CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER  |  CI/FCB400/FCH400-EN REV. H  33 
 
 
 
 
 
Devices for legal metrology 
 
 
1 Lead seal  2  Lead seal wire 
Figure 11:  Sealing in accordance with MID / OIML R117 (example) 
 
On devices for legal metrology, the hardware write protection 
must be activated after commissioning in many cases. 
This prevents a change in the parameterization of the devices. 
Hardware settings on page 71 
 
To prevent deactivation of the hardware write protection or 
other manipulations during operation, the transmitter housing 
and the sensor housing connection box (with remote mount 
design) must be sealed. 
For this purpose, a seal kit is available at ABB. 
For the assembly of the seal, please observe the separate 
‘IN/FCX100/FCX400/MID/OIML-XA’ instructions. 
 
 
 
 
 
 
Process conditions 
 
Temperature limits °C (°F) 
 
Note 
When using the device in potentially explosive atmospheres, 
note the additional temperature data in Temperature data on 
page 13! 
 
Measuring medium temperature T
medium
 
• FCx430: −50 to 160 °C (−58 to 320 °F) 
• FCx450: −50 to 205 °C (−58 to 401 °F) 
 
In devices with order code ‘Extended tower length – TE3’, the 
measuring medium temperature must be limited to a maximum 
of 140 °C (284 °F) from an ambient temperature of ≥ 65 °C 
(149 °F). 
 
 
Temperature Data 
 
 
 Standard Optional
Ambient temperature  −20 to 70 °C
(−4 to 158 °F)
−40 to 70 °C
(−40 to 158 °F)
Storage temperature  −20 to 70 °C
(−4 to 158 °F)
—
 
Note 
When operating below -20 °C (-4 °F), the LCD display can no 
longer be read and the electronics should be operated with as 
few vibrations as possible. 
Full functionality is assured at temperatures above -20 °C (-4 °F). 
Storage temperature of the devices in the ‘Standard’ version 
without cable glands is also −40 to 70 °C (−40 to 158°F). 
 
 
Pressure ratings 
The maximum permissible operating pressure is determined by 
the respective process connection, the temperature of the 
medium to be measured, the screws, and the gasket material. 
For an overview of available pressure ratings, see Device 
overview in the data sheet.