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IE-LOG-S3120E-03
Instruction manual for use of temperature and RH logger S3120E
Logger is designed for measurement and record of ambient temperature and relative humidity.
Measuring sensors of temperature and humidity are attached to logger. Measured values including
calculated dew point temperature are displayed on the two-line LCD display and are stored in
selectable time interval to internal nonvolatile memory. All logger control and setting are performed
from the PC and password is applicable. It is enabled to switch ON and OFF the logger by delivered
magnet (this possibility can be in configuration disabled). It is also enabled to program automatic
start in certain day and time (for one month forward). Start/stop magnet enables also to clear the
minimum and maximum value memory.
Minimum and maximum measured values can be displayed (display switches to actual
measured values and min/max values automatically). It is also possible to operate logger with
switched OFF display. Short display of actual measured values is enabled by means of magnet.
Switched ON logger every 10 seconds (independently on logging interval) updates MIN/MAX
memory, compares measured values of each quantity with two adjustable limits for each quantity
and exceeding of limits is indicated on the display (alarm function). Also memory alarm mode is
selectable, when alarm is indicated permanently till alarm memory reset. Alarm function is enabled
or disabled for each quantity individually.
Logging mode can be adjusted as non-cyclic, when logging stops after filling the memory.
In cyclic mode oldest stored values are overwritten by new. In addition logging mode can be
selected when logging is active only if measured value is out of adjusted alarm limits.
Stored values can be transferred from logger memory to the PC by means of communication
adapter. Communication adapter can be connected to the logger permanently – data logging is not
interrupted even if data download appears.
Logger evaluates minimum battery voltage and its drop below allowed limit is indicated on the
display. At the same time value of remaining battery capacity is available by means of the PC
program and appears on the logger LCD in % (every time after switch ON).
Warning
The device can be services only by a qualified person. The device contains no serviceable parts
inside.
Don’t use the device if it doesn’t work correctly. If you think, that the device is not working
correctly, let check it by qualified service person.
It’s forbidden to use the device without the cover. Inside the device can be a dangerous voltage
and may be risk of electric shock.
Technical parameters:
Measuring parameters:
Ambient temperature (RTD sensor Pt1000/3850ppm):
Measuring range: -30 to +70 °C
Resolution: 0.1 °C
Accuracy: ±0.6 °C from –30 to +30 °C, ±0.8 °C from +30 to +70 °C
Relative humidity (reading is temperature compensated at entire temperature range):
Measuring range: 0 to 100 %RH
Resolution: 0.1 %RH
Accuracy: ± 3.0 %RH from 5 to 95 %RH at 23 °C
Dew point (value calculated from temperature and humidity):
Range: -60 to +70 °C
Resolution: 0.1 °C
Accuracy: ± 2.0 °C at ambient temperature T < 25°C and RV > 30 %, for
more details see Appendix A
Response time with plastic sensor cover (air flow approximately 1 m/s):
temperature: t63 < 2 min, t90 < 8 min (temperature step 20 °C)
