Calibration with partially
filled vessel
If the following calibration during the hydrostatic level measurement is carried out with
water (density = 1g/cm3), the correction factor indicated in the V8H7 corresponds in
each case to the density of the product.
Sensor calibration
Step Matrix Entry Significance
1 V9H5 e.g. 672 Reset transmitter
2 - »E« Register entry
Note! See also Section 4.1 Commissioning, V3H5; V3H6
3 V8H0 5 Enter operating mode
4 - »E« Register entry
5 V8H2 4 s Set switching delay to min. 4 s
6 - »E« Register entry
7 V8H3 e.g. 80% Enter installation height of limit switch
in desired unit
8 - »E« Register entry
9 V8H4 0 Enter sensor type: 0 = Liquiphant; 1 = capacitance probe
10 - »E« Register entry
11 V8H5 0 only for capacitance probes (channel 2)
Perform calibration with exposed probe
12 - »E« Register entry
13 V8H6 e.g. 1 only for capacitance probes (channel 2)
Set switching point in Hz,
Section 8.2
14 - »E« Register entry
Level calibration
Step Matrix Entry Significance
1 V8H7 1 With vessel partially filled (0
…
40 %), enter density
(correction factor)
2 - »E« Register entry
3 V0H1 e.g. 10% Enter »empty« level
4 - »E« Register entry
2 V8H7 1 Fill vessel (60
…
100%) and re-enter density
(correction factor)
3 - »E« Register entry
3 V0H2 e.g. 90% Enter »full« level
4 - »E« Register entry
Note!
• The best accuracy is attained when the difference between »full« and »empty«
levels is as great as possible.
• If operating mode 5 is temporarily quit, the Silometer measures by using the
sensitivity V3H2 x V8H7. The indication remains correct as long as the same product
is in the tank.
• Analogue output and relays are set as described in Chapter 6 and 7.
Silometer FMC 671 Z/676 Z Chapter 8: Other Applications
49
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