Orbisphere K1100: There are only 2 dates you need to remember once a year  

Only two dates to remember

Your anniversary and calibration
of your dissolved oxygen sensors

About the K1100

k1100

The Hach Orbisphere K1100 Dissolved Oxygen Sensor is virtually maintenance free. Unlike other oxygen sensors, the K1100 only requires one calibration and two minutes of maintenance per year.

How the K1100 LDO works

The K1100 dissolved oxygen sensor is equipped with a measuring LED that emits a pulse of blue light and a photo diode as a light detector. The instrument is also equipped with a sensitive luminescent coated spot that is exposed to the sample.

LED Measurement graph
  • The measuring LED emits a pulse of blue light which irradiates the back of the oxygen sensitive spot. The coating material reacts with luminescence and emits a pulse of red light where the intensity and time delay are measured.
  • When oxygen is present in the sample stream and contacts the coating, the intensity and time delay of the luminescent light emission are changed.
  • The more oxygen molecules come into contact with the coating, the lower the intensity and the shorter the duration of the red radiation. These changes in the profile curve are used to determine the measurement.