The role of benchtop multimeters in the field of pressure sensors
The sensor industry is recognized at home and abroad as a promising high-tech industry. It has attracted worldwide attention for its high technical content, good economic benefits, strong penetration capabilities, and broad market prospects. Many manufacturers are facing new opportunities and challenges. Beijing Delway Technology is willing to go through this process with all manufacturers and let Fugui Instruments play an important role in this field. Let's briefly talk about the application of Fugui desktop multimeter in the field of pressure sensors.
About the sensor
A device or device that can sense (or respond) to a specified measured value and convert it into a usable signal output according to certain rules. Sensors usually consist of conversion elements that directly respond to the sensitive element being measured and produce a usable signal output, as well as corresponding electronic circuits.
At present, the accuracy of domestic pressure sensors is mostly below 0.25%, and the output form is mainly 4-20mA current.
There are many types of pressure sensors, such as resistance strain gauge pressure sensors, semiconductor strain gauge pressure sensors, piezoresistive pressure sensors, capacitive pressure sensors, piezoelectric pressure sensors, resonant pressure sensors and optical fiber pressure sensors.
Pressure sensors need to undergo strict quality inspection before leaving the factory to ensure that they meet the various requirements of users and are competent in various environments at industrial sites. There are many methods of verification. Here I mainly introduce the use of ESCORT desktop multimeter for quality inspection.
Domestic mainstream pressure sensors require a resolution of 1μV for the output voltage after conversion. In this case, the calibration instrument required is at least a five-digit instrument, and the ESCORT-3146A is a 120,000-count high-precision five-and-a-half-digit instrument. Its DC voltage The current level of ESCORT-3146A (120mV with high accuracy of 0.012%+5) is fully qualified for the calibration of the sensor in this link; similarly for the current signal 4-20mA output by the pressure sensor, the ESCORT-3146A DC current level (12mA with high accuracy of 0.05%) and Auto Range function can easily detect this part. The best resolution of ESCORT-3146A resistance measurement reaches 1mΩ, which is more than enough for correcting the resistance value of resistance strain gauges. ESCORT-3146A's unique dual display function and high and low limit alarm function bring great convenience to the production process.
It can be seen that ESCORT-3146A fully meets the production requirements in the verification of key links of pressure sensors. At the same time, its ultra-high cost performance can not only meet technical applications, but also save costs for manufacturers. It is the best choice for sensor manufacturers. choose.
