KROHNE BM 70 M - Manual (Page 66)

66 BM 70 M
Group A: Signal output
No.
Fault / Symptom Cause Corrective action
A4 Data Communication
via the digital
interface not
functioning.
Communication interface
set incorrectly. Set Communication interface,
Sect. 8.6.9, correctly (Fct.3.3.5 -
3.3.7).
The computer system for
Communication with the BM
70 M is incorrectly
configured. Check computer system.
Incorrect connection to the
interface. Check connection.
Communication interface is
defective. Consult KROHNE Service or
replace BM 70 M instrument
head as described in Sect. 7.3.
Group DA: Display and signal output
No.
Fault / Symptom Cause Corrective action
DA1 Display and current
output supply
incorrect measured
values. Display and current output
are set incorrectly. Set display (Fct. 3.2.1 -3.2.4)
and current output (Fct. 3.3.1 -
3.3.4) correctly, as described in
Sect. 8.6.7 and 8.6.8.
An error has occurred.
Display and current output
are, however, not set for
error messages; markers 1-
6 are perhaps ON. Invoke Error List, see Sect. 8.8,
also for cause and elimination.
If (also) one or several markers
are ON, see Sect. 8.8.2.
DA2 Display and current
output supply a
largely constant
measuring error of
approx. 19 cm. Distance piece is provided
but not configured correctly. Set Fct. 3.1.5 DIST.PCE. (see
Sect.8.6.4) to 120 mm when
distance piece fitted, otherwise
to 0 mm.
DA3 Display and current
output supply a
largely constant and
large-size measuring
error. Tank height set incorrectly
(level measurement). Set Fct. 3.1.1 TANKHEIGHT
(see Sect.8.6.2) correctly; if
possible, use automatic tank
height determination, Fct. 3.5.1
(see Sect. 8.6.11)
Reference offset (distance
measurement) or tank
bottom offset (level
measurement) incorrectly
programmed. Set offset values correctly, Fct.
3.1.7 - 3.1.8
(see Sect. 8.6.6).
DA4 Measuring error in
the stilling well
increases steadily in
step with increasing
distance. Stilling well not included in
the configuration. Set Fct. 3.1.6 STILLWELL
correctly
(see Sect. 8.6.5).
DA5 major measuring
errors (> 3 cm) with
Wave-Stick in the
close range (up to
approx. 1 m
distance)
Antenna type is incorrectly
set. Set Fct. 3.1.3. ANTENNA to
"WAVE-STICK"
(see Sect. 8.6.3)