Model

SMC-7Series

Vertical Float Type Level Switch

ISO 9001/14001

48

FeaturesFeatures

OperationOperation

Can be used for vessel under high pressure and temperature

Designed to ASME B31.1Weather proofExplosion-proof & Frame-proofUnique and reliable : Snap acting switch mechanismVibration resistant - eliminates fake trips by special springA wide variety of chambers can be used.Multiple switches can be assembled in a unit for economical purpose.Weld procedures approved to KEPIC MQ and ASME IXMaterial certification to ASTM, ASME, JIS, KS StandardsQualified to IEEE 323-2003, and IEEE344-2004Applicable to hermetical seal type snap action switch

The electr ic contact switch operates as per theprinciple of Magnetism, and the electric contact switchis normally " relay-off " position because of tensionspring.There is magnetic steel on the edge of Float s Rod,and this magnetic steel sticks to magnet installedinside the housing when the level goes up as Fig. 1.At this time, electric contact switch turns on becausethe switch designed to " relay-on " when the magnetsticks to magnetic steel of the Float s Rod.

When the level goes down such as Fig. 2, on thecontrary, the Float goes down and accordingly themagnetic steel on the Float s edge goes down.Therefore, the magnetic steel detaches from themagnet and the switch is returning to " relay-off "position due to tension spring.

Fig.1. Switch Connected Fig.2. Switch Released

SMC-7Series Vertical Float Type Level Switch

49

This product is a unique level switch as a critical ProcessInstrument covering high pressure and high temperature.Chamber material for this product is not only carbonsteel, but also many variety steel materials including316LSS and 304SS.This product has been produced for suitable in water andboi ler contro l process, meet ing var ious industr ia lstandards and requirements to solve erroneous causesthat have occurred in conventional industrial fields.The customizing for this product is possible for specificoperational condition and anti-corrosion. Please contactour sales staff if you have any special design for thisproduct.

KOSHA (The Korea Occupational Safety and Health Agency)- ApprovalExplosion proof Ex d IIC T6(-20 AMB 60 )General Area, Weatherproof type IP65

TUV- ApprovalCertificate

EN-61010-1-2001KTL(Korea Testing Laboratory)- Tested to

verify the requirements of Nuclear Power Plant Quality Standards. IEC Pub.60068 Basic Environmental Testing Procedures

KEPIC Certificate of RegistrationMN-125

SEOJIN INSTECH has been assessed andapproved by CREBIZ QM against ISO 9001 : 2000 for the design, development, assemblyand re-calibration of precision instruments andsystems for the measurement and indication ofelectrical signals and, level, flow and water/steam systems.

With over 30 year worldwide experience in thethermal power plant, nuclear power plant andpetro-chemical industries, SEOJIN INSTECH isable to accommodate testing, surveying anddocumentation requirements as specified at thet ime of order. Inspect ion by customers ornominated inspect ion agencies can bearranged.

ApprovalsApprovals

Quality AssuranceQuality Assurance

Introduction Introduction

ISO 9001:2000/ISO 14000/2004ISO 9001:2000/ISO 14000/2004

SeriesSMC-7Series Vertical Float Type Level Switch

50

Technical SpecificationsTechnical Specifications

Switch AssembleySwitch Assembley

Least Specific Gravity of Process : 0.6 Snap Acting Switch Assembly

- Switching Type : Snap Acting Switch,Dry Contact Type

- Contact(Output) : 1 SPDT, 2 SPDT, 1 DPDT- Accuracy : 1mm, - Maximum Applicable Temperature : 400- Body Material : 304SS- Terminal Material : Pure Ceramic

Chamber- Made According to ASME B31.1,KEPIC MGE. - Material : CS(Std.), 304SS, 316SS, etc.

Float - Material : 316SS(Std.), Monel- Float Specific Gravity : Minimum 0.4- Size : SMC-73 : OD 90mm,

SMC-75 : OD 110mm, - Maximum Temperature of Process Liquid : 400- Maximum Pressure of Process :

SMC-73 : 46Bar, SMC-75 : 70Bar- Hydrostatic Test Pressure :

SMC-73 : 70Bar, SMC-75 : 105Bar

Where the product is produced with the cooling fin, themaximum allowable temperature of pressurized liquidprocess is up 500 . Except that the specific gravity shallbe beyond 0.6.

Note(1) It may only apply into the ambient temperature less than 60

Snap Acting Switch Assembly Chart

Type (Model) SM1S SM1D SM2S SM2D SM3S SM3D SM4S SM4D SM5S SM5D

Action

Max. Process Liquid Temp. (Note1)

Micro Switch Operating Temperature Range

Voltage & Current

Remark

SPDT / DPDT SPDT / DPDT SPDT / DPDT SPDT / DPDT SPDT / DPDT

120 230 230 400 400

- 25~80 - 54~200 - 54~204 - 65~260 - 65~400

250V AC 10A 250V AC 5A 250V AC 15A 115V AC 1A 250V AC 1A

125V DC 0.6A 125V DC 0.5A 125V DC 1A 28V DC 3A 30V DC 1A

hermetical seal

SMC-7Series Vertical Float Type Level Switch

51

Switch EnclosureSwitch Enclosure

Switch Action IndicatorSwitch Action Indicator

The product is designed either as a model of the extremely lowestpower consumption, or only activated when it is contacted in theswitch. Either may be it not only operated by a separated powersource in the site but also by an independent power source (drycell). It has been proved against high-thermal impact by structuringwith stainless steel body, laminating with polycarbonate resincombined with radiation component.

Body Material : Stainless Steel, PolycarbonateLight Source : LEDRange of Power Voltage : 5~24V DCAmbient Temp. : -5~60Continuous Running Time(at 25 ) by Battery :144hr* 8month life time for event action condition

Protection : NEMA 4 / IP65Installation : 1" NPT

Type (Model)

A

B

C

MaterialCover Base

Dimension Conduit entriesSpecification forProtection

Drawn CS Al Alloy

Al Alloy Al Alloy

Al Alloy Al Alloy

NEMA 4x

IP65

NEMA 4x / IP65

Ex d IIC T6

NEMA 4x

IP65

117 x 218H 3/4 PF

150 x 255H 3/4 PF

150 x 190H 3/4 PF

TYPE A TYPE B TYPE C

SMC-7Series Vertical Float Type Level Switch

52

Ordering InformationsOrdering Informations

Vertical Float Type Level Switch (4 Bottle Seal Type - Max. Pressure : 46Bar)

SMC - 73 B 1 A 1 A 1 A 1 A 1 A

PROCESS TEMP'(CONTACT RATING)A = Max.120 (10A 250V AC / 0.6A 125V DC) B = Max.230 (5A 250V AC / 0.5A 125V DC) C = Max.400 (1A 250V AC / 1A 30V DC) D = Max.230 (15A 250V AC / 1A 125V DC) E = Max.400 (1A 115V AC / 3A 28V DC)

(Hermetical Seal Type)

PROCESS CONNECTION TYPE1 = Side-Bottom(Socket Welding)(Std.) 2 = Side-Side(Socket Welding) 3 = Side-Side(Elbow Type, Socket Welding) 4 = Side-Side(Tee Type, Socket Welding)

A = MFR Std.(SEOJIN Spec.)OP = etc.(Customer Requirements)

PAINTING

1 = NONEOP = etc.

DRAIN PARTS

A = PF 3/4 (Std.)B = PT 3/4

OP = etc.

CONDUIT CONNECTION

1 = Carbon Steel(Std.) 2 = 304 SS 3 = 316 SS

CHAMBER MATERIAL

A = 316 SS(Std.) FLOAT MATERIAL

1 = 1 SPDT2 = 1 DPDT (2 SPDT)

SNAP SWITCH ACTION (OUTPUT)

B = 4 Bottle Seal Type(Max. Temp : 400 , Max. Press : 46 Bar)

MODEL SELECTION

1 = Weather Proof (Std., IP65, C.S Cover)2 = Explosion Proof (Ex d llC T6, IP65)

ENCLOSURE

A = 1 S.W(Std.) B = 3/4 S.W

PROCESS CONNECTION SIZE

TYPE 1(STD) TYPE 2 TYPE 3 TYPE 4

117

108

90

SMC-73B 4 Bottle Seal Type

53

Ordering InformationsOrdering Informations

Vertical Float Type Level Switch (5 Bottle Seal Type - Max. Pressure : 70Bar)

SMC - 75 B 1 A 1 A 1 A 1 A 1 A

PROCESS TEMP'(CONTACT RATING)A = Max.120 (10A 250V AC / 0.6A 125V DC) B = Max.230 (5A 250V AC / 0.5A 125V DC) C = Max.400 (1A 250V AC / 1A 30V DC) D = Max.230 (15A 250V AC / 1A 125V DC) E = Max.400 (1A 115V AC / 3A 28V DC)

(Hermetical Seal Type)

PROCESS CONNECTION TYPE1 = Side-Bottom(Socket Welding)(Std.) 2 = Side-Side(Socket Welding) 3 = Side-Side(Elbow Type, Socket Welding) 4 = Side-Side(Tee Type, Socket Welding)

A = MFR Std.(SEOJIN Spec.)OP = etc.(Customer Requirements)

PAINTING

1 = NONEOP = etc.

DRAIN PARTS

A = PF 3/4 (Std.)B = PT 3/4

OP = etc.

CONDUIT CONNECTION

1 = Carbon Steel(Std.) 2 = 304 SS 3 = 316 SS

OP = etc.

CHAMBER MATERIAL

A = 316 SS(Std.) B = MONEL

FLOAT MATERIAL

1 = 1 SPDT2 = 1 DPDT (2 SPDT)

SNAP SWITCH ACTION (OUTPUT)

B = 5 Bottle Seal Type(Max. Temp : 400 , Max. Press : 70 Bar)

MODEL SELECTION

1 = Weather Proof (STD, IP65, C.S Cover)2 = Explosion Proof (Ex d llC T6, IP65)

ENCLOSURE

A = 1 S.W (Std.) B = 3/4 S.W

PROCESS CONNECTION SIZE

TYPE 1(STD) TYPE 2 TYPE 3 TYPE 4117

141.3

110

SMC-75B 5 Bottle Seal Type

54

Ordering InformationsOrdering Informations

Vertical Float Type Level Switch (5 Flange Type)

SMC - 75 F 1 A 1 A 1 A 1

PROCESS TEMP'(CONTACT RATING)1 = Max.120 (10A 250V AC / 0.6A 125V DC) 2 = Max.230 (5A 250V AC / 0.5A 125V DC) 3 = Max.400 (1A 250V AC / 1A 30V DC) 4 = Max.230 (15A 250V AC / 1A 125V DC) 5 = Max.400 (1A 115V AC / 3A 28V DC)

(Hermetical Seal Type)

MOUNTING TYPEA = 5 150# ANSI RF Flange(Std.) B = 5 300# ANSI RF FlangeC = 5 600# ANSI RF FlangeD = 5 900# ANSI RF FlangeE = 5 1500# ANSI RF Flange

OP = etc.

1 = PF 3/4 (Std.)2 = PT 3/4

OP = etc.

CONDUIT CONNECTION

1 = 316 SS(Std.) 2 = MONEL

FLOAT MATERIAL

A = 1 SPDTB = 1 DPDT

SNAP SWITCH ACTION (OUTPUT)

F = 5 Bottle Flange Type (Max. Temp:400 , Max. Press:70 Bar)

MODEL SELECTION

A = Weather Proof (Std., IP65, C.S Cover)B = Explosion Proof (Ex d llC T6, IP65)

ENCLOSURE

1 = 180mm (Std., External Cage of SEOJIN INSTECH) 2 = 150 ~ 300mm (Tank Top Mounting Length = Min. 150mm)

SETPOINT

110

SMC-75F 5 Flange Type

55

Ordering InformationsOrdering Informations

Vertical Float Type Level Switch (Chamber)

SMC - 75CH A 1 A 1 A 1 A 1 A

LENGTH (CTO C)1 = 0 ~ 500mm2 = 0 ~ 1,000mm3 = 0 ~ 1,500mm4 = 0 ~ 2,000mm

OP = etc.

PROCESS CONNECTION TYPEA = Socket Welding Type(Std.)B = Flange Type

A = Hydro Test OnlyB = PT Test + Hydro Test

OP = etc.

TEST FOR WELDING

1 = MFR Std.(SEOJIN Spec.)OP = etc.(Customer Requirements)

PAINTING

1 = Carbon Steel(Std..)2 = 304 SS3 = 316 SS4 = Carbon Steel with Tefron Coating

OP = etc.

CHAMBER MATERIAL

A = 5 150# ANSI RF Flange(Std.)B = 5 300# ANSI RF FlangeC = 5 600# ANSI RF FlangeD = 5 900# ANSI RF FlangeE = 5 1500# ANSI RF Flange

OP = etc.

TOP MOUNTING SIZE

A = Side-Side(Socket Welding Type)B = Side-Bottom(Socket Welding Type)C = Side-Side(Flange Type)D = Side-Bottom(Flange Type)

OP = etc.

TYPE OF CHAMBER

A = PT 1/2 With Plug(Std.)B = PT 1/2 With Glove ValveC = None

OP = etc.

DRAIN PARTS (Side -Side Type Only)

1 = 1 (Std.) 2 = 3/43 = 1-1/24 = 2

OP = etc.

PROCESS CONNECTION SIZE

SIDE-BOTTOM (SW) SIDE-BOTTOM (FLANGE) SIDE-SIDE (SW) SIDE-SIDE (FLANGE)

SMC-75CH Chamber

56

KOSHA (The Korea Occupational Safety and HealthAgency)- ApprovalExplosion proof Ex d IIC T6(-20 AMB 60 )General Area, Weather proof Type IP65

TUV- Approval CertificateEN-61010-1-2001

KTL(Korea Testing Laboratory)- Tested to verify therequirements of Nuclear Power Plant Quality Standards. IEC Pub.60068 Basic Environmental Testing Procedures.

KEPIC Certificate of RegistrationMN-125

ApprovalsApprovals

FeaturesFeatures

Can be used to detect leaks or spills from valves,vessels, and pipe lines in plant Designed to ASME B31.1Explosion-proof & Weather proofUnique and reliable; snap acting switch mechanismVibration resistant- eliminates spurious trips by special springMultiple switches can be assembled in a unit for economical purpose.Weld procedures approved to KEPIC MQ and ASME IXMaterial certification to ASTM, ASME, JIS, KS StandardsQualified to IEEE 323-2003, and IEEE344-2004Applicable to hermetical seal type snap action switch

Alarm Signal orDrain pump power

Model

Flood Level Switch to Detect Leaks or Spills

SMC-71

57

Technical SpecificationsTechnical Specifications

Least Specific Gravity of Process: 0.6 Snap Acting Switch Assembly

- Switching type : Snap Acting Switch,Dry Contact Type

- Contact(Output) : 1 SPDT, 1 DPDT- Precision : 1mm, - Body Material : 304SS- Terminal Material: Pure Ceramic

Chamber- Made According to ASME B31.1,KEPIC MGE- Material : C.S(Std.), 316SS, etc.

Float - Material : 316SS(Std.)- Float Specific Gravity: Minimum 0.4- Size : OD 90mm, - Maximum Temperature : 250

General Technical specification

With over 30 year worldwide experience in thethermal power plant, nuclear power plant andpetro-chemical industries, SEOJIN INSTECH isable to accommodate testing, surveying anddocumentation requirements as specified at thet ime of order. Inspect ion by customers ornominated inspect ion agencies can bearranged.

Quality AssuranceQuality Assurance 150

14

Flood Level Switch to Detect Leaks or Spills

Printed by KOART. 2010. 04 98-CG-006-1. Rev:0

Specifications subject to change without notice.

#91-18 Gunja-dong, Gwangjin-gu, Seoul, KoreaTel: 82-2-2204-8500 Fax: 82-2-466-6445http://www.seojin.biz

Switch AssemblySwitch Assembly

Snap Acting Switch Assembly

Type (Model) SM1S SM1D SM3S SM3D SM4S SM4D

Action

Operating Temperature Range

Voltage & Current

Remark

SPDT / DPDT SPDT / DPDT SPDT / DPDT

-25~80 -54~204 -65~260

250V AC 10A 250V AC 15A 115V AC 1A

125V DC 0.6A 125V DC 1A 28V DC 3A

Ordering InformationsOrdering Informations

Floor Level Switch to Detect Leaks or Spills

SMC 71 A 1 A 1 A 1

1 = MFR Std.(SEOJIN Spec.)OP = etc.

PAINTING

A = PF 3/4 (Std.)B = PF 1

OP = etc.

CONDUIT CONNECTION

1 = 316SSOP = etc.

FLOAT MATERIAL

A = Carbon SteelB = 316SS

OP = etc.

WETPART MATERIAL

A = 1 SPDTB = 1 DPDT

SNAP ACTION SWITCH (OUTPUT) OPERATING TEMP' (CONTACT RATING)1 = -25 ~ 80 (10A 250V AC / 0.6A 125V DC) 2 = -54 ~ 204 (15A 250V AC / 1A 125V DC) 3 = -65 ~260 (1A 115V AC / 3A 28V DC)

(Hermetical Seal Type)

Hermetical Seal

58