Alternative for LMS 11

We have created a solution that replaces Proba LMS 11 and has the same functions. The trial is made of better materials and has the same or more advanced use value, the trial is mounted in the same way as the older version, and you will not have any problems when implementing it yourself.



The ceramic part of the lambda probe (solid electrolyte) has the shape of a tube closed on one side. The surface of the probe ceramic is provided on the inside and outside with a microporous platinum layer (the electrodes), which on the one hand has a decisive influence on the probe characteristics through a catalytic effect and on the other hand serves for contacting. On the part of the probe ceramic on the measuring gas side, there is a firmly adhering, highly porous ceramic layer above the platinum layer. This protective layer prevents the residues in the measuring gas from having an erosive effect on the catalytically active platinum layer. This gives the probe a high long-term stability.


The active probe ceramic (ZrO2) is heated from the inside by a ceramic heating element, so that the temperature of the probe ceramic is kept constant regardless of the measuring gas temperature. The ceramic heating element has a PTC characteristic, which leads to rapid heating and limits the power requirement. The connections of the heating element are completely decoupled from the probe signal voltage (R> = 30M-Ohm).



Applications :
  • Heating systems
  • Industrial processes
  • process technology
  • Gas analysis
  • Heat treatment
Sensing element: Zirconia tube
Installation thread: M 18
Measuring range: 21 … 1 … 10-26% O2
Response time: approx. 1 second
Measuring gas temperature: <200 ° C

Device description


  • Heating systems
  • Industrial processes
  • process technology
  • Gas analysis
  • Heat treatment


Measuring gas quantity: approx. 20 – 50 l / h
Connection (via 2.3 m cable)
  • Heating voltage: plug
  • Probe signal: socket
Exit: 0 … 1300 mV
  • Storage: -40 … + 100 ° C
  • Operation: 0 … + 100 ° C
  • 5 … 95% rel. Moisture, free of condensation
Optional accessories:

• Replacement for GA 3.03.1
• MK1
• MK2.1
• MK2.0

Our team of experts will answer all your questions.

Mesa Eletronic Gmbh


Johann-Flitsch-Strasse 2

83075 Bad Feilnbach

Phone and mail

 +49 (0) 8064 – 90630-0

+49 (0) 8064 – 90630-90


Mesa Eletronic Gmbh