User manual

H61.0.2X.6B-01 User’s Manual GMH 3210 page 9 of 12
8.2 Analogue Output – Scaling with DAC.0 and DAC.1
Note: Analogue output can not be used during logger recordings
With the DAC.0 and DAC.1 values the output can be rapidly scaled to your efforts.
Keep in mind not to connect low-resistive loads to the output, otherwise the output value will be wrong and
battery life is decreased. Loads above ca 10kOhm are uncritical.
If the display exceeds the value set by DAC.1, then the device will apply 1V to the output
If the display falls below the value set by DAC.0, then the device will apply 0V to the output
In case of an error (Err.1, Err.2, no sensor, etc.) the device will apply slightly above 1V to the output.
plug wiring:
GND
+Uout
Attention!
the 3
rd
contact has to be left floating!
Only stereo plugs are allowed!
9 Input Adjustment
9.1 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.
9.2 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 dis-
played 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
10 Basics of Thermocouple Temperature Measurements
The right thermocouple type has to be selected prior to measuring (p.r.t. Device Configuration). Other-
wise 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 tempera-
ture 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.