ABB TTH300 Operating Instruction page 20

20 TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. G
... 7 Installation
Installation options
There are three options for installing the transmitter:
• Installation in the cover of the connection head
(without springs)
• Direct installation on the measuring inset (with springs)
• Installation on a top-hat rail
Installation on the measuring inset
Figure 11: Installation example
Note
Before mounting the transmitter on the measuring inset, remove
the ceramic block on the measuring inset and the captive screws
in the transmitter.
To install the transmitter on the measuring inset, cambered
toothed discs and the corresponding mounting screws are
required; these must be ordered as separate accessories:
Measuring inset installation set (2 fixing screws, 2 springs,
2 toothed discs) order number: 263750
1. Remove the ceramic block from the measuring inset
2. Remove the screws from the transmitter
sleeves from the screw holes and then remove the screws.
3. Insert new fixing screws
the transmitter.
4. Place the cambered toothed discs
upward on the downward protruding screw thread.
5. Connect the power supply cable to the transmitter according
to connection diagram.
6. Place the transmitter in the housing on the measuring inset
and secure it.
Note
The toothed discs between measuring inset and transmitter are
straightened when the screws are tightened. This enables them
to grip the mounting screws.
2 . Remove the
from above in the fixing holes of
1
with curve facing
4
Installation in the cover of the connection head
Figure 12: Installation example
1. Release the screw plug
head.
2. Open the cover
3. Secure the transmitter
cover, using the captive screws found in the transmitter.
Installation on the top-hat rail
Figure 13: Installation example
When mounted on a top-hat rail, the transmitter can be placed at
a distance from the sensor in a housing that is suitable for the
3 .
ambient conditions.
3 for the cover of the connection
.
1
at the proper position on the
2