Siemens LR 460 Reads empty Reads vessel bottom Region, Set Far Range to a lower value, Fluctuates

B: Troubleshooting

Troubleshooting LR 460 (cont’d)

Symptom	Possible cause	Remedy
		Increase TVT manually at vessel bottom
Reads empty	Reads vessel bottom	region.
when vessel not	through low dK material.	Set Far Range to a lower value.
empty.		Lower TVT hover level.
Reading	Due to solids’ sloped	Reduce response rate.
	surfaces some fluctuation	Decrease fill/empty parameter values.
fluctuates.
	is normal.	Increase filter time constant in AIFB.
Echo has double		Increase Echo Reform.
peak/is split
Reading is too		Increase response rate.
		Turn off Window tracking.
slow and lags
		Change fill/empty rate parameter
behind actual
		values.
level change.
		Increase filter time constant in AIFB.
Device cannot		Make sure local operation is enabled.
be programmed		See Local Operation Enable on page 49.
via the		Also make sure that Write Locking is
handheld		Off. See Write Locking on page 49.
programmer
You are unable		Make sure remote operation is
		enabled. See Remote operation enable
to modify a
		(REMLOCK) on page 46. Also make sure
parameter via
		that Write Locking is Off. See Write
remote
		Locking on page 49.
communications

Page B-78 SITRANS LR 460 – INSTRUCTION MANUAL 7ML19985JM01