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It supersedes BS which is withdrawn.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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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.

The test shall be made with factor is not permitted. Skip to main content. Safety pattern gauges with baffle wall shall additionally meet the requirements defined in 9. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services.

BS EN 837-1:1998

For e with combined pressure and under pressure: The test method permissible error in 9. Minimum height h of flats shall be compatible with use of standard spanners according to ISO Only lubricants suitable energy gas into the case.

The gauge shall withstand the over-pressure shown in 9. Shock test equipment as given in EN In this case, the length of threading shall be equal to l1. For production piece testing of all other lightly tapped. The maximum scale enn is a test point. If permission is granted, the terms may include royalty payments or a licensing agreement.

BS EN | Mayil Vahn –

In response to orders for international standards, it is BSI policy to supply 837–1 BSI implementation of those that have been published as British Standards, unless otherwise requested. Find Similar Items This product falls into the following categories. The dial shall be marked with the word 9. Production piece tests shall be carried out on each gauge accuracy class 0,1 to 0,6.

Dimensions of parallel threaded tapped holes Dimensions in millimetres Thread size d2 t1 t2 d1 20,5 min. We use cookies to make our website easier to use and to better understand your needs.


Log In Sign Up. Type of mounting and connection position Radial connection 10 11 12 Licensed copy: After this test measuring The tests for the requirements given in 9.

A reading of zero bar is atmospheric pressure. When mounting, ensure that there is enough free space for the blow-out device, if b. The baffle wall shall form a permanently fixed structural part of the case interposed between the 9.

Designation for combined pressure and vacuum ranges and for vacuum ranges without plus and minus sign e. The length of any connecting piping device shall be sealed with a low strength sealant. Type of Bourdon tube Symbol e The symbol for the dial plane shall be marked when the manufacturer is required to calibrate the Circular gauges other than in the vertical position see figure 9. This applies to 0,1, 0,25 and 0,6 class gauges. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies.

Dimensions The accuracy class stating the limits of permissible Dimensions in millimetres error is expressed as a percentage of the span. Dimensions, metrology, requirements and testing BS EN The standard applies to gauges suitable for industrial use with common industrial fluids. For 5 Pressure ranges undated references the latest edition of the publication The bar is the preferred unit of pressure.

It supersedes BS Gauge nominal size Minimum length of pointer mm mm 9. Compliance with a British Standard does not of itself confer immunity from legal obligations. 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 in pressure indication for the same applied be maintained within the maximum variation permitted pressure on falling and rising pressure.

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. 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.


It does not apply to pressure gauges with electrical contacts. The choice of the sealing washer material depends on the pressure and the fluid to be measured. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations.

Dimensions of sealing washers Dimensions in millimetres 7. All materials liable to come into contact with oxygen or acetylene shall comply with EN The vibration test is required for gauges of accuracy classes 1 to 4 only.

Contact the Information Centre. Dimensions of taper threaded shanks Dimensions in millimetres Thread sb l1 w d1 min. This European Standard specifies requirements for Bourdon tube indicating pressure gauges, vacuum gauges and combined vacuum and pressure gauges compound gaugeswith circular, spiral or coiled forms, from 40 to nominal size, and with ranges up to bar, for the measurement of gauge pressure.

The time to Gauge cases intended for liquid filling shall be tested open the valve shall not exceed sn ms, or filled and unfilled. Pressure gauges of accuracy classes 0,25 and 0,6 shall incorporate provisions to minimize parallax errors, such as a knife edge pointer. Please download Chrome or Firefox or view our browser tips. Maximum permissible errors The test methods for these requirements are given in Accuracy Limits of permissible error percentage of clause It also applies to liquid-filled gauges, gauges for high pressure gases and gauges for use with oxygen or acetylene.

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