RANGE CALIBRATION PARAMETERS (P650 to P654)
P650 OFFSET CALIBRATION
Use this feature to calibrate Empty (P006), especially if the reported level is
consistently high or low by a fixed amount, (e.g. 2 cm).
Before using this feature, verify the following parameters are correct:
Empty (P006), Temperature (P664), Offset Reading (P062),
Zero Head Offset (P605), if used.
With the level steady ...
1. to display the calculated space, level, or distance.
2. Repeat step 1 at least 5 times to verify repeatability.
3. Measure the actual space, level, or distance (e.g. with a tape measure).
4. Enter the actual value.
The deviation between the
entered Empty (P006) value and the calibrated
"Empty" value, is stored in Offset Correction (P650).
values: -999 to 9999
P651 SOUND VELOCITY CALIBRATION
Use this feature if:
a) The acoustic beam atmosphere is other than "air".
b) The acoustic beam atmosphere temperature is unknown.
c) The Reading accuracy is acceptable at higher material levels only.
With the level steady at some low value...
1. Allow sufficient time for the vapour concentration to stabilize.
2. to display the calculated space, level, or distance.
3. Repeat step 2 at least 5 times to verify repeatability.
4. Measure the actual space, level, or distance (e.g. with a tape measure).
5. Enter the actual value.
(Velocity parameters P653 and P654 are adjusted accordingly).
Repeat this procedure if the atmosphere type, concentration,
or temperature varies from that present when the last sound
velocity calibration was performed.
values: -999 to 9999
PL-507 122
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