Operating Instructions
Betriebsanleitung
Mode d'emploi
Manual de Instrucciones
Pressure gauges Model 230.15 per directive 94/9/EC (ATEX) |
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without/with switch contact Model 851.3 |
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Druckmessgeräte Typ 230.15 nach Richtlinie 94/9/EG (ATEX) |
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ohne/mit Schaltkontakt Typ 851.3 |
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Manomètres Type 230.15 selon directive 94/9/EG (ATEX) |
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sans/avec commutateur Type 851.3 |
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Manómetros Modelo 230.15 según la directiva 94/9/CE (ATEX) E sin/con contacto eléctrico Modelo 851.3
II 2 GD c
Model 230.15 with contact Model 851.3
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Operating instructions Model 230.15 per ATEX |
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without/with Model 851.3 |
Page 3-9 |
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Betriebsanleitung Typ 230.15 nach ATEX |
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ohne/mit Typ 851.3 |
Seite 11-17 |
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Mode d’emploi Type 230.15 selon ATEX |
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sans/avec Type 851.3 |
Page 19-25 |
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Manual de instrucciones Modelo 230.15 |
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según ATEX sin/con Modelo 851.3 |
Página 27-33 |
11275945 01/2009 GB/D/F/E
11275945 01/2009 GB/D/F/E
Contents
Contents
GB
1. |
Safety instructions |
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2. |
Mechanical connection |
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3. |
Permissible ambient and working temperatures |
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4. |
Requirements for use in potentially explosive |
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atmospheres |
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5. |
Switch contacts |
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6. |
Storage |
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7. |
Maintenance and servicing / Repairs |
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8. |
Disposal |
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Enclosure 1: Declaration of conformity for Models |
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230.15 without/with switch contacts Model 851 |
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Information
This symbol provides you with information, notes and tips.
Warning!
This symbol warns you against actions that can cause injury to people or damage to the instrument.
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
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1. Safety instructions |
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Notes in accordance with the Pressure Equipment Directive |
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97/23/EC |
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The pressure gauges are "pressure accessories" in accordance |
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GB |
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with Article 1, Paragraph 2.1.4 |
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The volume of the pressure-bearing enclosure for WIKA pressure |
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gauges is < 0.1 L |
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Where the permissible working pressure exceeds 200 bar, the |
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pressure gauges carry the CE mark for Fluid Group 1G in accor- |
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dance with Annex 2, Table 1 |
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Pressure gauges that do not carry the CE mark are manufactured in |
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accordance with Article 3, Paragraph3 "sound engineering practice". |
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Applicable standards |
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EN 837-1 Bourdon tube pressure gauges, Dimensions metrology, |
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requirements and testing |
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EN 837-2 Selection and installation recommendations for pressure |
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gauges |
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1. Safety instructions |
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Before installation, commissioning and operation |
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the user must ensure that the appropriate pressure |
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gauge is selected, with regard to scale range and |
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performance and the appropriate wetted material (corrosion) for |
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the respective application‘s specific measuring conditions. |
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In order to guarantee the accuracy and long-term stability speci- |
GB/D/F/E |
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fied, the corresponding load limits must be observed. |
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Specifications: see data sheet on www.wika.de |
01/2009 |
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Only qualified personnel, authorised by the plant manager, |
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should be permitted to install, maintain and service the pressure |
11275945 |
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gauges. |
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WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
11275945 01/2009 GB/D/F/E
1.Safety instructions / 2. Mechanical connection
Hazardous pressure media (such as Oxygen, Acetylene, flammable gases or liquids, toxic gases or liquids), as well as refrigera-
tion plants or compressors, may require attention beyond that
of the standard regulations. In these instances, the appropriate GB specific safety codes or regulations must be considered.
After an external fire, all gauges must be checked and, if necessary, replaced before recommissioning the plant.
Serious injury and/or damage can occur should the appropriate regulations not be observed.
2. Mechanical connection
In accordance with the general technical regulations for pressure gauges (i.e. EN 837-2). When screwing gauges in, the force required for this must not be applied through the case or terminal box, but rather through the spanner flats (using a suitable tool) provided for this purpose.
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Spanner flats |
Sealing |
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Installation with |
Sealing face |
by the |
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thread |
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spanner |
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Correct sealing of pressure gauge connections with parallel threadsis achieved by means of suitable sealing ring, sealing washer or WIKA profile seals. The sealing of tapered threads
(e.g. NPT threads) is made by the thread itself, with additional sealing material such as, for example, PTFE tape (EN 837-2).
The torque required depends on the seal used.
In order to simplify the correct orientation of the gauge, connecting the gauge by means of a union nut or a LH-RH adjusting nut is recommended. When a blow-out device is fitted to a pressure gauge it should be resistant to blocking by debris and dirt.
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
2. Mechanical ... 4. Requirements for use ...
Requirements for the installation point
If the measuring point is not sufficiently rigid, a bracket or flange should be used to support the gauge (possibly even remotely via GB a flexible capillary line). Instruments should be protected against
coarse dirt and wide fluctuations in ambient temperature. EN 837-2 "Selection and installation recommendations for pressure gauges" should be followed.
3. Permissible ambient and working temperatures
When installing the pressure gauge it must be ensured that, taking into account the influence of convection and heat radiation, the temperature does not exceed or drop below the permissible limits for the ambient and medium temperatures. The influence of temperature on the class accuracy should also be taken into account.
4.Requirements for use in potentially explosive atmospheres
The built-in Reed switch does not have its own ignition source.
It is a ‘simple apparatus‘ in terms of intrinsic safety as defined in EN 50 020.
When powered by 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.
Operating Temperature
Ambient: -20 ... +60 °C
Medium: The permissible medium temperature does not only depend on the instrument design, but also on the ignition temperature of the surrounding gases, vapours or dust. Both aspects must be taken into account.
For permissible maximum medium temperatures see table 1.
11275945 01/2009 GB/D/F/E
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
11275945 01/2009 GB/D/F/E
...4. Requirements for use |
/ 5. Switch contacts |
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Attention! In the case of gaseous substances, the temperature may |
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increase due to compression warming. In these cases it may be |
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necessary to throttle the rate of change of pressure or reduce the |
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permissible temperature of the pressure medium. |
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Table 1: Permissible medium temperature |
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Temperature class of the |
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Permissible maximum |
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ambient atmosphere |
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medium temperature |
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(ignition temperature) |
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(in the pressure system) |
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T 6 ( > 85 °C) |
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+70 °C |
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T 5 ( > 100 °C) |
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+85 °C |
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all other temperature classes |
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+100 °C |
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5. Switch contacts
Switching function
The switching function is identified by the code ’3’. 851.3 = SPDT contact
Electrical load |
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Max. switching voltage: 24 |
VDC / VAC |
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Max. load: |
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Max. current: |
0.5 A |
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Wiring details
The electrical connections must only be made by qualified personnel
Cable output 3 m long, conductor cross section 0.14 mm2, flying leads
The terminal assignment is stated on the pressure gauge's connection plate
The gauges do not have integrated overcurrent protection. If overcurrent protection is required, this has to be provided externally.
The instruments must be connected to the equipotential bonding of the plant!
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
5. Switch contacts ... 8. Disposal
Setting the switching point
In order to adjust the switching point, the gauge should be disconnected from the voltage supply and the window unscrewed.
GB The switches are set via the mark pointer on the dial‘s circumference. The set value of the switching point is adjustable up to 80 % of the scale range.
Electromagnetic compatibility
Reed contacts are electrically passive components, which, when used in accordance with their intended use, do not affect their surroundings.
6. Storage
The pressure gauge should be kept in its original packing until installation. The gauge should be protected from external damage during storage. Storage temperature: -20 °C ... +60 °C.
Pressure gauges should be protected from dust and humidity.
7. Maintenance and servicing / Repairs
The instruments require no maintenance or servicing.
Checks should be carried out on a regular basis to guarantee the measuring accuracy of the pressure gauge. Any tests or recalibrations must be carried out by qualified personnel using the appropriate equipment.
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.
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.
11275945 01/2009 GB/D/F/E
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
Enclosure 1
GB
11275945 01/2009 GB/D/F/E
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX
GB
11275945 01/2009 GB/D/F/E
10 |
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX |
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