Emerson T205 Datasheet

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Bulletin 74.1:T205
December 2014
D103747X012
Contents
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Overpressure Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Capacity Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Features
Low-pressure setting and fast speed of response –
T205 Series regulator has a low-pressure setting as
low as 1 in. w.c. / 2.5 mbar. It can respond quickly to
downstream  ow demand and pressure changes due to
direct-operated structure.
Accurate control and small lockup pressure – Large
diaphragm area provides very accurate throttling control
at low pressure settings. An added bene t of lever style
regulator is that it can shut off the process uid using small
lockup pressure.
Multiple applications – T205 Series regulator can be used
for a wide variety of gases including air, nitrogen, natural
gas, sour gas (NACE Construction), butane and propane.
Corrosion resistance – Multiple regulator constructions
are available in a variety of materials for compatibility with
corrosive process gases.
Easy conversion between constructions – Converts
easily from the Type T205 to the Type T205M with two
O-rings and one machine screw.
Sour gas service capability – Available construction to
meet NACE MR0175-2002.
www.fisherregulators.com
T205 Series Tank Blanketing Regulators
Figure 1. Type T205 Tank Blanketing Regulator
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Summary of Contents

Page 1 - Bulletin 74.1:T205

Bulletin 74.1:T205December 2014D103747X012ContentsFeatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Introducti

Page 2

Bulletin 74.1:T20510SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPOINTINLETPRESSURECAPACITIES IN SCFH / Nm3/h OF AIROrice Size, In. / m

Page 3

Bulletin 74.1:T20511Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body SizeSPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPOINT

Page 4

Bulletin 74.1:T20512Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET F

Page 5

Bulletin 74.1:T20513Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET F

Page 6

Bulletin 74.1:T20514SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPOINTINLETPRESSURECAPACITIES IN SCFH / Nm3/h OF AIROrice Size, In. / m

Page 7

Bulletin 74.1:T20515Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body SizeSPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPO

Page 8

Bulletin 74.1:T20516Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSE

Page 9

Bulletin 74.1:T20517Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSE

Page 10

Bulletin 74.1:T20518Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSE

Page 11

Bulletin 74.1:T20519Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body SizeSPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPOI

Page 12

Bulletin 74.1:T2052Specications The Specications section on this page provides the ratings and other specications for the T205 Series. Factory spec

Page 13

Bulletin 74.1:T20520Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET

Page 14

Bulletin 74.1:T20521Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET

Page 15

Bulletin 74.1:T20522SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPOINTINLETPRESSURECAPACITIES IN SCFH / Nm3/h OF AIROrice Size, In. / m

Page 16

Bulletin 74.1:T20523Table 11. Cv Coefcient of T205 Series with 3/4 in. / DN 20 Body SizeSPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SET

Page 17

Bulletin 74.1:T20524- continued -SPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SETPOINTINLET PRESSURECv COEFFICIENTOrice Size, In. / mm 1

Page 18

Bulletin 74.1:T20525- continued -SPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SETPOINTINLET PRESSURECv COEFFICIENTOrice Size, In. / mm 1

Page 19

Bulletin 74.1:T20526SPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SETPOINTINLET PRESSURECv COEFFICIENTOrice Size, In. / mm 1/8 / 3.2 1/4

Page 20

Bulletin 74.1:T20527- continued -SPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SETPOINTINLET PRESSURECv COEFFICIENTOrice Size, In. / mm 1

Page 21

Bulletin 74.1:T20528- continued -SPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SETPOINTINLET PRESSURECv COEFFICIENTOrice Size, In. / mm 1

Page 22

Bulletin 74.1:T20529SPRING RANGE AND COLOROUTLET PRESSURE SETTINGOFFSET FROM SETPOINTINLET PRESSURECv COEFFICIENTOrice Size, In. / mm 1/8 / 3.2 1/4

Page 23

Bulletin 74.1:T2053Figure 2. Type T205 with Internal Registration Operational SchematicsFigure 3. Type T205M with External Registration Operational Sc

Page 24

Bulletin 74.1:T20530Figure 6. Dimensions8.38 / 212.96.18 / 15710.37 / 263.41.59 / 40.42.25 / 57.24.12 / 104.65.58 / 141.6NPT1/2 NPT CONTROL LINE CONNE

Page 25

Bulletin 74.1:T20531Ordering InformationWhen ordering, complete the ordering guide on this page. Refer to the Specications section on page 2. Review

Page 26

Bulletin 74.1:T205©Emerson Process Management Regulator Technologies, Inc., 2013, 2014; All Rights ReservedThe Emerson logo is a trademark and service

Page 27

Bulletin 74.1:T2054Figure 4. T205 Series Actuator Casing Drainage SchematicINLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSUREDOWNSTREAM CONTROL PRESSUR

Page 28

Bulletin 74.1:T2055Table 1. Body Sizes, End Connection Styles and Maximum Allowable Inlet PressureBODY SIZEBODY MATERIAL END CONNECTION STYLE(1)MAXIMU

Page 29

Bulletin 74.1:T2056Table 6. Correction Factors (For converting Air Flow Rates to Other Gas Flow Rates)(1) InstallationThe regulator may be installed i

Page 30

Bulletin 74.1:T2057SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET FROM SETPOINTINLETPRESSURECAPACITIES IN SCFH / Nm3/h OF AIROrice Size, In. / mm

Page 31

Bulletin 74.1:T2058Table 7. Flow Capacities of Type T205 with 3/4 in. / DN 20 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET

Page 32

Bulletin 74.1:T2059Table 7. Flow Capacities of Type T205 with 3/4 in. / DN 20 Body Size (continued)SPRING RANGE AND COLOROUTLETPRESSURESETTINGOFFSET

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