SE554 pH/ORP Sensor

The SE554 combines pH and ORP measurement in a single 225 mm sensor built for demanding chemical process environments, including brines, strong oxidizers, and acidic or alkaline media. Its dual open-hole junction design and solid Ag/AgCl/Cl electrolyte resist blockage from solids and minimize diffusion-potential errors, while an integrated NTC temperature detector supports accurate compensation. Memosens digital connection technology ensures galvanic isolation, immunity to humidity, and lab pre-calibration for reduced on-site maintenance and downtime. With ATEX/IECEx explosion protection and a process temperature rating up to 130 °C, it suits hazardous-area installations across the chemical industry.

Specifications

Measurement Parameter:

pH ORP

Connector:

Memosens

Measuring Range:

0 … 14 pH ± 1500 mV

Explosion protection:

Yes

Length:

225 mm

Process Connection:

PG 13.5

Temperature Detector:

NTC 30 kΩ

Junction:

Hole (2×)

Reference System:

Ag/AgCl/Cl solid electrolyte

Sensor Material:

Alpha glass Platinum

Relative process pressure:

0 … 10 bar (0 … 145 psi)

Wetted materials:

Body → Glass Electrode (ORP) → Platinum Junction → 2× hole Sensor tip → Alpha glass

Process Temperature:

0 … 130 °C (32 … 266 °F)

Tightening torque:

1 ... 3 Nm