+ Orbisphere
M1100 Luminescent oxygen sensor ORBISPHERE

The new benchmark in oxygen monitoring

M1100 Luminescent oxygen sensor in-line 0-2000 ppb, 28mm ORBISPHERE fitting

Product ID: M1100-S00

Sensor for the determination of dissolved oxygen (DO) in beer and de-aerated water.


  • Minimal drift and annual calibration
  • Highly accurate ppb DO measurement
  • Robust optical technology without membrane or electrolyte


This sensor has an unbeatable precision of 0.8ppb and a limit of detection of 0.6ppb. Such accurate measurement readings are essential to control low oxygen levels in beer. 
The absence of membrane and electrolyte means that the sensor accuracy is unaffected by process changes or pressure shocks. Maintenance and operating costs are also reduced. The sensor has been designed to ensure mechanical robustness and resistance to CIP processes to extend operational lifetime and optimise its total cost of ownership.
The quick response time comes from two second measurement frequency. Capable of measuring accurately at this frequency over a 12 month period.

Accessories 32510.05: Sensor cable (5 m); 32003: Sensor insertion and retraction valve for mounting on Varinline® access unit with 28 mm sensor
Accuracy ± 0.8 ppb or 2 % whichever is greater
Calibration Single point zero calibration
Display 0.1 ppb
Measuring range 0 to 2000 ppb DO
Measuring range 0 to 2000 ppb DO
Repeatability ± or whichever is greater
Reproducibility ± 0.8 ppb or 2 % whichever is greater
Response time (90%)< 10 s (gas phase)