::: UNITECH INSTRUMENTATION :::
MUMBAI - 400 086

LEVEL SWITCHES

 Unitech’s dual magnet float type
 side mounted level switches are
 used for controlling liquid levels in
 open or closed containers.
 These switches are suited for
 mounting on containers where it
 is impracticable to mount top
 mounted levels switch due to
 space or cost constrains.
 This switches are very rugged in
 construction and can be used for
 light fraction liquids as well.
 These switches house permanent
 magnet in float assembly which
 rise and fall with float. This
 magnet repels another magnet
 housed in the switch housing. This
 magnet activates the snap action
 micro switch.The advantage of
 this mechanism lies in the fact
 that contact pressure is
 independent of the force of
 magnet.

Specifications :

Contact : Micro switch NO/C/NC
Contact Material : Ag-CdO2
Contact Rating : 5A @ 240 V AC
Liquid Sp Gravity: Min 0.6
Hysteresys: ±15 mm
Rated Pressure: 6 Bar
Test Pressure : 10 Bar
Installation : Horizontal
Protection : IP-67 for electrical
housing.
Material
Float assly :
PP, SS 304 / SS316
Flange : SS 304, SS 316, PP
Elect. Housing Die Cast Al-LM6
Nozzle size Min NB 50

Float size

48 dia x 100 Min
Electrical conn.
 
3/4” ET
Options:
PTFE lined float assly for very corrosive application.Offset stem for different nozle centre and switch position. Larges float and higher hysterysis can be offered if required.

 Top mounted liquid level switches
 have a reed switch hermatically
 sealed in guide tube.

 As the float moves along the
 guide tube the ring magnet in the
 float activates the reed switch.
 The reed switches are available in
 normally open, normally closed or
 change over type.

 Application :
 Magnetic Level switches are
 installed for the control of of liquid
 levels in vertical







 

Specifications :

Contact : REED Switch
Contact Material : AG-Pd
Contact Rating : 0.5A@240 V AC
Liquid Sp
Gravity :
Min 0.7
Hysteresys : + 5 to 10 mm
Rated Pressure : 10 Bar
Test Pressure: 16 Bar
Installation Vertical
Protection IP-67 for
electrical
housing.
Material
Float assly
PP, SS 316
Flange SS 304, SS 316, PP
Elect. Housing : Die Cast Al-LM6
Nozzle size : Min NB 50

Float size :

32 dia x 32
or bigger
Electrical conn. 3/4” ET
Process Connection:
Flanged to ASA B 16.5
BS 10 : 1962
DIN 2633
Options:
PTFE lined guide pipe and float assly for very corrosive application.

 In certain applications such as
 high temperature liquids,
 turbulant liquids, tanks installed in
 areas with limited space it
 becomes necessary to installed
 bypass level switch.
 The device consists of level switch
 installed in metal housing. Two
 ermoto coupling provided
 facilitates device to function in
 accordance with hydraulic
 principles.










 

Specifications :

Contact : 1Changeover Switch
Contact Material: Ag-Pd
Contact Rating : 0.5A @ 240 V AC
Liquid density: Min 0.8
Hysteresys : ±5 mm
Rated Pressure : 10 Bar
Test Pressure : 16 Bar
Installation : Vertical
Protection : IP-67 for electrical
housing.
Material : SS 316,PP
Float assly :  
Flange : PP, SS 316
Elect. Housing : SS 304, SS 316, PP
Housing : Die Cast Al-LM6
fitting size : 3/8” BSP with
ermoto coupling
Float size : 52 dia x 50 Min
Electrical conn. 3/4” ET
Housing Volume : 175 cm3.
Options :
PTFE lined guide pipe and float
assly for very corrosive application.
Nylon, Polypropylene, Hard PVC, Spherical SS 316, Cylindrical SS 316 and
cylindrical PTFE Floats available
in variopus sizes. Pressure
rating is dependent on float size. Bigger the float highert the rating. Flame proof electrical housing available for Gas group I, IIA & IIB. Various Flanged process connections are available to suit customer tank
Nozzle. Minimum being 40 NB.