Page 12 The Probe – INSTRUCTION MANUAL A5E32243983
mmmmm
English
Supplement
Measurement Interval
Troubleshooting
Patents
Instrument Housing Design:
• Canada: 70345
• U.S.A.: 07/858/707
• Germany: M92022723
• U.K.: 2021748
• France: 921873
• Japan: 966217
Electronics / Sensor:
• U.S.A.: 5,267,219
5,339,292
• U.K.: 2,260,059
• patent applications in U.K., Canada, Europe, Africa, Australia
The echo is not reliable and The Probe is waiting for a valid echo before updating the
measurement.
Probable causes are:
• material or object in contact with sensor face
• The Probe is too close to the fill point
• The Probe is not perpendicular to the liquid surface
• change in level too fast
• measurement out of range
• foam on liquid surface
• high level of vibration in the mounting structure
• level inside the blanking zone
The `Waiting' period has expired. Investigate the probable causes listed above.
Refer to Speed of Response on page 10 or Fail-safe Timer on page 11 for duration of
`Waiting' periods.
interval
seconds
mA loop current
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