Operating Manual
Operation instructions Page13-5
NOTE!
MBRAUN recommends that sensors are calibrated annually by MBRAUN technicians.
Quotation on request from MBRAUN Service Department.
13.3 Oxygen Analyser (MB-OX-SE-1)
13.3.1 General
The MB-OX-SE-1 sensor has been designed to control the atmosphere of MBRAUN
Systems for residual Oxygen content. The measuring range is 0 to 1000 ppm. The
measuring range from 0 – 100 ppm is linear. The measurement range is calibrated for use
below 1000 ppm as the sensor output, above 100 ppm, not truly linear.
The semiconductor sensor made of Zirconium dioxide is specific for oxygen, but
because of the high sensor temperature and the catalytic activity of the platinum coating
of the sensor there are low cross-sensitivities for hydrogen as well as possible reactions
with aggressive gaseous substances, that can reduce the operational life of the sensor.
Operating the sensor at oxygen levels of >1000 ppm (e.g. in air) does not damage
the sensor element irreversibly, but it should be avoided. If exposed to air, it will
take several hours until the sensor will measure low oxygen levels correctly in
Inert Gas.
Mechanical
Length over all: 190 mm, height 80 mm, depth 58 mm
Sensor-part: length 45 mm, diameter 26 mm
Flange: NW 40 KF
Weight: 0.7 kg
Electrical
Supply voltage: 24 VDC ± 10%
Environment
Ambient temperature: +15 to +27 °C
Pressure: 800 to 1200 mbar
Differential
ressure senso
to electronics max. ≈100 mbar)
Measuring
Range: 0 - 1000 ppm oxygen
Sensitivity: 10 mV / ppm
Response time (0 -
90 %): approximately 10 sec (0 - 90 %)
Warm-up time: 10 min (for < 10 ppm approx. 6 hr)
Accuracy
1)
: 2 % of displayed value ±1 ppm
up to 100 ppm
Drift at 10 ppm: 10 % / year
Sensor life
2)
: ca. 5 years
To Next Page
Loading...
