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MF Oxy Comp 225x100
  • O2


The oxygen sensor MF-Oxy-comp has been specially developed for use in composting plants. The materials used meet the high requirements of this field of application. The measurement method is based on a dynamic process at two zirconium dioxide slices, which form a hermetically sealed chamber. The entire measuring range is linear.

During operation the sensor system monitors its own function and reports in case of hardware and sensor malfunction.

The calibration is done without reference gas in atmospheric air. The output of the measurement values takes place via an analog (4 - 20 mA) and a digital channel, the latter transmits the error messages.

Measuring ranges and product specifications

The oxygen sensor MF-Oxy-Comp is designed for the measuring range 0.1 to 25 vol% oxygen and equipped with an analog interface with 4 - 20 mA and has a digital output as well.

Functional Verification

The probe is designed so that it can check the operation during its proper functioning. For this +24 V DC is applied to the test pin. The test simulates a 20% lower oxygen concentration to the probe. This change must reflect equally in the analog channel.


The device complies with the generic standards DIN EN 50270: 2015-5 type1 and type2 and DIN EN 61326-1: 2013-07 and so with the EMC-directives 2014/30/EU.

Maintenance and Service

The device is delivered already calibrated. The interval of the maintenance meets the safety requirements. The device can be calibrated on fresh air and is supporting an electric and a manual calibration. For the electrical calibration the test pin is set to +24 V DC. The probe then calibrates itself autonomously on fresh air within a tolerance range of 10%. Outside the tolerance range the sensor can be calibrated manually. Manual calibration is performed by means of a potentiometer within the housing.

For more details, please refer to the technical data or ask our contact person.

Product NameProduct FeaturesProduct Code
MF-Oxy-Comp Temperature Range -40°C to +100°C
Measuring Range: 0.1 - 25 vol%
Output: 4 - 20 mA


Measuring Principle Oxygen Partial  
Power Supply Voltage 24 V DC ± 5%
Current approx. 500 mA
note switch on current (about 4 times rated current)
Ambient temperature -40°C to +50°C
-40°C to +100°C
for electronics
for rod probe
Air Pressure 900 hPa to 1100 hPa  
Permissible Humidity 15 to 95% relative humidity non condensing
Output 4 - 20 mA maximum ohmic resistance 500 Ω
Digital output Impulse, failor, external calibration
Housing Makrolon 8030 (30% GV), UL94 V-1 Colour = grey
Protection Class IP 65
Dimension (L x W x H) 105 x 60 x 42 mm
Rod Probe Length approx. 1,200 mm
Diameter ca. 30 mm
Material Stainless steel 1.4301
Total weight approx. 3,000 g
Connecting Cable 5 x 1.5² CU + Functional earth shielded cable

Pin assignment:


Product NameProduct FeaturesProduct Code
Connection Cable
10 m
Microbe safe connection cable with sealed connector, length 10 meters Z0A0-A0020
Connection Cable
25 m
Microbe safe connection cable with sealed connector, length 25 meters Z0A0-A0015
Connection Cable
75 m
Microbe safe connection cable with sealed connector, length 75 meters Z0A0-A0019
  Other lengths on request. Maximum possible length 300 m