NK Instruments Pvt. Ltd. has 2 SPDT type Pressure Switches also. Those are used when 2 contacts are to be used at a time when switch operates. We have DJ & MJ series switches with Adjustable Stage Differential Switches and MK & DK series switches are available with 2 SPDT Fixed Stage Differential Switches. These switches are available in Weatherproof model IP 54 & IP 65. We also have 2 SPDT Flameproof Pressure Switches.

1. MT High Proof
High Range Pressure Switches
C A T A L O G U E
BULLETIN NO. : KA170408
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. INSTALLATION DRAWING
APPROX. DIMENSIONS IN
mm
inches
PRESSURE CAPSULE DETAILS
Note : wetted parts are mentioned in italics.
HIGH PROOF HIGH RANGE PRESSURE SWITCHES
75
BULLETIN NO. : KA170408
MT
2
Description
Pressure port (SS316)
Diaphragm (Teflon)
Plunger
Steel ring (SS316)
O-ring (Teflon)
Disc
No.
1.
2.
3.
4.
5.
6.
98.0
(3.85)
31
(1.22)
51
(2.0)
87
(3.42)
126
(4.88)
48.0
(1.88)
Cable Entry
1/2" NPT or
M20x1.5
130.0
(5.11)
149.0
(5.86)
18.0
(0.7)
51
(2.0)
31
(1.22)
Mounting Holes Ø7
2 Nos.
1
2
3
4
5
6

3. HIGH PROOF HIGH RANGE PRESSURE SWITCHES MT
75
BULLETIN NO. : KA170408
3
RANGE SELECTION TABLE
PP
PP5
P01
P02
P03
P04
P07
P10
P15
P30
0.067 - 0.213
(0.97 - 3.09)
0.1 - 0.5
(1.45 - 7.25)
0.1 - 1.0
(1.45 - 14.50)
0.1 - 1.5
(1.45 - 21.76)
0.2 - 2.6
(2.90 - 37.71)
0.2 - 3.6
(2.90 - 52.21)
0.5 - 7.0
(7.25 - 101.50)
0.5 - 10.0
(7.25 - 145.04)
1.0 - 15.0
(14.5 - 217.6)
5.0 - 25.0
(72.52 - 362.5)
Differential* bar (psi)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
70
(1015.27)
Range Code Range bar (psi) Maximum Working
Pressure bar (psi)
*Minimum differential increases with setpoint (Graphs available on request)
* Note :
Microswitches A2 through A9 can be supplied in some ranges and differentials will vary with microswitch used.
Please contact sales office for details. Please check availability of adjustable differential with sales office.
, values with neoprene diaphragm
Approximate
Maximum
for "A1"
microswitch
0.04
(0.58)
0.15
(2.176)
0.20
(2.90)
0.20
(2.90)
0.30
(4.35)
0.40
(5.80)
0.60
(8.70)
0.80
(11.60)
1.50
(23.21)
2.00
(29.00)

4. HIGH PROOF HIGH RANGE PRESSURE SWITCHES
75
BULLETIN NO. : KA170408
MT
4
MT=
Industrial
pressureswitch
withdiecast
Aluminium
enclosureto
IP66asper
IS2147
Reservedfor
non-standard
optionsnot
coveredin
catalogue.Will
begivenby
manufacturer,
onlyafter
agreementof
supplydetails
withcustomer.
1=
½“NPTthreads
3=
M20X1.5
threads
HOWTOORDERINDUSTRIALHIGHPROOFHIGHRANGEPRESSURESWITCHES
Nonstandard
allocation
ModelCableEntrySizeSwitchTypeRangeCode
(valuesinbar)
Microswitch
Type
Diaphragm
Group1Group2Group3Group4Group5Group6Group8Group7
PP=
(0.067-0.213)
PP5=
(0.1-0.5)
P01=
(0.1-1.0)
P02
(0.1-1.5)
P03=
(0.2-2.6)
P04=
(0.2-3.6)
P07=
(0.5-7.0)
P10=
(0.5-10.0)
P15=
(1.0-15.0)
P30=
(5.0-25.0)
Group1Group2Group3Group4Group5Group6Group8Group7
MT1PF2P01A10S1
Pleasespecifyfullmodelnumbertoavoidambiguity.
eg.Ahighproofhighrangeweatherproofswitchwith½"NPTcableentryinaluminiumhousingas1SPDTpressureswitch,fixeddifferentialwithoutscale,having0.1barto1barpressure
range,with15Amp.microswitch,SS316pressurehousingwith¼”BSPportsize&neoprenediaphragmshallbespecifiedby
0=
Neoprene
1=
Teflon
2=
SS316L
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=
PressurePort
Material/Size
S1=
SS316/¼"BSP(F)
S2=
SS316/¼”NPT(F)
*Pleaserefernoteunder
RangeSelectionTable
PF2=pressure
switch,fixed
differentialwithscale
inbar
PF3=pressure
switch,fixed
differentialwithscale
inpsi
*PA2=pressure
switch,adjustable
differentialwithscale
inbar
*PA3=pressure
switch,adjustable
differentialwithscale
inpsi
*AvailablewithA9
(ingroup6)only