VEGA D81 METEC Hydrostatic pressure transmitter - Manual (Page 4)

4 Pressure transmitter D81 METEC ®
Product description
1 Product description
1.1 Function and configuration
Pressure transmitter D81 METEC ® is a pow-
erful instrument for hydrostatic level meas-
urement. A METEC
® measuring cell is used
as the measuring device. This cell consists of
a ceramic-capacitive sensor and a specially
adapted isolating diaphragm.
Pressure transmitter D81 METEC ®
Measuring cell: METEC ®
Diaphragm: flush, Hastelloy C276/1.4435
Series: flange version
Standard application: all types of level meas-
urements, best suited for food processing
and pharmaceutical industries.
The hydrostatic pressure of the product
causes a diaphragm movement in the ce-
ramic-capacitive CERTEC
® measuring cell via
a temperature-compensated isolating system
consisting of stainless steel body, Hastelloy
diaphragm and medical white oil. This ca-
pacitance change is detected by an ASIC
(Application Specific Integrated Circuit) and
converted into a pressure-proportional signal
by the integrated electronics module with
microcontroller. Precise, high-resolution dig-
ital processing of measurement data ensures
excellent technical 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
of a digital VEGA signal conditioning instru-
ment (VEGAMET 514V, 515V or VEGALOG
571)
CERTEC
®