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

SMV/HC/S3

 
  • design with heat resistance

  
For applications up to max. AC 250 V

For various liquids, depending on the length of the float rod and the type of float used - please 
contact us for informations on different options.
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
All parts in contact with the liquid Hastelloy C
Float material Hastelloy C
Float form ball float
Float diameter 130 mm
Screw-in nipple material Hastelloy C
Screw-in nipple dimension G1
Flange 
On request: blind flange with any desired 
dimensions tapped with G1 thread
Float protection class IP 68
Connection head 
aluminium connection head, 
protection class IP 54
Mounting orientation vertical
Mounting from the top
Temperature resistance 
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)
 
Length of the float rod less float (measured from sealing surface of screw-in nipple):
as required; 200 mm if not otherwise specified.
Guide tube for the float rod for rod length over 500 mm included (for rod lengths under 500 mm
on request)

To protect the user and the contacts of our apparatus we recommend the use of our
KR .. protection relays (see product group "Protection relays and alarm relays", 
click on heading "Others").

For full alarm, empty alarm or run dry protection:     1 relay per float switch
For on/off control (with self-hold):                        1 relay for 2 float switches

Options:

On request: 
- ball float 148 mm Ø, 180 mm Ø or 200 mm Ø  and special floats with other dimensions

- function test button to test the mechanical and electrical function of the float switch
 
This unit is not suitable for use in turbulent liquids (e.g. in stirrer tanks).

Mounting instruction:

This float switch must be mounted vertically.
- remove the pin,
- unscrew the float,
- screw the float switch with its seal into the G1 tank socket or flange borehole,
- seal in place,
- screw back in place the float,
- secure the float using the pin.

 
Measure drawing
Option
Basic circuit
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