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GREISINGER GMH 3230 Bedienungsanleitung Seite 13

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GMH3230e.03
Special Functions - Please Note:
Display Resolution ('Resolution')
Standard setting: 'Auto',i.e. the unit automatically switches over to the optimum resolution between 1° and 0.1°.
If temperatures to be measured are near the switching threashold, a fixed resolution may be better, e.g. for easy recording.
In such a case please select the optimum resolution manually.
Zero Displacement ('Offset')
A zero displacement can be carried out for each of the two channels CH1 or CH2.
temperature displayed = temperature measured - offset
Standard setting: 'off' = 0.0°, i.e. no zero displacement will be carried out. The zero displacement is mainly used to
compensate for sensor deviations. Unless 'off' is set, this value will be displayed shortly after the unit is switched on; during
operation it will be identified by means of the offset arrow in the display.
Display Correction Factor ('Corr')
This factor is applied to both sensor channels.
temperature displayed [°C] = temperature measured [°C] * Corr
or temperature displayed [°F] = (temperature measured [°F]-32°F) * Corr + 32°F
Standard setting: 'off' =1.000
This factor is used to compensate for losses of transfer in case of surface measurements, occurring if the object to be
measured is extremely hot but will be cooled by lower ambient temperatures. The same can be true for sensors with a large
mass. Unless 'off' is set, this value will be displayed shortly after the unit is switched on; during operation it will be identified
by means of the Corr-arrow in the display
Tare Function
The tare function is used to set the DIF-display to zero, which is especially important when monitoring temperature
differences. If the tare key is pressed for more than 2 seconds DIF = CH1-CH2 will be restored. This function as well as the
DIF-display can only be used if two sensors are connected. If the tare function is activated, this will be shown by the tare
arrow in the display.
Base Address ('Adr.')
Using the interface converter GRS3105 it is possible to connect several instruments to a single interface. As a precondition
the base addresses of all units must not be identical. In case several units will be connected via one interface make sure to
configurate the base addresses accordingly.
Channel 1 will be addressed by the base address set, channels 2 and 3 will have the following addresses.
(Example: base address 21 - channel 1 = 21, channel 2 = 22, channel 3 = 23)
Measuring Temperature With Thermoelements
- Make sure that the correct type of thermoelement is set (p.r.t. "Configuration of The Instrument")! Otherwise a wrong
temperature will be displayed. The measuring device has been optimised for measurements with a type K probe.
- If other thermoelements but type K (NiCr-Ni) are used already the smallest temperature difference between plug and
instrument will result in measuring errors. Therefore wait for the temperatures to adjust after plug-in or touching a
sensor plug (depending on temperature ~15min.)
- Thermoelements are suitable to measure within a large temperature range. But keep in mind the allowed temperature range
of your specific temperature probe!
H35.0.01.6C-03
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