User Manual

7
2.2. FUNCTIONS OF THE INSTRUMENT
The C.A 1246 is a thermo-hygrometer. It is used to measure temperatures from -10 to +60°C and relative humidity from 3 to 98% RH.
This instrument is easy to use. It has extensive stand-alone capabilities and can display:
 temperature measurements in °C or in °F,
 to record a minimum and a maximum in a specied period,
 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. 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.
REC
However, it is not possible to switch the instrument off when it is in record mode and is
recording.
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.
2.4. FUNCTION KEYS
Key Function
°C/°F
 A short press on the key displays:
Secondary display unit
Relative humidity
(RH)
Dew point
(Dp)
Dew point
(Dp)
Main display unit
Temperature (T) Relative humidity
(RH)
Temperature
(T)
 A long press on the °C/°F key toggles the unit in which the temperature is displayed between °C and °F.
MEM
REC
 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.
A short press on the key switches on the back-lighting.
HOLD  A short press on the HOLD key freezes the display.
 A long press on the key activates or deactivates the Bluetooth link.
MAX
MIN
 A short press on the MAX MIN key opens the MAX MIN mode; the current values continue to be displayed.
 A second press displays the maximum value.
 A third press displays the minimum value.
 A fourth 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 MIN mode.