Endress+Hauser Proline Prosonic Flow 93 - Page 131

PROline Prosonic Flow 93 PROFIBUS-DP/-PA 9 Trouble-shooting
Endress+Hauser 131
Attenuation of
acoustic
measurement section
too high
S SIGNAL LOW CH1
$ # 392
392 device failure BAD
0x0F
constant
Cause:
System error. Attenuation of
acoustic measurement section too
high.
Remedy:
– Check to see if the coupling fluid
must be renewed.
– It is possible that the fluid
indicates too much attenuation.
– It is possible that the pipe
indicates too much attenuation.
– Check the sensor distance
(installation dimensions).
– Reduce the number of traverses
if possible.
S SIGNAL LOW CH2
$ # 393
393
Pipe data ? CH1 P PIPE DATA ? CH 1
$ # 469
469 device failure BAD
0x0F
constant
Cause:
The inner diameter is negative.
Remedy:
In the function group PIPE DATA
check the values of the functions
CIRCUMFERENCE and WALL
THICKNESS resp. LINER
THICKNESS.
Pipe data ? CH2 P PIPE DATA ? CH 2
$ # 470
470
Sound velocity in CH1
outside the range
P S.V. RANGE CH1
$ # 492
492 non specific BAD
0x03
constant
Cause:
Process error. Sound velocity in
channel 1/2 is outside the search
range of the transmitter.
Remedy:
– Check the installation
dimensions.
– If possible, check the sound
velocity of the fluid or check the
specialist literature.
If the actual sound velocity is
outside the defined search range,
the corresponding parameters must
be changed in the LIQUID DATA
function group. Detailed information
on this topic is provided in the
Description of Device Functions
Prosonic Flow 93 (BA 077D/06/en)
manual under the SOUND
VELOCITY LIQUID (6542) function
or under Commuwin II

Parameter SOUND VELOCITY
LIQUID ((V9H2).
Sound velocity in CH2
outside the range
P S.V. RANGE CH2
$ # 493
493
Device status and
diagnosis message
(Control system)
Device status message
(Display)
No. Initial status
Analog Input Block/
Totalizer Block
Measured
value Quality /
Substatus /
Alarm limit
Cause/remedy