We have various type of Pressure Switches based on sensing elements - * Diaphragm operated Pressure Switches * Piston operated Pressure Switches. Based on type of enclosures, also various options in Pressure Switches are available - * Dust proof Pressure Switches (IP40) * Weatherproof Pressure Switches ( IP54 Pressure Switches, IP65 Pressure Switches, IP66 Pressure Switches) * Exproof Pressure Switches ( Flameproof Pressure Switches to group IIA & IIB, Flameproof Pressure Switches to group IIC) Based on type of type of Micro Switches also there are varieties - * Fixed Differential type Pressure Switches * Adjustable Differential type Pressure Switches. * 2 SPDT type Pressure Switches These type of Switches are available in Weatherproof and as well as Flameproof versions. All these Pressure Switches are used interlocks & annunciation purpose. We also have High proof Pressure Switches, which are used for applications where the process pressures are very high than the set pressure. We have Air Relay Pressure Switches can be used in Flamable areas or, when only air supply is available and electrical supply is not present.

1. MT Low Range
Pressure Switches
C A T A L O G U E
BULLETIN NO. : KA160822
Website : http://www.orion-instruments.com
Kaustubha Udyog AN ISO9001:2008 COMPANY
S. No. 36/1/1, Sinhgad Road, Vadgaon Khurd,
Near Lokmat Press, Pune 411 041 INDIA
Tel.
Telefax
Email
: +91-(0) 20-24393577 / 24393877
: +91-(0) 20-24393577 / 25460486
: pressure@vsnl.com
PRESSURE SWITCHES
PRESSURE DIFFERENCE SWITCHES
VACUUM SWITCHES
From 1.5 mbar to 600 bar
Certificate No.: FM72815

2. LOW RANGE PRESSURE SWITCHES
75
BULLETIN NO. : KA160822
MT
2
INSTALLATION DRAWING
APPROX. DIMENSIONS IN
mm
inches
PRESSURE CAPSULE DETAILS
Note : wetted parts are mentioned in italics. *Presure ports are brazed with flange
Description
Pressure port (S.S.)
Support spring (S.S.)
Bottom flange (S.S.)
Support plate (Aluminium)
Diaphragm (Neoprene)
Gasket (Teflon)
Top plate (Aluminium)
Top flange (S.S.)
Plunger
Top flange screw (S.S.)
Sealing 'O' ring (Nitrile)
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
1
2
9
3
4
5
6
7
8
10
11
98.0
(3.85)
31
(1.22)
87
(3.42)
65
(2.55)
Pressure port
1/4" BSP(F)
51
(2.0)
118
(4.64)
Ø130
(5.11)
Mounting Holes, Ø7
2 NOS
51
(2.0)
18
(0.70)
31
(1.22)
130.0
(5.11)
158
(6.27)
1/4" BSP(M)
Mounting Nut

3. RANGE SELECTION TABLE
L02
L03
L05
L10
L15
L25
L35
1.5 - 15.0
(0.602 - 6.021)
5.0 - 25.0
(2.007 - 10.037)
10.0 - 50.0
(4.015 - 20.073)
10.0 - 100.0
(4.015 - 40.146)
10.0 - 150.0
(4.015 - 60.22)
20.0 - 250.0
(8.029 - 100.36)
50.0 - 350.0
(20.073 - 140.52)
Differential* mbar ("wc)
2
(29.00)
2
(29.00)
2
(29.00)
2
(29.00)
2
(29.00)
2
(29.00)
2
(29.00)
Range Code Range
mbar ("wc)
Maximum Working
Pressure bar (psi)
3
(1.204)
5
(2.007)
5
(2.007)
10
(4.015)
10
(4.015)
15
(6.021)
25
(10.036)
Approximate
Maximum
for "A1"
microswitch
MT
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BULLETIN NO. : KA160822
3
*Minimum differential increases with setpoint (Graphs available on request)
* Differentials of miroswitches A2 through A9 will vary. Differentials for A7 are typically twice that for A1 microswitch.
Please indicate specifically the differential value in enquiry/order, when it is critical in your application.
, values with neoprene diaphragm
LOW RANGE PRESSURE SWITCHES

4. HOWTOORDERINDUSTRIALLOWRANGEPRESSURESWITCHES
Nonstandard
allocation
ModelCableEntrySizeSwitchTypeRangeCode
(valuesinmbar)
Microswitch
Type
Diaphragm
Group1Group2Group3Group4Group5Group6Group8Group7
0=
Neoprene
1=
Teflon
2=
SS316L
L02=
(1.5-15)
L03=
(5-25)
L05=
(10-50)
L10=
(10-100)
L15=
(10-150)
L25=
(20-250)
L35=
(50-350)
Group1Group2Group3Group4Group5Group6Group8Group7
MT1PF1L03A10S1
MT=
Industrial
pressureswitch
withdiecast
Aluminium
enclosureto
IP66asper
IS/IEC60529
Reservedfor
non-standard
optionsnot
coveredin
catalogue.Will
begivenby
manufacturer,
onlyafter
agreementof
supplydetails
withcustomer.
1=
Al.head
½"NPTthreads
3=
Al.head
M20X1.5
threads
Pleasespecifyfullmodelnumbertoavoidambiguity.
eg.Alowrangeweatherproofswitch,with½"NPTcableentryinaluminiumhousingas1SPDTpressureswitch,fixeddifferentialwithoutscale,having5
mbarto25mbarpressurerange,with15Amp.microswitch,SS316pressurehousingwith¼”BSPportsize&neoprenediaphragmshallbespecifiedby
75
A1=General
purposemicroswitch
ratedat15A;250
VAC
General
purposemicroswitch
ratedat5A;250
VAC
*A2=Hermetically
sealedforcorrosive
environments
*A3=goldplated
contactsforlow
voltageapplications
*A4=DPDT
configuration
*A5=forhighDC
ratings
*A7=2SPDT
switchingelements
*A9=
M1=
M.S.powdercoated/
¼"BSP(F)
M2=
M.S.powdercoated/
¼”NPT(F)
S1=
SS316/
¼"BSP(F)
S2=
SS316/
¼”NPT(F)
PressurePort
Material/Size
PF1=pressure
switch,fixed
differentialwithout
scale
PF2=pressure
switch,fixed
differentialwithscale
inmbar
PF3=pressure
switch,fixed
differentialwithscale
in"wc
*PA1=pressure
switch,adjustable
differentialwithout
scale
*PA2=pressure
switch,adjustable
differentialwithscale
inmbar
*PA3=pressure
switch,adjustable
differentialwithscale
in"wc
*AvailablewithA9
(ingroup6)only
LOW RANGE PRESSURE SWITCHES
75
BULLETIN NO. : KA160822
MT
4