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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
• 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"
• High temperature
alarms
• Detect contamination
with other oils/fluids
• Long-term gradients
• Aging progress of char-
acteristics (P40 and C40)
• Alarms for aging pro-
gress of limits
• Predicted oil "Remain-
ing Useful Lifetime"
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 www.buehler-technolo-
gies.com.
BX150104 ◦ 03/2021
Required system information/
required configuration
• No additional system in-
formation required
• Limits for maximum and
average temperature must
be adjusted for the applica-
tion
• Teach-in process must al-
ways be initialized with
fresh oil
• 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)
• 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
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 www.buehler-technolo-
gies.com.
7.1 Troubleshooting
Error Possible Cause
Cable not prop-
erly connected
Operating
voltage outside
the prescribed
range.
Interface config-
uration incorrect
• No sensor
communic-
Incorrect commu-
ation with
nication port se-
HyperTer-
lected
minal
Incorrect sensor
command syntax
Incorrect or de-
fective cable
RS-232 interface
not enabled
• Measure- Sensor measur-
ments im- ing air due to
plausible or highly fluctuat-
measure- ing tank volume
ments fluc-
Sensor measur-
tuate
ing air in the oil
or polar deposits
in the oil sump
The oil is very
foamy
Action
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.
Please operate the sensor
within a range between
9 V and 33 V DC.
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.
Check and if necessary
correct the selected com-
munication port (e.g.
COM1).
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.
If possible, use original
data cables
Temporarily or perman-
ently enable the RS232
port with CMSensorConfig
or a terminal program as
described in chapter Oper-
ation and Control.
Verify the sensor is in-
stalled properly per the in-
stallation instructions.
Verify the sensor is in-
stalled properly per the in-
stallation instructions.
Verify the sensor is in-
stalled properly per the in-
stallation instructions.
Foam can particularly be
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