4
IE-COM-C3121P-1
The sensors (under the probe cover) should not be exposed to direct contact with
water or other liquids. Probe should not be exposed to mechanical vibrations.
Storing conditions: temperature -10 to +60 °C relative humidity 5 to 95 %RH
Dimensions: 141 x 71 x 27 mm
Weight including battery: approximately 150 g
Material of the case: ABS
Material of the probe: duralumin with the black eloxal surface finish
Battery life depends on selected display refresh mode (see below). In FAST mode display is
refreshed in shortest possible interval with highest current consumption. In dynamic mode display
is refreshed in interval up to 5 s in case measured values remain stable. Refresh interval is
shortened to approximately 0.7 s only if measured values change. Current consumption in this
mode in usual operation is lower, battery life is up to 4 times longer. The FAST mode is
recommend to use only in cases, when slower display response is not acceptable.
Battery voltage drop below 7 V is indicated with blinking of "BAT" in default display mode
(displaying of actual values) and FAST mode is automatically canceled to save the battery. At the
same time audio indication of alarms is automatically switched OFF.
If instrument is powered from external ac/dc adapter, internal 9V battery is replaced with
rechargeable NiCd accumulator. In usual operation from adapter accumulator is charged only with
small current. If accumulator is totally discharged, its full charging in instrument takes
approximately 100 hours. Instrument with accumulator is not recommended for permanent
operation without ac/dc adapter plugged. Accumulator works only as a standby source in case of
power mains failure.
Switching ON and OFF the instrument
Connect the external probe to the connector before switching ON the
instrument. Probe is calibrated with the delivered instrument and it is not
possible to replace it with another (if you have several instruments of this
type). Switch ON the instrument by pressing ON/OFF key. After switching
ON the instrument all symbols on the LCD are displayed. If the ON/OFF
key is being held pressed, all LCD symbols are displayed till the key is
released.
In usual operation instrument then starts the measurement mode and actual measured values are
displayed. If instrument is ON, do not disconnect or connect the probe to prevent storing of
incorrect value to minimum and maximum memory.
Displaying of actual measured values
In this mode is instrument anytime after switching ON. It is possible to enter this mode from
other modes by pressing or by repeating pressing of MENU key. If the external probe is not
connected properly or probe temperature is out of measuring range, reading -- is displayed on the
appropriate LCD line.
Temperature in °C is displayed on the upper LCD line and relative
humidity in %RH is displayed on the lower LCD line.
