KROHNE OPTISENS OAM 2080 EN - Manual (Page 39)

TECHNICAL DATA
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OPTISENS OAM 2080
www.krohne.com 08/2010 - MA OPTISENS OAM 2080 R01 en
7.2 Technical data
INFORMATION!
•
The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local representative.
• Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Download Center).
Measuring system
Measuring principle Reflection and absorption of light on suspended solids and sludge
particles. The light passes the measured particles between the
emitter and the detector of the optical sensor in a straight line.
Application range Continuous measurement of the suspended solids concentration in
waste water and sludge (e.g. in aeration basins).
Design
Features • Usage of NIR (Near Infra-red) light with 880 nm
• Reference measurement
• Temperature-compensated
Modular construction A typical measuring system consists of the MAC 080 multiparameter
converter and the OAM 2080 main unit.
Measuring range 0...20000 mg/l, depending on sludge type (Note: the factory
calibration was done for the range 0...14000 mg/l).
Sensor can be let down and is waterproofed up to 10 m / 32,8 ft
maximum immersion depth.
Drive Lowering speed: maximal 15 cm / 5,9" per second, 12,5 cm / 4,9" at
50 Hz
Full cycle time for 10 m / 32,8 ft: 3 min
Rake guard switch Closing contact normally open, 24 VDC is supplied from OAM 2080.
Display and user interface Refer to MAC 080 handbook.
Internal heating "Off" above 15°C / 59°F, full power below 5°C / 41°F.
Transmission of measuring
results
Via 4...20 mA outputs (or optional via Profibus DP) to the converter.
Measuring accuracy
Reference conditions Medium: water
Temperature: 20°C / 68°F
Pressure: ambient
Maximum measuring error
(sensor)
5% full scale
Maximum measuring error
(immersion depth)
0,5% full scale
.book Page 39 Friday, August 20, 2010 1:07 PM