Differential pressure sensors

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for flow measurement in bypass configuration

Measurement & Instrumentation

Differential pressure sensors
Differential pressure sensors

Sensirion's differential pressure sensors SDP601 and SDP611 are differential pressure sensors specifically calibrated for measuring mass flow in a bypass configuration. In a bypass configuration, an orifice or a linear flow restrictor is used to generate a differential pressure in a flow channel. The resulting pressure is measured over the orifice or the linear flow component. The difference be-tween the pressures before and after the orifice correlates to the volumetric flow in the channel, depending on the specific characteristics of the flow re-striction component. The mass flow can therefore be calculated from the measured pressure drop (differential pressure) over the orifice.

A bypass configuration is highly suitable for applications where individually adapted flow channels are necessary or where small differential pressures must be measured with very high precision. Especially for HVAC applications, which often involve measuring large flow volumes, it is the ideal solution.

The sensors offer a digital I2C output and are fully calibrated and temperature compensated. Operating on the principle of calorimetric flow measurement, the CMOSens differential pressure sensors achieve high sensitivity and accuracy even at very low pressure differences (below 1Pa). They also have high long-term stability and are free from zero-point drift. Like all devices in the SDP600 series, the SDP6x1 sensors are available in two versions. The SDP601 is intended for direct threaded connection to a pressure manifold with O-ring sealing, while the SDP611 is designed for tube connection.

Posted on January 30, 2013 - (394 views)
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Sensirion AG
Laubisrütistrasse 50
8712 Stäfa ZH - Switzerland
+41-44-306 40 00
+41-44-3064030
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