Table top multimeters in the field of pressure sensors
About Sensors
Can feel (or respond to) the prescribed measurement and in accordance with certain laws into a usable signal output device or device. Sensors are usually directly responsive to the measurement of the sensitive element and generate usable signal output conversion element and the corresponding electronic circuit is composed of.
At present, the accuracy of the domestic pressure sensor is mostly below 0.25%, the output form of 4-20mA current-based.
There are many types of pressure sensors, such as resistive strain gauge pressure sensors, semiconductor strain gauge pressure sensors, piezoresistive pressure sensors, capacitive pressure sensors, piezoelectric pressure sensors, resonant pressure sensors and optical fibre pressure sensors.
Pressure sensors need to undergo strict quality testing before leaving the factory to ensure that it meets the user's various requirements, capable of industrial field of various environments. There are many ways to check, here I mainly introduce the application of ESCORT Fortune desktop multimeter for quality testing.
Domestic mainstream pressure sensors after the conversion of the output voltage requires a resolution of 1μV, this situation requires the calibration of the instrument is at least a five-bit instrument, and ESCORT-3146A is a 120,000 counts of high-precision five-and-a-half-bit instrument, its DC voltage (120mV precision 0.012% +5) is fully capable of the calibration of this part of the sensor; the same For the pressure sensor output current signal 4-20mA, ESCORT-3146A DC current file (12mA accuracy of up to 0.05%) and Auto Range function can be convenient for this part of the detection. ESCORT-3146A resistance measurement * best resolution of 1mΩ, for the correction of resistance strain gauge resistance is also more than enough. The ESCORT-3146A's unique dual-display function and high/low limit alarm bring great convenience to the production process.
