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The HI-12973 pH/ORP probe has a built in temperature sensor for simultaneous temperature compensated pH and temperature readings, and contains a preamplifier to provide stable measurements in electrically noisy environments. The probe contain a pH sensor with cylindrically shaped bulb.
The probe also contains a single junction gel filled Ag/AgCl reference electrode with a cloth junction. Should the junction become dirty, simply pull out the cloth and trim off that portion. The ORP sensor is platinum and utilizes the same reference electrode as the pH electrode. Voltages displayed from this sensor are referenced to the Ag/AgCl reference with 3.5M KCl activity.
Specifications:
| HI12973 | pH/ORP electrode | |
| Reference | single, Ag/Ag/AgCl | |
| Junction | Cloth | |
| electrolyte | Gel | |
| Max Pressure | 3 bar | |
| Range | pH: 0 to 13; ORP | |
| Recommended Operating Temp | 0 to 70˚C | |
| Glass type | General purpose | |
| Tip/Shape | pH: conic (3mm); ORP; platinum sensor | |
| Temperature Sensor | Yes | |
| Amplifier | Yes | |
| Body Material | Titanium | |
| Cable | 7-pole; 1m | |
| Recommended use | Wastewater, municipal water, water treatment, swimming pools | |
| Connection | HI-12973 Quick Connection DIN | |
| Meter Recommendation for usage | HI-991003 |
