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6 Explanations Volume 3
6.6 Reading-in Pulse Rates
For each calibration you have to read-in or enter count rates.
Please refer to Volume 3, section 4, for more information on this
procedure.
Read or Enter count rate?
The count rate can be read-in or entered. Typically, the pulse rate is
read in.
If the pulse rate has already been determined in the past, or in
another manner, then you can enter the pulse rate manually.
6.6.1 Procedure
Select READ or ENTER.
with
READ the current count rate is read-in.
with
ENTER you can enter a count rate manually.
Reading-in count rates:
If necessary, change the value for the averaging time.
The standard value 0 selects an averaging time of 30s, which
suffices in most cases. This means that the process is over after
30 seconds.
Enter a value >0 to determine another averaging time in sec-
onds. The longer this time, the more accurate the averaging.
Do not enter a figure that is too high by mistake!
The process can be stopped only by turning off the Uni-Probe and
by temporarily removing the batteries in the HART
®
Communica-
tor.
Start reading-in the count rate with ENTER.
During averaging the level in the tank must not change. If you are
working with agitators, the agitator must be running and you may
have to use a longer time, e.g.300 s.
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