Installation; Ambient Conditions; Installation Options; Installation On The Measuring Inset - ABB TTH300 Series Operating Instruction

18 TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. E

7 Installation

DANGER
Improper installation and commissioning of the device
carries a risk of explosion.
For use in potentially explosive atmospheres, observe the
information in Use in potentially explosive atmospheres in
accordance with ATEX and IECEx on page 6 and Use in
potentially explosive atmospheres in accordance with FM
and CSA on page 12!

Ambient conditions

Ambient temperature
• Standard: −40 to 85 °C (−40 to 185 °F)
• Optional: −50 to 85 °C (−58 to 185 °F)
• Restricted range during operation with LCD-indicator:
−20 to 70 °C (−4 to 158 °F)
• Restricted range during operation with explosion-proof
design: see corresponding certificate
Transport- / Storage temperature
−50 to 85 °C (−58 to 185 °F)
Climate class in accordance with DIN EN 60654-1
Cx −40 to 85 °C (−40 to 185 °F) at 5 to 95 % relative air humidity
Max. permissible humidity in accordance with
IEC 60068-2-30
100 % relative air humidity
Vibration resistance in accordance with IEC 60068-2-6
10 to 2000 Hz at 5 g, during operation and transport
Shock resistance in accordance with IEC 68-2-27
gn = 30, during operation and transport
IP rating
• Power supply circuit: IP 20
• Measurement current circuit: IP 00 or IP-rating of installation
housing

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.
1
2
3
4
A10066
. Remove the
2
from above in the fixing holes of
1
with curve facing
4
.
3