VEGA D85 Hydrostatic pressure transmitter - Manual (Page 4)

4 Pressure transmitter D85
Product description
1 Product description
1.1 Function and configuration
The pressure transmitter D85 is an efficient
instrument for hydrostatic level measurement.
A dry metallic-capacitive measuring cell is
used as pressure sensor element.
Pressure transmitter D85
Measuring cell: dry, metallic-capacitive
Diaphragm: flush, stainless steel
(Duratherm 600)
Series: flanged version
Standard application: All kind of level
measurements, best suited for food
processing and pharmaceutical industries
and for product temperatures up to 200°C
The hydrostatic pressure of the medium
effects a capacitance change in the
measuring cell. This capacitance change is
detected by an ASIC (Application Specific
Integrated Circuit) and converted into a
pressure-proportional signal by the inte-
grated electronic module with microcontroller.
Precise, high-resolution digital processing of
measurement data ensures excellent techni-
cal data.
To improve reliability, the functionality of im-
portant electronic components is continu-
ously checked, and internal parameters such
as sensor value, temperature and operating
voltage are closely monitored.
Output signal
The output signal is transferred as a digital or
analogue signal from the pressure transmitter
to the signal conditioning instrument:
• analogue output signal
- unstandardised (in conjunction with
VEGA signal conditioning instrument)
- 4 … 20 mA standardised
• digital output signal (VBUS) for connection
to a digital VEGA signal conditioning instru-
ment (VEGAMET 514V, 515V or VEGALOG
571)