This week’s EYE ON NPI (video) is a treasure, and can measure strain with pleasure…it’s the Amphenol All Sensors’ ELVH Sequence Digital and Analog Strain Sensors.
A household of temperature and strain sensors with a ton of various configurations so you possibly can undoubtedly match it into your design it doesn’t matter what interface or utilization vary.
These sensors combine a course of enchancment to the sensing aspect: the CoBeam2 sequence is a MEMS etched piezo-resistive ‘pressure gauge diaphragm’. This li’l chunk of silicon creates a Wheatstone bridge the place the strain towards the die makes microscopically small modifications to the resistances that may be measured on the differential output.
That’s not stunning: just about all absolute or differential strain sensors come as 4-element Wheatstone bridge configuration – and these require additional analog circuitry to deal with and amplify the small voltage change readings, or a excessive precision ADC – we’ve lined 24-bit ADCs for studying bridge sensors on earlier EYE ON NPIs.
With the ELVH household of sensors, you may get cleaned-up ratiometric analog output, or ready-to-integrate I2C or SPI – so you possibly can pair these even with fully-digital microcontrollers or microcomputers that don’t have any analog inputs. Plus, since its digitized already, you additionally get bonus standing bits and temperature reads.
This full household of strain and temperature sensors is available in a dizzying set of doable packages and configurations, from SMT J-Result in by gap DIP or SIP.
There’s additionally each absolute and differential input-ports, and barbed, needle or flat ports that may join with frequent tubing to measure strain inside a cavity or ambiently. In fact, temperature will all the time be an ‘on-chip’ ambient measurement.
For any kind of industrial or medical objective, you possibly can decide the strain vary from as little as 1inH2O (0.0025 bar) to +10 bar. Lastly, each I2C and SPI can be found for digital read-out, or analog if you wish to preserve compatibility with older sensors.
Should you’re designing a product that requires measuring air or gasoline strain, and also you wish to skip the entire analog-front-end growth half to get to market quick – try these Amphenol All Sensors’ ELVH Sequence – DigiKey shares virtually 200 completely different sorts of the ELVH sensor household which signifies that even when your necessities change throughout R&D, it is possible for you to to get excellent strain readings. Since they’re in inventory for quick cargo, you possibly can order tonight and get any taste you want by tomorrow morning.
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