INT - Measuring interval
Defines the time interval for temperature and humidity measurement in the
range of 5 - 120 minutes.
C- F - Temperature unit
Changes the temperature unit from °C to °F. All settings (e.g. alarm limits) as
well as recorded values are displayed according the selected unit. Data on
the microSD-card is also stored in the selected unit.
IR - Infrared Receiver
Sets MostraLog’s remote control response time in the range of 1 - 5
seconds. If, for example, a reaction time of 5 seconds is selected, keys on
the remote control must be pressed for at least 5 seconds to be recognized.
Short intervals improve reaction time but considerably reduce battery life.
If no remote control is used, select “OFF“ for maximum battery life (factory
setting). When the IR receiver is switched off, you can operate the MostraLog
via the device keys or via the PC software.
Note: Some light sources (e.g. energy-saving lamps) generate flicker in the
non-visible IR range. This can make MostraLog constantly detect false IR key
presses and thus very quickly drain the device’s battery. Permanently deacti-
vate the IR receiver if the batteries are completely discharged after only a
few days.
LCD - Display contrast
Adjusts the contrast of the LCD display. Contrast is influenced by the
ambient light conditions and the reading angle. Press the “
▲
“, button, the
display shows “OK“.
Note: The weaker the batteries, the lower the display contrast. If the battery
charge level falls below 30%, the display contrast is set to maximum to
ensure readability even with weak batteries.
CAL - Calibration
A calibration set with two saturated calibration solutions (sodium chloride
and magnesium dichloride) is available for readjusting the MostraLog.
Detailed calibration instructions are enclosed with the calibration set. Select
the appropriate calibration point: NA (NaCl) or MG (MgCl2) and start the
calibration process with “
▲
“. The display shows “OK” after successful calibra-
tion. If an error occurs, the display shows “ERR“. Possible causes of errors are,
for example, contaminated calibration solutions or wrong media selection
(NaCl instead of MgCl2).
DEF - Factory setting (default)
Resets the unit to the factory settings. Note that the IR receiver is turned off
by default. Date and time will not be changed.
VER - Firmware version
Displays the firmware version on the device.
Configuration with PC software
When the device is connected to a PC by mini-USB cable, data can be read
out and the device can be configured with the MostraLog PC software.
Since the device is connected to the PC as a mass storage device, you can
also access the data using Windows Explorer. To do so, wait until “MostraLog
Device“ and a drive letter appear. Then you can access the device like a USB
stick and transfer the recorded data to the PC.
Note: If the device is connected to a PC via USB, the display is cleared and
only the message “USB“ is displayed to indicate PC control.
Note: Depending on the capacity of the microSD-card, it may take several
minutes for the drive letter to appear on the PC. Use low-capacity microSD-
cards to minimize access times.
Batteries and power supply
Note: Almost all instrument settings are retained after a battery change. Only
the date and time must be readjusted, either by connecting the device to
your computer (MostraLog takes the computer’s time) or manually via the
device menu.
MostraLog can also be powered via a USB power supply. In order to do
this, connect MostraLog to a standard USB power supply using a mini-USB
cable. Any batteries should be left in the device, but won’t discharge when
supplied via USB. The display shows “USB“ instead of battery charge status.
The USB power supply makes it possible to change batteries without
interrupting data recording. USB-power the device before removing the
batteries, and leave it connected while you replace the batteries. After you
have inserted the new batteries, the USB power supply can be disconnected.
It is also possible to connect the MostraLog permanently via USB to use the
batteries as backup batteries, e.g. during a power failure.
External temperature/humidity sensor
If an external sensor is connected, the display shows values from the external
sensor, otherwise the values of the internal sensor are displayed. Values from
both sensors are stored on the microSD-card in parallel, resulting in four data
tracks (internal/external temperature, internal/external humidity).
Technical data
Temperature
sensor
Measuring range
-18°C to +70°C (0°F to 158°F)
Accuracy
±0.5°C(5°C to 45°C);
±1°F (41°F to 113°F)
Resolution
0.1°C (0.2°F)
Humidity
sensor
Measuring range
0 to 100% RH
Accuracy
±2% RH (10 to 90% RH)
Resolution
0.1% RH
Operating range
-18°C to +70°C (0°F to 158°F)/
0% to 100% RH
Memory
2 GB microSD-card
Measuring interval 5 - 120 min
Start options
Immediately
Alarm
Min-/Max limits, low battery
Alarm output
low side switch, digital signal
Data transfer
USB or microSD-card
Battery
2 x standard AAA, replaceable
Battery life
Up to 2.5 years at 23°C (73°F)
Housing
ABS, black or white
Dimensions
58 x 47 x 21 mm (2,3 x 1,8 x 0,8 inch)
Weight
57 g (2 oz)
External sensor
Cable 2m or 5 m; sensor head Ø 8 mm
