Question { 10086 }

A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg.
This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor.
And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM.
The question is : If the motor speed is +5,500 (RPM), what will be the temperature?
(-sign indicates that the motion is in reverse direction).

Answer

Question { 9278 }

I work on a electronic positioner transmitter 4211 at the
field.I connect my multimeter in series to get the current
output then I calibrate it to 4ma in 0% of position of the
valve and 20ma in 100% position of the valve.My problem is
in the field I get the correct output current based on my
multimeter but in the dcs they only receive 40% in a output
20ma of this positioner.Then I try to simulate in this
analog card and they receive the equivalent percent on the
value that I simulated.Is ther any possibility to reset the
zero and span of this positioner 4211 fisher.And what other
possibility I can do to fixed this.This is my email add (
landicho_randy@yahoo.com )

Answer