Endress+Hauser CCS50D, Operating Instructions Manual

Page: 44 / 52

Technical data CCS50D
44 Hauser
12.2.7 Long-term drift
< 1 % per month (mean value, determined while operating at varying concentrations and
under reference conditions)
12.2.8 Polarization time
Initial commissioning 60 min
Recommissioning 30 min
12.2.9 Operating time of the electrolyte
at maximum concentration and 55 °C 60 days
at 50 % of measuring range and 20 °C 1 year
at 10 % of measuring range and 20 °C 2 years
12.3 Environment
12.3.1 Ambient temperature range
-20 to 60 °C (-4 to 140 °F)
12.3.2 Storage temperature
Longterm storage Storage up to max 48 h
With electrolyte 0 to 35 °C (32 to 95 °F) (non-freezing) 35 to 50 °C (95 to 122 °F)
Without electrolyte –20 to 60 °C (–4 to 140 °F)
12.3.3 Degree of protection
IP68 (1.8 m (5.91 ft)) water column over 7 days at 20 °C (68 °F)
12.4 Process
12.4.1 Process temperature
0 to 55 °C (32 to 130 °F), non-freezing
12.4.2 Process pressure
The inlet pressure depends on the specific fitting and installation.
The measurement can take place with a free outlet.
The medium pressure directly upstream from the sensor membrane must not exceed
1 bar (14.5 psi) abs.
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In terms of sensor condition and performance, it is essential that the flow velocity limits
specified in the following table be observed.