RC Systems Fixed Combustible & Toxic Gas Detection Transmitters & Controllers
As critical alarm monitoring experts, we specialize in interfacing various sensors and analyzer devices to our alarm and display products. Our products are known for their reliability, performance, and ease of use for applications where maintenance and safety are crucial. Some of these applications include fixed and temporary ambient gas detection as well as numerous other multi signal monitoring applications. R.C. Systems has engineered and manufactured industrial electronic products for the instrumentation industry since 1979. Our Gas Detectors, Controllers and WaveNet Wireless products continue to provide valuable solutions for customers worldwide.RC Systems, Inc. Products
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PRESSURE PULSES CAN CAUSE FALSE ALARMS TO O2 SENSORSSeptember 2023, MARIETTA, GA ~ Oxygen Sensors are sensitive to pressure:The output from partial pressure sensors is 100% proportional to the ambient pressure; therefore, changes in atmospheric pressure can produce false alarms. For example, if the pressure increased by 15 kPa (i.e. 15% increase at an ambient pressure of 1 atmosphere) then the oxygen sensor output will increase by 15%: from 20.9% to 24% oxygen, causing the gas detector to alarm. The output from mass flow-controlled sensors (including the most of our oxygen sensors) are not 100% proportional to the ambient pressure, showing a much reduced pressure effect: about 7% dependent; for example, a 15 kPa pressure change (i.e. 15% pressure increase) will cause the sensor output to increase by 7% of 15%: a 1.05% output increase from 20.9 to 21.1% oxygen, avoiding an alarm. However, mass flow oxygen sensors show transient behavior when subjected to a rapid change in ambient pressure. Rapid pressure changes can occur in several situations: • If a portable safety instrument is placed in the trunk of the car and the lid is clos...
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