Figure 6 DMT143 Digital and Analog Connectors
2
4
1 3
12 ... 28 VDC
RS-485 +
RS-485 -
GND
1
2
3
4
＋
－
Figure 7 Wiring the Digital Connector
＋
－
1
3
4
2
mA
＋
－
1
3
4
2
V
18 ... 28 VDC
12 ... 28 VDC
2
4
1 3
＋
－
＋
－
Figure 8 Wiring the Analog Connector
4.4.1 Power Supply Requirements
The minimum supply voltage required by the DMT143 transmitter depends on the analog
output type that is used:
• For voltage output: 12 ... 28 VDC.
• For current output: 18 ... 28 VDC. The maximum load is 500 Ω.
The power supply should maintain the voltage for all load conditions.
If measuring in pressures above 20 bar
a
(290 psi
a
) or temperatures below 0 °C, the supply
voltage must be 24 ... 28 VDC.
Chapter 4 – Installation
25
To Next Page
Loading...
