ROTRONIC PF4 - Manual (Page 6)

E-M-PF4-V1_00
Rotronic AG
Bassersdorf, Switzerland
Document Code Unit
PF4 Differential Pressure Transmitter:
Instruction Manual
Instruction Manual
Document Type
Page 6 of 54
Document Title
© 2014; Rotronic AG E-M-PF4-V1_00
3 General Description
3.1 Power Supply
The PF4 is only available as three-wire version without galvanic isolation. For configuration purposes, the device
can also be supplied with power via the service interface (Mini-USB port inside housing). During configuration
with the service interface there is insufficient power to run the differential pressure sensor to its most accurate
performance levels. The USB service connector should be used only for configuration purposes.
3.1.1 Power Supply / Current Consumption
Power supply specifications for the PF4:
Operating Voltage Current Consumption
15…40 VDC <70 mA / <150 mA (with Ethernet interface)
14…28 VAC – 50/60 Hz <70 mA / <450 mA (with Ethernet interface)