Chauvin Arnoux C.A 846 User manual

C.A

846

■Thermo-hygromètre

■Thermo-hygrometer

■Thermo-Hygrometer

■Termo-igrometro

■Termohigrómetro

FRANÇAIS

ENGLISH

DEUTSCH

ITALIANO

ESPANOL

Notice de fonctionnement

User's manual

Bedienungsanleitung

Libretto d’Istruzioni

Manual de Instrucciones

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.

Thank you for purchasing this C.A. 846 pocket thermo-

hygrometer.

To get the best service from this instrument:

■read this user’s manual carefully,

■respect the safety precautions detailed

PRECAUTIONS FOR USE

■If the instrument is subjected to strong ambient temperature

variations, wait 20 minutes after stabilization before

resuming measurement.

■Comply with the environmental conditions (see § 4)

■Never take measurements in atmospheres polluted by

solvents, acetone for example, as this may damage the

sensor.

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).

CONTENTS

1. PRESENTATION .................................................................8

2. DESCRIPTION ....................................................................8

3. USE .....................................................................................8

4. SPECIFICATIONS ..............................................................9

5. MAINTENANCE ............................................................... 10

6. TOORDER ....................................................................... 10

7. APPENDIX ....................................................................... 23

English

1.PRESENTATION

The C.A. 846 pocket thermo-hygrometer is a highly

accurate instrument for measuring ambient temperature and

hygrometry; it is light with a digital display and is extremely

easy to use. It has a PT 1000 temperature sensor and a fast-

response, capacitive humidity sensor.

2.DESCRIPTION

See § 7. Attachment (at the end of this user’s manual)

➀Ambient temperature and hygrometry sensors

➁Backlit liquid crystal display

- Main display:

± numeric value of the temperature

numeric value of relative humidity

in 3½ digits or OL error code

- Symbols:

Low battery

Last value measured

MAX Maximum value of the temperature or hygrometry

°C/°F Value of unit displayed

%RH Relative humidity ratio (hygrometry)

➂Pushbutton control :

- short press: activates/deactivates backlighting

- long press: selects the measurement unit °C / °F

➃Holds last measurement displayed

➄3-way switch:

-OFF : Switches the instrument off

-°C/°F : Temperature measurement

- %RH : Relative humidity measurement

➅Maximum value of the temperature or hygrometry

3. USE

It's necessary to remove the saturation of the sensor

before to do hygrometry measurements.

3.1 Procedure

1. Unscrew the protective cover from the sensor.

2. To switch the instrument on: select the type of measurement

with switch ➄, the measurement is displayed.

For temperature measurements, the unit displayed is the

one which was in use before the instrument was switched

off. This unit can be changed by a long press on ➂.

For hygrometry measurements, wait until the display is

stabilized.

The backlighting of the display can be switched on with a

short press on ➂.

Note: If there is a sharp change in temperature, wait until

the display is stabilized.

3. Configure the instrument according to the type of

measurement to be taken using special function keys ➃or

➅(see § 2 and 3.2).

4. Note the value measured.

The instrument is switched off by returning the cursor of switch

➄to the OFF position. Screw the protective cover of the sensor

back on after use.

Note: If the temperature measured is outside the measurement

range, the instrument will display OL.

3.2 Special functions (see § 2. Description)

HOLD: when you press on ➃, the instrument displays the last

value measured, this value is not kept in memory when

the instrument is switched off

MAX: when you press on ➅, the instrument will display the

maximum temperature or hygrometry value until the

instrument is switched off or the key is pressed again.

4. SPECIFICATIONS

■■

■Sensor

- Temperature: Pt 1000 Ω

- Relative humidity: Capacitive

■■

■Measuring range

- Temperature: -20°C to +60°C (-4°F to 212°F)

- Relative humidity: 0% to 100% HR

■■

■Resolution:

- Temperature: 0.1°C/°F

- Relative humidity: 0.1% RH

■■

■Polarity indication: automatic

■■

■Accuracy

- Temperature:

± 0.5°C 0°C to +50°C

±1°C from -20°C to 0°C and from 50°C to 100°C

±1°F from +32°F to +122°F

± 2°F from -4°F to +32°F and from +122°F to +212°F

- Relative humidity:

±7.5% to 25°C, from 10% to 90% RH.

±10% to 25°C, from 0% to 10% RH and from 90% to 100%

■■

■Temperature drift

0.1 x accuracy by °C from 0 to +18°C and from +28 to +50°C

(+32 to +64°F and +82 to +122°F)

■■

■Climatic environment

- Utilisation: 0 to +50°C <75% RH

- Storage: -20°C to +60°C, 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

5.MAINTENANCE

For maintenance, use only specified spare parts. The

manufacturer will not be held responsible for any

accident occuring following a repair done other than

by its After Sales Service or approved repairers.

5.1 Upkeep

5.1.1 Changing the battery

■Put the switch in the OFF position

■Remove the cover at the back of the instrument

■Replace the old battery with a 9 V battery (6LR61 or 6LF22)

5.2 Cleaning the housing

Clean the unit with a cloth and a little soapy water. Clean off

with a damp cloth.

Do not use solvents.

5.3 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.

5.4 Repairs

Repairs under or out of guarantee: please return the product to

your distributor.

6.TOORDER

C.A 846 ..............................................................P01.1563.01Z

Comes with shock-proof surround, 9 V battery and these

operating instructions.

Spare parts:

Battery .................................................................. P01.1007.32

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