WIKA 632.51+8xx User Manual [en, de, fr]

Operating Instructions Betriebsanleitung Mode d'emploi

Pressure gauges Model 632.51 per directive 94/9/EC (ATEX) with inductive alarm sensors Model 831

Druckmessgeräte Typ 632.51 nach Richtlinie 94/9/EG (ATEX) mit Induktiv-Grenzsignalgeber Typ 831

Manomètres Type 632.51 selon directive 94/9/EG (ATEX) avec seuil d‘alarme inductif Type 831

II 2 GD c

Model 632.51.160 per ATEX with inductive alarm sensors Model 831.12

Operating instructions Model 632.51 per ATEX with Model 831 Page 1 – 22

Betriebsanleitung Typ 632.51 nach ATEX mit Typ 831 Seite 23 – 42

Mode d'emploi Type 632.51 selon ATEX

avec Type 831 Page 43 – 49

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Contents

1. Safety instructions 4

2. Description 4

3. Technical data and intended use 5

4. Alarm contacts 7

5. Commissioning 9

6. Maintenance and servicing/cleaning 9

7. Repairs 9

8. Disposal 9

Enclosure 1: Declaration of conformity for Models 632.51 with inductive alarm sensors Model 831 10

Enclosure 2: EC-type examination certificate (Ex approval for gases) for slot-type initiators types SJ (WIKA-Model 831) 11 – 13

Enclosure 3: EC-type examination certificate (Ex approval for gases) for SN-sensors types SJ (WIKA-Model 831-SN/S1N) 14 – 17

Enclosure 4: EC-type examination certificate (Ex approval for dust) for SN-proximity sensors types SJ (WIKA-Model 831 and 831-SN/S1N) 18 – 22

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WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

1. Safety instructions / 2. Description

1. Safety instructions

Caution

The appropriate national safety regulations (i.e. VDE 0100/ EN 60 079-14/EN 837-2) must be observed when installing, putting into operation and running these instruments.

n Do not work on gauge while under voltage

n Serious injuries and/or damage can occur should the appropriate

regulations not be observed

n Only appropriately qualified persons should work on these

instruments

2. Description

n The pressure gauges measure the pressure by means of resilient capsule

measuring elements

n The measuring features follow the example of the standards EN 837-3 and

DIN 16 085

The built-in electrical alarm contacts are non-contact slot-type inductive proximity sensors, which are supplied from control units with circuits that are certified to be intrinsically safe. When the adjustable set points are reached, their output circuits will be opened or closed.

n As a standard slot sensors model 831 are used according to EC-type

examination certificate PTB 99 ATEX 2219 X (see enclosure 2) and ZELM 03 ATEX 0128 X (see enclosure 4)

n SN sensors models 831-SN and -S1N according to PTB 00 ATEX 2049 X

(see enclosure 3) and ZELM 03 ATEX 0128 X (see enclosure 4) are special designs with safety features (that are not relevant to explosion protection) for special applications

The connection values of the switches are in accordance with EN 60 947-5-6 (“NAMUR”).

WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

11059738 11/2008 GB/D/F

3. Technical data and intended use

Working pressure

Steady: full scale value Fluctuating: 0.9 x full scale value Overpressure safety: 50 x scale range 7 bar maximum

Pressure connection

n According to the general technical regulations for pressure gauges,

respectively (i.e. EN 837-2 “Selection and installation recommendations for pressure gauges”).

When screw-fitting the gauges the force required for sealing must not be applied through the case or terminal box but, using a suitable tool, only through the spanner flats provided for this purpose at the square of the connector.

Installation using a spanner

Temperature effect

When the temperature of the measuring system deviates from the reference temperature (+20 °C): max. ±0.6 %/10 K of full scale value

IP Ingress protection

IP 54 per EN 60 529 / IEC 60 529

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WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

3. Technical data and intended use

Operating Temperature

Ambient: -20 … +60 °C

Attention: Footnote 1) under table 1 must be absolutely taken into account!

Medium: see table 1 Attention! With gaseous substances the temperature may increase as a result of the compression temperature. In such cases the pressure change rate has to be slowed down resp. the permissible medium temperature has to be reduced.

Table 1: Permissible medium temperature (only mechanical part)

Ignition temperature of Permissible maximum medium temperature the ambient atmosphere (in the pressure system) (temperature class)

> 85 °C (T 6) +70 °C > 100 °C (T 5) +80 °C > 135 °C (T 4) +80 °C > 200 °C (T 3) +80 °C > 300 °C (T 2) +80 °C > 450 °C (T 1) +80 °C

1) The permissible uppper ambient temperature for the electrical components is determined by the electrical connection values and the ignition temperature of the ambient gases, vapours and dusts. Therefore the maximum permissible ambient temperatures specified in the EC-type examination certificates for slot-type sensors and SN sensors must be obser ved as well. The lower of these two values is to be considered the ma ximum permissible ambient temperature!

Materials (wetted parts)

Pressure connection with pressure chamber: Stainless steel Pressure element (capsule element): Stainless steel Sealing ring between socket and capsule element: PTFE

WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

11059738 11/2008 GB/D/F

3. Technical data … / 4. Alarm contacts

Installation

nNominal position per EN 837-3 / 9.6.6 Figure 7: 90° ( )

nPressure connection: lower mount (LM)

nIn order to avoid any additional heating, the instruments must not be

exposed to direct solar irradiation while in operation!

Permissible vibratory stress at the mounting location

n As a matter of principle the instruments should only be mounted at loca-

tions without vibratory stresses

n Where required, a decoupling from the mounting location can be achieved

e.g. by a flexible connecting line from the measuring point to the pressure gauge and mounting via a measuring instrument bracket.

4. Alarm contacts

EC-type examination certificates

n Standard version Model 831.XX

PTB 99 ATEX 2219 X (enclosure 2) and ZELM 03 ATEX 0128 X (enclosure 4) Depending on the number of switches and on the case diameter either Model SJ2-N … or Model SJ3.5- … -N … is used.

n Safety pattern version Models 831.XX-SN or -S1N

PTB 00 ATEX 2049 X (enclosure 3) and ZELM 03 ATEX 0128 X (enclosure 4) Depending on the number of switches and on the case diameter either Models SJ 2-SN …, SJ 2-S1N …, SJ 3.5-SN … or SJ 3.5-S1N … are used.

The built-in sensor type is stated on the product label of the pressure gauge.

Wiring details

n The electrical connections should be made by qualified electricians n Connection of the switches via screw terminals in the terminal box n Conductor cross section max. 1.5 mm

n The terminal assignment is stated on the connection plate at the

pressure gauge

n The instruments are to be included in the equipotential bonding of the plant

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WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

4. Alarm contacts

The permissible limits for Ui, Ii and Pi of the intrinsically safe supply circuits depend on the sensor type. They can be taken from the corresponding ECtype examination certificates. (The sensor type is stated on the connection plate of the pressure gauge.)

Suitable switch amplifiers are e.g.:

Circuit Sensor type Model designation EC-type exami- WIKA-

(s. Ex-certific.) Fa. Pepperl & Fuchs nation certificate Model

Model 1 standard KFD2-SR2-Ex1 PTB 00 ATEX 2080 904.31 standard KFD2-SR2 Ex2 PTB 00 ATEX 2080 904.32 Model 2 standard KFA6-SR2-Ex1 PTB 00 ATEX 2081 904.28 standard KFA6-SR2-Ex2 PTB 00 ATEX 2081 904.29 SN-sensors KFD2-SH-Ex1 PTB 00 ATEX 2042 904.33 SN-sensors KHA6-SH-Ex1 PTB 00 ATEX 2043 904.30

Electromagnetic compatibility

EMC according to EN 60 947-5-2. The instruments are to be protected against strong electromagnetic fields.

To adjust red set pointers

The red set pointers for the alarm contacts are adjustable over the adjustment lock in the window with the aid of adjustment key (included in delivery; to be found on standard gauges on the outside edge of the junction box).

Red set

pointers

Adjustment key removable

The red set pointers for the alarm contacts are adjustable over the full range of the instrument. Switching points shall be set in the ranges between 10 % and 90 %

Adjustment

lock

of the scale, to ensure switching accuracy and long life of the mechanical measuring system.

WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

11059738 11/2008 GB/D/F

5. Commissioning … 8. Disposal

5. Commissioning

During the commissioning process pressure peaks must be absolutely avoided. Open the shut-off valves slowly.

6. Maintenance and servicing/cleaning

The instruments require no maintenance or servicing. The indicator and switching function should be checked once or twice every 12 months. The instrument must be disconnected from the process to check with a pressure testing device.

The instruments should be cleaned with a damp cloth moistened with soap solution. For cleaning the instruments should be disconnected from the mains power supply. It must be ensured that all the parts are dry before the power is switched on again.

Remainder of the pressure medium in dismounted pressure gauges may be hazardous or toxic. This should be considered when handling and storing the removed pressure gauges.

7. Repairs

Repairs are to be only carried out by the manufacturer or appropriately trained personnel.

For further details see WIKA data sheet AC 08.01 or the data sheet for the respective basic gauge.

8. Disposal

Dispose of instrument components and packaging materials in accordance with the respective waste treatment and disposal regulations of the region or country to which the instrument is supplied.

11059738 11/2008 GB/D/F

WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX