Electrical connections – KROHNE OPTITEMP TT 11 C-R EN User Manual
Page 18
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ELECTRICAL CONNECTIONS
18
OPTITEMP TT 11 C/R
www.krohne.com
05/2011 - 4000752902 - MA OPTITEMP TT 11 C/R R02 en
4.3.1 In-head transmitter
DANGER!
Neither operate this transmitter in potentially explosive areas, nor connect it to a sensor located
in a potentially explosive area! Otherwise the transmitter might cause an explosion that can
result in fatal injuries!
INFORMATION!
The transmitter has a polarity protection. Connecting the power supply with a wrong polarity will
not damage the transmitter.
Figure 4-3: Connection diagram of the in-head transmitter (3-wire configuration)
1 Terminals for input signal (1, 2 and 3)
2 Potentiometer for zero point setting
3 Potentiometer for measuring span setting
4 Power supply (15...30 VDC), here on terminals 5 and 6 for 3-wire configuration
5 Solder pads
6 Load resistance
7 Output signal, terminals 4 and 5 (0...10 V)
Figure 4-4: Connection diagram of the in-head transmitter (4-wire configuration)
1 Terminals for input signal (1, 2 and 3)
2 Potentiometer for zero point setting
3 Potentiometer for measuring span setting
4 Power supply (15...30 VDC), here on terminals 6 and 7for 4-wire configuration (offers a higher accuracy than the 3-
wire configuration)
5 Solder pads
6 Load resistance
7 Output signal, terminals 4 and 5 (0...10 V)
.book Page 18 Friday, May 6, 2011 10:52 AM