8/10/2019 sizing & selecting of diaphragm comp.pdf

1/12

%&7% 6,=,1* $1' 6(/(&7,1* ',$3+5$*0 &2035(66256

,1752'8&7,21

:KHQ FRPSUHVVRU VHOHFWLRQ FDQ QRW EH GHWHUPLQHG IURP D SHUIRUPDQFH FXUYH VL]LQJ RI

WKH FRPSUHVVRU LV QHFHVVDU\ 7KLV 7HFKQLFDO %XOOHWLQ RXWOLQHV WKH PHWKRGV WR EH XVHG IRU

WKH VHOHFWLRQ RI IUDPHV FUDQNFDVHV DQG FRQWRXU YROXPHV IRU JHQHUDO SXUSRVH DQG VSH

FLILF FXVWRPHU DSSOLFDWLRQV UHODWHG WR WKH RSHUDWLQJ SUHVVXUHV DQG WKH IORZ UDWH

'(),1,7,21 2) 7(506)RU WKH SXUSRVH RI VL]LQJ D FRPSUHVVRU WKH SULPDU\ LQWHUHVW LV LQ WKH FKDUDFWHULVWLFV DQG

TXDQWLW\ RI JDV KDQGOHG WKH LQLWLDO DQG ILQDO SUHVVXUHV WKH WHPSHUDWXUH FRQGLWLRQV DQG WKH

SRZHU UHTXLUHG $OO WRR RIWHQ WKH VSHFLILHG RSHUDWLQJ FRQGLWLRQV PD\ QRW EH SURSHUO\ GH

ILQHG DQG FRQVHTXHQWO\ WKH FRPSUHVVRU KDV QRW EHHQ DGHTXDWHO\ VL]HG IRU WKH DSSOLFDWLRQ

)/2: 5$7(

&RPSUHVVRU IORZ UDWHV PD\ EH H[SUHVVHG DV YROXPH SHU XQLW WLPH RU ZHLJKW SHU XQLW WLPH

,Q HDFK RI WKHVH FDVHV WKH UHIHUHQFH SRLQWV RI SUHVVXUH DQG WHPSHUDWXUH DUH UHTXLUHG&RPPRQ IORZ UDWH WHUPLQRORJ\ LQFOXGHV

6WDQGDUG FXELF IHHW SHU PLQXWH RU 6&)0 7KH YROXPH LV PHDVXUHG DW SVL$ DW )

673 RU VWS

,QOHW FXELF IHHW SHU PLQXWH RU ,&)0 7KH YROXPH LV PHDVXUHG DW WKH VXFWLRQ SUHVVXUH DQG

VXFWLRQ WHPSHUDWXUH

$FWXDO FXELF IHHW SHU PLQXWH RU $&)0 7KH YROXPH LV PHDVXUHG DW WKH GLVFKDUJH SUHVVXUH

DQG WKH HVWLPDWHG GLVFKDUJH WHPSHUDWXUH

2SHUDWLQJ FXELF IHHW SHU PLQXWH RU 2&)0 7KH YROXPH LV PHDVXUHG DW HLWKHU WKH VXFWLRQ

SUHVVXUHDQG VXFWLRQ WHPSHUDWXUHRU WKH GLVFKDUJH SUHVVXUHDQG WKH HVWLPDWHG GLVFKDUJH

WHPSHUDWXUH

1RUPDO FXELF PHWHUV SHU KRXU 7KH YROXPH LV PHDVXUHG DW DWP$ DW & 6730 RU VWSP

3RXQGV SHU PLQXWH RU KRXU ,EP RU ,EKU 7KH GU\ ZHLJKW LV UHTXLUHG DQG HLWKHU WKH VSH

FLILF JUDYLW\ GHQVLW\ VSHFLILF YROXPH RU PROHFXODU ZHLJKW PXVW EH JLYHQ DORQJ ZLWK WKH LQOHW

WHPSHUDWXUH

.LORJUDPV SHU PLQXWH RU KRXU NJP RU NJKU 7KH GU\ ZHLJKW LV UHTXLUHG DQG HLWKHU WKH

http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/http://glossary.pdf/

8/10/2019 sizing & selecting of diaphragm comp.pdf

2/12

%&7% 6,=,1* $1' 6(/(&7,1* ',$3+5$*0 &2035(66256

VXUH 7KHUHIRUH D JDXJH SUHVVXUH GRHV QRW LQGLFDWH WKH WUXH WRWDO JDV SUHVVXUH 7R REWDLQ

WUXH JDV SUHVVXUH LW LV QHFHVVDU\ WR DGG WKH DWPRVSKHULF RU EDURPHWULF SUHVVXUH LQ WKH

SURSHU XQLWV 7KH ZRUOG ZLGH VWDQGDUGV XVHG DUH SVL DQG NJFP :KHQ WKH

DWPRVSKHULF SUHVVXUH LV DGGHG WR JDXJH SUHVVXUH LW LV GHILQHG DV WKH DEVROXWH SUHVVXUH

DQG LV LGHQWLILHG DV SVL$ DQG NJFP$ )RU DOO FRPSUHVVRU FDOFXODWLRQV WKH DEVROXWH SUHV

VXUH LV UHTXLUHG

7(03(5$785(

7HPSHUDWXUH FDQ EH H[SUHVVHG LQ VHYHUDO GLIIHUHQW EXW LQWHUUHODWHG WHUPV 7KH WZR WHPSHU

DWXUH VFDOHV DUH )DKUHQKHLW DQG &HQWLJUDGH /LNH SUHVVXUH WKH DEVROXWH WHPSHUDWXUH LV UH

TXLUHG IRU DOO FRPSUHVVRU FDOFXODWLRQV

&219(56,21 2) 7(506

)/2: 5$7( &219(56,21

6LQFH WKH FDOFXODWLRQV DQG SHUIRUPDQFH WHVWV DUH EDVHG RQ VWDQGDUG RU QRUPDO FRQGLWLRQV

DWP$ DW & RU SVL$ DW ) FRQYHUVLRQ RI WKH IORZ UDWH DW RWKHU WKDQ VWDQGDUG FRQ

GLWLRQV LV UHTXLUHG

6&)0 IURP VWDQGDUG FXELF IHHW DW D GLIIHUHQW UHIHUHQFH WHPSHUDWXUH

4V 6&)0 7D7V

6&)0 IURP ,&)0

4V ,&)0 3V 7D7V =V

6&)0 IURP $&)04V $&)0 3G 7D7G =G

6&)0 IURP ZHLJKW IORZ ,EVPLQXWH

4V 4Z 6Y 7D7G RU

4V 4Z 6Z 7D7G RU

4V 4Z 6J 7D7G

6&)0 IURP PROH ZHLJKW IORZ4V 4P 0 7D7G

35(6685( $1' 7(03(5$785( &219(56,21

6L]LQJ FDOFXODWLRQV DUH EDVHG RQ DEVROXWH SUHVVXUH DQG WHPSHUDWXUH &RQYHUVLRQV WR DE

VROXWH SUHVVXUH DQG WHPSHUDWXUH DUH JLYHQ

8/10/2019 sizing & selecting of diaphragm comp.pdf

3/12

%&7% 6,=,1* $1' 6(/(&7,1* ',$3+5$*0 &2035(66256

5 IURP )

5 )

. IURP &

. &

&2035(6625 6,=,1* 6,1*/( 67$*(

7KH VL]LQJ PHWKRGV GLVFXVVHG LQ WKLV VHFWLRQ DUH DFFXUDWH WR ZLWKLQ SURYLGHG WKDW DOO

RI WKH IDFWRUV DUH SURSHUO\ DSSOLHG 6LQFH FRPSUHVVRU VSHHG FDQ EH LQFUHDVHG RU GH

FUHDVHG IRU DOO SUDFWLFDO SXUSRVHV WKH PHWKRGV RXWOLQHG DUH VDWLVIDFWRU\ IRU ZHOO RYHU RI WKH DSSOLFDWLRQV +LJKHU DFFXUDF\ RU %&1$ GHVLJQ MXGJHPHQW ZLOO EH UHTXLUHG LQ

WKRVH FDVHV LQYROYLQJ JDVHV KDYLQJ XQXVXDO FRPSUHVVLELOLW\ FKDUDFWHULVWLFV ([DPSOHV RI

VXFK JDVHV DUH FDUERQ GLR[LGH DQG WKH & K\GURFDUERQV

&2035(66,21 5$7,2

7KHFRPSUHVVLRQ UDWLRIRU DQ\ DSSOLFDWLRQ LV

5 3G 3V =V =G

,I WKH YDOXH FDOFXODWHG IRU 5 LV JUHDWHU WKDQ WKHQ WZR RU PRUH VWDJHV RI FRPSUHVVLRQ

PD\ EH UHTXLUHG

92/80(75,& ()),&,(1&