48
58-610 Model R82 Radar Transmitter
3.3
Troubleshooting
The Model R82 transmitter is designed and engineered for
trouble-free operation over a wide range of operating
conditions. Common transmitter problems are discussed
in terms of their symptoms and recommended corrective
actions.
WARNING!
Explosion hazard. Do not remove covers unless power
has been switched off or the area is known to be non-
hazardous.
Use of the included PACT
ware
™
PC program is highly
recommended and invaluable for troubleshooting and
advanced calibration. A HART RS232 or USB modem
(purchased separately) is required. See MAGNETROL
PACT
ware
™
bulletin 59-101.
Symptom
Problem
Solution
Level reading drops out at a
repeatable position in the
vessel
Multipath is cancelling good
level signal
Orient launcher to reduce multipath; turn launcher 10–20 degrees (1–2 index
marks) at a time until multipath at this point disappears. Refer to Section 2.4.2.3
Level reading locked onto a
value that is not correct
Measurement engine finding
a reflection it believes is
level signal
1. Is high dielectric (
ε
>10) foam present?
2. Run Echo Rejection routine with Level below this point (or with Empty tank) to
eliminate false echoes
LEVEL, % Output and LOOP
values are all inaccurate
Basic configuration data
questionable
1. Check validity of all configuration data
2. Check DISTANCE value of device against manually measured distance
LEVEL readings are repeat-
able but consistently high
(or low) from actual by a
fixed amount
Configuration data does not
accurately match tank
dimensions
1. Ensure proper values for Tank Height and Sensor Offset
2. Check vessel for present liquid level. Trim Level can be used to ensure
exact measurement
3. Reconfigure LOOP values if necessary
LEVEL reading on Display is
correct but LOOP is stuck at
4 mA
HART Poll Address set a
value of 1-15
Set HART Poll Address to 0
LEVEL reading on Display
stuck at value related to
Blocking Distance
Device believes antenna is
flooded (level very near or
on antenna)
Check actual level. If antenna is not flooded, power down, then power up
transmitter with the level well below the antenna.
3.3.1 Troubleshooting System Problems
