Low SMI pressure sensors with the option for dual and analog output concurrently and highly accurate measurements (up to ±1% FS accuracy).
The SM7000/SM6000/SM5000 offers pressure ranges from 0.07 to 2.49 PSI in a gage, differential or asymmetric differential configuration. This series provides JEDEC standard SOIC-16 package with dual vertical or horizontal porting option. With the dual porting, a reference measurement is possible to minimize errors due to changes in ambient pressure.
Combining the pressure sensor with a signal-conditioning ASIC in a single package simplifies the use of advanced silicon micro-machined pressure sensors. The pressure sensor can be mounted directly on a standard printed circuit board and a high level, calibrated pressure signal can be acquired from the digital interface. This eliminates the need for additional circuitry, such as a compensation network or microcontroller containing a custom correction algorithm.
What is the proof pressure (maximum pressure to which the device can be taken and still perform within specifications (without loss of accuracy) after returning to the operating pressure range) for the SM7000, SM6000 and SM5000 Series?
The proof pressure for the SM7000 (maximum operating pressure range 0.29 PSI) is 1.5 PSI. The SM6000 (max operating pressure range 0.79 PSI) has a proof pressure of 4.5 PSI and the SM5000 (max operating pressure range 2.49) offers a proof pressure of 12 PSI.
What is the burst pressure (pressure where part is permanently damaged) of the SM7000, SM6000 and SM5000 Series?
The burst pressure for the SM7000 (maximum operating pressure range 0.29 PSI) is 3 PSI. The SM6000 (max operating pressure range 0.79 PSI) has a burst pressure of 6 PSI and the SM5000 (max operating pressure range 2.49) offers a burst pressure of 15 PSI.
What is the difference between differential and gage pressure?
dP=P1-P2 is the pressure difference between two points, 1 and 2. P1 and P2 are respective pressure at the two points. This could be across an air flow restrictor in a HVAC system, or across a filter in the HVAC system, or in a ventilator system to detect and control inhalation / exhalation air flow.
Gage pressure is the pressure differential with respect to the atmospheric pressure. Generally -not always, gage pressure is higher than atmospheric pressure, so gage pressure sensors are calibrated to have its output be at minimum at atmospheric pressure, and increase from there. Gage pressure sensors are used to measure e.g. pressure in a pressure in a manifold.
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