Differential Pressure Sensors Available in Failsafe Versions
The new types of differential pressure sensors can be configured to provide special test patterns for error checking by an external microprocessor. This makes it possible for the sensors to achieve measurement of differential pressure and mass flow values to Class C safety level, provided that the test patterns are executed properly. Specifically, the SDP620, SDP621, SDP630, and SDP631 comply with Directives EN 12067-2:2004 “Gas/air ratio controls for gas burners and gas burning appliances - Part 2: Electronic types” and EN 13611:2007 “Safety and control devices for gas burners and gas burning appliances - General requirements.”
The new models are tailored to different hardware designs and measurement applications to allow customers a high level of flexibility when integrating. While the mass flow temperature compensated SDP621 and SDP631 are optimally suited for measuring mass flow, the SDP620 and SDP630 sensors output the true differential pressure value. Furthermore, the SDP620 and SDP621 sensors are intended for a direct threaded connection to a pressure manifold with O-ring sealing, while the SDP63x models are equipped with standard hose connectors.