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Weighing Instruments High Reliability To Clarify The Instrument Maintenance Is Small
Nov 01, 2017

Weighing Instruments is also called weighing display control instrument, is the load cell signal (or by weight transmitter) into a digital display, and the weight of the data storage, statistics, printing of electronic equipment, commonly used in the work Automated ingredients in agricultural production, weighing, to improve production efficiency. Humidity sensor probe, stainless steel heating tube PT100 sensor, cast aluminum heater, heating ring fluid solenoid valve.

In the industrial enterprises in the application of Weighing Instruments performance indicators are usually used precision (also known as precision), deterioration, sensitivity to shape. Instrument calibration instruments are usually calibrated accuracy, variation and sensitivity of three.

1. Variation refers to the Weighing Instruments measured variables (can be understood as the input signal) from the differential bias to reach the same value, the instrument indicates the maximum difference between the value, probably said that the instrument in a stable external conditions, The measured parameters from small to large change (positive characteristics) and the measured parameters from large to small change (reverse characteristics) is not uniform degree, the difference between the two is the instrument deterioration. Reliability Weighing control instrument reliability is the chemical industry instrument workers to seek another tension performance indicators. Reliability and instrument maintenance is the opposite phase, the instrument reliability is high to clarify the instrument maintenance is small, otherwise the instrument reliability is poor, the instrument maintenance is large. To deal with chemical enterprise testing and process control instruments, most of the placement in the process of pipeline, all kinds of towers, kettle, cans.

2. Weighing Instruments in the stability of the load cell in the delineation of the conditions, weighing some of the performance of the instrument with a solid link with the ability to be called stability (degrees). Instrument stability is the chemical industry instrument workers are very considerate day performance indicators. As the chemical industry to use the instrument compared to the harsh environment, measured medium temperature, pressure changes are also relatively large, in this environment into the instrument to use, some parts of the instrument with a solid link with the time, The stability will fall. Favoritism or characterization of instrument stability Now that there is no quantitative value, chemical companies usually use meter zero drift to measure the stability of the instrument. Weighing the stability of the stability of the instrument directly related to the use of the scope of the instrument, and occasionally directly affect the chemical production, the stability of the impact caused by the stability of the precision of the two instruments on the impact of chemical production even greater. Stability is not good instrument maintenance is also large, is the most do not expect the appearance of things.

3. Weighing the sensitivity of the instrument occasionally also known as "magnification ratio", but also the static characteristics of the instrument on the slope of the appropriate points. Increasing the magnification can increase the instrument sensitivity, simply increase the sensitivity does not change the instrument's basic performance, that is, the accuracy of the Weighing Instruments did not improve, on the contrary there will be signs of oscillation, resulting in unstable output. Instrument sensitivity should be tied to the appropriate amount.

For most customers, although the instrument accuracy is a tight indicator, but in actual use, often more emphasis on the stability and reliability of the instrument, because the chemical enterprise testing and process control instrument for the measurement of the few, and a large number Is used for testing. In addition, the use of the process control system in the detection of its stability, reliability is more stress than the tension.

With the upgrading of the instrument, in particular the introduction of microelectronics skills Weighing Instruments manufacturing industry, so that the instrument can be greatly improved. Instrument manufacturers on this day performance indicators are also more and more cherished, usually with the average no time to MTBF to shape the reliability of the instrument. The MTBF of an all-intelligent weighing transmitter is about 10 times higher than the usual non-intelligent instrument such as an electric III transmitter. Weighing the instrument before use with the load cell supporting the digital calibration. Calibration is actually using the standard weight to calibrate the instrument. The calibrated instrument is internally stored with a calibration factor relative to this set of sensors. With this factor, the meter can convert the load cell analog signal into a digital display.