What are the Advantages of the microLGD compared to Electro-chemical or Catalytic Detectors ?
Zero Poisoning, No Ageing: Electrochemical detectors are always in direct contact with the gas. They are prone to ageing as the measurement principle is based on a chemical reaction depleting the sensor substance. This leads to short life times, typically of about one year. This life time decreases when the gas to be measured is present frequently. The response is rarely specific to a single gas, which may lead to costly false alarms. Issues with 0-drift for multiple reasons are frequent. Therefore, calibration are necessary in short intervals, which in turn increases the cost-of-ownership for initially low-cost instruments. The sensors are also sensitive to pressure and humidity changes. Pellistors are also subject to poisoning, especially by silicon and halogen compounds. Span loss from ageing cannot be monitored and can only be detected during calibration. As the microLGD is an optical detector without direct contact to the gas, it is not at all subject to poisoning or degradation.
