INSTALLATION
3
15
TT 51 SERIES
www.krohne.com
08/2015 - 4000754203 - MA TT 51 R03 en
3.3 Rail-mount transmitter
These transmitters are intended for installation on a rail according to EN 60715 / DIN 50022.
1
Fix the upper part of the transmitter onto the rail.
2
Press the lower part of the transmitter against the rail.
3
To remove the transmitter, use a screwdriver to bend the locking device using a small screw-
driver. Carefully pull the transmitter in the forward direction.
INFORMATION!
The TT 51 C transmitter has been developed for an ambient temperature of
-40...+85
°
C / -40...+185
°
F. Please also note that the ambient temperature is also dependent on
the temperature category. For detailed information refer to Ex data of the ambient temperature.
The process temperature is also transferred to the transmitter housing via the thermowell. If the
process temperature is close to or exceeds the maximum specified process temperature, then
the temperature in the transmitter housing can rise above the maximum permissible ambient
temperature. Always check that the ambient temperature where the transmitter is installed is
always within the permissible range. One way to decrease heat transfer via the thermowell is to
make the thermowell longer or in general to install the transmitter farther away from the heat
source. The same safety measures can be taken if the temperature is below the specified
minimum temperature.
Figure 3-2: Rail installation
MA_OPTITEMP_TT_51_en_150828_4000754203_R03.book Page 15 Friday, August 28, 2015 10:54 AM
