BCM-MS, BCM-LS
5.2.3 Function Range Depending On Configuration
Depending on the desired functional range, the sensor can be
configured with additional information to use the corres-
ponding functions. The table shown here contains a list of the
necessary sensor configurations for the respective functional
range. For information about configuring the sensor, please
refer to the detailed operating instructions (download from
www.buehler-technologies.com).
Configurations necessary for function range
Function range/scenario
Required system information/
required configuration
• Basic parameters: Tem-
perature, humidity, P, C,
P40, C40
• Average temperature,
load factor since start-
ing sensor
• Short-term gradients
• Water content alarms,
"Oil level low"
• No additional system in-
formation required
• High temperature
alarms
• Limits for maximum and
average temperature must
be adjusted for the applica-
tion
• Detect contamination
with other oils/fluids
• Long-term gradients
• Teach-in process must al-
ways be initialized with
fresh oil
• Aging progress of char-
acteristics (P40 and C40)
• Alarms for aging pro-
gress of limits
• Teach-in process must al-
ways be initialized with
fresh oil
• Limits for P40 and C40
must be configured (if de-
fault configuration insuffi-
cient)
• Predicted oil "Remain-
ing Useful Lifetime"
• Teach-in process must al-
ways be initialized with
fresh oil
• Limits for P40 and C40
must be configured (more
information available than
specified by default config-
uration)
• System load factor and the
associated oil lifetime must
be known
Tab. 5:
Function Range Depending On Configuration
6 Maintenance
Always observe the applicable safety and operating regula-
tions when performing any type of maintenance. For informa-
tion about maintenance, please refer to the original operating
instructions on our website at
.
7 Service and Repair
For a detailed description of the device and information about
troubleshooting and repair, please refer to the full operating
instructions on our website at
7.1 Troubleshooting
Error
Possible Cause
Action
• No sensor
communic-
ation with
HyperTer-
minal
Cable not prop-
erly connected
First check the electrical
connection of the sensor
and verify the data and
power cable are properly
connected. Please note the
prescribed pint assign-
ment.
Operating
voltage outside
the prescribed
range.
Please operate the sensor
within a range between
9 V and 33 V DC.
Interface config-
uration incorrect
Check and if necessary
correct the interface para-
meter settings (e.g. 9600,
8.1, N, N). Test communic-
ation with a terminal pro-
gram, if necessary with an
interface tester.
Incorrect commu-
nication port se-
lected
Check and if necessary
correct the selected com-
munication port (e.g.
COM1).
Incorrect sensor
command syntax
Check the syntax of the
sensor commands. Partic-
ularly note capitalisation.
If the commands are in-
valid, the sensor will re-
turn the string with a
question mark in front of
it.
Incorrect or de-
fective cable
If possible, use original
data cables
RS-232 interface
not enabled
Temporarily or perman-
ently enable the RS232
port with CMSensorConfig
or a terminal program as
described in chapter Oper-
ation and Control.
• Measure-
ments im-
plausible or
measure-
ments fluc-
tuate
Sensor measur-
ing air due to
highly fluctuat-
ing tank volume
Verify the sensor is in-
stalled properly per the in-
stallation instructions.
Sensor measur-
ing air in the oil
or polar deposits
in the oil sump
Verify the sensor is in-
stalled properly per the in-
stallation instructions.
The oil is very
foamy
Verify the sensor is in-
stalled properly per the in-
stallation instructions.
Foam can particularly be
13
Bühler Technologies GmbH
BX150104 ◦ 03/2021
