Siemens HydroRanger 200 HMI Operating Instructions Manual page 235

Displays EEEE
Reading fluctuates while
material level is still (or
vice versa).
Reading is fixed, regard-
less of the actual material
level.
Material level reported is
always incorrect by the
same amount.
Measurement accuracy
improves as level nears
transducer.
Reading is erratic, with lit-
tle or no relation to mate-
rial level.
A5E36281317
Value too large to display in 4 or 5
characters.
Incorrect measurement stabiliza-
tion.
Transducer acoustic beam
obstructed, standpipe too narrow,
or transducer ringing (reads over
100%).
Incorrect empty (zero) reference for
level operation
2. 1 .3. Sensor Mode
( = *Level).
Incorrect Sound Velocity used for
distance calculation.
True echo too weak or wrong echo
being processed.
HydroRanger 200 HMI – OPERATING INSTRUCTIONS
2. 1 . 1 . Units
Select larger units (
116), or lower convert reading (
Convert Reading
on page 172).
2.3.4. Response
Alter rate of response (
Rate
on page 125) or rate filter (
Rate Filter
on page 125) accordingly.
Relocate and / or re-aim transducer at
material level or object.
Measurement difficulties
Proceed to
on page 228.
2.2.4. Empty
See on page 122,
Offset Reading
on page 173,
sor Offset
on page 123, and
set Correction
on page 160.
Use a transducer with a built-in tem-
perature sensor or a TS-3 temperature
sensor.
2. 1 1. 1 .2. Sound Velocity
See
157.
Relocate and/or re-aim transducer at
material.
Check noise parameters.
Noise problems
See on page 226.
on page
2. 1 2.5.
2.3.5.
2. 1 2.6.
2.2.5. Sen-
2. 1 1. 1 .9. Off-
on page
Page 225