Vega VEGAFLEX 62 Bedienungsanleitung

Level

Switching

Pressure

Level measurement

Guided microwave

Product Information

VEGAFLEX 62 – 4 … 20 mA/HART®

2VEGAFLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

VEGA

FLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Contents

1 Product description ..............................................................................4

1.1 Configuration ...................................................................................................... 4

1.2 Principle of operation .......................................................................................... 4

1.3 Adjustment ......................................................................................................... 4

2 Connection to power supply ................................................................5

2.1 Preparing the connection .................................................................................... 5

2.2 Wiring plans ....................................................................................................... 6

Supplement ................................................................................................ 8

Technical data ............................................................................................................ 8

Dimensions............................................................................................................... 13

4VEGAFLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Product description

1 Product description

1.1 Configuration

Scope of delivery

The scope of delivery encompasses:

• the VEGAFLEX 62 level sensor

• documentation

- operating instructions manual

- Ex-specific safety instructions (with Ex

versions) and, if necessary, further certifi-

cates.

Components

VEGAFLEX consists of the following com-

ponents:

• process connection with electrode

• housing with electronics

• housing cover with indicating and adjustment

module PLICSCOM (option)

1.2 Principle of operation

Area of application

VEGAFLEX 62 is a level senor with cable or rod

electrode for continuous level measurement.

It is designed for industrial use in all areas of

process technology and is suitable for the

measurement of liquids and solids.

Physical principle

High frequency microwave impulses are

guided along a steel cable or rod. The micro-

wave impulses are reflected when they reach

the product surface. The impulse running time

is processed by the integrated electronics and

outputted as distance.

Power supply

VEGAFLEX has a two-wire electronics

4 … 20 mA/HART®for power supply with

14 … 36 V DC.

1.3 Adjustment

VEGAFLEX can be adjusted with three different

media:

• the indicating and adjustment module

PLICSCOM

• the adjustment software acc. to FDT/DTM

standard, e.g. PACT

ware

TM and PC

• a HART®handheld.

Housing with

electronics

Housing cover with

adjustment module

PLICSCOM (option)

Process connection

Fig. 1:

Example of a VEGAFLEX 62 in cable version with

plastic housing

VEGA

FLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Connection to power supply

2 Connection to power supply

2.1 Preparing the connection

Take note of safety instructions for Ex

applications

In hazardous areas you should take

note of the appropriate regulations and

type approval certificates of the sen-

sors and power supply units. The sen-

sors must only be operated on intrinsically safe

circuits. The permissible electrical values are

stated in the certificate.

Select voltage supply

VEGAFLEX requires a supply voltage of

14 … 36 V DC. Power supply and current signal

are led via the same two-wire connection cable.

Provide a reliable separation between the exter-

nal energy source and the mains circuits acc. to

DIN VDE 0106 part 101. The VEGA power supply

units VEGATRENN 149AEx, VEGASTAB 690,

VEGADIS 371 as well as all VEGAMETs meet this

requirement. When using one of these instru-

ments, protection class II is ensured for

VEGAFLEX 62.

Bear in mind the following factors regarding

supply voltage:

• Reduction of the output voltage of the power

supply unit under nominal load

• Influence of additional instruments in the cir-

cuit (see load values in Technical data).

Anschlusskabel auswählenSelect connec-

tion cable

VEGAFLEX is connected with standard two-wire

cable. An outer diameter of 5 … 9 mm ensures

the seal effect of the cable entry.

If strong electromagnetic interference is ex-

pected, shielded cable is recommended. The

screen should be applied on both ends.

Select connection cable for Ex

applications

Take note of the corresponding installa-

tion regulations for Ex applications.

6VEGAFLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Connection to power supply

2.2 Wiring plans

Single chamber housing

Overview

4... 20mA

Display

Typ:

FX60H

Com.

12 5678

1) Connect cable screen here, connect ground terminal on

housing exterior to ground as prescribed (low-impedance).

The two terminals are galvanically connected.

Plastic Aluminium Stainless steel

Contact springs for adjust-

ment module PLICSCOM

Spring-loaded

terminals for

4…20 mA

connection

Spring-loaded

terminals for

connection of

VEGADIS 61

Plug connector

for VEGACON-

NECT 3

Ground terminal 1)

Fig. 2:

Overview of the three materials of the single chamber

housing

Top view, electronics and connection com-

partment

Fig. 3:

Top view of the electronics and connection compart-

ment

Wiring plan

Display

12 5678

PC with

PACT

ware

VEGADIS 61

Power

supply

14…36 V DC/

4…20 mA

Plug con-

nection

Fig. 4:

Wiring plan, single chamber housing

Double chamber housing

Overview

4... 20mA

Display

Typ:

FX60H

Com.

12 5678

Contact springs for adjustment

module PLICSCOM

Plug con-

nection for

VEGACON-

NECT 3

Internal connec-

tion cable to

connection

compartment

Electronics

compartment

Connection com-

partment

Cable entry (pressure-tight

with Exd)

Fig. 5:

Double chamber housing

Top view, electronics compartment

Fig. 6:

Top view of the electronics compartment of the dou-

ble chamber housing

VEGA

FLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Connection to power supply

PC with

PACT

ware

VEGA-

CON-

NECT 3

Power

supply

14…36 V DC/

4…20 mA

Plug con-

nection

1) Connect cable screen here, connect ground terminal on

housing exterior to ground as prescribed (low-impedance).

The two terminals are galvanically connected.

4... 20mA

Display

Com.

1 2

Contact springs for adjustment

module PLICSCOM

Spring-loaded

terminal for

4…20 mA con-

nection

Ground terminal 1)

Plug connec-

tion for

VEGACON-

NECT 3

Top view, connection compartment

Fig. 7:

Connection compartment, double chamber housing

Wiring plan

Fig. 8:

Wiring plan, double chamber housing

4... 20mA

1) The indicating and adjustment module PLICSCOM can be

used with Exd only in the electronics compartment.

2) Connect cable screen here, connect ground terminal on

housing exterior to ground as prescribed (low-impedance).

The two terminals are galvanically connected.

Power

supply

20…36 V DC/

4…20 mA

Spring-loaded

terminals for

4…20 mA con-

nection

Screen 2)

Ground terminal

Top view, connection compartment Exd 1)

Fig. 9:

Connection compartment, double chamber housing

Exd

Wiring plan Exd

Fig. 10:

Wiring plan, double chamber housing Exd

8VEGAFLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Supplement

Technical data

General data

Materials, wetted parts

– rod ø 16 mm 1.4435 (316L)/Hastelloy C22 2.4602

– cable ø 6 mm with gravity weight 1.4401

– seal Viton, Kalrez 6375, EPDM and plastic

– process fittings 1.4435 (316L) and PCTFE;

Hastelloy C22 2.4602 and PCTFE

Materials, non-wetted parts

– housing plastic PBT,

Alu-die casting powder-coated,

Stainless steel 1.4435 (316L)

– inspection window Polycarbonate (Makrolon)

– ground terminal Stainless steel 1.4435 (316L)

Basic weight

– plastic housing 1580 g

– Aluminium housing 1990 g

– Aluminium double chamber housing 2290 g

– stainless steel housing 2350 g

– rod (ø 16 mm) approx. 1660 g/m

– cable (ø 6 mm) approx. 170 g/m

– gravity weight (only with cable version) 730 g

Process conditions

Process pressure -1 … 40 bar (-100 ... 4000 kPa)

Process temperature

– Viton -30 … 150°C

– EPDM -40 … 150°C

– Kalrez 6375 -20 … 150°C

Output variable

Output signal 4 … 20 mA/HART®

Resolution 1,6 µA

Fault signal 22 mA; 20.5 mA; 3.6 mA (selectable)

Current limitation 22 mA

Integration time 1) 0 … 999 s, adjustable

Rise time 6 sec (ti : 0 s, 0 … 63 %)

1) The time required by the output signal to reach 63 % of the actual height after a jump of the input variable.

˚C

50 100 150

Ambient temperature

Product temperature

VEGA

FLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Supplement

Ambient conditions

Ambient temperature -40 … 80°C

– with PLICSCOM (readability) -20 … 80°C

Storage and transport temperature -40 … 85°C

Max. tensile load

– cable-ø 6 mm 30 KN

Lateral load (rod) 30 Nm

Tensile load

Dependent on the vessel diameter and the level, different tensile forces are acting in solids. In

the following charts you will see the values for some typical solids.

00 5 10 15 20 25 30 35

Cable length (m) Cable length (m)

Tensile force, 6 mm cable (kN)

Cereals Sand

Plastic granules Cement

Metal silo with smooth walls

diameter 12 m

diameter 9 m

diameter 6 m

diameter 3 m

10 VEGAFLEX 62 – 4 … 20 mA/HART®

7822-EN-030715

Supplement

100%

150

500 - 6.000

100%

300100150

1.000 - 60.000

Fig. 11:

Measuring ranges of VEGAFLEX 62

Characteristics

Min. span

between full and empty adjustment 10 mm

Min. dielectric value εr > 1.7

Sensor length

Rod 500 mm … 6 m

– blocked distance top 150 mm

– blocked distance bottom 0 mm

Cable 1 m … 60 m

– blocked distance top 300 mm

– blocked distance bottom 250 mm

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