Operating instructions

Page 14 XPS 10/15 F Series Transducer A5E32725813
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 (XPS 15 F) represents a rise:run of about 20:1 (10:1 for the 12° beam
angle of the XPS 10 F). 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 page 13.
3. Echo has missed improperly levelled transducer.
4. When performing an empty or full calibration, the tank must contain its
normal vapour and be at its normal temperature.
5. When used in hazardous areas, the XPS 10 F series transducer (shown)
must use a hazardous seal. This seal is not supplied by Siemens. The XPS
15 F Series transducer comes equipped with a stainless steel coupling
suitable for use in hazardous locations.
beam
angle
rise
‘Alternate’
‘Preferred’
‘Bad’
tank
manufacturer’s
full level
may require target to
obtain empty reading
discharge
tank
manufacturer’s
empty level
Empty level for
‘alternate locations.
Below this level,
echo would reflect
away from the
transducer.
Maintain full level
for full calibration.
Above this level
erroneous readings
will result as level
has entered
blanking zone.
(shaded area)
span:
corresponds to tank
manufacturer’s
empty level.