KROHNE OPTITEMP TT 30 C-R EN - Manual (Page 14)

3
INSTALLATION
14
OPTITEMP TT 30 C/R
www.krohne.com 11/2012 - 4000753302 - MA OPTITEMP TT 30 C/R R02 en
Installation
3.1 Notes on installation
3.2 In-head transmitter (Ex and Non-Ex)
One way to decrease the heat transfer via the thermowell is to install the transmitter farther
away from the heat source. An alternative is to make the thermowell longer. Inversely you can
take similar measures if the temperature is below the specified minimum temperature.
INFORMATION!
Inspect the cartons carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
DANGER!
Never install or operate the Non-Ex version in potentially explosive areas, it might cause an
explosion that can result in fatal injuries! Only use the Ex version in potentially explosive areas!
Also note the following items which concern the Ex version:
• It must be installed in a housing that has the protection category IP20 or better according
to DIN IEC 60529. Additionally the magnesium component of the housing must not exceed 6%
as a higher magnesium component may increase the flammability and the Ex capability.
• If it is mounted in a housing which is isolated from the ground and can be charged to an
ignition capable level, then the housing must be electrostatically grounded when installed in
hazardous areas.
• It is approved for potentially explosive areas in zone 0, 1 and 2.
• It must be supplied by an intrinsically safe power supply unit or a Zener barrier placed
outside of the potentially explosive area.
CAUTION!
The manufacturer has developed the Non-Ex version for an operating temperature range of
-40...+85°C / -40...+185°F (the Ex version has the same ambient temperature range). To avoid
destruction or damage of the device, always assure that the operating temperature or the
ambient temperature does not exceed the permissible range and note the following items:
• If you operate the Ex version in potentially explosive areas, the ambient temperature also
depends on the temperature class. For detailed information refer to the section about the
temperature data for potentially explosive areas on page 42.
• The thermowell also transfers the process temperature to the transmitter housing. If the
process temperature is close to or exceeds the maximum temperature of the transmitter,
then the temperature in the transmitter housing can rise above the maximum permissible
temperature!
.book Page 14 Friday, November 9, 2012 3:50 PM