Pressure Sensor, Silicon Transducer, 0-300mm Hg Rel New X4-:

US $120

Valley Stream, New York, United States
Jan 29th

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Pressure Transducer Pressure Sensor / Transducer, 0-300mm Hg, relative to ambient Case: 6mm Lot Size: 4 units See other listings and lot sizes for this item Pressure response: 0-300mm Hg (0-40kPa) Motorola Part MPX2301DT1 (now Freescale Semiconductor) New, in sealed tape reel Datasheet here You connect a flexible tube to the sensor's inlet port, and it measures the pressure in the tube. A hermetic gel protects the semiconductor wafer from contaminants in the medium to be measured. RELATIVE measurement: senses the pressure on the nozzle side of the device relative to the pressure on the back of the silicon chip. So if you were to seal off the nozzle with a non-flexible plug, device would sense the pressure behind the chip as an absolute measurement, (having as baseline the ambient pressure at the moment the nozzle was plugged.) Hookup is, (from left): VCC, Out+, Out-, GND. You can find application info on the web. All pressure sensors are essentially a Wheatstone Bridge on a silicon wafer, see below http://www.sensorland.com/HowPage004.html You apply a clean DC voltage at the top and bottom nodes of the bridge, and you measure the differential voltage at the remaining 2 middle nodes. Best done by feeding these to the +/- inputs of an opamp or instrumentation (differential) amp. A typical application (for a different sensor, pinout has different order, but same connections) http://www.devrs.com/pic/files/altim1c.gif If you look at all application schematics ( many are for rocket altimeters, by hobbyists) you see a common denominator: 2 pins to a DC voltage, 2 pins to an op-amp's differential inputs. NB. Avoid using any schematic that mentions the Motorola MPX4xxx or 5xxx series, as these are Absolute pressure sensors, and have different pin assignments, different implementation. NOTE: The silicon die and gold wire bonds are exposed on the back of the device. Application mounting must ensure mechanical protection from this side. Simply mounting the part flat on a PCB, as in the top photo will provide that protection.> I only ship to buyer's EBAY shipping address IMPORTANT: Buyer controls combining of order, by making a single payment for all items. Multiple payments void any shipping discounts. Can only combine BEFORE payment, never after. How to combine orders. If you have ANY time constraints, contact seller BEFORE buying or bidding, so we can BOTH come to an agreement. INTERNATIONAL shipments will NOT have online tracking , unless you use REGISTERED MAIL -- contact seller for invoice. INTERNATIONAL transit time can be 6-28 business days, and can be delayed by local Customs backlogs. If this is not acceptable, we cannot not enter into any trade. US shipments can take 5-7 business days - however the USPS does NOT guarantee these transit times, and can exceed them. eBay tracking info has 24-48 hrs update latency and can only guarantee a delivery scan -- interim scans may not occur. ALL items shipped to buyer's Registered eBay shipping address address, without exception. We can never take an address from email. Payment closes order. No changes are possible once paid. We have no expedited shipping service outside USA -- If urgent, please source locally. International : If you want seller to be responsible for package in transit , you must choose Registered mail - adds $13 to S&H - contact seller for invoice. supreme supremewidgets supremeauctiononlinesoftware.widgets.EbayGalleryZ.swf supremewidgets supremeauctiononlinesoftware.widgets.GalleryCat.swf supremewidgets supremeauctiononlinesoftware.widgets.FeedbackWidgetBasic.swf