KROHNE OPTITEMP TT 11 C-R EN - Manual (Page 28)

5
OPERATION
28
OPTITEMP TT 11 C/R
www.krohne.com 05/2011 - 4000752902 - MA OPTITEMP TT 11 C/R R02 en
• Connect the power supply and the precision measuring device for current measurement
according to the connection diagram in the chapter "Electrical connections" (the typical power
supply is 24 VDC)..
• Connect the resistance decade according to the connection diagram in the chapter "Electrical
connections".
• Set an input signal that delivers an output signal of 5 V.
• Wait circa 15 minutes and check the stability of the output signal afterwards .Only if the output
signal is stable then, the transmitter is ready for calibration and you can go to the next step!
• Use the resistance decade to set an input signal T
in
that corresponds to the selected lower
measuring range value (e.g. 100 Ω for a measuring span from 0...+100°C / +32...212°F).
• Use the potentiometer for zero point setting to set exactly a voltage of U
out
= 0 V (refer to the
drawing above).
• Use the resistance decade to set an input signal T
in
that corresponds to the selected upper
measuring range value (e.g. 138.5 Ω for a measuring span from 0...+100°C / +32...212°F).
• Use the potentiometer for the measuring span setting to set exactly a voltage of U
out
= 10 VDC.
• Repeat the steps 5 till 8 until all of the signals are set exactly.
• Secure the potentiometers with varnish.
i The calibration is complete now.
INFORMATION!
The following calibration procedure is valid not only for the rail-mount transmitter, but also for
the in-head transmitter.
.book Page 28 Friday, May 6, 2011 10:52 AM