Presentation; Description; Use - Chauvin Arnoux C.A 846 Notice De Fonctionnement

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)
➀
Ambient temperature and hygrometry sensors
➁
Backlit 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
Maximum value of the temperature or hygrometry
MAX
Value of unit displayed
°C/°F
Relative humidity ratio (hygrometry)
%RH
➂
Pushbutton control :
- short press: activates/deactivates backlighting
- long press: selects the measurement unit °C / °F
➃
Holds last measurement displayed
➄
3-way switch:
- OFF : Switches the instrument off
- °C/°F : Temperature measurement
- %RH : Relative humidity measurement
➅
Maximum value of the temperature or hygrometry
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
➄
with switch , 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

3. USE

➂.
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