OXYGEN SENSOR - AQOX- CL200.

The AQUAMATIC oxygen sensor AQOX-CL200 is a modified "Polarographic" type that offers the most advanced design of oxygen electrodes available for both profiling and monitoring.

The sensing element consists of a silver tube anode which encircles the centred glass body where the cathode (a platinum/iridium wire) is sealed in the middle. The sensor is filled with electrolyte and covered by a thin membrane.

The silver anode acts as a reference cell, providing a constant potential with respect to the cathode.

The cathode, where oxygen is consumed or reduced, is separated from the sample to be analyzed by a thin layer of electrolyte and a special thin composite membrane.

Features include a pressure stable and waterproof construction designed for easy maintenance at sea. Small dimensions, high accuracy and good long time stability.

The construction permits extended periods of oxygen measurements. The electronic has built-in sensor polarization through a rechargeable NiCa battery for fast performance at different applications (1 month storage without charging - automatic charging when operating).

SPECIFICATIONS
Oxygen range : 0 - 150 % sat. - (0 - 20 mg/l).
Accuracy : + 2.0 % sat. - ( + 0.2 mg/l).
Repeatability : + 1.0 % sat. - ( + 0.1 mg/l).
Response time - 25 m. : 10 sec. - 63 % (25 m membrane @ 20 ^oC).
Response time - 25 m. : 30 sec. - 95 % (25 m membrane @ 20 ^oC).
Resolution - 12 bit. : 0.04 % sat.
Flow sensitivity : 5% difference between stirring and no stirring.
Linearity : + 4% per ^oC temperature sensitive, (software compensation available)
Stability : Drift less than + 2.0% over 1 months.
Depth : 175 dbar or 250 psi. (max.1500 dbar profiling/300 dbar monitoring).
Maintenance : Cleaning in the field or laboratory.
Vibration - Shock : Limited by the glass/platinum cathode and the 25 m membrane.

AQUAMATIC, Ellebrinken 99, 8520 Lystrup, Denmark, Phone: +45 86 17-31-44, E-mail: aquamatic@aquamatic.dk