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2 principle of operation – VEGA VEGABAR 51 4 … 20 mA_HART User Manual

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3 Product description

VEGABAR 51 • 4 … 20 mA/HART

36713-EN-130321

2

1

13

10

5

4

3

6
7
8
9

11

12

14

Fig. 2: Layout of the type label (example)
1 Instrument type

2 Product code

3 Approvals

4 Measuring range

5 Process pressure

6 Process temperature

7 Electronics, voltage supply

8 Protection rating

9 Order number

10 Serial number

11 Data-Matrix-Code for Smartphone-App

12 Material process seal

13 ID numbers, instrument documentation

14 Notified authority for CE marking

With the serial number, you can access the delivery data of the instru-

ment via www.vega.com, "VEGA Tools" and "serial number search".

In addition to the type label outside, you can also find the serial num-

ber on the inside of the instrument.

Instruments in the version "Oil and grease-free for oxygen applica-

tions" or "Oil, grease and silicone-free for lacquers" are equipped with

an optional label. The optional label contains references to the oil,

grease and silicone-free parts of the instrument.

This operating instructions manual applies to the following instrument

versions:

Software from 3.82

3.2 Principle of operation

The VEGABAR 51 is a pressure transmitter with chemical seal for

pressure measurement of highly corrosive and hot liquids.

The process pressure acts on the sensor element via the stainless

steel diaphragm and an internal transmission liquid. This causes a

resistance change which is converted into a corresponding output

signal and outputted as a measured value. With measuring ranges

up to 16 bar a pieoresistive sensor element is used, with measuring

ranges from 25 bar a strain gauge (DMS) sensor element.

Optional label

Scope of this operating

instructions manual

Application area

Functional principle