Milltronics AIRANGER DPL PLUS - RANGE CALIBRATION PARAMETERS (P650 to P654)

RANGE CALIBRATION PARAMETERS (P650 to P654)
P650 OFFSET CALIBRATION
Use this feature if the Empty (P006) value was estimated or if the reported material level is
consistently high or low by a fixed amount (e.g. 2 cm).
Before using this feature, verify the:
a) Empty (P006) value (as measured or estimated) was entered correctly.
b) Vessel atmosphere Temperature (P664) is correct.
c) Offset Reading (P062) value (if used) was entered correctly.
To perform an Offset Calibration:
With the material at a
high steady level...
1. Press to display the calculated distance
*
.
2. Repeat step 1 at least 5 times to overcome Echo Lock (P721) and verify repeatability.
3. Measure the actual distance
*
(e.g. with a tape measure).
4. Enter the actual value. (The Offset Correction amount is stored in P652).
values: -999 to 9999
P651 SOUND VELOCITY CALIBRATION
Use this feature if:
a) The vessel atmosphere is other than "air".
b) The vessel atmosphere temperature is unknown and a temperature sensing device is not used.
c) The Reading accuracy is acceptable at higher material levels only.
To perform a Sound Velocity Calibration:
With the material at a
low steady level...
1. Allow sufficient time for the vapour concentration to stabilize.
2. Press to display the calculated distance
*
.
3. Repeat step 2 at least 5 times to overcome Echo Lock (P721) and verify repeatability.
4. Measure the actual 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 vessel atmosphere type, concentration, or temperature varies from
that present when the last sound velocity calibration was performed.
values: -999 to 9999
* When Operation (P001) for the Point Number displayed is set for:
a) "level", the distance is from Empty (P006) to the material/object surface.
b) "space" or "tripper", the distance is from Span (P007) to the material/object surface.
c) "distance", the distance is from the transducer face to the material/object surface.
ENHANCEMENT PARAMETERS
PL-508 51