Current consumption during normal operation is <10 mA. The consumption increases during
the sensor self-diagnostics (autocalibration and sensor purge). Typical
current consumption
is 220 mA pulsed current.
The DMT143 can be powered by the MI70 indicator or the USB service cable. You
can plug in the MI7
0 indicator or the USB service cable to the digital port while
the transmitter is powered from the analog port.
The following figur
e shows a typical duty cycle during sensor purge at room temperature with
24 VDC supply voltage. Sensor purge current varies with supply voltage and operating
temperature. The peak value is the highest in the lowest temperature.
250 mA
Duration 50 s
Duration 5 s
0 mA
250 mA
0 mA
Figure 9 Example of Current Consumption During Purge
DMT143 User Guide M211435EN-J
26
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