WIKA 232.36 User Manual [en, de, fr]

Operating Instructions Betriebsanleitung Mode d'emploi

Pressure gauges Model 2 per directive 94/9/EC (ATEX) with inductive contacts Model 831

Druckmessgeräte Typ 2 nach Richtlinie 94/9/EG (ATEX) mit Induktivkontakten Typ 831

Manomètres Type 2 selon directive 94/9/EG (ATEX) avec contacts inductifs Type 831

II 2 GD c TÜV 03 ATEX 2302 X

Model 232.50.100 per ATEX with inductive contact Model 831.12

Operating instructions Model 2 per ATEX

with Model 831 Page 3-23 Betriebsanleitung Typ 2 nach ATEX

mit Typ 831 Seite 25-45 Mode d’emploi Type 2 selon ATEX

avec Type 831 Page 47-53

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Contents

1. Safety instructions 4

2. Description 4

3. Technical data and intended use 5

4. Switch contacts 7

5. Commissioning 9

6. Maintenance and servicing / cleaning 9

7. Repairs 9

8. Disposal 9 Appendix 1: Declaration of conformity for Models 2XX.51

with inductive contacts Model 831 Appendix 2: EC-type examination certificate (Ex approval

for gases) for slot-type initiators types SJ (WIKA-Model 831)

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

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

11-13

14-17

18-22

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WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

1. Safety instructions / 2. Description

1. Safety instructions

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

Caution

Only work on the gauge with the voltage disconnected



Serious injuries and/or damage can occur should the appropriate regulations



not be observed

Only appropriately qualified personnel should work on these instruments



EN 60 079-14 / EN 837-2) must be observed when installing, commissioning and operating these instruments.

2. Description

The pressure gauges measure the pressure with elastic Bourdon tube



measuring elements

The measuring characteristics are in accordance with the EN 837-1 and



DIN 16 085 standards

In addition the Models 23X.30 and 23X.36 also meet the requirements,



relating to safety pattern pressure gauges, outlined in the EN 837-1 (user protection) standard

The built-in electrical switch contacts are non-contact slot-type inductive proximity sensors, which are powered from switching amplifiers with certified

intrinsically safe circuits. When any of the adjustable set points is reached, the

associated output circuits will either open or close.

As standard Model 831 slot sensors, to EC-type examination certificate



PTB 99 ATEX 2219 X (see Appendix 2) and ZELM 03 ATEX 0128 X (see Appendix 4), are used

Model 831-SN and -S1N SN sensors, to PTB 00 ATEX 2049 X (see Appen-



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

The connected loads for the switches are in accordance with EN 60 947-5-6 ("NAMUR").

WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

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3. Technical data and intended use

Pressure limitation

Model 21X.20, 23X.50/30: Steady: full scale value

Fluctuating: 0.9 x full scale value

Short time: 1.3 x full scale value

Model 23X.36: Steady: full scale value

Fluctuating: 0.9 x full scale value

Short time: overload range

Process connection

In according with the general technical regulations for pressure gauges



(i.e. EN 837-2 „Selection and installation recommendations for pressure

gauges“).

When screwing gauges in, the force required for this must not be applied

through the case, but rather through the spanner flats (using a suitable tool)

provided for this purpose on the square shaft of standard connections.

Installation with spanner

Temperature effect

When the temperature of the measuring system deviates from the reference temperature (+20 °C): max. ±0.4 %/10 K of full scale value

IP Ingress protection

Housing (EN 60 529/IEC 60 529) Model 212.20: IP 54 Models 23X.X0/36: IP 65

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WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

3. Technical data and intended use

Operating Temperature

Ambient: -25 … +60 °C (with inductive contacts in safety pattern version

Models 831.XX-SN up to -40 °C)

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

Medium: see table 1 Attention! In the case of gaseous substances, the temperature may increase due to compression warming. In these cases it may be necessary to throttle the rate of change of pressure or reduce the permissible temperature of the pressure medium.

Temperature Class of the ambient atmosphere

Maximum permissible medium temperature (in the pressure system)

(ignition temperature)

Model 212.20 Models 232

(dry gauges)

T 6 (> 85 °C) +70 °C +70 °C +70 °C T 5 (> 100 °C) +80 °C +85 °C +85 °C T 4 (> 135 °C) +80 °C +120 °C +100 °C T 3 (> 200 °C) T 2 (> 300 °C) T 1 (> 455 °C) +80 °C +200 °C +100 °C

+80 °C +185 °C +100 °C +80 °C +200 °C +100 °C

Models 233

(liquid filled gauges)

Table 1: Permissible medium temperature (only mechanical part)

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 observed as well. The lower of these two values is to be considered the maximum permissible ambient temperature!

Installation

In order to ensure that with Model 23X pressure can be safely and reliably



vented through the case back, a distance of at least 25 mm must be left free behind the case!

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



exposed to direct solar irradiation while in operation!

With filled versions the ventilating valve (pressure ranges ≤10 bar) at the top



of the case must be opened prior to commissioning!

WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

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3. Technical data and intended use / 4. Switch contacts

Permissible vibration load at the mounting point

The instruments should always be installed in locations free from vibration.



If necessary, it is possible to isolate the instrument from the mounting point



by installing a flexible connection line between the measuring point and the pressure gauge and mounting the instrument on a suitable bracket.

If this is not possible, the following limit values must not be exceeded:



Dry gauges: Frequency range < 150 Hz (Model 732) Acceleration < 0.7 g (7 m/s

)

Liquid-filled gauges: Frequency range < 150 Hz (Model 733) Acceleration < 4 g (40 m/s

)

The liquid filling must be checked on a regular basis. The liquid level must not drop below 75 % of the gauge diameter.

4. Switch contacts

EC-type examination certificates

Standard version Model 831.XX



PTB 99 ATEX 2219 X (Appendix 2) and ZELM 03 ATEX 0128 X (Appendix 4) Depending on the number of switches and on the case diameter either

Model SJ2-N... or Model SJ3.5-...-N... is used.



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

PTB 00 ATEX 2049 X (Appendix 3) and ZELM 03 ATEX 0128 X (Appendix 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

The electrical connections must only be made by qualified personnel



Connection of the switches via screw terminals in the terminal box



Conductor cross section max. 1.5 mm



The terminal assignment is stated on the connection plate of the



pressure gauge

The instruments must be connected to the equipotential bonding of the plant



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WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

4. Switch contacts

The permissible limits of Ui, Ii and Pi for the intrinsically safe supply circuits depend on the sensor type. They can be taken from the corresponding EC-type 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 to EN 60 947-5-2. The instruments are to be protected against strong electromagnetic fields.

Adjusting red set pointers

The setting of the set point is achieved using the adjustment lock in the window with the aid of the adjustment key (part of the scope of supply; found in

standard instruments on the side of the terminal box).

Red set pointer

Removable

Adjustment

lock

adjustment key

The set point indicators for the switch contacts are freely adjustable over the

full scale range. For reasons of switching accuracy and long life of the mechanical measuring system, the switching points should be between 10 % and 90 % of the measuring range.

WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX

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5. Commissioning ... 8. Disposal

5. Commissioning

During the commissioning process pressure peaks must be avoided at all costs. 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.

Any residual pressure medium contained in the pressure element may be

hazardous or toxic. This should be taken into account when handling and

storing pressure gauges which have been removed.

7. Repairs

Repairs are only to be 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.

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WIKA Operating instructions pressure gauges Model 2 with 831 per ATEX