Reference Manual
00809-0100-4026, Rev FA
July 2009
Rosemount 5400 Series
7-30
The transmitter displays
“measurement error” and
activates Measurement Alarm
when the product level is close
to the antenna.
May be caused by:
• Product level within the Hold Off
region, i.e. outside the approved
measuring range
Action:
• Avoid filling the tank to levels very
close to the antenna
• Move the transmitter to increase the
distance between maximum product
level and antenna, if possible
• Activate the Full Tank Handling
function if measurements up to the
antenna are required, see “Full Tank
Handling” on page C-5 and C-10
The measured level is unstable. May be caused by:
• An empty tank with the Amplitude
Threshold too low
• Product surface is close to a
registered False Echo
Action:
• Create a new Amplitude Threshold
Curve, see “Echo Tuning” on
page 5-10
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