We have Diaphragm type Differential Pressure Switches. These gauges are more in demand for DP control applications in HVAC / across Heat Exchangers / across Pumps / across Filters / across Strainers, Level Control applications in pressurized tanks, Ranges : from 0 to 150 mm WC up to 0 to 7 bar Differential : Fixed Accuracy : +/- 1% FS Temperature Range : -10 to 80 Degree C (for high-temperature use of impulse tube is advisable) Migration : Impossible No. of Switches : One or, Two. Type of Switches : Micro Switches - SPDT, 5 A 250 V AC Enclosure class : IP 54, IP 65, IP 66 or, Flameproof Pressure Housing : MS or, SS Sensing Diaphragm : Neoprene or, Teflon Process Connection : ¼” BSP-F (Standard)

1. MT High Proof High Range
Pressure Difference Switches
C A T A L O G U E
BULLETIN NO. : KA170307
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. *Presure ports are brazed with flange
HIGH PROOF HIGH RANGE PRESSURE DIFFERENCE SWITCHES
75
BULLETIN NO. : KA170307
MT
2
98.0
(3.85)
Mounting Holes, Ø7
2 Nos
31
(1.22)
51
(2.0)
87
(3.42)
178
(7.0)
48.0
(1.88)
High Pr. Port
1/4" BSP(F)
130.0
(5.11)
149.0
(5.86)
Description
Oper. Plunger (S.S.)*
Diaphragm (S.S.)
'O' Ring (Teflon)
HP Plunger (S.S.)
'O' Ring (Neoprene)
'O' Ring (Teflon)
Surge Protection (S.S.)
High Pr. Port (S.S.)
Diaphragm Prot. (Silicon)
Low Pr. Port (S.S.)
Main Diaphragm (S.S.)
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
1
2
3
4
5
6
7
8
9
10
10
51
(2.0)
Low Pr. Port
1/4" BSP(F)
Cable Entry
1/2" NPT or M20x1.5
31
(1.22)
18.0
(0.7)

3. HIGH PROOF HIGH RANGE PRESSURE DIFFERENCE SWITCHES MT
75
BULLETIN NO. : KA170307
3
RANGE SELECTION TABLE
P01
P02
P03
P04
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 - 51.21)
Differential* bar (psi)
200
(2900.76)
200
(2900.76)
200
(2900.76)
200
(2900.76)
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.
0.24
(3.48)
0.40
(5.80)
0.40
(5.80)
0.60
(8.71)
Approximate
Maximum
for "A1"
microswitch

4. HIGH PROOF HIGH RANGE PRESSURE DIFFERENCE SWITCHES
75
BULLETIN NO. : KA170307
MT
4
HOWTOORDERINDUSTRIALHIGHPROOFHIGHRANGEPRESSUREDIFFERENCESWITCHES
Nonstandard
allocation
ModelCableEntrySizeSwitchTypeRangeCode
(valuesinbar)
Microswitch
Type
Diaphragm
Group1Group2Group3Group4Group5Group6Group8Group7
0=
Neoprene
1=
Teflon
P01=
(0.1-1.0)
P02=
(0.1-1.5)
P03=
(0.2-2.6)
P04=
(0.2-3.6)
Group1Group2Group3Group4Group5Group6Group8Group7
MT1DF1P01A10S1
MT=
Industrial
pressureswitch
withdiecast
Aluminium
enclosureto
IP66asper
IS2147
Reservedfor
non-standard
optionsnot
coveredin
catalogue.Will
begivenby
manufacturer,
onlyafter
agreementof
supplydetails
withcustomer.
1=
½“NPTthreads
2=
¾”NPTthreads
3=
M20X1.5
threads
Pleasespecifyfullmodelnumbertoavoidambiguity.
eg.Ahighproofhighrangepressuredifferenceweatherproofswitch,with½"NPTcableentryinaluminiumhousingas1SPDTpressureswitch,fixeddifferentialwithoutscale,having0.1bar
to1barpressurerange,with15Amp.microswitch,SS316pressurehousingwith¼”BSPportsize&neoprenediaphragmshallbespecifiedby
A1=General
purposemicroswitch
ratedat15A;250
VAC
General
purposemicroswitch
ratedat5A;250
VAC
*A3=goldplated
contactsforlow
voltageapplications
*A4=DPDT
configuration
*A5=forhighDC
ratings
*A7=2SPDT
switchingelements
*A9=
A8=General
purposemicroswitch
ratedat5A;250
VAC
PressurePort
Material/Size
S1=
SS316/¼"BSP(F)
S2=
SS316/¼”NPT(F)
Additionaloptions
available
*Pleaserefernoteunder
RangeSelectionTable
DF1=pressure
differenceswitch,
fixeddifferential
withoutscale
DF2=pressure
differenceswitch,
fixeddifferentialwith
scaleinbar
DF3=pressure
differenceswitch,
fixeddifferentialwith
scaleinpsi
*DA1=pressure
differenceswitch,
adjustabledifferential
withoutscale
*DA2=pressure
differenceswitch,
adjustabledifferential
withscaleinbar
*DA3=pressure
differenceswitch,
adjustabledifferential
withscaleinpsi
*AvailablewithA9
(ingroup6)only