VDMA-Einheitsblatt
December 1978
VDMA 4362
Kleinkolben-Kompressoren –
Bestimmung des Volumenstroms (Liefermenge)
Small-piston compressors –
Determination of volume flow rate (quantity delivered)
Continued page 2 to 8
Verband Deutscher Maschinen- und Anlagenbau e.V. (VDMA)
© Verband Deutscher Maschinen- und Anlagenbau e.V. – All rights reserved to VDMA Verband Deutscher Maschinen- und
Anlagenbau e.V., Frankfurt/Main – Modification, amendment, editing, translation, copying and/or circulation only with
permission in writing from VDMA.
Exclusive sale: Beuth Verlag GmbH, 10772 Berlin
VDMA 4362:1978-12
Price group 4
Page 2
VDMA 4362:1978-12
Contents
Page
1
Scope ..................................................................................................................................................... 3
2
Extent of measurement ........................................................................................................................ 3
3
Measurement of temperature, rotational speed and pressure ......................................................... 3
3.1
Measuring point for determination of intake-air temperature .......................................................... 3
3.2
Measuring points for determination of air temperature within the volume-flow meter................. 3
3.3
Measurement of temperature with thermometer ............................................................................... 3
3.4
Measurement of rotational speed of the compressor ....................................................................... 3
3.5
Operating overpressure and its measurement .................................................................................. 3
4
Measurement of volume flow rate and conversion to intake state and rated speed ..................... 4
4.1
Run time before reading measuring equipment ................................................................................ 4
4.2
Permissible deviation (tolerance) of temperature and pressure during measurement ................ 4
4.3
Measuring procedure ........................................................................................................................... 4
4.4
Determination of volume flow rate ...................................................................................................... 4
4.4.1
General................................................................................................................................................... 4
4.4.2
Measuring procedure ........................................................................................................................... 5
4.4.3
Calculation of the compressor’s volume flow rate ........................................................................... 5
5
Calculation of volumetric efficiency ................................................................................................... 6
6
Test report ............................................................................................................................................. 6
Page 3
VDMA 4362:1978-12
The following recommendations regarding the uniform measurement of the volume flow of small-piston
compressors have been established to facilitate the comparability of information given by manufacturers.
The statement “volume flow rate according to VDMA 4362” shall only be used if the volume flow rate has been
determined according to this specification and if the small-piston compressors under test comply with the
accident prevention regulations (in particular VBG 16 and VBG 17).
1
Scope
This specification applies to small-piston compressors with volume flow rates up to 2 m3/min and maximum
overpressures of 40 bar.