Flow Switches
Features
n Flow control designed for upto 5000 LPM with process n Switch certified for group IIA/IIB, IIC
connection upto 2” n Switch enclosure at die cast alluminium and SS available
n Applications upto 40 bar and upto 250 deg cent available n Versions with ATEX and FM certified available
n Flow switch with options of special bellows to cater to high n Durability defined on sealing and pressure and temperature
flows, high pressure and high temperature application
n Bellows with better hysteresis for the overall flow switch n Improved reliability with dual opposed magnet design which
accuracy provides snap action
n IBR versions available n Applicable with various versions of MOC's depending on
n Applicable for H2S, NACE, certified pressure and temperature, versions with Stainless and steel,
n Switch is CCOE approved and certified for IP67 hastelloy, monel, PTFE, PP, Titanium available
Concept and Principle of Operation
Instruments Consortium has designed flow switches for
the direct control of fluid flow in pipelines and ducts. These switches
are magnetically or mechanically actuated. This is simple, reliable
and economical solution to control or monitor flow in process lines.
GIC offers two types of Flow Switches:
n Inline type
n Top mounted version
This is direct mounted type flow switch in pipe line. This consists of
Switch assembly, Body, Bellowsand Flapper. This is mounted in
horizontal position. Flapper is connected to bellow assembly.
When flow reaches beyond set flow the flapper moves in the direction
of flow. The displacement of flapper causes actuation of the
microswitch through bellow assembly. Inline type flow switch is
available upto 50 NB line size and above 50 NB Top mounted is
recommended. There are no vertical moving parts and is therefore
maintenance free. These flow switches can be mounted in horizontal
as well as vertical lines.
Technical Specifications: Table-1 Material of Construction
Displacer SS316, SS304, SS316L, SS304L, Monel, Titanium, Hastelloy, others on request
Flapper PTFE lined SS, PP lined SS, PVDF lined SS, SS316, SS304, SS316L, SS304L,
Monel, Titanium, Hastelloy
Flange SS316, SS304, SS316L, SS304L, Monel, Titanium, cast carbon steel, Hastelloy
Switch enclosure Die cast alluminium, SS304, SS316, SS316L
Cable gland Brass, PBS plastic, SS316, SS304, 316L
Bellows SS316, SS316L, Monel, SS304, Phosphor Bronze
10/17 REV.: 00
www.generalinstruments.co.in 355 www.general-gauges.com
Flow Switches
Technical Specifications: Table-2 Technical Data
Flapper length 12mm till 200mm depending on flow for control
Flapper thickness 0.15mm till 2.3 mm depending on pressure and temperature
Bellow Double walled with 20, 30 and 40 convolutions and thickness of bellow more than the convolutions
travel/length of the bellow
Process connection ½” till 2”, ANSI RF, FF, 125-250AARH, DIN std DN15, 20, 25, 40, 50, socket weld, butt weld,
weld neck flange in ANSI and screwed connection NPT and BSP
Float Pressure design till 40 kg
Flange rating max rating ANSI 600# and DN PN 100
Cable gland Double compression, metal cable normal glands, ½” NPT F, ¾” ET, M20, PG 13.5, PG 16
Switch SPDT, 230 VAC, 5 A or 24VDC, 0.5 A
No of cable entries Max two
Switch enclosure IP65, IP66, IP67
Switch enclosure EExia IICT6, EExd IIA/IIB, EExd IIC
Switch accuracy Max upto 1%
Switch hysterisis Max upto 0.5% to 1%
Switch repeatability Max upto 1%
Switch certifications CCOE, FM, ATEX, CE (versions applicability on request)
Flange Forged, cast versions, radiography level - 1 / 2 versions available
Flow switch weight 1.6 kg till 8 kg depending on configure of flow requirement
Temperature application Upto 250 deg cent
Pressure application Upto 40 kg/cm2 g
Flow in LPM in control 2 LPM till 20 LPM for ½” process connection and pipe size
8 LPM to 40 LPM for ¾” pipe size
15 LPM to 190 LPM for 1” pipe size
30 LPM to 215 LPM for 11/2” pipe size
40 LPM to 360 LPM for 2” pipe size
60 LPM to 700LPM for 3” pipe size
90 LPM to 1500 LPM for 4” pipe size
125 LPM to 3000LPM for 6” pipe size
200 LPM to 4000 LPM for 8” pipe size
250 LPM to 5000LPM for 10” pipe size
Differential pressure 75mmwc till 150 mmwc
G A Drawing for assembly and mounting
04 06 05
5
4
03
2
3
07
6
08
1
7
8
01 02
09
10
9
11
10
11
1 Earthing Screw 1 Micro Switch
2 Micro Switch 2 Cover Gasket
3 Cover Gasket 3 Cable Entry
4 Cable Entry 4 Cover Bolts
5 Cover Bolts 5 Enclosure Cover
6 Enclosure Cover 6 Terminals
7 Terminals 7 Enclosure
8 Enclosure 8 Enclosure
9 Body 9 Body Gasket
10 Body Gasket 10 Flapper
11 Flapper 11 Process Conn.
10/17 REV.: 00
Inline Top Mounted
www.generalinstruments.co.in 356 www.general-gauges.com
Ordering Information
FS IN-F01-ZA-ZC-SI-PU-MQ-Z
Type Cable Entry
IN Inline MQ One
MT Top Mounted MR Two
Process Connection Z NIL
Flanged Connection Enclosure
F01 1/2", 150# RF PU Die Cast Aluminium
F02 3/4", 150# RF Weatherproof to IP – 67
F03 1", 150# RF PV Die Cast Aluminium
F04 1.5", 150# RF Flameproof suitable
to Gr. IIA / IIB
F05 2", 150# RF
F09 1/2", 300# RF PW Die Cast Aluminium
F10 3/4", 300# RF Flameproof suitable
F11 1", 300# RF to Gr. IIC
F12 1.5", 300# RF
Microswitch
F13 2", 300# RF
SI 1 SPDT
Threaded Connection
SJ 2 SPDT
B04 1/2"BSP (M)
B05 3/4"BSP (M) MOC of Flapper
B06 1"BSP (M) ZC SS 304
B07 1.5"BSP (M) ZD SS 304L
B08 2"BSP (M) ZE SS 316
N04 1/2"NPT (M) ZF SS 316L
N05 3/4"NPT (M)
N06 1"NPT (M)
N07 1.5"NPT (M)
N08 2"NPT (M)
MOC of Body
ZA CS(A105)
ZB CS(A106)
ZC SS 304
ZD SS 304L
ZE SS 316
ZF SS 316L
10/17 REV.: 00
www.generalinstruments.co.in 357 www.general-gauges.com
