WIKA Delta-plus Manual de usuario

II 2 GD c

Model 702.01.100 per ATEX

Model 702.02/03.100 per ATEX

Model 851.02.100 per ATEX

Operating Instructions

Betriebsanleitung

Mode d’emploi

Differential pressure gauges Model 702.01.100, 702.02.100,

702.03.100 and 851.02.100 per directive 94/9/EC (ATEX)

Differenzdruckmessgeräte Typ 702.01.100, 702.02.100, 702.03.100

und 851.02.100 nach Richtlinie 94/9/EG (ATEX)

Manomètres pour pression différentielle Type 702.01.100,

702.02.100, 702.03.100 et 851.02.100 selon directive 94/9/EG (ATEX)

2WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

GB Operating instructions Model 702.01.100, 702.02.100,

702.03.100 and 851.02.100 per ATEX Page 1-14

Betriebsanleitung Typ 702.01.100, 702.02.100,

702.03.100 und 851.02.100 nach ATEX Seite 15-26

Mode d’emploi Type 702.01.100, 702.02.100,

702.03.100 et 851.02.100 selon ATEX Page 27-35

3WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

Contents

1. Safety instructions 4

2. Description and operating principle 4

3. Technical data and intended use 5

4. Requirements for use in potentially explosive

atmospheres 5

5. Installation instructions 6

6. Measuring assembly 7

7. Commissioning 8

8. Optional extras / accessories 9

9. Maintenance and servicing / cleaning 11

10. Repairs 11

11. Disposal 11

Enclosure 1: Declaration of conformity

for Model 702.01.100 su 12

Enclosure 2: Declaration of conformity

for Models 702.02.100 / 702.03.100 st 13

Enclosure 3: Declaration of conformity

for Model 851.02.100 sv 14

Contents

4WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

2. Description and operating principle

The jand imeasuring medium chambers are separated by an elastic dia-

phragm. The differential pressure causes an axial movement (measured travel) in

the diaphragm against the measuring range spring. The measured travel is

proportional to the differential pressure and is transmitted, "pressure sealed"

and with minimal friction, via a connecting rod; for:

Tsu to the movement

Tst to the movement

and in addition to the plungers

on the microswitches

Tsv to the plungers

on the microswitches

For further information on gauge

construction

Tsu see data sheet

PM 07.15

Tst see data sheet

PM 07.16 or PM 07.19

Tsv see data sheet

PM 07.17

2122740.01

Illustration for example st

Caution

1. Safety instructions

The appropriate national safety regulations (i.e. VDE 0100 /

EN 60 079-14 / EN 837-2) must be observed when installing,

commissioning and operating these instruments.

TDo not work on gauge while under voltage (applies to

Model 702.02/03.100 and 851.02.100)

TSerious injuries and/or damage can occur should the appropriate

regulations not be observed

TOnly appropriately qualified personnel should work on these

instruments

TThe effective maximum surface temperature does not depend on

these gauges themselves, but mainly on the respective medium

temperature! For maximum permissible medium temperatures,

see the table on page 6.

1. Safety instructions / 2. Description and operating principle

5WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

3. Technical data and intended use / 4. Requirements for use ...

3. Technical data and intended use

Static pressure: 25 bar

Overpressure safety (either side): up to 25 bar max.

Operating temperature Ambient -10 … +70 °C

Medium +90 °C maximum

Observe restrictions for use in potentially explosive atmospheres

(see section 4)

Pressure connection: 2 × G ¼female

IP Ingress protection: IP 54 (EN 60 529 / IEC 529)

Permissible vibration levels at the mounting point

TAs a matter of principle the instruments should only be mounted in locations

without a vibration load.

TIsolation from a mounting point exposed to vibration can be achieved, for

example, by mounting the pressure gauge to a solid wall and a flexible

capillary connecting the measuring point to the pressure gauge (see

section 5).

TThe following limits must not be exceeded:

Frequency range < 150 Hz

Acceleration < 0.7 g (7 m/s2)

Electrical contact

(applies to Model 702.02/03.100 and 851.02.100)

Adjustable range: from 10 % to 100 % of span

Switching point adjustment: from the outside by means of setpoint screw(s)

Contact hysterisis: max. 5 % of full-scale value

Note

4. Requirements for use in potentially explosive

atmospheres

The built-in Reed contacts (applies to Model 702.02/03.100 and

851.02.100) do not possess their own ignition source. For the

purposes of intrinsic safety they are 'simple apparatus' as defined

in EN 50 020.

When supplied from a tested and certified intrinsically safe circuit

(associated apparatus), these switches may be used in potentially

explosive atmospheres up to category 2 without having to take any

further measures.

6WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

Operating temperature for all Models

Ambient (for use in potentially explosive atmospheres): -10 ... +60 °C

Medium: The permissible medium temperature does not only depend on

the instrument design, but also on the ignition temperature of the

surrounding explosive atmosphere. Both aspects have to be

taken into account.

For permissible maximum medium temperatures see table

Attention! With gaseous substances the temperature may increase as a result

of the compression temperature. In such cases, either the rate of change of the

pressure must be slowed down or the permissible medium temperature must be

reduced.

Permissible medium temperature

Temperature class of Permissible maximum medium

the ambient atmosphere temperature (in the pressure system)

(ignition temperature)

T 6 ( > 85 °C) +70 °C

T 5 ( > 100 °C) +85 °C

all other temperature classes +90 °C

5. Installation instructions

Installation of the differential pressure gauge should follow the installation

recommendations for pressure gauges according to EN 837-2 /7.

TThe maximum permissible medium / ambient temperature must not be

exceeded

TPrior to the installation of the pressure gauge, the pipes should be thoroughly

cleaned by tapping, blowing or rinsing

TThe pressure gauges must be protected against contamination and high

temperature fluctuations!

TThe pressure gauges should be installed and operated so as to avoid

exposure to vibration (see also section 3: Permissible vibration levels at the

mounting point).

4. Requirements for use ... / 5. Installation instructions

7WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

2123541.01

5. Installation instructions / 6. Measuring assembly

Wall mounting

Installation using the three integral, cast mounting brackets

6. Measuring assembly

Proven measuring assemblies for various types of media. Recommended

set-up for pressure measurement instruments are shown below.

Contents of

tail pipe

Typically

Pressure

instrument

higher

than tapping

point

Pressure

instrument

lower

than tapping

point

Liquid media Gaseous media

Liquid Liquid with Vapour Gas only Wet gas Liquid gas

vapour only condensate

Condensate Boiling liquid LPG Dry air Moist air Steam

Flue gas

8WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

7. Commissioning

7.1 Mounting of the pressure connection

Pressure entries identified jand ij

high pressure

ilow pressure

During the commissioning process, pressure peaks must be avoided absolutely.

Open the shut-off valves slowly.

7.2 Wiring details

(applies to Model 702.02/03.100 and 851.02.100)

TThe electrical connections should be made by qualified electricians

TConnection details and switch functions are given on the instrument rating

plate. Connection terminals (1 ... 6) and the ground terminal are appropriately

marked.

TThe mains connection lines to be provided must be suitable for maximum

instrument power consumption and comply with IEC 227 or IEC 245

TThe instruments must be included in the equipotential bonding of the plant

850.33

2st contact

Connection is via a

terminal box or L-plug

per DIN 43 651

2162679.01

Terminal box

850.33 2nd contact

850.3 1st contact

2162679.0X

850.3

1nd contact

Connection details

Connection is via a

cable gland and cable

Setting the switch point

The switch points are set by means of the setpoint screws, accessible from the

front. The 270 p° assistant scale indicates the current setpoint.

For contact re-adjustment, lever the window out of the case via the recess in its

circumference. The desired switch point can be set by turning the setpoint

screw.

Afterwards press the window back into the case.

9WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

8. Optional extras / accessories

8.1 Integrated pressure equalising valve

The zero point check during operation

is enabled by pushing the valve

button.

The measuring medium flows

from the higher pressure side to the

opposite side and the differential

pressure drops to zero.

st and sv:

When the valve button is pushed, the differential pressure pointer must move

into the range of the zero point tolerance bar. If it does, the instrument is

functioning correctly. In the case of possible deviations beyond the tolerance

bar, a zero point correction can be made via a standard integrated adjustment

pointer.

To do this, the snap-fit window must be lifted

off using a screw driver at the impression/recess

in the circumference.

The zero point is corrected by turning the slotted

screw on the adjustment pointer.

Afterwards the window must be snap-fitted back

onto the case. The differential pressure is indicated

once more, as soon as the valve button is released.

8. Optional extras / accessories

Slotted

screw

Differential pressure

is zero Differential pressure

is measured again

Released

Valve button,

pushed

10 WIKA Operating instructions DELTA-plus, DELTA-comb and DELTA-switch per ATEX

11242370 06/2007 GB/D/F

Gauge valve,

low pressure

side i

Pressure

equalising valve

Gauge valve,

high pressure

side j

Valve for

purging or

air bleeding

8. Optional extras / accessories

8.2 Four-way valve manifold

TShut off j- and iprocess line for disassembling and testing of

measuring instrument without interrupting the process that is running.

Protect the instrument against inadmissible

overpressure loading, such as, for example,

in the case of pressure tests and undefined

operating conditions (also temporary shut

down).

TPressure equalising for zero point check

during normal operation as well as equali-

sation of the pressures at high pressure and

low pressure side during start-up and operation

(with opened pressure equalising valve).

TProcess line air bleeding for liquid measuring

media and purging the process line for

removing impurities.

8.2.1 Handling instructions

TWork sequence to start measuring

1. Open pressure equalising valve (middle valve)

2. Open shut-off valve of the negative-pressure media chamber (iright

valve) and the positive-pressure media chamber (jleft valve)

3. Close pressure equalising valve

TOperating sequence for air bleeding/purging of piping

1. start: Open shut-off valve of the negative-pressure (i) and positive-

pressure (j) media chamber

Open pressure equalising valve and valve for purging or air bleeding

2. end: Close pressure equalising valve and valve for purging or air bleeding

TProcedure at the end of the measuring operation

(also for partial system shut-down)

1. Open pressure equalising valve

2. Close shut-off valve of the negative-pressure (i) and positive-pressure

(j) media chamber

TTask list for removing the transmitter during normal operation

1. Open pressure equalising valve

2. Close shut-off valve of the negative-pressure (i) and positive-pressure

(j) media chamber

3. Open valve for purging or air bleeding

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