Siemens ULTRAMAT 23 Series - Electrochemical Oxygen Sensor

In󹪞uencing variables
Temperature error ≤ 3% of smallest full-scale value/10 K in ambient temperature range of
5 °C ... 45 °C (34 ... 113°F)
Air pressure ≤ 1% of set full-scale value per 1% pressure change
Auxiliary power supply ≤ 0.1% of set full-scale value with a change of ±10%
Note
After longer periods of storage or transport, the device should be switched
on for 48 hours to meet the drift speci󹪝cation.
Drift
• AUTOCAL cycle activated
• AUTOCAL cycle deactivated
At an ambient temperature of 25 ±2 °C
Drift with 24 h Autocal <3% based on the smallest measuring range ac‐
cording to the nameplate
Drift <3% based on the smallest measuring range according to the name‐
plate per 24 h
Accompanying gases
• Humidity up to 20 °C dew point
• CO
2
≤ 16 vol%
• Exclusions
Negligible
Negligible
• Other sulfur compounds than SO
2
• Halogen compounds
• Chlorine
• Acetone
• Ozone
In case of doubt, please contact:
Support Request (https://support.industry.siemens.com/My/ww/en/
requests#createRequest)
3.4.4 Electrochemical oxygen sensor
To comply with the technical data, Autocal must be activated and the cycle time must be
≤ 24 hours. Autocal must be performed with ambient or synthetic air.
General
Measuring ranges 0 ... 5 vol% to 0 ... 25 vol% O
2
, parameterizable
Associated gases The oxygen sensor must not be used if the associated gas
contains the following components:
• Chlorine or 󹪞uorine compounds
• Heavy metals
• Aerosols
• Mercaptans
• Alkaline components (e.g. NH
3
in vol% range)
Service life Approx. 2 years with 21 Vol. % O
2
Description
3.4 Technical speci󹪝cations
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012 37