IMKO Trime-GW, Operating Instructions Manual

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measurement was already less than full, must be discarded as well. Also, after the first wave of sub-
ject material has been detected around the probe rods, the individual readings of the future
Queue-
FillingTime seconds must be discarded as well until the field of measurement is fully replenished
again.
The two time constants Queue-DischargeTime and Queue-FillingTime are adjustable and must be
determined by observing the relevant process.
If direct observation is not possible, suitable time constants can also be found by experimentation.
This can be done, for example, by determining those time constants from which point onwards no
further change can be detected in the reading when the discharge period starts or finishes. A certain
waiting period should also be added to the ascertained time values to be on the safe side and to ab-
sorb process fluctuations.
When performing a trial such as this, the subject material should be as homogenous as
possible and the averaging time low, though not less than 24s as the full functionality is
otherwise restricted (cf. Table 2
on page Fehler! Textmarke nicht definiert. ).
It must be assured that an adequate measuring time remains for each measuring cycle during which
no individual readings are discarded. This is the reason why the two time constants cannot, in general,
be permanently set at their maximum value. This remaining time should not be less than 10s; 5s is
conceivable in extreme cases.
4.1.3 A side-effect when using the time constants Queue-FillingTime and Queue-
DischargeTime
The option of being able to discard individual past readings where required demands that a current
individual reading must first of all be temporarily stored until it becomes clear whether it is to be dis-
carded or is to contribute to forming the mean value.
The (analogue or digital via PC) output reading is therefore “a glimpse into the past”:
under normal operation, the shift Queue-DischargeTime is a matter of seconds. In the transi-
tion from the "empty phase" to the "full phase", individual seconds-long Queue-FillingTime
measurements are discarded first and then followed by the loading of seconds-long Queue-
DischargeTime intermediate memory, producing in this case a shift in seconds of "Queue-
DischargeTime + Queue-FillingTime".
4.1.4 Setting Queue-FillingTime
The Queue-FillingTime can be altered as follows by plugging in the configuration plug “TRIME
®
-GW
Queue-FillingTime”:
1. Insert the plug into the TRIME
®
-GW’s configuration socket. As soon as the plug is in place, the
analogue output (or the LED panel in measuring station) do longer displays the current measure-
ment, but the current
Queue-FillingTime setting in seconds as per the following table. Each posi-
tion of the product selection switch corresponds to a certain Queue-FillingTime . If the configura-
tion plug is removed at this point, the Queue-Filling Time stored in the unit will remain unchanged.
2. As soon as the setting/position of the product selection switch is changed for the first time, the
appropriate Queue-FillingTime value can be read on the display.
3. As soon as the plug is removed again, the unit adopts the value set at the product selection
switch. If the plug is removed when the switch is in the [0] position, the internal setting remains
unchanged.
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