Filter Monitoring

HVAC systems utilize filters to ensure cooled or heated air is clean before being delivered to the desired space. Over time as filters are used they can become contaminated and increase the pressure losses in the HVAC system. SMI has a family of low pressure sensors designed to detect such pressure build ups and indicate the need to clean or replace a filter.

Application FunctionRecommended Products
Air FlowSM923X Gauge 250, 300 and 600 Pa, 16-Bit Digital
SM933X Differential 125 and 250 Pa, 16-Bit Digital
SM5X31 16-Bit Digital
SM6X31 16-Bit Digital
SM7X31 16-Bit Digital
SM5X91 16-Bit Digital and Amplified Analog
SM6X91 16-Bit Digital and Amplified Analog
SM7X91 16-Bit Digital and Amplified Analog