Instruction manual for use of temperature and RH logger S3541
Logger is designed for measurement and record of ambient temperature, relative humidity and
two signals 0-5Vdc. 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). Start/stop
magnet enables also to clear the minimum and maximum value memory. Start/stop magnet enables
also to clear the minimum and maximum value memory. It is also enabled to program automatic
start in certain day and time (for one month forward).
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).
Technical parameters:
Measuring parameters:
Ambient temperature (RTD sensor Pt1000/3850ppm):
Measuring range: -30 to +70 °C
Resolution: 0.1 °C
Accuracy: ± 0.4 °C
Relative humidity (reading is temperature compensated at entire temperature range):
Measuring range: 0 to 100 %RH
Resolution: 0.1 %RH
Accuracy: ± 2.5 %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: ± 0.5 °C from 30 to 95 %RH
Voltage inputs (IN1, IN2):
Voltage measuring range: 0 to 5 V dc
Effective resolution: 13 bits
Accuracy: ±0,2 % FS
Input resistance: approximately 100k ohms
Response time with plastic sensor cover (air flow approximately 1 m/s):
temperature: t63 < 2 min, t90 < 8 min (temperature step 20 °C)
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IE-LOG-S3541-04
