Jola Spezialschalter K. Mattil & Co. KG
Klostergartenstraße 11-20
D-67466 Lambrecht
Phone: +49 63 25 / 188-01
 
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Float switch made of Hastelloy C

SMG/HC/3

 
  • Version with VDE marks licence

 
Picture 2
For applications up to max. AC 250 V

Only for use in liquids with a specific density >=1 g/cm³
Brochure Float switches SM [PDF]
Switching voltage AC min. 24 V
Switching voltage AC max. 250 V
Switching voltage DC min.  24 V
Switching voltage DC max.  250 V
Switching current AC min. 20 mA
Switching current AC max.  5,000 mA
Switching current AC max.
(inductive loads)		 1,000 mA
Switching current DC min.  20 mA
Switching current DC max.  100 mA
Switching capacity AC max.  1,000 VA
Operating principle 
microswitch: changeover contact
Float material Hastelloy C
Float form cylindrical float
Float diameter 63 mm
Float length 140 mm
Bellows material Hastelloy C
Screw-in nipple material Hastelloy C
Screw-in nipple dimension G1
Float protection class IP 68
Connection head 
PP with M 20 x 1.5 cable entry, 
protection class IP 54
Mounting orientation horizontal
Mounting from the side
Temperature resistance 
0° C to + 100° C 
(inside the connection head: 0° C to + 60° C)
on request, however 
without VDE marks licence: 0° C to + 250° C 
(inside the connection head: 0° C to + 100° C)
Pressure resistance 
for pressureless applications
(test pressure: max. 2 bar at + 20° C);
on request:
pressure resistance up to 4 bar at + 20° C / 
d >= 1.0 g/cm³
test pressure: max. 6 bar at + 20° C)
 
On request: extension piece, horizontal or vertical
(Attention!  "specific density >=..."  specification without the optional extension piece
for the float)

On request: 
- connection head made of cast aluminium, protection class IP 54
- other float dimensions
 
This unit is not suitable for use in turbulent liquids (e.g. in stirrer tanks).

Mounting instruction:

This float switch must be mounted horizontally.
- remove the pin,
- unscrew the float,
- screw the float switch with its seal into the G1 tank socket or flange borehole,
- seal in place,
- loose the two cheese head screws on the side – but do not remove –,
- set the connection head in such a way that the label “TOP” is at the top and the cable entry
  at the bottom,
- retighten the two cheese head screws,
- screw back in place the float,
- secure the float using the pin.

 
Measure drawing
Option
Basic circuit
Top