Operation
5.10 Parameters
FIDAMAT 6-G
Operating instructions, 07/2006, A5E00478463
5-27
5.10
Parameters
5.10.1
Parameter submenu
Parameters
THC
5O El. time constants
51 Limits
52 On-/off configuration
53 Status messages
...continue
Figure 5-28 Parameter submenu
The parameter menu contains all functions which are required for parameterizing the device.
You can branch to further parameter functions by pressing the fifth softkey, "...continue".
This menu is protected by the code of code level 1.
5.10.2
Electric time constants (function 50)
5O Electr. time con THC
Effective bandwidth in
% of smallest MR : : 6.O: %
Time constant within
bandwidth ti= 1O.O s
Time constant outside
bandwidth ta= 1.O s
Actual measured
value: O.OO ppm C1
Figure 5-29 Electric time constants
With this function, you set various time constants in order to reduce noise. The noise
reduction is approximately equivalent to a low-pass filter with the corresponding time
constant. The display delay is given as 90% of time.
The time constant "ti" acts within an effective interval to be parameterized, which is defined
in % of the smallest measuring range span. It attenuates small measurement changes (e.g.
noise) on the one hand, but becomes ineffective immediately when the measured value
exceeds the effective interval. In this case, the outer time constant "ta" attenuates the
measured value.