Technical data Turbimax CUS51D
44 Endress+Hauser
Maximum measured error Turbidity < 2% of measured value or 0.1 FNU (the greater value applies in each case).
Solids < 5% of the measured value or 1% of the upper range value (the greater
value applies in each case); applies to sensors that are calibrated for the
observed measuring range.
The measurement error encompasses all inaccuracies of the measuring chain (sensor
and transmitter). However, it does not include the inaccuracy of the reference
material used for calibration.
For solids, the achievable measurement errors depend very much on the media that
are actually present and may differ from the specified values. Extremely
inhomogeneous media cause the measured value to fluctuate and increase the
measurement error.
Repeatability < 0.2 % of reading
Factory calibration FNU and NTU in accordance with application table
Standard: 3 points
Drift Working on the basis of electronic controls, the sensor is largely free of drifts.
Detection limits
Application Measuring range Limit of detection
Formazine 0 to 50 FNU 0.006 FNU
0 to 4000 FNU 0.4 FNU
Kaolin 0 to 5000 mg/l 0.85 mg/l
13.4 Environment
Ambient temperature
range
–20 to 60 °C (–4 to 140 °F)
Storage temperature –20 to 70 °C (–4 to 158 °F)
Relative humidity Humidity 0 to 100 %
Operating height 3 000 m (9 842.5 ft) maximum
Fouling Degree of fouling 2 (micro environment)
Ambient conditions • For use in indoor and outdoor areas
• For use in wet environments
For continuous operation underwater → 16
Degree of protection • IP 68 (1.83 m (6 ft) water column over 24 hours)
• IP 66
• Type 6P
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