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Knick Sensor

SE555 pH Sensor

Digital, sterilizable Memosens pH sensor with Ex protection, built for reliable measurement in aggressive and sulfide-rich media.

The SE555 is a digital pH sensor engineered for demanding CIP/SIP processes, combining a high-impedance pH glass with low alkali error and a silver ion trap that protects the ceramic junction from sulfide fouling. Memosens digital connection technology delivers galvanic isolation, moisture-proof data transfer, integrated sensor diagnostics and lab precalibration, reducing downtime and maintenance effort. With Ex certification and a wide operating temperature and pressure range, it suits routine pH monitoring in fermentation, food and beverage processing, and other applications involving extreme pH or aggressive media.

Specifications

Measurement Parameter:
pH
Connector:
Memosens
Measuring Range:
0 … 14 pH
Explosion protection:
Yes
Length:
120 mm
Process Connection:
PG 13.5
Temperature:
0 … 135 °C
Pressure, relative:
-1 … 6 bar
Temperature Detector:
NTC 30 kΩ
Junction:
Ceramic (1×)
Reference System:
Ag/AgCl with silver ion trap
pH Glass:
Omega glass, high impedance, low alkali error
Electrolyte:
Gel electrolyte with pressure pads

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