VEGA BAR44 User Manual

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Operating Instructions

VEGABAR 44 (HART®)

WE'VE GOT

ABILITY

OPERATE t

i ZERO SPAN

123 5678

VEGADIS 10

4...20mA

E12

123 5678

VEGADIS 10

4...20mA

E12

AM10

Contents

Safety information ........................................................................ 2

Note Ex area ................................................................................ 2

1 Product description

1.1 Function and configuration .................................................. 4

1.2 Self-monitoring ..................................................................... 4

1.3 Technical data ....................................................................... 5

1.4 Approvals and certificates .................................................. 9

1.5 Dimensions ......................................................................... 10

2 Mounting

2.1 Mounting instructions ......................................................... 12

2.2 Compensation of the atmospheric pressure ................... 12

3 Electrical connection

3.1 Connection instructions ..................................................... 12

3.2 Connection diagram .......................................................... 13

3.3 Connection examples ........................................................ 14

Contents

Safety information

Please read this manual carefully, and also take note of country-specific installation standards (e.g. the VDE regulations in Germany) as well as all prevailing safety regulations and accident prevention rules. For safety and warranty reasons, any internal work on the instruments, apart from that involved in normal installation and electrical connection, must be carried out only by qualified VEGA personnel.

2 VEGABAR 44 (HART®)

Note Ex area

Please note the attached safety instructions containing important information on installation and operation in Ex areas. These safety instructions are part of the operating instructions and come with the Ex approved instruments.

Contents

4 Setup

4.1 Indicating module ............................................................... 15

4.2 Setup with module

"Adjustment of the basic functions“ .................................. 15

4.3 Setup with module

"Menu-driven adjustment with additional functions“ ........ 17

4.4 Setup with adjustment software

VEGA Visual Operating (VVO) ......................................... 22

4.5 Setup with HART® handheld ............................................. 30

5 Diagnostics

5.1 Maintenance ....................................................................... 36

5.2 Failure rectification ............................................................. 36

6 Instrument modification

6.1 Exchange of adjustment modules .................................... 38

6.2 Exchange of electronics .................................................... 39

6.3 Exchange of the hygienic form seal on VEGABAR 44 .... 40

VEGABAR 44 (HART®) 3

1 Product description

Product description

1.1 Function and configuration

VEGABAR 44 process pressure transmitters are efficient instruments for process pressure measurement. As pressure sensor element, the dry ceramic-capacitive measuring cell CERTEC® is used. The process pressure causes a capacitance change within the measuring cell via the diaphragm. This capacitance change is detected by an ASIC (Application specific integrated circuit) and converted into a pressure-proportional signal by the integrated sensor electronics with microcontroller. Precise, high-resolution digital processing of measured data ensures excellent technical data.

The electronics module is powered by a separate VEGA signal conditioning instrument, a stabilised power supply unit or a PLC (active input). After the adjustment, a standardised 4 … 20 mA current signal is made available which can be displayed (e.g. in PLC systems) or further processed.

For carrying out adjustment, the following alternatives are available:

- adjustment module directly on VEGABAR

- adjustment module in external housing (VEGADIS 10)

- via PC with adjustment software VEGA Visual Operating (VVO)

- with HART® handheld

1.2 Self-monitoring

To improve reliability, the functionality of important electronic components is constantly checked, and internal parameters such as sensor value, temperature and operating voltage are closely monitored.

VEGABAR 40 with ceramic CERTEC® measuring cell offers the advantage of continuous self-monitoring. The measuring and reference capacitances of the measuring cell constitute a predefined ratio over the entire measuring range. Any deviation from these data is a reliable indicator of a malfunction of the measuring cell.

If errors or malfunctions are detected during these routines, the fault signal is triggered via the 4 … 20 mA output (current jump to

3.6 mA or 22 mA).

4 VEGABAR 44 (HART®)

Product description

1.3 T echnical data

Mechanical data

Materials, wetted parts

Process connection brass 2.041, stainless steel 1.4571 Diaphragm saphire-ceramic® (99.9 % Oxide ceramic) Seal, measuring cell Viton, EPDM, Hifluour, Kalrez

Materials, non-wetted parts

Housing high resistance plastic PBT (Polyester)

- optional Alu-die casting, powder-coated Ground terminal stainless steel 1.4305 Indicating module window Lexan

Weight

VEGABAR approx. 0.8 kg (depending on process fitting)

Adjustment and indicating elements

Adjustment of the basic functions 2 keys, 1 rotary-type switch Menu-driven adjustment with additional functions

- adjustment elements 4 keys

- indicating elements DOT-matrix display, 3 lines with 7 figures each Indicating module LC display with

- bar graph (20 segments)

- digital value (4 digits)

- tendency indicators for rising or falling values

VEGABAR 44 (HART®) 5

Product description

Nominal measuring ra nge

Gauge pressure resistance

Low pressu re resistance

Gauge pressure

0…0,1 bar / 0…10 kPa 15 bar / 1 500 kPa -0,2 bar / -20 kPa 0…0,2 bar / 0…20 kPa 20 bar / 2 000 kPa -0,4 bar / -40 kPa 0…0,4 bar / 0…40 kPa 30 bar / 3 000 kPa -0,8 bar / -80 kPa 0…1,0 bar / 0…100 kPa 35 bar / 3 500 kPa -1,0 bar / -100 kPa 0…2,5 bar / 0…250 kPa 50 bar / 5 000 kPa -1,0 bar / -100 kPa 0…5,0 bar / 0…500 kPa 65 bar / 6 500 kPa -1,0 bar / -100 kPa 0…10,0 bar / 0…1 000 kPa 90 bar / 9 000 kPa -1,0 bar / -100 kPa 0…20,0 bar / 0…2 000 kPa 130 bar / 13 000 kPa -1,0 bar / -100 k Pa 0…40,0 bar / 0…4 000 kPa 200 bar / 20 000 kPa -1,0 bar / -100 k Pa 0…60,0 bar / 0…6 000 kPa 300 bar / 30 000 kPa -1,0 bar / -100 k Pa

-0,05…+0,05 bar / -5…+5 kPa 15 bar / 1 500 kPa -0,2 bar / -20 kPa

-0,1…+0,1 bar / -10…+10 kPa 20 bar / 2 000 kPa -0,4 bar / -40 kPa

-0,2…+0,2 bar / -20…+20 kPa 30 bar / 3 000 kPa -0,8 bar / -80 kPa

-0,5…+0,5 bar / -50…+50 kPa 35 bar / 3 500 kPa -1,0 bar / -100 kPa

-1,0…0,0 bar / -100…0 kPa 35 bar / 3 500 kPa -1,0 bar / -100 kPa

-1,0…+1,5 bar / -100…+150 kPa 50 bar /5 000 kPa -1,0 bar / -100 k Pa

-1,0…+4,0 bar / -100…+400 kPa 65 bar / 6 500 kPa -1,0 bar / -100 kPa

-1,0…+10,0 bar / -100…+1 000 kPa 90 bar / 9 000 kPa -1,0 bar / -100 k Pa

-1,0…+20,0 bar / -100…+2 000 kPa 130 bar / 13 000 k Pa -1,0 bar / -100 kPa

-1,0 …+40,0 bar / -100…+4 000 kPa 200 bar / 20 000 kPa -1,0 bar / -100 kPa

-1,0…+60,0 bar / -100…+6 000 kPa 300 bar / 30 000 k Pa -1,0 bar / -100 kPa

Absolute pressure

0…1,0 bar / 0…100 kPa 35 bar / 3 500 kPa 0…2,5 bar / 0…250 kPa 50 bar / 5 000 kPa 0…5,0 bar / 0 …500 kPa 65 bar / 6 500 kPa 0…10,0 bar / 0…1 000 kPa 90 bar / 9 000 k Pa 0…20,0 bar / 0…2 000 kPa 130 bar / 13 000 kPa 0…40,0 bar / 0…4 000 kPa 200 bar / 20 000 kPa 0…60,0 bar / 0…6 000 kPa 300 bar / 30 000 kPa

6 VEGABAR 44 (HART®)

Product description

Electrical data

Adjustment ranges

Zero adjustable from -20 … +95 % of nominal range Span adjustable from 3.3 … 120 % of nominal range

Supply and signal circuit

Supply voltage 12 … 36 V DC Exd version (pressure-tight encapsulation) 18 … 36 V DC Permissible residual ripple U

- at 500 Hz … 10 kHz U Output signal

- range 3.8 … 20.5 mA

- resolution 6 µA Current limiting approx. 22 mA Fault signal 22 mA (3.6 mA) Integration time 0 … 10 s adjustable Rise time 85 ms (ti = 0 sec; 0 – 63 %) Connection cable 2-wire Max. permissible load dependent on the supply voltage

≤ 1 V

≤ 10 mV

(see load diagram)

1000

750

in Ohm

Ltotal

500 250

Load R

18 24 30 36

Voltage of the external energy UH in Volts

Display and adjustment circuit

For connection to VEGADIS 10 and/or indicating module Data transmission digital Connection cable 4-wire (standard cable) Max. cable length 25 m

Connection

Cable entry M20 x 1.5 (for cable-ø 5 … 10 mm) Screw terminals for conductor cross sections of up to 2.5 mm

Protective measures

Protection

IP 65 Protection class III Overvoltage category III

Use of a suitable seal for the cable in the PG is necessary for maintaining the housing protection. If the seal used does not fit the cable, it should be replaced by a suitable one.

VEGABAR 44 (HART®) 7

Product description

Accuracy (similar to DIN 16 086, DIN V 19 259 - 1 and IEC 770)

Deviation

Reference conditions (acc. to IEC 770)

- temperature 15°C … 35°C

- rel. humidity 45 % … 75 %

- air pressure 860 mbar … 1060 mbar/86 kPa … 106 kPa Determination of characteristics limit point adjustment acc. to DIN 16 086 Characteristics linear Deviation in characteristics incl. hysteresis and repeatability

- Turn Down 1 : 1 < 0.25 % with accuracy class 0.25

- Turn Down up to 1 : 5 typ. < 0.3 % with accuracy class 0.25

- Turn Down up to 1 : 10 typ. < 0.4 % with accuracy class 0.25

Influence of the ambient temperature

Average temperature coefficient of the zero signal

- Turn Down 1 : 1 < 0.15 %/10 K with accuracy class 0.25

- Turn Down up to 1 : 5 typ. < 0.225 %/10 K with accuracy class 0.25

- Turn Down up to 1 : 10 typ. < 0.3 %/10 K with accuracy class 0.25

< 0.1 % with accuracy class 0.1

typ. < 0.1 % with accuracy class 0.1

typ. < 0.2 % with accuracy class 0.1

< 0.05 %/10 K with accuracy class 0.1

typ. < 0.075 %/10 K with accuracy class 0.1

typ. < 0.1 %/10 K with accuracy class 0.1

Long-term stability

Long-term drift of the zero signal

1) 3)

< 0.1 % per 2 years

Other actuating variables

Calibration position upright, diaphragm points downwards Influence of the mounting position < 0.2 mbar/20 Pa Vibration resistance mechanical vibrations with 4 g and

5 … 100 Hz, tested acc. to the regulations of German Lloyd GL-characteristics 2

Relating to the nominal measuring range.

In the compensated temperature range of 0°C … +80°C, reference temperature 20°C.

Acc. to IEC 770, point 6.1.2 relating to the nominal measuring range.

8 VEGABAR 44 (HART®)

Product description

Operating conditions

Ambient conditions

Ambient temperature -40°C … +85°C

- with indicating module -20°C … +70°C Storage and transport temperature -40°C … +85°C Product temperature, dependent on the seal material of the measuring cell

- Viton -20°C … +100°C

- EPDM -40°C … +100°C

- Kalrez 0°C … +100°C

1.4 Approvals and certificates

Approvals

- Ex Zone 2

- StEx Zone 10

- Ship approval

- CENELEC EEx ia IIC

- ATEX II 1G EEx ia IIC

- ATEX II 2G EExd ia IIC

If the use of approved instruments is required for certain applications, the relevant official documents (test reports, test certificates and conformity certificates) must be observed. These are supplied with the respective instrument.

CE conformity

VEGABAR 40 corresponds to the requirements of EMC (89/336/EWG) and NSR (73/23/EWG). Conformity has been judged acc. to the following standards: EMC Emission EN 50 081 - 1: 1992

NSR EN 61 010 - 1: 1993

Susceptibility EN 50 082 - 2: 1995

NAMUR regulations

Full compliance with the NAMUR regulations NE 21 and NE 43.

VEGABAR 44 (HART®) 9

1.5 Dimensions

Housing without indicating module with indicating module

~76

Pg 13,5

Product description

Version plastic PBT

Ground connection

~76

Version Alu-die casting

M20x1,5

Ground connection

156

~76

Version Alu-die casting in EExd

Ground connection

½" NPT

10 VEGABAR 44 (HART®)

Product description

Process fitting

SW 60

34,5

ø 49,6

G 1½ A

ø 60

ø 49,6

SW 46

ø 90

ø 49,6

SW 46

ø 92

ø 49,6

SW 60

24,5

G 1½ A

ø 55

49,5

ø 49,6

SW 46

ø 78

ø 49,6

SW 46

ø 78

ø 64

ø 49,6

SW 60

SW 46

ø 49,6

1½ " NPT

ø 49,6

ø 64

ø 49,6

ø 65,8

ø 105

51,5

ø 49,6

SW 46

M44 x 1,25

BA/BB

ø 49,6

SW 46

ø 84

ø 49,6

SW 46

ø 100

20,5

51,5

ø 100

ø 165

VEGABAR 44 (HART®) 11

Mounting, Electrical connection

2 Mounting

2.1 Mounting instructions

VEGABAR can be mounted in any position. Cable entries must point downwards to avoid moisture ingress. For this purpose, the housing can be rotated by 330° in relation to the mounting part.

A seal, appropriate for connection, must be used for mounting. This seal is either supplied with VEGABAR or must be provided by the customer.

2.2 Compensation of the atmospheric pressure

On instruments for gauge pressure measurement, the atmospheric pressure is compensated via a breather facility integrated in the housing.

3 Electrical connection

3.1 Connection instructions

The electronics in VEGABAR 44 requires a supply voltage of 12 … 36 V DC. It is provided in two-wire technology, i.e. supply voltage and current signal are led to the terminals via the same two-wire connection cable.

This external energy is provided via a separate power supply unit:

- power supply unit, e.g. VEGASTAB 690

- processing unit with integrated DC current source (e.g. active PLC input)

- VEGAMET or VEGADIS 371

Make sure that the external energy source is reliably separated from the mains circuits acc. to DIN VDE 0106, part 101. The abovementioned VEGA instruments meet this requirement, and protection class II is therefore ensured.

The external energy source must supply a terminal voltage of at least 12 V to the transmitter. The actual terminal voltage on the transmitter depends on the following factors:

- output voltage of the external energy source under nominal load.

- electrical resistances of the connected instruments in the circuit (see Connected instruments, load resistor).

12 VEGABAR 44 (HART®)

Electrical connection

Note the following instructions for electrical connection:

- Connection must be made according to the specific installation standards (e.g. in Germany acc. to the VDE regulations).

- Terminal voltage must not exceed 36 V, to avoid damage to the electronics.

- Electrical connection must have a preventative measure against inadvertent polarity reversal.

- The wiring between VEGABAR and the power supply can be carried out using standard two-wire cable.

- Screened cable is recommended, if strong electromagnetic interference is to be expected. The shielding must be grounded at both sensor ends. Please note the installation regulations for mounting in Ex areas.

- If overvoltages are expected, we recommend the installation of VEGA overvoltage arresters.

- In the cable connection, a seal must be used which fits the cable.

- For instrument version EExd (pressuretight encapsulation) screened cable must be used for the instrument connection. Note the installation regulations.

3.2 Connection diagram

Note:

An ammeter for local control of the output current can be connected to terminals 1 and 3. This measurement can be made during operation without interrupting current on the supply cable.

VEGABAR with indicating module

Ammeter for local control

Function

ground

Plug connection

321

8765

Indicating module

VEGADIS 10 with indicating module

0 - 20 bar

–+

Supply voltage 12 … 36 V DC 4 … 20 mA

If screened cable is used, the screening should be grounded in the terminal compartment and the ground terminal on the outside of the housing must be grounded according to regulations. The terminals are connected to each other in the housing.

VEGABAR 44 (HART®) 13

0 - 20 bar

3.3 Connection examples

Supply via power supply unit

Processing is carried out using an indicating instrument.

Ammeter for local control

+ – –

1 2 3

VEGABAR terminals

Supply via a PLC with active input circuit

Processing is carried out via a PLC with active input circuit.

Ammeter for local control

analogue / digital indicating instrument

Power supply unit

–

Electrical connection

+ – –

1 2 3

VEGABAR terminals

PLC

–

PLC

14 VEGABAR 44 (HART®)

Setup

4 Setup

Electrical connection and setup can be simplified by temporarily mounting the cover or the indicating module on VEGABAR laterally or downwardly displaced.

VEGABAR

+ 4 ¼ 20 mA

12 ¼ 36 V DC E12

87654321

DISPLAY

VEGADIS 10

Tighten screws lightly

Indicating module

4.1 Indicating module

Digital value

- 4 digits and decimal point

- basic function module: indicates a permanent bar measurement range

- menu-driven module: allows individual scaling of bar measurement range

The connection is made via a plug connection acc. to the scheme in the "Electrical connection“ section.

4.2 Setup with module "Adjustment of the basic functions“

Adjustment elements

Rotary switch: Select requested function

Key +: Change

OPERATE t

ZERO SPAN

Adjustment system

• Select the required function with the rotary

switch.

• Change the value with the "+“ and "–“ keys.

• Reset rotary switch to OPERATE, the ad-

justed values are transferred to the EEPROM memory. They remain there even in case of voltage drop.

Adjustment

For adjustment of zero and span, an ammeter must be connected to terminals 1 and 3. The measured value is identical to the output current.

value (increase

Key –: Change value (decrease)

Tendency indication

Bar graph

(e.g. process pressure zero or vessel empty)

• Set rotary switch to zero.

• By pushing the "+“ and "–“ keys simultane-

ously, the current jumps directly to 4 mA or

1 Adjustment of zero

Digital value

set it to 4 mA by pushing the "+“ and "–“ keys.

Adjustment range of zero:

-20 % … +95 % of nominal measuring range

(corresponds to turn up of up to +95 %)

VEGABAR 44 (HART®) 15

Setup

2 Adjustment of span

(e.g. process pressure or level at maximum)

• Set rotary switch to span.

• By pushing the "+“ and "–“ keys simultaneously, the current jumps directly to 20 mA or set it to 20 mA by pushing the "+“ and "– “ keys.

Adjustment range of span:

3.3 % … 120 % of the nominal measuring

range (corresponds to turn down 1 : 30)

Note:

- A modification of zero does not influence the span, i.e. the final value of the measuring range will simply be shifted.

- It is also possible to adjust currents for partial fillings or partial pressures, e.g. 8 mA for 25 % and 16 mA for 75 %. VEGABAR automatically calculates the current values for 0 % or 100 % (only possible with ≥ 3.3 %).

Integration time

An integration time ti of 0 … 10 s can be adjusted for damping pressure shocks.

Procedure

• Set rotary switch to ti.

• By pushing the "–“ key 10 times, make sure that the integration time is set to 0 s.

• Push the "+“ key once for every 1 s integration time required.

The integration time is the time required by the current output signal to reach 90 % of the actual level after a sudden change of the process pressure.

16 VEGABAR 44 (HART®)

Setup

4.3 Setup with module "Menu-driven adjustment with additional functions“

Adjustment elements

Display of:

- measured value

- functions in menu

▼ Jump to the menu below

with OK

▲ Jump to the menu above

with OK

Depending on parameter: change value (increase) or choose from list

OPERATE

3.00

mbar

Depending on parameter: change value (decrease) or choose from list

–>

–

The adjustment with the multifunctional module is menu-orientated and is made via the four keys in conjunction with the text display. The move from the measured value indication to the main menu is made with the "OK“ key. Use the "→“ key to change within a menu from one menu item to another.

Branching points

A branching point is shown by the ▼ symbol and enables a jump to the menu below with the "OK“ key. In this menu you can find parameters which are linked (possibly in other submenus).

Choose menu item or interrupt input

Acc. to the menu item, save the adjusted value or change the menu level

Reset

A reset is shown by the ▲ symbol and enables a jump back to the menu above with the "OK“ key.

Automatic jump back to measured value indication is triggered 60 minutes after the last key push.

Parameters have no ▲ or ▼ symbol. The value of the parameters can be modified with the "+“ and "–“ keys or chosen from a list. When these keys are pushed once, the value flashes first. When pushed again, the value is modified. The modified value can be saved with the "OK“ key. Push the "→“ key to interrupt input (without storing the modification).

Certain parameters can be displayed but not modified.

VEGABAR 44 (HART®) 17

Menu schematic

Setup

Operate

0.2

mbar

Ad-

just-

ment

Adjust

with

press.

Measured value indication

Calcu-

lation

Adjust

without

press.

Unit

0.0

mbar

psi kPa

Output

Unit

0.0

mbar

psi kPa % Scal. mA

Current

output

4-20mA

20-4mA

Scaling

indica-

tion

0%=

Fault

signal

22mA

Escape

3.6mA

Escape

The scaling can be carried out only if in the menu item "unit“ the option "scal“ had been previously chosen.

100%=

1000

Decimal

point

888.8

Escape

On sensors with a measuring range < 1 bar the unit

mbar

can be chosen instead of

Offset

correc-

tion

Offset

corr. OK?

Zero

0.0

mbar

bar

Span

100.0

mbar

Escape

Simula-

tion

Sim.

xx.x

mbar

Sensor unpres-

surized?

Zero

4.000

Span

4.000

Escape

18 VEGABAR 44 (HART®)

Setup

Addi-

tional

funct.

Sensor

data

Escape

Lan-

guage

Lan-

guage

English

Reset

Reset OK ?

Escape

Franc. Ital. Español Deutsch

Fabr.-

Date

49.98

The values indicated here (min. and max. values) can be set to the present value by pushing the "+“ and "–“ keys simultaneously.

P min

-0.3

mbar

Use the arrow key to move to the right in the menu plan.

Reset

Now!

OK ?

P max

150

mbar

1) 1) 1)

Temp.

30.7

°C

T min

23.5

°C

T max

36.2

°C

Diagno-

stic no.

- - -

Escape

Adjust

with

press.

Escape

Scaling

indica-

tion

In the menu items with these symbols, you can move to the top or bottom with the "OK“ key.

Light grey menu items are only displayed if necessary (dependent on the instrument version).

Span

100.0

mbar

Lan-

guage

English

Franc. Ital. Español

White letters indicate the parameters which can be modified with the "+“ or "–“ key and saved with the "OK“ key.

Sensor or measured value information which cannot be modified in these positions are in italics.

List These options can be selected with the "+“ or "–“ key and saved with the "OK“ key.

Deutsch

VEGABAR 44 (HART®) 19

Setup

Adjustment taking the current pressure into account (live adjustment)

The live adjustment comprises two steps: 1 Adjustment of zero 2 Adjustment of span

The appropriate output current is displayed via the DOT-matrix.

1 Adjustment of zero

(e.g. process pressure zero or vessel empty)

Set the current value to 4.000 mA

Zero

4,000

with the "+“ or "–“ keys. Then push

the "OK“ key.

2 Adjustment of span

(e.g. process pressure or level at maximum)

Set the current value to 20.000 mA.

Span

with the "+“ or "–“ keys. Then push

20,000

the "OK“ key.

Note:

- A modification of zero does not influence the adjusted span, i.e. the final value of the measuring range will simply be shifted.

- Push "+“ and "-” simultaneously for standard adjustment of zero/span. The value jumps directly to 4 mA/20 mA.

- In the case of a high turn down the "+“ and "-“ key should generally be pressed simultaneously (due to resolution).

- By pushing the "+“ or "–“ keys individually, the current output remains at the last value, it takes on the adjusted value only after storing with the "OK“ key.

Adjustment without taking the current pressure into account (dry adjustment)

Adjustment without pressure comprises four steps: 1 Selection of the unit in which the adjustment

is to be carried out 2 Offset correction 3 Adjustment of zero 4 Adjustment of span

The offset correction (only in mode gauge pressure) defines the reference position for the measurement. It can be carried out:

- before or after the adjustment of zero and

span

- before or after installation of VEGABAR.

VEGABAR must be unpressurised for the offset correction!

The adjustment without pressure can be carried out with the sensor installed or not installed (e.g. workroom). Any currently existing pressure has no effect on the adjustment.

1 Selection of the unit

Adjust

without

3 Adjustment of zero

mbar

4 Adjustment of span

Span

100,0

mbar

Choose the unit with the "+“ or "–“ key. Save the selected unit with the

press.

"OK“ key.

Unit

0.0

mbar

psi kPa

Adjust zero with the "+“ or "–“ key

Zero

0,0

and save with the "OK“ key.

Adjust span with the "+“ or "–“ key and save with the "OK“ key.

20 VEGABAR 44 (HART®)

Setup

Note:

- A modification of zero does not influence the adjusted span, i.e. the final value of the measuring range will simply be shifted.

- By pushing the "+“ or "–“ keys individually, the current output remains at the last value, it takes on the adjusted value only after storing with the "OK“ key.

Evaluation

Linearisation curve

Lin.-

Is only displayed if a linearisation

curve

curve had been activated with VVO.

active

Adjustment of the integration time

An integration time ti of 0 s … 10 s

can be adjusted with the "+“ or "–“

saved with the "OK“ key.

Selection of the indicated unit

Scaling indication

key. The adjusted value can be

The actual measured pressure is

Unit

0.0

indicated in the DOT-matrix in the

mbar

measured value indication. The

psi

respective unit can be chosen with

kPa

the "+“ or "–“ key and the "OK“ key

% Scal.

from a list. When choosing the unit

"Scal.“, the following menu items are available.

Bar graph and digital value relate to the adjusted measuring range and change in proportion to the current output. Digital values < –10 % or > 110 % are shown as flashing figures.

As a result of scaling, the 4 mA or 20 mA user-specific current output values are passed to the indicating module as 4-digit digital values.

Outputs

Current output/Selection of the characteristics

The current output provides the actual measured pressure as an analogue current signal 4 … 20 mA relating to the adjustment.

Current

The characteristics can also be

output

4-20mA

20-4mA

Fault signal

If, during the continuous self-monitoring, errors, damage or malfunctions in the measuring cell or the electronics are detected, a fault signal is triggered via the current output.

inverted, e.g. switched to 20 … 4 mA with the "+“ or "–“ key and the "OK“ key.

Fault

With "+“ or "–“ key and the "OK“

signal

key you can choose if the failure

22mA

3.6mA

current should be 22 mA or

3.6 mA.

In operating condition, the actual measured

Simulation

pressure is displayed on the indicating module:

- as bar graph with 20 segments

- as 4-digit digital value.

Scaling

indica-

tion

Simula-

You can set with the "+“ and "-“ key

tion

an individual pressure or % value to check the outputs of VEGABAR and connected components. The

Sim.

set value flashes during activated

xx.x

mbar

simulation. The simulation can be stopped with the "OK“ key.

0%=

VEGABAR 44 (HART®) 21

100%=

1000

Decimal

point

888.8

Escape

Setup

Additional functions

Sensor data

Important sensor data can be displayed via the DOT-matrix for information and diagnostic purposes:

- manufacturing date

- pointer function (p

- actual temperature value (Temp)

- pointer function (T

- diagnostic number

Addi-

tional

funct.

Sensor

data

Fabr.

P min

date

49.98

The min. and max. values can be set to the actual value by pushing the "+“ and "–“ keys simultaneously.

P max

-0.3

mbar

1) 1) 1)

150

mbar

min

max

min

max

Temp.

)

30.7

°C

T min

23.5

°C

T max

36.2

°C

Diagnostic no.

- - -

Reset

The reset function deletes the ad-

Reset

justed values and resets all parameters to the default values. The adjustment data again correspond to the nominal measuring range.

Reset OK ?

Reset

Now!

OK ?

4.4 Setup with adjustment software VEGA Visual Operating (VV O)

VVO-connection to the 4 … 20 mAcable

4 … 20 mA-cable with superimposed digital signal

–

Language

Lan-

VEGABAR comes adjusted to the

guage

language in which it is ordered.

VEGACONNECT 2

The languages German, English, French, Italian or Spanish can be

Lan-

guage

English

Franc. Ital. Español Deutsch

chosen with the "+“ or "–“ key and the "OK“ key.

For connection of the PC to the sensor, a VEGACONNECT 2 must be connected as adapter between PC and 4 … 20 mA cable of the sensor.

A digital signal is superimposed on the 4 … 20 mA output of the sensor. Please note the internal resistance of the connected evaluation system. If it is < 100 Ω (e.g. with a power supply unit), the digital signal will be damped. In this case, connect a load resistor of R = 250 Ω into the 4 … 20 mA cable loop.

22 VEGABAR 44 (HART®)

Setup

R = 250 Ω

VEGACONNECT 2

to the sensor

{

–

On analogue inputs of VEGA signal conditioning instruments or PLC systems, this resistance is generally > 100 Ω, so that no damping occurs.

Sensor configuration

Connect the PC via VEGACONNECT 2 directly to the sensor or to the 4 … 20 mAcable. Then start VVO. If the PC was connected with VVO already running, push the function key F8 on the PC. Then your monitor shows this picture "VEGA Visual Operating“. For configuration of the sensor, first click to

Configuration, then to Measuring system.

Multidrop operation

VVO supports from version 2.60 the Multidrop operation of HART® sensors. Multidrop means that the pressure transmitter always consumes a supply current of 4 mA, independent of the pressure. The output signal is not transmitted as usual via the current strength but exclusively via a superimposed digital signal. By means of this, up to 15 HART® sensors can be operated on only one two-wire cable. Therefore it is necessary to allocate in advance an address (1 ... 15) to each individual sensor.

If you want to operate VEGABAR in Multidrop mode, you have to click to the button Config- ure mode in the window "Configuration measuring system“.

In the window "Configuration measuring system“ the menu language of VEGABAR can be adjusted (only on VEGABAR with electronic version "HL“). As measuring unit you can choose bar, psi or kPa. By clicking Reset the VEGABAR will be reset to default. Click to Save, after you have made modifications. With Quit you return to the window "VEGA

In the following window first choose Multid- rop, then you can adjust the address and click to OK.

Visual Operating“.

VEGABAR 44 (HART®) 23

After this, several HART® sensors can be connected to one common cable. The further adjustments of VEGABAR in Multidrop operation (e.g. adjustment, measured value display) do not differ from the adjustments in standard operation.

Setup

Sensor parameter adjustment – Adjustment

Configuration measurement loop

Click to Configuration, point to Measurement loop, then click to Modify.

In the window "Configuration Measurement loop Modify“ you can assign a name and a description to the measurement loop. An unambiguous name is important when you adjust several sensors or measurement loops with VVO. State under "Application“ if you want to have a process pressure or level measurement. With OK you again reach the window "VEGA Visual Operating“. In the following explanations we assume that you have chosen the application "Process pressure measurement“. With the application "Level measurement“ the adjustment deviates slightly from the following demonstration.

Click to Instrument data, then to Parameter adjustment.

Confirm this message with OK. Then the window "Instrument data parameter adjustment“ appears.

From the window "Instrument data parameter adjustment“ you reach all submenus of the sensor. We recommend trying the individual buttons one after the other. Then you always reach this window. Click to the button Adjust- ment to carry out the adjustment.

24 VEGABAR 44 (HART®)

Setup

If you want to carry out the "Adjustment with medium“ (live adjustment), click in this window to yes, then to OK.

Click to Zero or to Span to carry out the appropriate adjustment.

In the window "Adjustment“ you click to Zero/ Span.

Then, in the window "Zero/Span adjustment“ you must choose the adjustment mode. If you want to carry out the “adjustment without taking the actual product into account” (dry adjustment), click to no, then to OK.

Here you can choose in which unit the adjustment should be carried out (mbar, psi, kPa). Then you enter in the appropriate fields the pressure values corresponding to 0 % and 100 %. Then click to OK. The adjustment is now carried out.

Note:

For the zero adjustment, the vessel or the pressure lines must be unpressurised! For the span adjustment you have to generate a defined pressure (e.g. 80 %) in the vessel or in the pressure lines.

In the window "Zero adjustment“ you choose in which unit the adjustment should be carried out (mbar, psi, kPa). Click to Save. The zero adjustment is then carried out.

VEGABAR 44 (HART®) 25

Setup

In the window "Span adjustment“ you first choose in which unit the adjustment should be carried out (mbar, psi, kPa). Please state if you want to edit the percentage value or the current value. If you want to edit the percentage value, enter the value (e.g. 80 %) in the field. Then click to Save. The span adjustment is carried out.

Sensor parameter adjustment – Linearisation curves

Click in the window "Instrument data parameter adjustment“ to Conditioning.

In the window "Linearisation“ you can choose the linearisation curves of a horizontal cylindrical tank or a spherical tank. When choosing a user-programmable curve, you can then click to Edit and start the program "Tank Calculation“. With this program you can calculate the curves of different tank shapes (see manual "VEGA Visual Operating“). After selection of the curve, click to OK.

Sensor parameter adjustment – Integration time

Click in the window "Instrument data parameter adjustment“ to Conditioning.

Click in the window "Conditioning“ to Lineari- sation.

Click in the window "Conditioning“ to Integra- tion time.

26 VEGABAR 44 (HART®)

Setup

In the window "Integration time“ you can enter a time of max. 10 seconds. Then click to OK.

Sensor parameter adjustment – Outputs

Click in the window "Instrument data parameter adjustment“ to Outputs.

In the window "Current output“ you can set the strength of the current in case of failure (e.g. line break). Furthermore the current can be inverted, i.e. at 0 % the current output is 20 mA, at 100 % 4 mA. Click to Save when you have modified the adjustment.

Click in the window "Conditioning“ to Display of measured value (only possible if you have connected a display on VEGABAR).

In the window "Sensor-Display“ you choose the parameter and the unit which the display should indicate. If you choose "scaled“, you can enter the figures corresponding to 0 % and 100 %. Click to Save when you have finished the adjustments in this window.

Click in the window "Conditioning“ to Current output.

VEGABAR 44 (HART®) 27

Setup

Sensor parameter adjustment – Offset correction

Click in the window "Instrument data parameter adjustment“ to Additional Functions, then in the window "Additional Functions“ to Offset correction.

Confirm the question with OK, if the conditions are met.

Pointer function

Click in the window "Instrument data parameter adjustment“ to Meas. Loop Data.

In the window "Measurement loop data“ all available actual sensor values and the peak values (pointer function) will be displayed. With the button reset you can set all indicated peak values simultaneously to the actual value.

Click in the window "Offset correction“ to Correct.

28 VEGABAR 44 (HART®)

Setup

Simulation

Pressure can be simulated to check the outputs of VEGABAR and connected instruments or components. To do this, click to Diagnosis, then to Simulation.

In the window "Simulation of outputs“ click to Start to start the simulation. With the buttons "<–“ and "–>“ (or with the horizontal scroll bar between) you can adjust values between

-10 % and 110 %. Click to Stop to end the simulation.

Display of measured value

The actual values of the measurement loops can be displayed from the main menu. Click

DisplayDisplay

Display, then to

DisplayDisplay

valuevalue

value.

valuevalue

In the window "Display of measured value“ you can choose the unit in which the measured value is indicated. Furthermore you see the current value. By clicking to Quit you return to the window "VEGA Visual Operating“.

Display of measurDisplay of measur

Display of measur

Display of measurDisplay of measur

eded

Note:

The simulation mode is not stopped automatically, but remains active until you switch it off!

VEGABAR 44 (HART®) 29

Setup

4.5 Setup with HART® handheld

With any HART® handheld you can set up VEGABAR 44 like all other HART® compatible sensors. A special DD (Device Description) is not necessary. Just connect the HART handheld to the sensor signal cable after you have connected the sensor to supply voltage.

250 Ω

Note:

If the resistance of the signal circuit is less than 200 Ω, a resistor of 250 … 350 Ω must be looped into the signal/connection line during adjustment. The digital adjustment and communication signals would otherwise be short-circuited through insufficient resistance of e.g. the supply voltage source or the processing system. In such case, communication with the sensor would not be assured. Simply connect the adjustment resistor in parallel to the connection socket of the HART handheld (see figure).

–

Ri < 200 Ω

30 VEGABAR 44 (HART®)

Setup

The most important adjustment steps

On the following four pages you see a menu schematic of the HART® handheld in conjunction with VEGABAR process pressure transmitters. The most important adjustment steps are marked in the menu schematic with the letters A … E. If you are not familiar with HART® handheld, please note: For the parameter adjustment, first push the " key. The adjustment is saved in the handheld, but not in the sensor itself.

Generic: SENSOR PV URV

100.0 mbar

90.3 mbar

HELP DEL ESC EN TER

After you have pushed " push "

SEND

“ (here in the example for the

ENTER

min. adjustment).

Generic: SENSOR

1 PV LRV bar 2 PV URV bar

HELP SEND H O ME

ENTER

“

4.2 (5.2)

“, you have to

Push "OK“ and the adjustment is now transferred to the sensor. After a short moment, you are asked to switch the system from manual to automatic operation. Confirm with "OK“.

Generic: SENSOR

– WARNING –

Return control loop to automatic control

You now see the adjustment that was made.

Generic: SENSOR

1 PV LRV bar 2 PV URV bar

HELP HOME

After pushing "

SEND

“, a warning is displayed that you are about to change device output and for safety reasons you should switch your system to manual operation.

Generic: SENSOR

– WARNING – Pressing "OK“ will change device output.

Put loop in manual.

ABORT OK

VEGABAR 44 (HART®) 31

HART® menu schematic

Switch on:

Hart Communicator

Self T est

in Progress

Firmware Rev: F2.2 Module Rev: 3.6

01992-96 FRSI

after approx. 20 s

Generic: SENSOR Online(Generic)

1 Device setup 2 PV 80.945 mbar 3 PV AO mA 4 PV LRV bar 5 PV URV bar

SAVE

Set up the sensor in the sequence of the letters A, B, C and D (adjustment without medium). For the adjustment with medium you setup the sensor in the sequence A1, B1, C and D.

Generic: SENSOR Device setup

1 Process variables 2 Diag/Service 3 Basic setup 4 Detailed setup 5 Review

SAVE HOME

Generic: SENSOR PV

80.945 mbar

HELP EXIT

Generic: SENSOR AO1

16.952 mA

HELP EXIT

Generic: SENSOR Process variables

1 Snsr 80.945 mbar 2 AI % rnge 3 AO1 mA

HELP SAVE HOME

Generic: SENSOR

1 PV LRV bar

2 PV URV bar

HELP HOME

Generic: SENSOR

– WARNING –

Return control loop to automatic control

Generic: SENSOR

– WARNING – Pressing "OK“ will change device output.

Put loop in manual.

ABORT O K

Generic: SENSOR

1 PV LRV bar 2 PV URV bar

Setup

1.1

HELP SEND HOME

4.1 (5.1)

4.2 (5.2)

Important and required menu windows

Less important menu windows

Not required, unimportant or blocked menu windows

Generic: SENSOR

1 PV LRV bar 2 PV URV bar

HELP HOME

Generic: SENSOR

1 PV LRV bar 2 PV URV bar

HELP HOME

continue like under 4

Generic: SENSOR PV LRV

0.000 mbar

10.000 mbar

HEL P D EL ESC ENTER

Empty adjustment without medium

Generic: SENSOR PV URV

100.000 mbar

90.300 mbar

HELP DEL ESC ENTER

Full adjustment without medium

continue like under A figure 4.1(5.1)

32 VEGABAR 44 (HART®)

Setup

Generic: SENSOR PV

80.945 mbar

HELP EXIT

Generic: SENSOR PV % rnge

80.945 %

HELP EXIT

Generic: SENSOR AO1

16.952 mA

HELP EXIT

Generic: SENSOR Diag/Service

1 Test de vice 2 Loop test 3 Calibration 4 D/A trim

SAVE HOME

Generic: SENSOR Basic setup

1Tag 2 PV Unit 3 Range values 4 Device information 5 PV Xfer fnctn

HELP SAVE HOME

6 PV Damp

1.1.1

Safety enquiry Acknowledge

1.1.2

1.1.3

1.2

Blocked menu. The following menu window is indicated but not supported by the sensor. Therefore saving of adjustments carried out here is not possible.

1.3

T r ansmission function (linear)

Generic: SENSOR Choose analog output level

14 mA 2 20 mA 3 Other 4End

Generic: SENSOR Calibration

HELP SAVE HOM E

ABORT ENTER

1 Apply values 2 Enter values

D C

HELP HOME

Generic: SENSOR Tag

SENSOR SENSOR

HE LP DEL ESC ENTER

Generic: SENSOR PV Snsr unit bar

mbar g/cm2 kg/cm2 Pa

Generic: SENSOR Range values 1 PV LRV bar 2 PV URV bar 3 PV LSL bar 4 PV USL bar

Generic: SENSOR Device information

1 Distributor 2 Model 3 Dev id 4Tag 5 Date 10/01/97

HELP SAVE HOME

6 Write protect None 7 Descriptor 8 Message 9 PV Snsr s/n Final asmbly num 0 Revision #´s

Generic: SENSOR PV Damp

1.000 s

2 .000 s

1.2.2 Input of individual current

values for test purposes (simulation of measured value)

1.2.3

A1 B1

1.3.1

1.3.2

ESC ENT E R

1.3.3

1.3.4

1.3.6

Empty and full adjustment with medium

}

(see next page)

Newly assigned measurement loop designation to be saved with ENTER and SEND

see next page

}

see next page

}

HELP DEL ESC EN TER

Generic: SENSOR Review

Model

Generic

HELP PREV

NEXT EXI T

1.5

Generic: SENSOR Detailed setup

1 Sensors 2 Signal condition 3 Output condition 4 Device information

SAVE HOME

1.4

}

see next page

VEGABAR 44 (HART®) 33

Setup

HART® menu schematic (continuation)

Generic: SENSOR Calibration

1 Apply values 2 Enter values

HELP SAVE HOME

Generic: SENSOR Range values 1 PV LRV bar 2 PV URV bar 3 PV LSL bar 4 PV USL bar

HELP HOME

Generic: SENSOR Device information

1 Distributor 2 Model 3Dev id 4Tag 5 Date 10/01/97

HELP SAVE HOME

6 Write protect None 7 Descriptor 8 Message 9 PV Snsr s/n Final asmbly num 0 Revision #´s

Generic: SENSOR Detailed setup

1 Sensors 2 Signal condition 3 Output condition 4 Device information

SAVE HOME

1.2.3

1.2.3.1

Generic: SENSOR Enter values

1 PV LRV bar 2 PV URV bar 3 PV USL bar 4 PV ´LSL bar

HELP HOME

1.3.3

Indication of the

}

sensor measuring range limits

Menu fields (broken line: Repetition of previous page

1.3.4

Unknown Enumerator

General

(1.3.4.3) Indication of the sensor serial number

individual text adjustment

Indication of the sensor serial number (as menu window 1.3.4.3)

1.4

like menu 1.3.4

Safety enquiry Acknowledge

(1.3.4.4) Measurement loop designation as under menu window 1.3.1

(1.3.4.5) Date adjustment

None

individual text adjustment

Generic: SENSOR Sensors

1 PV 80.945 mbar 2 PV Snsr unit bar 3 Sensor information

HELP SAVE HOME

Generic: SENSOR Signal condition

1 Snsr Damp 1.000 s 2 AI URV 3AI LRV 4 Xfer fnctn 5 % rnge

HELP SAVE HOME

Generic: SENSOR Output condition

1 Analog output 2 HART output

Generic: SENSOR Set the:

14mA 2 20mA 3Exit

ABORT ENTER

1.2.3.2 like display 4.1

like display 4.2

Indication of the

}

sensor measuring range limits

Generic: SENSOR PV LRV

0.000 mbar

10.000 mbar

HELP DEL ESC ENTER

Generic: SENSOR PV URV

100.000 mbar

90.300 mbar

HELP DEL ESC ENTER

Empty adjustment with medium

1.2.3.1

Generic: SENSOR Apply new 4 ma input

Generic: SENSOR Apply new 20 ma input

1.3.3.1

1.4.1 Measured value

Modification of the unit

Info on lower and upper measuring range limit as well as min. span (also the sensor

1.4.2

characteristics values)

Adjustment of the integration time

Adjustment of zero and span

linear

Indication of the level in % of the adjusted span

1.4.3

Full adjustment with medium

1.3.3.2

ABORT OK

SAVE HOME

34 VEGABAR 44 (HART®)

Setup

Generic: SENSOR Current applied process value :10.945 mbar

1 Set as 4 mA value 2 Read new value 3 Leave as found

ABORT ENTER

Generic: SENSOR Current applied process value:

85.281 mbar 1 Set as 20 mA value 2 Read new value 3 Leave as found

ABORTENTER

Generic: SENSOR Analog output

1 AO1 13.467mA 2 AO Alrm typ Lo 3 Loop test 4 D/A trim 5 Scaled D/A trim

HELP SAVE HOME

1.2.3.1.1

1.2.3.1.2

1.4.3.1

Generic: SENSOR Set the :

14 mA 2 20 mA 3Exit

ABORT EN TER

Generic: SENSOR Ser the:

14 mA 2 20 mA 3Exit

Generic: SENSOR AO Alrm typ Lo

Generic: SENSOR WARN-Loop should be removed from automatic control

Menu windows are displayed but not

}

supported by the sensor. Saving of adjustments carried out here is therefore not possible.

1.2.3.1.1.1

ABORT ENTER

1.2.3.1.2.1

1.4.3.1.2

EXIT

1.4.3.1.3

ABORT O K

Generic: SENSOR Apply new 4 ma input

ABORT OK

Generic: SENSOR Apply new 20 ma input

ABORT OK

Low: I n case of failure, current output

goes to 22 mA

High: In case of failure, current output

goes to < 3.6 mA

Generic: SENSOR Choose analog output level

14 mA 2 20 mA 3 Other 4End

ABORT ENTER

1.4.3.1.3

Generic: SENSOR Current applied process value:

10.945mbar

Generic: SENSOR Current applied process value:

85.281 mbar

Generic: SENSOR Fld dev output is fixed at 4.000 mA

1 Set as 4 mA value 2 Read new value 3 Leave as found

ABORT ENTER

1 Set as 20 mA value 2 Read new value 3 Leave as found

ABORT ENTER

1.4.3.1.3.1

ABORT O K

1.4.3.2.3

ESC ENTER

1.4.3.2.4

Off On Not used Non Unused Special

Leave the Burst-mode in OFF-position

Choice is not supported

Sensor signals measured values only on request Sensor signals measured values unrequested

Choice is not supported

Generic: SENSOR HART output

1 Poll addr 2 Num req preams 0 3 Burst mode Off 4 Burst option

HELP SAVE HOME

Generic: SENSOR Burst mode Off

On Not used None Unknown

1.4.3.2

Generic: SENSOR Burst option *************

PV % range/current Process vars/crnt

HELP ESC ENTER

Note:

After adjustment of a parameter, push "ENTER“ and then "SEND“. Confirm the message to switch over to manual operation with "OK“. Confirm the message to reset to automatic operation also with "OK“. Only then will the adjustment be stored in the sensor and take effect.

VEGABAR 44 (HART®) 35

5 Diagnostics

Diagnostics

5.1 Maintenance

VEGABAR process pressure transmitters are maintenance-free.

5.2 Failure rectification

Fault signals

VEGABAR provides maximum reliability with its self-test and continuous self-monitoring. VEGABAR diagnostics distinguishes between atypical process conditions and faults in the VEGABAR.

Atypical process conditions

Exceeding or falling short of measuring range limits (fault signal extinguishes when the measured value is again in the measuring range).

Failure in VEGABAR

Failure in the electronics, interference or damage to the measuring cell.

The following table assists in analysis of fault signals.

Reason Fault signal via

Clearly "OPERATE Bar graph 0 % outside ???? or 100 % Current measuring bar“ digital value value range flashes 3.6 mA

Overload Bar graph 0 % range or 100 %, of the digital value, four meas. cell flashing seg-

Failure in all segments VEGABAR flash

DOT-matrix Bar graph Current

Digital indication output

or 22 mA

ments "- - - -“

On instruments with menu-driven adjustment with additional functions, the possible reasons are displayed under the menu item "Diagnostics no.“.

Diagnostics no. Meaning

1 Connection to CID converter inter-

rupted

2 Frequency signal of the capacitor not

within the limit values

3 Frequency signal of the reference

capacitor not within the limit values

4 Frequency signal temperature not

within the limit values

7 Communication error to EEPROM

9 Error in EEPROM CRC-checksum

11 Process fitting or electronics unit has

been exchanged (appears for approx. 20 s after switching on for the first time after the exchange)

Troubleshooting

If the displayed value does not correspond to the level in the vessel or to the process pressure, the following measures must be taken:

- check the pressure compensation (only with gauge pressure measuring ranges)

- check the electrical connection.

36 VEGABAR 44 (HART®)

Diagnostics

Checking pressure compensation

Open the housing of VEGABAR. The measured value must not change. However, if the displayed value changes, compensation of the atmospheric pressure is not ensured, which will lead to distortion of the measured value. Check the breather on the VEGABAR housing.

Checking the electrical components

–+

1 2 3

–

Voltage

Ammeter for local control

Current

External energy source

–

Voltage

- the terminal voltage on VEGABAR must be at least 12 V DC

Current

Current value Condition

3.8 … 20.5 mA standard range for the output

0 mA signal cable interrupted

< 3.6 mA sensor electronics or pressure

22 mA sensor electronics or pressure

current

sensor element defective

VEGABAR 44 (HART®) 37

6 Instrument modification

Instrument modification

6.1 Exchange of adjustment modules

Display module

Module for basic functions

Module for menu-driven adjustment

Module without adjustment

Exchange of the adjustment module

Removal of the adjustment module

• Separate VEGABAR from the power supply

• Loosen the screws on the upper side of the housing and remove the cover or the display module

• Loosen connection cables from the terminals, if necessary pull out the plug connection of the display module

• Loosen the two screws of the adjustment module

• Remove adjustment module and pull out the plug connection

Insertion of an adjustment module

• Plug the plug connection of the new adjustment module into the plug-in socket of the sensor electronics

• Fasten the new adjustment module

• Reconnect the connection cables, if necessary, also the cable from the display module

• Close cover or display module of VEGABAR

• Reconnect VEGABAR to power supply

VEGABAR

The modular construction of VEGABAR allows retrofitting, interchange or removal of the adjustment and display modules. Data previously saved (e.g. adjustment values) are not stored in the adjustment module but in an EEPROM of the electronics module and therefore readjustment is not necessary. The connection of the modules is made via a 4pole plug connection.

38 VEGABAR 44 (HART®)

Instrument modification

6.2 Exchange of electronics

You first have to remove the adjustment module, as described in chapter "6.1 Exchange of adjustment modules“, in order to exchange the complete electronic module of VEGABAR.

Ground screw

Fixing screw

Note:

No new adjustment is necessary after exchanging the electronics module. When switching on (connection of supply voltage) for the first time after exchange of the electronic unit, it takes approx. 20 s until the actual measured value is displayed.

Plug connection

• Remove the ground screw and the two smaller fixing screws connecting the electronic unit with the housing

• Pull the electronic unit to the top and pull out the plug connection

• Proceed in reverse sequence when installing the new electronics module

VEGABAR 44 (HART®) 39

Instrument modification

6.3 Exchange of the hygienic form seal on VEGABAR 44

On the VEGABAR 44 process pressure transmitter with hygienic fitting LA or LB, the ceramic measuring cell is sealed by a gapless, radial form seal. This form seal (material EPDM-FDA 1) approved) can be exchanged by the user without readjustment being necessary. The criteria and time periods for such an exchange are determined by process conditions and hygienic requirements.

Important:

Only use the original VEGA replacement part, article no. 2.17 775 as seal ring!

Note the following procedure when exchanging the seal.

Removal procedure:

1 Pressure transmitter should be unpres-

surized (switch off process pressure or empty vessel).

2 Loosen the hexagon head screw (46 mm

across flats) (1) by turning counterclockwise

Installation procedure:

6 Pull a new form seal (5) over the measur-

ing cell (the conical side should point towards the process connection!).

7 Insert the pressure transmitter carefully

into the process connection by turning clockwise.

8 Tighten hexagon head screw (46 mm) (1)

to its fixed position (45 Nm).

9 Rotate the housing (4) of the pressure

transmitter to its original position

Exchange of the form seal is now finished. Ensure proper disposal of the removed seal.

Note!

The process connection (2) (i.e. sleeve nut) must not be loosened!

3 Completely loosen the compression

screw (hex head) and remove the pressure transmitter from the process connection

Note:

Should the pressure transmitter turn by loosening the pressure screw, it can be held by the adapter (3) with a wrench (36 mm across flats).

1 Hexagon compression screw 2 Process connection 3 Adapter 4 Housing 5 Form seal

4 Slightly lift the form seal (5) (with a knife

or similar utensil) and loosen it from the ceramic measuring cell

5 If the form seal (5) does not completely

surround the measuring cell, it should be carefully removed from the process connection.

Food and Drugs Administration

40 VEGABAR 44 (HART®)

Notes

VEGABAR 44 (HART®) 41

Notes

42 VEGABAR 44 (HART®)

Notes

VEGABAR 44 (HART®) 43

VEGA Grieshaber KG Am Hohenstein 113 D-77761 Schiltach Germany Phone +49 (0) 7836 50-0 Fax +49 (0) 7836 50-201 E-Mail info@de.vega.com

www.vega.com

ISO 9001

The statements on types, application, use and operating conditions of the sensors and processing systems correspond to the latest information at the time of printing.

Technical data subject to alterations

24411-EN-021218

VEGA BAR44 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety information

Note Ex area

1 Product description

1.1 Function and configuration

1.2 Self-monitoring

1.3 T echnical data

1.4 Approvals and certificates

1.5 Dimensions

2 Mounting

2.1 Mounting instructions

3 Electrical connection

3.1 Connection instructions

3.2 Connection diagram

3.3 Connection examples

4 Setup

4.1 Indicating module

4.4 Setup with adjustment software VEGA Visual Operating (VV O)

4.5 Setup with HART® handheld

5 Diagnostics

5.1 Maintenance

5.2 Failure rectification

6 Instrument modification

6.2 Exchange of electronics

6.3 Exchange of the hygienic form seal on VEGABAR 44