A galvanic oxygen probe for continuous in-tank dissolved oxygen measurement and control.
Price range: $8.00 through $40.00 ex GST
Categories: DO Meters, Oxygen & Ozone, Water Quality Monitoring
Applications: Aquaponics, LSS, RAS, Water & Wastewater Treatment
Brand: Dryden Aqua
| Specification | Detail | Notes |
|---|---|---|
| Dissolved oxygen accuracy | ±0.2 mg/L | Measuring range and resolution are not published by the supplier |
| Sensor technology | Galvanic cell — zinc anode, silver cathode, semi-permeable Teflon membrane | A membrane sensor: membranes and electrolyte are consumables |
| Membrane options | Teflon for mg/L (supplied as standard) or polythene for % saturation | Teflon membranes sink, polythene % sat membranes float |
| Temperature compensation | Self-compensating from 5 to 40 °C | Applies to both 2-wire and 5-wire probes |
| Salinity and barometric compensation | Contact us | Handled by the receiving controller, if at all — confirm before use in seawater |
| Optional temperature sensor | PT100 built into the probe | 5-wire version; alternative sensors can also be used |
| Output | 6 to 12 mV per mg/L (temperature dependent); approximately 80 mV in air | High output reduces electrical noise over long runs |
| Calibration interval | Typically 3 to 6 months between checks | — |
| Response time | Approximately 15 to 30 seconds | — |
| Minimum water velocity | At least 4 cm/s across the membrane | A membrane sensor consumes oxygen and will read low in still water |
| Pressure rating | Up to 10 atmospheres | — |
| Cable | Heavy-duty sub-sea urethane into epoxy-sealed internals; 5 m standard, with 10 m and 20 m options | Extension with 0.5 mm² multi-strand two-core cable has been tested to 2000 m |
| Dimensions and weight | 63 mm diameter × 73 mm long; 1000 g including 5 m cable | — |
| Maintenance | Wipe the membrane with a cloth once a week | — |
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