Absolute and differential pressure transmitters
Pressure transmitter for the ISS space station
In September, an HTV supply ship brought the ACLS (Advanced Closed Loop System) module to the International Space Station ISS.
Its task is to produce new oxygen for the crew fromCO2 in the spacecraft's atmosphere using electrolysis. According to Airbus, the system is designed for a crew of three astronauts and saves 450 kg of water per year. At full capacity, the ACLS removes 3 kg ofCO2 per day, supplies 2.5 kg of O2and produces 1.2 kg of water.
Keller Druckmess-technik developed and manufactured absolute and differential pressure transmitters to control these processes. These operate in the range from 50 mbar to 20 bar at 0 to 110 °C. The project placed the highest demands because at an altitude of 400 km, no components can be replaced quickly if they fail.
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