There is a pressure sensor, power supply 8-30vDC, output 4-20mA, range 60MPa.How much current does the 24V power supply use at 30MPa? What is the voltage? Is the pressure proportional to the current, or is it proportional to the voltage?How can the data acquisition card be connected to the sensor? Do you want to increase the resistance? Because the data acquisition card should read the pressure signal
Power supply 8-30V refers to the sensor working in this voltage range, the sensor can work when the load is greater than 8V, 8V less than 30V between the sensor can drive certain power output, 4-20 mA is a measure of the international popular acquisition mode, in the sensor error ignore timing current and the pressure is proportional to the current increases. The greater the pressure sensor for.4 Ma own consumption of electricity, so the effective current measured value should be between.60 MPa 4-20 mA you did not say clearly in the range of 0-60 MPa as the gauge shall prevail. The pressure current formula to teach you a fool type: (20-4) / * to calculate pressure sensor = to calculate the pressure corresponding to the Ma value; 16/60*30=12And data acquisition card connection, I do not know how you answer, and generally in the acquisition card on the negative line, a string of 250 ohm resistance on the OK; if the acquisition card above, you do not have to
24 volts will not change. The loop current with the change in pressure. The current and the pressure is linear and proportional to the specific formula for the measured pressure / sensor (= the current pressure corresponding to -4) / (20-4) =30/60* current 30MPa corresponding your question (20-4) +4=12mA
Power supply 8-30V refers to the sensor working in this voltage range, the sensor can work when the load is greater than 8V, 8V less than 30V between the sensor can drive certain power output, 4-20 mA is a measure of the international popular acquisition mode, in the sensor error ignore timing current and the pressure is proportional to the current increases. The greater the pressure sensor for.4 Ma own consumption of electricity, so the effective current measured value should be between.60 MPa 4-20 mA you did not say clearly in the range of 0-60 MPa as the gauge shall prevail. The pressure current formula to teach you a fool type: (20-4) / * to calculate pressure sensor = to calculate the pressure corresponding to the Ma value; 16/60*30=12And data acquisition card connection, I do not know how you answer, and generally in the acquisition card on the negative line, a string of 250 ohm resistance on the OK; if the acquisition card above, you do not have to
