Sensors and Systems for combustion technology

Lambda Transmitter LT10

LT10 the O2 measuring system

The LT10 is an O2 measuring system for continuous measurement of O2 concentration in non-combustible gases in the hyperstoichiometric range.

  • Applicable up to 950 °C/1,742 °F
  • TÜV-approved
  • Calibration with ambient air
  • Linear probe signal


Sheet steel/aluminium housing

Protection class:


Dimensions (HxWxD):

395x340x305 mm/15.55"x13.39"x12" in


approx. 27 kg/59.52 lb (incl. gas extraction device (GED) length 1 m/3.3 ft)
with GED heating system 500 mm/1000 mm/19.69" in/39.37" in, additional 4 kg/6 kg/8.82 lb/13.23 lb

Ambient temperature operation:

-20 °C ... +55 °C/-4 °F ... +131 °F
with transmitter protective box (option) up to -40 °C/-40 °F
A thermal jacket is recommended for ambient temperature
under 0 °C/32 °. It is absolutely necessary under -10 °C/14° F,

Ambient temperature transport and storage:

-40 °C ... +85 °C/-40 °F ... +185°F

Power supply:

230 VAC und 115 VAC, +10 %/-15 %, 48 ... 62 Hz
ATTENTION: To be used only in grounded power line networks!

Power consumption:

Typically 160 VA
Maximum 250 VA (without heater for GED and filter)

Range of measuring:

0 ... 25 Vol. % O2


0,1 Vol. % O2

Analogue, digital Inputs/Outputs:

see download area (technical data LT10)





EC type-examination certificate:

  • DIN EN 61326-1:2013-07
  • DIN EN 61010-1:2011-07


EC-declaration of conformity::

  • 2014/35/EU (low-voltage directive)
  • 2014/30/EU (EMC- directive)

The LT10 is an universal useable, microprocessor-based O2 analyser for direct measurement of O2 concentration of gases in hyperstoichiometric ranges ( λ >1), it can be used in:

  • Combustion exhaust gases
  • Industry exhaust gases
  • Oven atmospheres
  • Process gases


  • Linear probe signal (direct current [mA]) with fixed physical zero-point
  • No special test gases needed, automatic calibration with ambient air (21 Vol. % O2)
  • Preciseness of measurement better than 0,2 Vol. % O2 over the whole range of measuring 0 ... 21 Vol. % O2
  • No gas conditioning needed
  • No reference gas needed
  • Setting time <20 s on 90 %-value (T90) with gas extraction device (GED) , 450 mm/17.71" in long
  • No influence of measuring  temperature on preciseness of measuring
  • No temperature control of ZrO2-measuring cell needed
  • Automatic adaptation of cell temperature on cell internal resistance (Compensation of aging)
  • Measuring gas temperature up to 950 °C/1,742 °F
  • Means no ignition source inside flue gas channel – TUV approval existing
  • Intermittent operated measuring gas pump with definition of optimal pump running time
  • Easy to handle
  • Low-maintenance


with/without high dust protection

with/without GED heating system

Measuring gas pump or ejector