Dissolved Oxygen Measurement Controller Comparison
| Digital Model 10 | Dual Digital Model 20 | Polarising Circuit | Combined Polarising Circuit and Readout Meter | |
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| Meter Type | Digital | Digital | Not included | Analogue |
| Meter Resolution | 0.1% saturation | 0.1% saturation | Not applicable | 2% saturation |
| Polarising Voltage | 0–1 V | 0–1 V | 0–1.5 V | 0–1.5 V |
| Electrode Sockets | 1 × DIN | 2 × DIN | 1 × DIN | 1 × DIN |
| Output Sockets | 1 × BNC (0–1 V) | 2 × BNC (0–1 V) | 1 × DIN (0–30 mV) | 1 × DIN (0–30 mV) |
| Stirring | 120 to 1200 rpm | 120 to 1200 rpm | Not included | Not included |
| Power Supply | AC 110–120 V and AC 220–240 V versions available | AC 110–120 V and AC 220–240 V versions available | 1 × C type battery (supplied) | 1 × C type and 2 × PP3 type batteries (supplied) |
| Size | 230 mm (width) × 300 mm (depth) × 200 mm (height) |
230 mm (width) × 300 mm (depth) × 200 mm (height) |
200 mm (width) × 120 mm (depth) × 70 mm (height) |
280 mm (width) × 170 mm (depth) × 70 mm (height) |
| Weight | 2.5 kg | 2.9 kg | 0.8 kg | 1.4 kg |
Rank Brothers Ltd reserves the right to change specifications in the light of continuing development.