Table of Contents
Advertisement
Quick Links
,QVWUXFWLRQ 0DQXDO
)RUP 8594
-XQH 4<<<
Type 646 Electro-Pneumatic Transducers
Introduction
Scope of Manual
7KLV LQVWUXFWLRQ PDQXDO SURYLGHV LQVWDOODWLRQ/ RSHUD0
WLRQ/ PDLQWHQDQFH/ DQG SDUWV RUGHULQJ LQIRUPDWLRQ IRU
WKH 7\SH 979 WUDQVGXFHU1 5HIHU WR VHSDUDWH PDQXDOV
IRU LQVWUXFWLRQV FRYHULQJ HTXLSPHQW XVHG ZLWK WKH
WUDQVGXFHU1
2QO\ SHUVRQQHO TXDOLILHG WKURXJK WUDLQLQJ RU H[SHULHQFH
VKRXOG LQVWDOO/ RSHUDWH/ DQG PDLQWDLQ WKLV WUDQVGXFHU1 ,I
\RX KDYH DQ\ TXHVWLRQV FRQFHUQLQJ WKHVH LQVWUXFWLRQV/
FRQWDFW \RXU )LVKHU &RQWUROV VDOHV RIILFH RU VDOHV UHS0
UHVHQWDWLYH EHIRUH SURFHHGLQJ1
Description
7KH WUDQVGXFHU/ VKRZQ LQ ILJXUH 4/ UHFHLYHV D 7 WR 53
PLOOLDPSHUH GF LQSXW VLJQDO DQG WUDQVPLWV D SURSRUWLRQ0
DO 6 WR 48 SVLJ +315 WR 413 EDU, SQHXPDWLF RXWSXW SUHV0
VXUH WR D ILQDO FRQWURO HOHPHQW1 $ W\SLFDO DSSOLFDWLRQ LV
LQ HOHFWURQLF FRQWURO ORRSV ZKHUH WKH ILQDO FRQWURO HOH0
PHQW LV D FRQWURO YDOYH DVVHPEO\ WKDW LV SQHXPDWLFDOO\
RSHUDWHG1 7KH LQSXW VLJQDO DQG RXWSXW SUHVVXUH UDQJH
RI WKH WUDQVGXFHU LV LQGLFDWHG RQ WKH QDPHSODWH/ VKRZQ
LQ ILJXUH 5/ DWWDFKHG WR WKH KRXVLQJ1
CAUTION
Dropping or rough handling of the
transducer can cause damage to the
converter module resulting in a shifted
output or a minimum output.
Specifications
6SHFLILFDWLRQV IRU WKH 7\SH 979 WUDQVGXFHU DUH OLVWHG LQ
WDEOH 41
:9:;6042,/
Figure 1. Electro-Pneumatic Transducer
Mounted on a Sliding-Stem Actuator
Installation
Mounting
:KHQ D WUDQVGXFHU LV RUGHUHG DV SDUW RI D FRQWURO
YDOYH DVVHPEO\/ WKH IDFWRU\ PRXQWV WKH WUDQVGXFHU RQ
WKH DFWXDWRU DQG FRQQHFWV WKH QHFHVVDU\ WXELQJ/ WKHQ
DGMXVWV WKH WUDQVGXFHU DV VSHFLILHG RQ WKH RUGHU1
7UDQVGXFHUV DOVR FDQ EH RUGHUHG VHSDUDWHO\ IRU
PRXQWLQJ RQ D FRQWURO YDOYH DVVHPEO\ DOUHDG\ LQ VHU0
YLFH/ RU IRU PRXQWLQJ RQ D 50LQFK GLDPHWHU SLSHVWDQG/ D
IODW VXUIDFH/ RU D EXONKHDG1 7KH WUDQVGXFHU PD\ EH
RUGHUHG HLWKHU ZLWK RU ZLWKRXW PRXQWLQJ SDUWV1 0RXQW0
LQJ SDUWV LQFOXGH D PRXQWLQJ SODWH DQG EROWV DQG/ LI
RUGHUHG IRU SLSHVWDQG PRXQWLQJ/ D SLSH FODPS1 7XELQJ
LV QRW LQFOXGHG LI WKH WUDQVGXFHU LV QRW IDFWRU\
7\SH 979
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Fisher 646
Summary of Contents for Fisher 646
-
Page 1: Specifications
,QVWUXFWLRQ 0DQXDO )RUP 8594 7\SH 979 -XQH 4<<< Type 646 Electro-Pneumatic Transducers Introduction Scope of Manual 7KLV LQVWUXFWLRQ PDQXDO SURYLGHV LQVWDOODWLRQ/ RSHUD0 WLRQ/ PDLQWHQDQFH/ DQG SDUWV RUGHULQJ LQIRUPDWLRQ IRU WKH 7\SH 979 WUDQVGXFHU1 5HIHU WR VHSDUDWH PDQXDOV IRU LQVWUXFWLRQV FRYHULQJ HTXLSPHQW XVHG ZLWK WKH... - Page 2 7\SH 979 Table 1. Specifications VWUHQJWK RI 63 92P1 7UDQVGXFHU LV WHVWHG ZLWK KRXV0 Input Signal LQJ FDS RQ DQG ZLWK H[WHUQDO ZLULQJ LQ ULJLG PHWDO 7 WR 53 P$ GF/ FRQVWDQW FXUUHQW ZLWK 63 9GF PD[L0 FRQGXLW1 PXP FRPSOLDQFH YROWDJH 7KLV LQVWUXPHQW KDV WKH &( PDUN LQ DFFRUGDQFH ZLWK WKH (OHFWURPDJQHWLF &RPSDWLELOLW\ +(0&, 'LUHF0 Equivalent Circuit...
-
Page 3: Diagnostic Connections
42;0LQFK 137 ERG\ DQG ERG\ SURWHFWRU1 Note Pneumatic Connections If the Type 646 transducer is used in a $V VKRZQ LQ ILJXUH 7/ DOO SUHVVXUH FRQQHFWLRQV RQ WKH valve assembly with a positioner, no WUDQVGXFHU DUH 4270LQFK 137 IHPDOH FRQQHFWLRQV1 8VH hook-up for diagnostic testing is re- 62;0LQFK WXELQJ IRU DOO SUHVVXUH FRQQHFWLRQV1 5HIHU WR... - Page 4 $9;4904 2 ,/ Figure 4. Dimensions and Connections STEM PROVIDED WHEN GAUGE IS SPECIFIED GAUGE BODY PROTECTOR BODY BODY BODY PROTECTOR PIPE BUSHING PIPE TEE PIPE BUSHING PIPE NIPPLE FRONT OUTPUT SIDEOUTPUT 45%;373ï$ %56<8ï42,/ Figure 5. Diagnostics Hookup for Type 646 Transducer...
-
Page 5: Electrical Connections
7\SH 979 Vent TRANSDUCER TERMINAL BLOCK HOUSING WARNING CONTROL FIELD WIRING DEVICE ï ï If a flammable, toxic, or reactive gas is ï to be used as the supply pressure me- dium, personal injury and property dam- age could result from fire or explosion of accumulated gas or from contact with toxic or reactive gas. -
Page 6: Operating Information
7\SH 979 Operating Information PRINTED WIRING BOARDS ZERO $Q RSHUDWLRQDO 7\SH 979 WUDQVGXFHU/ ZLWK WKH LQSXW ADJUSTMENT VLJQDO UHPRYHG DQG WKH RXWSXW OLQH RSHQHG/ SURGXFHV SPAN D UHODWLYHO\ KLJK0YROXPH/ ORZ SUHVVXUH RXWSXW1 (YHQ ADJUSTMENT FIELD WIRING WKRXJK WKH RXWSXW SUHVVXUH LV ORZ +OHVV WKDQ 5 SVLJ RU •... -
Page 7: Troubleshooting
71 :KHQ WKH LQSXW FXUUHQW LV UHPRYHG/ WKH WUDQVGXFHU on a Type 646 that carries a third-party RXWSXW SUHVVXUH VKRXOG GURS WR OHVV WKDQ 5 SVLJ +3147 approval. When you replace compo-... -
Page 8: Relay Maintenance
7\SH 979 Converter Module Replacement VALVE PLUG (KEY 14) Removal 5HIHU WR ILJXUH 44 IRU NH\ QXPEHU ORFDWLRQV1 ONE OF THREE TABS ON VALVE PLUG 41 5HPRYH WKH KRXVLQJ FDS +NH\ 7,1 51 1RWH WKH ORFDWLRQ RI WKH ZLUHV/ WKHQ UHPRYH WKH HOHFWULFDO ZLULQJ IURP WKH WHUPLQDO EORFN PRXQWHG RQ WKH SULQWHG ZLULQJ ERDUG1 61 5HPRYH WKH WZR VFUHZV +NH\ 4<, DQG UHPRYH WKH... -
Page 9: Parts Ordering
Parts Kits Note Type 646 Transducer Repair Kit If the Type 646 Transducer is used in a valve ,QFOXGHV NH\V 9/ ;/ </ 43/ 45/ 46/ 47/ DQG assembly with a positioner, no hook-up for 4;1 7KH 20ULQJ IRU WKH FRQYHUWHU PRGXOH diagnostic testing is required for the Type 646. - Page 10 7\SH 979 Description Part Number Description Part Number :DVKHU/ FDUERQ VWHHO SO :LWK 9: +7 UHT·G, 4&558:5;<;5 Mounting Parts :LWKRXW 9: +5 UHT·G, 4&558:5;<;5 +H[ QXW/ VWHHO SO Yoke Mounting With Type 67 :LWK 9: +7 UHT·G, 4$685:57455 :LWKRXW 9: +5 UHT·G, 4$685:57455 )RU 7\SHV 7:3 ) 7;3 VL]HV 630463>...
- Page 11 7\SH 979 CONVERTER MODULE NOTE: KEY NUMBER 49 IS NOT SHOWN APPLY LUB/SEALANT Figure 11. Type 646 Transducer Assembly 74%56:6ï(2'2&...
- Page 12 SUPPLY OUTPUT NOTES: 3/8-INCH TUBING SUPPLIED ONLY WHEN 646 IS FACTORY MOUNTED KEY NUMBERS 24, 25, 27, 32, 33, 37, 38, 39 ARE NOT SHOWN. 6;E6<8;0$ %56;405 2 ,/ Figure 12. Typical Type 646 Mounting With Type 67CFR Filter Regulator...
-
Page 13: Loop Schematics
7\SH 979 Loop Schematics 7KLV VHFWLRQ LQFOXGHV ORRS VFKHPDWLFV UHTXLUHG IRU ZLULQJ WLRQV/ FRQWDFW \RXU )LVKHU &RQWUROV VDOHV UHSUHVHQWDWLYH RI LQWULQVLFDOO\ VDIH LQVWDOODWLRQV1 ,I \RX KDYH DQ\ TXHV0 RU VDOHV RIILFH1 CSA Schematics NO CHANGE IN PART OR VENDOR OF PART ALLOWED WITHOUT PRIOR APPROVAL OF : CSA 54%89390% 6KHHW 4 RI 5 2 '2&... - Page 14 Thecontents o fthispublication a represented f orinformational purposes o nly,andwhileeveryeffort h asbeenmade toensure theiraccuracy, theyarenottobeconstrued a swarranties o rguarantees, express orimplied, r egarding t heproducts o rservices d escribed h erein ortheiruseorapplicability. Wereserve therighttomodify orimprove thedesigns orspecifications ofsuchproducts a tanytimewithout n otice. For information, contact Fisher Controls: 0DUVKDOOWRZQ/ ,RZD 8348; 86$ &HUQD\ 9;:33 )UDQFH...
Need help?
Do you have a question about the 646 and is the answer not in the manual?
Questions and answers