How do I record a 4 to 20 mA instrumentation signal?
QI’d like to record a 4 to 20 mA measurement signal with my Memory HiLogger, but the instrument lacks a suitable measurement range. Is there a method I can use to record this signal?
AAttach a 250 Ω resistor to the Memory HiLogger’s terminal block along with the signal wires so that the 4 to 20 mA current is converted to, and input as, a 1 to 5 V voltage. The Memory HiLogger’s 1 to 5 V measurement range is convenient in this setup. You can also use the instrument’s scaling function to convert displayed values to desired values.