KE-50

GS Oxygen Sensors GS oxygen sensors, model KE-series, are newly developed galvanic cell type sensors. By using acid electrolyte, the sensor has an exceptionally long life and excellent chemical durability. Features * Long life KE-25 - 5 years KE-50 - 10 years *Virtually no influence from CO2, CO, H2S, NOx, H2 * Low cost * Operates in normal ambient temperatures * Stable output signal * No external power supply required for sensor operation * No warmup time is required Applications Medical: Anesthetic instruments, respirators, oxygenenrichers Biotechnology: Oxygen incubators Food industry: Refrigeration, greenhouses Safety: Air conditioners, oxygen detectors, fire detectors Structure of KE-25 / KE-50 Black Lead wire (anode) Lead wire (cathode) Anode (lead) O-ring Plasticdisc Plastic ring Resistor Thermistor Acid electrolyte Sponge disc Cathode (gold film) Teflon membrane Red Principle GS oxygen sensors incorporate a lead oxygen cell with a lead anode and a gold cathode, using a specific acid electrolyte. Oxygen molecules diffuse through a non-porous fluorine resin membrane into the electrochemical cell and are reduced at the gold electrode. The current flowing between the electrodes is proportional to the oxygen concentration in the gas mixture to be measured. The signals are measured as terminal voltages of the resistor and the thermistor for temperature compensation. The change in output voltages represents the oxygen concentration. Specifications Model Measurement rang...