Jola Spezialschalter K. Mattil & Co. KG
Klostergartenstraße 11-20
D-67466 Lambrecht
Phone: +49 63 25 / 188-01
 
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Pneumatic float switch

SM/H/E/PN/Ex-0G
II 2/1 G c IIC ΔT=0 

  • with pneumatic 3/2-way valve

  
For use in pneumatic control circuits in potentially explosive atmospheres in categories 
- float side: zone 0, 1 or 2,
- terminal box: zone 1 or 2;

EC type examination certificate: INERIS 03ATEX0224


Pressure range:  1.5 bar to max. 6 bar

Operation:

"UP" operation:
float in "max." position: air is able to flow;
float in "min." position: air passage is blocked

on request:

"DOWN" operation:
float in "max." position: air passage is blocked;
float in "min." position: air is able to flow


Application: for various liquids, depending on the length of the float rod and the type of float 
used - please contact us for information on different options
Brochure Float switches SM [Ex] [PDF]
Operating principle 
pneumatic 3/2-way valve
Float material stainless steel 316 Ti
Float form ball float
Float diameter 95 mm
Bellows material stainless steel 316 Ti
Screw-in nipple material stainless steel 316 Ti
Screw-in nipple dimension G1
Flange 
On request: blind flange DN 100 with G1 thread 
made of steel St 37 or stainless steel 316 Ti
Float protection class IP 68
Connection head 
made of glass fibre and graphite reinforced
polyester, A 301, 110 x 75 x 55 mm, 
with 2 hose connectors for DN 6
Mounting orientation horizontal
Mounting from the side
Temperature resistance 
0° C to + 40° C
Pressure resistance 
for pressureless applications only,
only for application at atmospheric conditions 
(0.8 bar to 1.1 bar)
Documents for application
in explosive atmospheres 		EC type examination certificate [PDF]
EC Declaration of Conformity [PDF]
Installation, operating and maintenance instructions [to the language selection]		 
On request: extension piece for float, horizontal or vertical, as desired
 
Mode of operation for pneumatic systems:

The rising or falling liquid level causes the float to move marginally up or down. 
When the float rises, it activates a pneumatic 3/2-way valve.

These units are not suitable for use in turbulent liquids (e.g. in stirrer tanks).

 
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