Jola Spezialschalter K. Mattil & Co. KG
Klostergartenstraße 11-20
D-67466 Lambrecht
Phone: +49 63 25 / 188-01
 
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Mercury-free immersion probe for Zone 0, 1 or 2

TS/EZT28/. x SI/SSR/1/K/SIL Variante 0
II 2/1 G Ex ia IIC T6 

  • . = number of mounted floating switches with stainless steel
     stirrup to limit the movement of the float
 
  • - tube with flange DN 500 PN 16 
   made of stainless steel 316 Ti

Similar unit, but without flange for use in Zone 1 and 2
  
For use in intrinsically safe circuits in potentially explosive atmospheres in categories 
- probe tube up to the DN 500 PN 16 flange (to separate zone 0 
  from zones 1 and 2): zone 0, 1 or 2;
- terminal box: zone 1 or 2

EC type examination certificate: INERIS 03ATEX0149

Application in liquids with a specific density >=0.7 g/cm³
Brochure Mercury-free floating switches and immersion probes [PDF]
Contact 
ball-operated microswitch,
potential-free changeover contact
Probe tube material stainless steel 316 Ti
Probe tube diameter 28 mm
Probe tube length max. 6,000 mm
Float material stainless steel 316 Ti
Seal material
Float protection class IP 68
Float form ball float
Float diameter 145 mm
Mounting orientation vertical
Mounting from the top
Type of mounted floating switches SI/SSR/1/K/SIL Variante 0
I M2 / II 1 G Ex ia I / IIC T6
with stainless steel stirrup
Number of mounted floating switches 2
Connecting cable 
red-brown silicone cable, 4G0,75
Mounting flange 
DN 500 PN 16 flange 
or larger made of stainless steel 316 Ti 
(to separate zone 0 from zones 1 and 2) 
necessary
Housing 
made of glass fibre and graphite reinforced 
polyester, protection class IP 65, 
according to the number of terminals:
A 301,   110 x 75 x 55 mm, for max. 6 terminals
A 120,   160 x 75 x 55 mm, for max. 12 terminals
A 113a, 160 x 160 x 90 mm, for max. 18 terminals
Temperature
application range 
0° C to + 60° C
Pressure resistance 
for pressureless applications
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] 
Probe tube length: according to customer's specifications, but max. 6,000 mm

This unit has to be connected to a certified intrinsically safe circuit.  
We can supply appropriate protection relays on request.

Recommended application via 
Jola protection relay KR 5/Ex  I (M1) / II (1) GD [EEx ia] I / IIC 


Options for safety applications:

- diodes (= variant 1) or resistors (= variant 2) on request
 
Functional description based on a switching example:

Automatic filling of a tank
The bottom floating switch falls together with the liquid to a minimum level and acts on the 
contactor coil winding when it falls below the horizontal. Liquid is then pumped into the tank. 
When the maximum level is reached, the top floating switch rises above the horizontal, the 
contactor holding circuit is interrupted, and the filling process is stopped.

The above equipment will be manufactured in accordance with customer's specifications.

Please always state desired floating switch type when ordering.

For technical data of mounted floating switches see corresponding pages.

This unit is not suitable for use in turbulent liquids (e.g. in stirrer tanks).

 
Basic circuit
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