Milltronics HydroRanger I - Page 87

SYMPTOM CAUSE ACTION
transducer location or
aiming:
- poor installation
- moved by material or
vibration
- flanging not level
- re-locate or insure that
transducer is aimed perpen-
dicular to liquid surface
for max. echo confidence,
P-80.
- refer to transducer installation
page 3 — 1 & fig. 4 & 5.
transducer malfunction
temp. too high or low
physical damage
- check P-65, 66 & 67
inspect
- excessive foam on
liquid surface
- use foam deflector or stilling
well
display will flash CAbl/
LOE, neon L1 will flash,
pulsing is felt on
transducer face
- ensure that polarity is correct
Reading Does Not
Change, But Level Does
HydroRanger I process-
ing wrong echo, i.e. ves-
sel wall, structural mem-
ber, stationary agitator.
- check transducer aim. Refer to
transducer installation page
3 — 1.
- check echoes with oscilloscope
transducer ringing,
reading high level
- transducer must not be in
contact with metal
- mounting need only be hand
tight. Refer to fig. 5.
- increase blanking P-5
- check echoes with oscilloscope
- raise short measurement confi-
dence threshold, P-81
transducer or TS-3
polarity incorrect
PL-399 8 — 5