Instruction manual

Page 14 XPS/XCT Transducers– INSTRUCTION MANUAL 7ML19981AK01
Liquid Applications - Volume
1. Beam should not detect bin bottom. If this occurs use range extension parameters
(on transceivers where available) to omit false echoes. A 6° beam angle represents
a rise : run of about 20 : 1 (10 : 1 for 12°). In most tanks, the transducer should be
centered as much as possible (without interference from inlet) for optimum reading
range.
2. Sound beam must be perpendicular to liquid surface. If standpipe is used, refer to
Liquid Applications - Standpipes.
3. Echo has missed improperly leveled transducer.
4. When performing an empty or full calibration, the tank must contain its normal
vapour and be at its normal temperature.
Acceptable Preferred Not Acceptable
Maintain full level
f
or full calibration.
A
bove this level
erroneous readings
w
ill result as level
has entered
blanking zone.
(shaded area)
tank
manufacturer’s
full level
span: corresponds to
tank manufacturer’s
empty level.
tank manufacturer’s
empty level
dischargemay require target to
obtain empty reading
Empty level for
acceptable location.
Below this level, echo
would reflect away
from the transducer.
rise
beam
angle