User manual

H54.0.01.6C-02 Manual GMH3210 Page 4
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2.9 'dAC.0Volt': Output Offset When Output = Analogue Output
-220...1372°C: (depending on selected range) Input of the temperature at which 0V should
be output
2.10 'dAC.1Volt': Output When Output = Analogue Output
-220...1372°C: (depending on selected range) Input of the temperature at which 1V should
be output
3 Basics Of Thermocouple Temperature Measurements
• The right thermocouple type has to be selected prior to measuring (p.r.t. Device Configuration). Otherwise the
instrument will display a wrong value! The device is optimised for type K usage.
• Temperature differences between the instrument and the probe connector may produce measuring errors,
especially when using other types than type K. Therefore wait after connecting or touching the connector until the
temperatures have adjusted (can take several minutes, depending on the temperature differences).
• The device is suitable to measure large temperature ranges. But consider the allowable range of the probe!
• When measuring air temperature the probe has to be dry. Otherwise the cold due to the evaporation causes too
low measurings.
4 Special Functions
4.1 Display Resolution
Standard setting: 'Auto', i.e. the device automatically switches over to the optimum resolution between 1° and 0.1°.
If temperatures to be measured are near the switching threshold, a fixed resolution may be better, e.g. for easy
recording. In such a case please select the optimum resolution manually. Independent from this setting, type S
measurings are always in 1° resolution!
4.2 Zero Displacement ('Offset')
A zero displacement can be carried out for the measured temperature:
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 device is switched on;
during operation it will be identified by means of the offset arrow in the display.
4.3 Display Correction Factor ('Corr')
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 (standard setting: 'off' =1.000), this value will be displayed shortly after the device is
switched on; during operation it will be identified by means of the Corr-arrow in the display.
temperature displayed [°C] = temperature measured [°C] * Corr
or temperature displayed [°F] = (temperature measured [°F]-32°F) * Corr + 32°F
4.4 Output
The output can be used as serial interface (for GRS3100 or GRS3105 interface adapters) or as analogue output (0-
1V).
If none of both is needed, we suggest to switch the output off, battery life then is nearly doubled.
4.4.1 Interface - Base Address ('Adr.')
Using the a interface converter GRS3100 or GRS3105 (accessory) the device can be connected to a PC. With the
GRS3105 it is possible to connect up to 5 instruments to a single interface (please also refer to GRS3105-manual). As
a precondition the base addresses of all devices must not be identical. In case several devices will be connected via
one interface make sure to configure the base addresses accordingly.