Enclosure : Cast Al, WP IP-66, Ex-proof Gr.IIA & IIB or IIC

Conduit Connection : Brass ¾"ET or ½" NPT

Measuring range : 200mm ~ 15000mm

Operating Differential : 40-±5mm / 65±5mm depending on const. type.Switch Type / Action : Microswitch with Bistable action.

Switch Contacts : 2SPDT(DPDT) @ 5A, 250VAC (Resistive)

Terminals : To suit 1.5mm 2 conductor

Flexible Rope : SS304, SS316, PP, PTFE

Displacer : SS304, SS316, PP, PVDF

Spring Housing : SS316, PP, PTFE

Process Connection : Flanged - CS, SS304, SS316, PP & PTFE (MS clad)

Perforated Still Well : 65NB, CS, SS304, SS316, PP

External Cage : 80NB, CS, SS304, SS316, PP

Max Temperature : 0~200°C / 0~300°C (with radiating fins)

Max Test Pressure : Vacuum to 40Kg/cm²Min Sp. Gravity : 0.8

Wide choice of switching functions.

Suitable for large tanks-15 meters with easy of transportation.

Site adjustable switching points.

Customised for high temp., high pressure & vacuum service.

Reliable performance in turbulent liquids even without still pipes.

Enclosure: WP IP-66, Ex-proof Gr IIA & IIB or IIC.

Option of sealed micro switch.

SPECIFICATIONS :

FEATURES :

Displacer Type Magnetic Level Switch - 'DS'

CONSTRUCTION & OPERATION (Fig 1) :

Installation : The switch can be installed internally or externally as shown in Fig.2.. Perforated still well isrecommended for tanks with excessive turbulent liquids. The microswitch contacts being rated for 5A at 230VAC can bedirectly wired to control devices viz. Solenoid valve or pumps, through a PVC cable of 1.5mm2

CE certified option available as per 73/23/EEP for W.P. enclosure only

High Temp arrangement

RadiatingFins

ProcessConn.

Displacer

ProcessConn.

DrainPlug

VentPlug

External cageInternal direct

ProcessConn.

Inst

all

ati

on

&W

irin

gFig

.2 Perforated still well

Perforatedstill well

ProcessConn.

SINCE 1984

Large Sumps & Fuel Tanks, Boiler Feed Water, Waste Water & Sewage,

Interface Liquids, Petrochemical, Nuclear Power, Generator Sealing Liquid.

APPLICATIONS :

A suspended displacer from a flexible wire rope is connected to a coupler

(magnetic system) moving within a seal pipe via a compression spring.

The rising liquid level exerts a buoyant force on the coupler in proportion to

displaced liquid (Archimedes Principle) which compresses the spring and

moves the actuator within the field of the magnetic system to actuate the

switch. During "falling level", the spring assumes its normal position to

release the switch.

Fig. : 1

Optg. Diff. for water : 40mm±5mm(1 switch carriage x 1 displacer)

WATER

FALL

ING

LEVEL

RIS

ING

LEVEL

Switch releasedSwitch actuated

P

NO

NC

DISPLACER

P

NO

NC

Switch with magnet

Seal pipe

Comp`n spring

Coupler

Flexiblewire rope

Displacer

Actuator

x Range (mtrs)Model Identification : DS -

Custom built specs./options available on demand. We reserve the right to modify design and specifications without prior notice. CAT/014/Rev-03/01-12

ORDERING INFORMATION :

Model x Range (mm) x Liquid & its Sp.Gr. x Optg.Temp x Pressure

Construction(Switch Carriage x Displacer)One x OneOne x TwoTwo x TwoTwo x ThreeThree x Three (Encl. E / J only)Two x Four

EnclosureCast Al WP IP-66 x ¾"ET.Cast Al Ex-proof Gr.IIA & IIB x ½" NPTCast Al Ex-proof Gr.IIC x ½" NPTNon-std.

Displacer MOCSS304SS316PPPVDFNon-std.

Process Conn MOCCSSS304SS316PP (MS Clad)PTFE (MS Clad)Non-std.

Process Conn80 NB, ASA 150 # Flange80 NB, BS-10 T`D' FlangeNon-std

InstallationInternal DirectPerforated Still Well in CSPerforated Still Well in SS304Perforated Still Well in SS316Perforated Still Well in PPExternal Cage with 1" NB Flange in CSExternal Cage with 1" NB Flange in SS304External Cage with 1" NB Flange in SS316Non-std.

High Temp. ArrangementNot providedProvided

ABCDEF

JEFO

NSPFO

MNSPTO

12O

12345678O

RH

Construction : By configurating, the number of Switch Carriages andDisplacers the switch is used for several switching functions.

Fig. 3

Dual switching2SPDT (DPDT)

Triple switching2SPDT (DPDT)

Single switching2SPDT (DPDT)

NCNO P

NCNO P

L1

NCNO P NCNO P

NCNO P NCNO P

L1

L2

NCNO P

L2

NCNO P

L3

NCNO P

L1

NCNO P NCNO P NCNO P

www.punetechtrol.comho@punetechtrol.com

+91-20-66342998

+91-20-66342900, 27121052

S-18, MIDC, Bhosari, Pune - 411026. India

PUNE TECHTROL PVT LTD

All

dim

ensi

ons

inm

m,exc

ept

speci

fied.

AREA REPRESENTATIVE / DISTRIBUTOR :

CUSTOMER FRIENDLY NOTES :

Optg. diff. varies inversely with liquid density.'Set Point' - Dist. from flange bottom to actuation point& is site adjustable by relocating the displacer position.Min. Dist. between two set pts. = 200mm.Max. Dist. between set pts. = L-300mm. (L=Length offlexible rope)

Co

nst.

A

Co

nst.

B

Ø105

Displacer

One switchcarriage

Head

Cle

ara

nce

440

185

(appro

x)

L1(m

in)

200m

m

One switchcarriage

L1

(min

)200

mm

L2

Co

nst.

D

Dual switching with fixeddifferential (two std displacers)

Dual switching, one no fixeddifferential, second no withadjustable differential

Two switchcarriages

L1(m

in)

200m

m

L(m

ax

15

Mtr

s.)

L3L2

Co

nst.

C

L1(m

in)

200m

m

L2

Two switchcarriages

Ø120

320

(appro

x)

Head

Cle

arn

ace

650

Triple switching with fixeddifferential (three std displacers)

Dual switching with adjustabledifferential (four split displacers)

Co

nst.

E

Co

nst.

FØ120

Two switchcarriages

L1(m

in)

200m

m

L3L2

320

(appro

x)

L4

L1(m

in)

200m

m

L3L2

Ø124

390

(appro

x) Threeswitchcarriages

Head

Cle

ara

nce

720

Single switching with fixeddifferential (one std displacer)

Single switching with adjustabledifferential (two split displacers)

TE

RM

INA

TIO

N