly reflective, stick matt
tape or apply matt paint to the surface before measuring.
■Ifthe thermometerappearsto be giving incorrectindications,
checkthe condition of thelens of the measuring orifice, since
it may be obscured by condensation or particles.If so, clean
it by carefully following the instructions in §6.3 Upkeep.
4.3 Ratio between distance from target / diameter
of measurement field
This ratio, also called the field of vision, indicates the diameter
of the measurement field at a given distance from the target,
D/Ø= 10/1 (see figure below).
The minimum measurement distance is 150mm - this
gives a measurement spot diameter of 15mm.
In the case of small measurement points, it is important to
bring the probe sufficiently close to the target to avoid including
other points in the measurement field.
5.SPECIFICATIONS
■■
■■
■Measurement range: -20 °C to +260°C (0°to 500°F)
■■
■■
■Resolution: 1°C/°F
■■
■■
■Polarity indication: automatic (- values only)
■■
■■
■Adjustment of zero: automatic
■■
■■
■Accuracy: ±2% of the reading or ±3°C/6°F (the highest) at an
Ø50 Ø100 Ø150 Ø200 mm
0200
cm
Diameter of measurement field
Distance from target
50 100 150

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ambient temperature of +18 to +28°C (64.4 to 82.4°F) (the
highest) and for a distance from the target of up to 10 cm.
■■
■■
■Temperature drift: ±0.% L or 0.2°C (0.36°F) (the highest)
in °C or °F, >28°C (82.4°F) or <18°C (64.4°F)
■■
■■
■Spectral response: 6 to 14 µm
■■
■■
■Emissivity: preset at 0.95
■■
■■
■Response time: 1 sec
■■
■■
■Repeatability: ±1% L or ±1°C (the highest)
■■
■■
■LASER sight: < 0.5 mW (670 nm typ.)
■■
■■
■Utilisation environment
0 to +50°C (32°F to 122°F) <75% RH
■■
■■
■Storage environment
-20°C to +60°C, (-4°F to 140°F), 0 to 80% RH, without
battery
■■
■■
■Power supply:9 V battery type 6LR61 or 6LF22
■■
■■
■Dimensions / Weight
173 x 60.5 x 38 mm / 190 g with batteries
■■
■■
■Electromagnetic compatibility
Emission as per EN 50081- Ed. 1992
Emission as per EN 50082- Ed. 1992
6. MAINTENANCE
For maintenance, use only specified spare parts. The
manufacturer will not be held responsible for any accident
occuringfollowing a repair done other than by its After Sales
Service or approved repairers.
6.1 Upkeep
6.1.1 Changing the battery
■Remove the cover at the back of the instrument
■Replace the old battery (9 V 6LR61 or 6LF22 type)
6.2 Operating test
For a quick check that the probe is functioning correctly, point
the lens at water with ice cubes in it, since this provides a simple
reference for 0°C (32°F).
6.3 Cleaning the lens
■Remove dust using a clean rubber dust-removing bulb
■Carefully remove any remaining particles using a clean, soft
cloth
■Carefullyclean the lens witha damp,soft clothand leaveto dry.
Do not use solvents
6.4 Cleaning the housing
Clean the unit with a cloth and a little soapy water.Clean off with
a damp cloth.
Do not use any solvents.
!
!
!
!

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6.5 Metrological Checks
It is essential that all measuring instruments are regularly
calibrated.
For checking and calibration of your instrument, please contact
our accredited laboratories (list on request) or the Chauvin
Arnoux subsidiary or Agent in your country.
6.6 Repairs
Repairs under or out of guarantee: please return the product to
your distributor.
7.TO ORDER
C.A 870 ............................................................. P01.6514.01Z
C.A 872 ............................................................. P01.6514.02Z
Comes with shock-proof surround, 9 V battery and these
operating instructions.
Spare parts :
Battery .................................................................. P01.1007.32