Endress+Hauser Float Tank Gauge LT11, Руководство по эксплуатации

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Float Tank Gauge LT11/12
42 Hauser
7 Troubleshooting
7.1 Failure cause and Countermeasure
Symptom Possible cause Corrective Measure
Indication does not
change at all 1) Measuring tape broken
After opening the tank, replace assuring
tape.
2) Guide wire caught
After opening the tank, re-stretch guide
wire.
3) Conster spring broken Replace
4) Drive checker caught
After opening rear cover of gauge head,
repair or replace
5) transmission gear for indication system
worn out
Replace gear set of indication system
6) Improper setting of sprocket or measuring
tape disengaged
Check after opening rear cover of gauge
head
7) Float sinks Replace after opening the tank
Frequent
indication error
1) Conster spring deteriorate
Check gauge operation by operating drive
checker. Replace conster spring if deteri-
orated
2) Cause mentioned in 2), 4), 5), or 6) men-
tioned above
Check internal components of gauge
head
3) Indicator pointer loosened
After opening indicator cover, check lock
nut for indicator pointer
4) Improper setting of tape guide Check gap between sprocket and tape
guide
5) Kink and twist of measuring tape After opening Sheave elbow cover, pull
measuring tape out and check. It is possi-
ble to repair as needed
Some error may be
observed compare
with measuring
value and indica-
tion one 1) Some error are observed in gauge Carry out previous check and counter-
measure
2) Some error are not observed in gauge Trouble by measuring
Influence by measuring technic
Influence by sludge deposition
Influence by big wind
Error by measuring scale
Check handle can
not rotate and
return
1) Checker shaft has rusted Clean up the shaft and replace check
handle
2) Check driver spring broken
Replace checker unit
7 Troubleshooting