144  CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER  |  OI/FCB400/FCH400-EN REV. E   
 
 
 
Replacing the sensor 
 
 
 
 
 
 
 
 
 WARNING 
Risk of injury due to process conditions. 
The process conditions, for example high pressures and 
temperatures, toxic and aggressive measuring media, can 
give rise to hazards when working on the device. 
•  Before working on the device, make sure that the process 
conditions do not pose any hazards. 
•  If necessary, wear suited personal protective equipment 
when working on the device. 
•  Depressurize and empty the device / piping, allow to cool 
and purge if necessary. 
 
 
NOTICE 
If the O-ring gasket is seated incorrectly or damaged, this 
may have an adverse effect on the housing protection class. 
Follow the instructions in Opening and closing the housing 
on page 38 to open and close the housing safely. 
 
 
Note 
The frontend board of the replacement sensor has a 
SensorMemory module. 
The calibration and system data of the sensor is stored in the 
SensorMemory. 
After powering-up the power supply, the transmitter 
automatically replicates the system data from the 
SensorMemory. 
 
Replace the sensor as described below:  
1. Switch off the power supply. 
2. Unscrew / remove the cover. 
3. Disconnect the signal cable (if necessary, remove the 
potting compound). 
4. Install the new sensor in accordance with Installation on 
page 31. 
5. Complete the electrical connection in accordance with 
Electrical connections on page 46. 
6. Unscrew / set down the cover once again 
7. After powering-up the power supply, the transmitter 
automatically replicates the system data from the 
SensorMemory. 
 
 
 
 
 
 
 
Returning devices 
 
 
Use the original packaging or a secure transport container of an 
appropriate type if you need to return the device for repair or 
recalibration purposes. 
Fill out the return form (see Return form on page 147) and 
include this with the device. 
In accordance with the EU Directive governing hazardous 
materials, the owner of hazardous waste is responsible for its 
disposal or must observe the following regulations for shipping 
purposes: 
All devices delivered to ABB must be free from any hazardous 
materials (acids, alkalis, solvents, etc.). 
 
 
Address for returns: 
Please contact Customer Center Service according to page 5 for 
nearest service location.