4.3 Level measurement
This chapter contains the following information:
•
General description of
operation with keys
– Setting lower and upper range-values: Calibration without reference pressure
– Adjusting lower and upper range-values: Calibration with reference pressure
– Adjusting lower and upper range-values: Reference pressure is near lower and
and upper range-values
– Compensation for bias pressure
•
Commissioning the measuring point
– Open tank
– Closed tank
– Closed tank with steaming liquid
•
Select "linear" curve with the rotary switch
•
Set damping (integration time)
Further information
is obtained over the
operating matrix
. Operating over the handheld
terminals or operating matrix is described in
chapter 6
.
Note: Calibration with keys
If initial start-up is carried out without a handheld terminal or operating program then any
display mounted will show pressure values with zero point compensation. After initial
settings with the handheld terminal or operating software, level can be shown in other
units (level, volume, mass). (See chapter 6.)
Lower and upper
range-values:
calibration without
reference pressure
The desired lower and upper range-values are set using keys.
#
Key
Entry
1
Set lower range-value:
Press +Z or –Z several times.
(As the span remains constant, the
upper range-value is shifted to the
same extent as the lower
range-value.)
2
Set upper range-value:
Press +S or –S several times.
(The lower range-value is unaffected.)
Lower and upper
range-values:
calibration with
reference pressure
A reference pressure which corresponds exactly to the desired upper and lower
range-values is available.
#
Key
Entry
1
Exact pressure for lower range-value is acting
2
Press +Z and –Z simultaneously once.
(As the span remains constant, the
upper range-value is shifted to the
same extent as the lower
range-value.)
3
Exact pressure for upper range-value is acting
4
Press +S and –S simultaneously once.
(The lower range-value is unaffected.)
– –
+ +
Z
S
– –
+ +
Z
S
– –
+ +
Z
S
– –
+
+
Z
S
– –
+ +
Z
S
– –
+ +
Z
S
– –
+ +
Z
S
– –
+ +
Z
S
BA 174Y16
Note!
4 Commissioning the Measuring Point
Deltabar S
22
Hauser
