Varieties of Vacuum Switches are available on the basis of the Enclosure like IP 54, IP 54, IP 65 or, IP 66 Adjustable Range : 760 to 100 mm Hg Vacuum Diaphragm : Teflon or, Neoprene Pressure Housing MOC : Aluminium, Brass or, SS 316

1. MZ VACUUM SWITCHES
Transparent tough
polycarbonate cover
for visibility
Separate
terminal block
for wiring
Internal setscrew
to avoid
easy access
to setpoint
Large spring
for ease of
setpoint
IP66 enclosure
for excellent
ingress protection
Sealing facility
to avoid
tampering of
working switch
Cable gland as a
standard accessory
Non corroding exteriors
for a long life of the switch
Approximate Weight : 1.160 Kg.
Some Applications :
SS316 & teflon as wetted parts
to switch a wide variety of media
Electrical Connection :
Fig. 2
Used in filters, vacuum pumps, blower systems, etc. Z 2 3

2. VACUUM SWITCHES MZ
PRESSURE CAPSULE DETAILS
6
5
4
3
2
1
Note : wetted parts are mentioned in italics.
No. Description
1. Disc
2. Diaphragm
3. Plunger (SS316)
4. Junction Plate
5. Sealing 'O' Ring (Teflon®)
6. Sealing diaphragms (Teflon®)
INSTALLATION DRAWING
114
(4.48)
94
(3.7)
85
(3.34)
Cover Locking Screw
4 Nos.
Cable Entry
Ø5 Hole
(To be always open to atmosphere)
Vacuum Port
41 1/4" BSP Female
(1.61)
50
(1.97)
APPROX. DIMENSIONS IN
inches
.
.
.

3. MZ VACUUM SWITCHES
RANGE SELECTION TABLE
Range Code Range
mm Hg (" Hg)
Differential* mm Hg ("Hg) Maximum
Working Pressure
bar (psi)
Approximate
Maximum
for "A8"
microswitch
V00
† 760 - 100
(29.92 - 3.94)
50
(1.97)
12
(174.05)
*Minimum differential increases with setpoint (Graphs available on request)
† Typical values achieved at sea level, total vacuum that can be achieved varies mainly with altitude.
NK Instruments Pvt. Ltd.B-501/504, 5th floor, Raunak Arcade, Near THC Hospital, Gokhale Road, Naupada,
Thane(W) 400602. Maharashtra INDIA Telefax Nos.: 91-22-25301330 / 31 / 32
E-Mail: sales@nkinstruments.com Web: http://www.nkinstruments.com
Skype: nitinkelkarskype Gtalk: nkinstruments2006
Authorised Dealer

4. Continuous efforts for product development may necessitate changes in these details without notice
GoupGoupGoupGoupGoupGoupGoupGoup
.Acssvcstctfxfftvvctvcvc,tA.cstc,SSss
st¼BSPtsz&sscfy
Psscfyftvty.
ZVFVAS
st
ct
EtySzStcTy
vs
cstc
Ty
GoupGoupGoupGoupGoupGoupGoupGoup
=
=
Tf
V==
Gs
cstc
tt
A;VA
=
SPT
cstcs
=
Gs
cstc
tA,
VA
VF=
vcstc,
fxfft
tsc
VF=
vcstc,
fxfft
tsc"
V=
vcstc,
st
fftt
sc
V=
vcstc,
st
fftt
sc"
Avyt
tAG
Z=
Pcss
ssstc
tt
tst
yct
cst
IPs
IS
svf
st
tst
cv
ct.W
vy
fct,
yft
tf
syts
tcst.
=
X.
c
PssPt
t/Sz
=
A/
¼"BSPF
=
A/
¼PTF
S=
SS/
¼"BSPF
S=
SS/
¼PTF
NK Instruments Pvt. Ltd.B-501/504, 5th floor, Raunak Arcade, Near THC Hospital, Gokhale Road, Naupada,
Thane(W) 400602. Maharashtra INDIA Telefax Nos.: 91-22-25301330 / 31 / 32
E-Mail: sales@nkinstruments.com Web: http://www.nkinstruments.com
Skype: nitinkelkarskype Gtalk: nkinstruments2006
Authorised Dealer