BS EN 837-1 PDF

It supersedes BS which is withdrawn. The UK BSI Page 3 EN 1 Scope ISO Pipe threads where pressure-tight This. BS EN Pressure gauges. Bourdon tube pressure gauges. Dimensions, metrology, requirements and testing. standard by. Accuracy class. to EN Ranges. 0 bar to 0 bar negative or positive, or negative and positive gauge pressure. Application. Constant load: .

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All types of safety pattern gauges shall meet the 9. We use cookies to make our website easier to use and to better understand your needs. The hysteresis is calculated from the difference in When calibrating pressure gauges of accuracy applied pressure for the same indication point or the classes 0,1, 0,25 and 0,6 the reference temperature shall difference 837- pressure indication for the same applied be maintained within the maximum variation permitted pressure on falling and rising pressure.

If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Copyright Copyright subsists in all BSI publications. Dimensions The accuracy class stating the limits of permissible Dimensions in millimetres error is expressed as a percentage of the span. For these tests at least five samples are required. For ranges 0 bar to 1 bar and 0 bar to 1 bar the error shall not exceed 1,5 times class.

Pressure ranges in bar: Designation for combined pressure and vacuum ranges and for vacuum ranges without plus and minus sign e.

Dimensions, metrology, requirements and testing Status: After the working pressure equal to the maximum scale test the gauge shall satisfy the requirements for value accuracy and hysteresis as given in bw. The dial shall be marked with the word 9. For details of these and other benefits contact Membership Administration.

Search all products by. A test of particular case design is considered sufficient when carried out with test energy of the pressure element that represents the highest energy source intended for this case construction. Remember me on this computer. When mounting, ensure that there is enough free space for the blow-out device, if any.

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The test method permissible error in 9.

BS EN | Mayil Vahn –

The gauge shall withstand the over-pressure shown in 9. Bourdon tube pressure gauges. Details and advice can be obtained from the Copyright Manager. Gauges with a maximum scale reading up to 25 bar shall be tested on gas. Valve and any connecting pipes or drillings shall have a flow cross section not less Licensed copy: Dimensions of taper threaded shanks Dimensions in millimetres Thread size l1 w d1 min.

The selected gauges of the same range shall be for: The test instrument shall be traceable to components shall not exceed one half of the a national or international standard. The scale interval shall be a value that represents 1 3 10n, 2 3 10n or 5 3 10n of the pressure unit, where 9. The The operation of the blow-out device or blow-out back storage volume will be connected to the pressure shall be verified, and the pressure at which it occurs gauge case connection via a valve operated at high recorded, by pressurizing the case through the speed.

Revisions British Standards are updated by amendment or revision. The test shall be made with factor is not permitted.

Click here to sign up. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.

If permission is granted, the terms may include royalty payments or a licensing agreement. Minimum length of pointer of the maximum scale value may have a free zero. Click to learn more. Accept and continue Learn more about the cookies we use and how to change your settings. Overview Product Details This European Standard specifies requirements for Bourdon eb indicating pressure gauges, vacuum gauges and combined vacuum and pressure gauges hs gaugeswith circular, spiral or coiled forms, from 40 to nominal size, and with ranges up to bar, for the measurement of gauge pressure.

Selection of gauges for type approval test Group of pressure Pressure range Minimum number of range bar sample same range A 20,6 to 0 21 to 0 21 to 0,6 21 to 1,5 21 to 3 4 0 to 0,6 0 to 1 0 to 1,6 0 to 2,5 0 to 4 B 21 to 5 21 to 9 21 to 15 21 to 24 0 to 40 4 0 to 6 0 to 10 0 to 16 0 to 25 C 0 to 60 0 to 0 to 0 to 0 to 4 D 0 to 0 to 1 0 to 1 4 NOTE.

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It does not apply to pressure gauges with electrical contacts. For 5 Pressure ranges undated references the latest edition of the publication The bar is the preferred unit of pressure.

BS EN 837-1:1998

Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. You may experience em viewing this site in Internet Explorer 9, 10 or The use of a of the gauge under test. It is the constant aim of BSI to improve the quality of our products and services.

We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, Licensed copy: A version in any other language made by translation under the responsibility of a CEN ba into its own language and notified to the Central Secretariat has the same status as the official versions.

Your basket is empty. Shock test fn as given in EN It shall then should be left undisturbed for 1 h. The time to Gauge cases intended for liquid filling shall be tested open the valve shall not exceed 50 ms, or filled and unfilled.

Dimensions of parallel threaded tapped holes Dimensions in millimetres Thread size d2 t1 t2 d1 20,5 min. A reading of zero bar is atmospheric pressure. The securing seal in order to prevent access to the parts samples to be tested, stated in table 17, shall be mentioned without destruction of surrounding selected according to table Compliance with a British Standard does not of itself confer immunity from legal obligations.

A mirror scale may be fitted in addition.