The current in the loop represents the corresponding process variable value. This can be achieved easily by amplifying the 0-5V signal we had form out 0-20mA cct by a factor of 2 to generate a 0-10V output signal.
Example 2: How to calculate equivalent process variable from 4-20mA? The transmitter is responsible for converting the output of the transducer into a current between 4 mA and 20 mA. In addition to that wed like a 0-10V or +/-10V output. Take this number and multiply by the span of the pressure range (400 PSI − 150 PSI, or 250 PSI) and lastly add the LRV of the pressure range (150 PSI) to arrive at a final answer of 253.125 PSI. How to do 4 to 20mA conversions easily? Take 10.6 milliamps and subtract the LRV (4 milliamps), then divide by the span (16 milliamps) to arrive at 41.25% (0.4125 per unit). Typically, a 4 mA current value represents 0% of scale, a 20 mA current value represents 100% of scale, and any current value in between 4 and 20 mA represents a commensurate percentage in between 0% and 100%. What's the difference between 4 Ma and 20 mA? This is an analog signal standard, meaning that the electric current is used to proportionately represent measurements or control signals. Usually, this scale is linear, as such: Being a linear function, we may use the standard slope-intercept linear equation to relate signal percentage to current values: Where, y = Output from instrument. Signal Transducer, 24 VDC, 1 Input & 1 Output, Voltage & Current. A 4 to 20 mA current signal represents a 0 to 100 percent scale. Base / DIN, Input Signal: 0-10 VDC, 2-10 VDC, 0-20 mA, 4-20 mA. HX760: output 4-20mA and 0-10V signal (0-10V output, power supply must be not lower than 15V.FAQ about 4 To 20ma Conversion Formula Convert How to convert 4 to 20 mA signal? Standard 4 to 20 mA Conversion Formula.
*Note: please DO make sure the polarity connection is right, then power on! *It is designed for full bridge load cell/weight sensor, cannot be used with half bridge load cell. Potentiometer RV2(ADJ) adjust output GAIN value (amplification times). Gain a strong understanding of the fundamentals of 4-20 mA current loops, and be better equipped to decide when, where, or if a 4-20 mA current loop solution is right for your application. Watch this recorded webinar designed as an introductory class for those who have to deal with process signals. Potentiometer RV1(OFFER) adjust output medium value. Watch: The Fundamentals of 4-20 mA Current Loops. Pressure, displacement, strain gauge, torsion signal, accelerating signal measurement.Load cell signal transmission and data acquisition.Full bridge weight sensor signal conditioning and conversion.HX760 Load Cell Amplifier Module Applications It operates in 9-24Vdc wide range power supply. Its differential input voltage is ☒0mV, accuracy is 24bit. Its output can be 0-10V voltage and 4-20mA current. It can convert the weight changes measured into the changes of resistance signal, and then converts the resistance signal into dc current or voltage signal output. Further, by using 4-20mA as the driver, the voltage produced across a load resistor is easily scaled by simply changing the resistance. BRT HX760 Load cell amplifier circuit module is a low cost high precision weight sensor signal conditioner designed for full-bridge load cell.