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It supersedes BS which is withdrawn.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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Your basket is empty. For dated references, subsequent See table 2 for dimensions. All types of safety pattern gauges shall meet the 9.

BS EN 837-1:1998

Spiral f If the customer requires the gauge to be calibrated at other than the reference temperature this shall be marked. After the working pressure equal to the maximum scale test the gauge shall satisfy the requirements for value accuracy and hysteresis as given in 9. Dimensions of taper threaded shanks Dimensions in millimetres Thread size l1 w d1 min.

The blow-out back shall be resistant to blocking by debris and dirt and shall operate at a pressure of not more than half of the window burst pressure and not more than 1,5 bar.

Gas used for the energy release test shall be stored in a volume within the test equipment 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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A mirror scale may be fitted in addition.

BS EN | Mayil Vahn –

Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 21 and a back cover. Minimum number of minor scale divisions Scale Nominal size Minimum number of minor scale divisions Accuracy classes 0,1 0,25 0,6 1 1,6 2.

Figure 8 d Gauges suitable for maximum steady working pressure equal to the maximum scale value shall Table The hysteresis is calculated from the difference in When calibrating pressure gauges of accuracy applied pressure 87-1 the same indication point or the bz 0,1, 0,25 and 0,6 the reference vs shall difference in pressure indication for the same applied be maintained within the maximum variation permitted enn on falling and rising pressure.

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.

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, metrology, requirements and testing Status: It shall then should be left undisturbed for 1 h. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.

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Shock test equipment as given in EN The gauge shall withstand the over-pressure shown in 9. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

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Contact the Information Centre. Dimensions The accuracy class stating the limits of eb Dimensions in millimetres error is expressed as a percentage of the span. Then the error when be tested similarly inclined backwards, to the right, tested in accordance with Please download Chrome or Firefox or view our browser tips.

The choice of the sealing washer material depends on the pressure and the fluid to be measured.

The maximum scale value is a test point. The selection of the samples out of each group as well as the sequence of testing are at the manufacturer’s discretion. The air bubble size in the case shall either be correct or the case shall be fully filled Constructional requirements of 9.

Help Center Find new research papers in: Take the smart route to manage medical device compliance. Enter the email address you signed up with and we’ll email you a reset link. Designation, dimensions and indicating eh gauges, vacuum gauges and tolerances combined vacuum and pressure gauges compound ISO When testing in the filled The blow-out device or back will then be blocked and condition the gauge inlet to the case may be the burst pressure of the window will be measured.