Dual Digital Model 20
The Dual Digital Model 20 is designed as an integrated unit to make oxygen measurements. The standard version includes two electronic magnetic stirrers and the electronics to supply the polarising voltage, signal amplification, and digital display of percentage saturation for two electrodes. The only additional requirement is a supply of constant temperature water to the incubation chamber to ensure accurate readings.
Located on the front panel are controls to:
- switch the display between the two electrode outputs;
- operate and adjust the stirring speed;
- set the polarising voltage between 0–1 V;
- zero the electronics and electrode output; and
- calibrate the electrode.
At the rear two sockets provide 0–1 V outputs suitable for a data logger, chart recorder, or other device.
A comparison chart for our range of controllers is also available.
|Meter Resolution||0.1% saturation|
|Polarising Voltage||0–1 V|
|Electrode Sockets||2 × DIN|
|Output Sockets||2 × BNC (0–1 V)|
|Stirring||120 to 1200 rpm|
|Power Supply||AC 110–120 V and AC 220–240 V versions available|
|Size||230 mm (width) × 300 mm (depth) × 200 mm (height)|
Rank Brothers Ltd reserves the right to change specifications in the light of continuing development.
For a working oxygen measurement system you will need a controller and an electrode. Rank Brothers offers a range of Perspex oxygen electrodes and glass oxygen electrodes suitable for use with this controller.
|OXY022A||Dual Digital Model 20 (220/240 V)|
|OXY024A||Dual Digital Model 20 (110/120 V)|
|OXY036N||PicoLog 1012 data logger (12 channels, 10-bit resolution, USB)|
|OXY036P||PicoLog 1216 data logger (16 channels, 12-bit resolution, USB)|
|OXY038B||Connecting lead (Dual Digital Model 20 to PicoLog)|
|OXY036Z||Pico ADC-20 data logger (8 channels, 20-bit resolution, USB)|
|OXY038A||Connecting lead (Dual Digital Model 20 to Pico ADC-20)|