KROHNE OPTITEMP TCA Ex EN - Manual (Page 21)

INSTALLATION
3
21
OPTITEMP TRA/TCA
www.krohne.com 10/2010 - 4001087001 - Ex AD OPTITEMP TRA/TCA R02 en
Installation
3.1 Selecting the right thermometer and calculating limit values
Answering the above questions will help you deduce the following parameters and necessary
device properties:
• Whether or not you need a temperature transmitter
• Sensor output P
0
• Product temperature T
M
• Ambient temperature T
a
• Process connection temperature at the measuring point T
P
DANGER!
In order to prevent injury and material damage, always ensure that the process conditions do not
exceed the permitted limit values of the thermometer. Ask yourself the following questions
when planning a measuring point:
• What are the temperatures (ambient temperature, product temperature, process connection
temperature) at the measuring point?
• Do the process conditions necessitate heat-resistant feed lines?
• Which industrial thermometer model would you like to use with which process connection?
• Which type of sensor would you like to use?
INFORMATION!
The temperature at the process connection of an industrial thermometer depends on how the
device is installed. The diagram below shows possible installations (T
P
is the point at which the
temperature at the process connection is measured):
Possible installations
.book Page 21 Friday, November 19, 2010 2:23 PM