Vega D86_D87 Hydrostatic pressure transmitters Bedienungsanleitung PDF herunterladen (Seite 4)

4 Pressure transmitters D86/D87

Product description

1 Product description

1.1 Function and configuration

Pressure transmitters D86 and D87 are in-

struments for hydrostatic level measurement.

Pressure transmitter D86

Measuring cell: dry, ceramic-capacitive

Diaphragm: flush, sapphire-ceramic

®

Series: suspension version

Standard application: Level and gauge

measurements in water/sewage water,

flumes, basins, deep wells, vessels and

tanks

Pressure transmitter D87

Measuring cell: dry, metallic-capacitive

Diaphragm: Duratherm 600

Series: suspension version

Standard application: Level and gauge

measurements in water/sewage water,

flumes, basins, deep wells, vessels and

tanks

The pressure effects a capacitance change

on the measuring cell. This capacitance

change is detected by an ASIC (Application

Specific Integrated Circuit) and converted

into a pressure-proportional signal by the

integrated electronic 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

to a digital VEGA signal conditioning instru-

ment (VEGAMET 514V, 515V or VEGALOG

571)

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