ABUS Technologies DP Series Smart Pressure Transmitter - Manual (Page 5)

ABUS TECHNOLOGIES INC.
M94
5
Description
2.2 Working Principle
As indicated in the working principle diagram, the outside pressure or differential pressure
will cause some change in the sensor capacitance value. Through the digital signal conversion, it
will change into the frequency signal, which is sent to the microprocessor. After the calculation by
microprocessor, a current control signal will be output to the current control circuit, converted into
analogue 4-20mA current output. Meanwhile, the microprocessor is responsible for the
interactive and other actions (display and setting). The communication port used for digital
communication needs the special port of our company. HART module will realize the transmitter
HART communication.
1 Cover 14 Cover lock bolt
2 O-ring 15 Sensor
3 Wiring terminals cover 16 O-ring
4 Mounting bolts of circuit board 17 O-ring
5
Thunder-proof wiring circuit
board
18 Position code plate
6 Name plate 19 Zero alignment plate
7 Housing body 20 Housing body lockup bolt
8 Meter head 21 Parallel wires
9 Mounting bolts of meter head 22 Circuit board
10 Meter head cover 23 Nut M10
11 Drain/ vent valve 24
Integrated 3-valve group
(optional)
12 Template 25 Welded connector (optional)
13 Bolts M10 26 Flange (optional)