Technical data Liquisys M CUM223/253
100 Endress+Hauser
11.4 Performance characteristics
Measured value
resolution
Maximum
measured error
1)
Repeatability
2)
± 1 % of measured value (min. 0.01 FNU)
11.5 Environment
Ambient temperature -10 to +55 °C (+14 to +131 °F)
Storage temperature –25 to +65 °C (-13 to +149 °F)
Electromagnetic
compatibility
Interference emission and interference immunity as per EN 61326-1:2006, EN 61326-2-
3:2006
Ingress protection
Electrical safety according EN/IEC 61010-1:2001, Installation Category II, for use up to 2000 m above sea
level
CSA Apparatus with CSA General Purpose Approval are certified for indoor use.
Relative humidity 10 to 95%, non-condensing
Pollution degree The product is suitable for pollution degree 2.
CUS31: 0.001 FNU/NTU, 0.01 ppm, 0.01 g/l, 0.01 %
CUS41: 0.01 FNU/NTU, 0.01 ppm, 0.01 g/l, 0.01 %
Temperature: 0.1 °C
1) acc. to IEC 746-1, for nominal operating conditions
Display
CUS31/CUS41: ± 2 % of measured value (min. 0.02 FNU)
Temperature: max. 1.0 % of measuring range
Signal output
CUS31/CUS41: 1 % of current output range (min. 0.02 FNU)
Temperature: max. 1.25 % of current output range
2) acc. to IEC 746-1, for nominal operating conditions
Panel mounted instrument: IP 54 (front), IP 30 (housing)
Field instrument: IP 65 / tightness acc. to NEMA 4X
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