The HI-76407/20 is a polarographic dissolved oxygen probe with internal temperature sensor and a 20m cable. Hanna Dissolved Oxygen probes are extremely rugged and perfect for laboratory and field applications. Calibration is fast and simple, and measurements are temperature compensated. The sensitive PTFE (PolyTetraFluoro-Ethylene) membrane can be changed in a few seconds. The HI-76407/20 is a standard polarographic dissolved oxygen probe for HANNA benchtop and portable dissolved oxygen meters. The probe is made of durable ABS plastic and contains an integrated temperature sensor for temperature compensated measurements. It is compatible with our HI-76407A/P PTFE membrane caps. Each membrane separates the probe's platinum cathode and silver anode from the water sample being measured. Oxygen diffuses across the membrane and interacts with the polarographic system to produce a current proportional to oxygen concentration. Each cap is easily filled with HI-7041 electrolyte and screwed onto the probe.
Polarographic sensor
Tapered
Shielded, waterproof cable
Cable protective sleeve
Linearised and accurate thermistor temperature sensor protected behind a stainless steel cover