Parameters: Time Constants; Parameter: Pump/Lcd Contrast - Siemens ULTRAMAT 23 Series Equipment Manual

Functions
8.3 Parameter
8.3.4

Parameters: Time constants

Time constants
T90 within : 12.0 s
T90 outside:
Threshold
Figure 8-5
8.3.5

Parameter: Pump/LCD contrast

Adjust pump / flow
Adjust LCD contrast
132
SO2
3.5 s
: 3.0 %
833
T within is
T outside is
valid
valid
Time constants
834
You can use this function to set various time constants to sup‐
press noise in the measured signal. During processing of the
measured signals, these time constants reduce the noise by de‐
laying the signal. The time constant "T
within an adjustable interval whose threshold values are de‐
fined as a percentage of the smallest measuring range. The time
constant dampens small changes in signal (e.g. noise), but be‐
comes immediately ineffective if a fast change in signal exceeds
a threshold. If the threshold is exceeded, the signal is dampened
by the time constant "T
90
old value again. "T within" then becomes effective again.
90
T within is
valid
Upper limit
Measured value
Lower limit
t
Fast change in signal
The following values are possible for the time constants:
• T within: 0.1 to 99.9 (s)
90
• T outside: 0.1 to 99.9 (s)
90
• Threshold (data in %): 0 ... 100% of smallest range
You can use this menu to select two dialogs via which the pump
capacity and the contrast of the LCD can be changed.
within" is effective
90
outside" until it falls below the thresh‐
Equipment Manual, 04/2022, A5E37100388-012
ULTRAMAT 23