Differential pH and ORP Sensor with No Junction Sealed Glass Reference for High Temperature Applications
Yokogawa's cation differential pH and ORP sensors are engineered for challenging applications where conventional sensors prove ineffective. These specialized sensors excel in diverse measurement environments ranging from brine solutions to electrolysis processes and cheese manufacturing.
The primary challenges in these applications typically involve reference cell issues, including:
- High diffusion potentials at the reference junction
- Elevated temperatures (common in chlorinated brine processes)
- High ground-loop currents
Yokogawa's cation differential sensors feature a sealed glass reference system with no liquid junction or electrolyte contact with the process. This innovative design eliminates diffusion potentials and fouling issues, ensuring measurement stability while requiring virtually no maintenance.
The FU20-FTS represents Yokogawa's latest advancement in pH sensor technology, combining the precision of 12 mm differential measurement with the rugged durability of the proven wide-body FU20 design.
- No junction design eliminates reference poisoning
- Completely sealed system prevents process-to-sensor connection
- Diaphragm-free construction avoids plugging or coating issues
- No electrolyte outflow prevents depletion problems
| Measurement Theory | Cation Reference |
|---|---|
| pH Range | 2-14 |
| ORP Range | -1500 to 1500 mV |
| Temperature Range | 0 to 105°C (14 to 221°F) |
| Pressure Range | 0 to 10 bar (0 to 145 PSIG) @ 25°C 0 to 5 bar (0 to 72 PSIG) @ 105°C |
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