How to properly wire the 4-20mA output signal of LGF electromagnetic flowmeter?
LGF electromagnetic flowmeter 4-20mA output requires correct positive/negative connection, attention to polarity and shielding, supports two-wire and four-wire methods
LGF electromagnetic flowmeter 4-20mA analog output signal wiring requires correct connection of positive/negative terminals and power supply. Standard wiring method: red wire (+) connects to 4-20mA positive terminal, blue wire (-) connects to 4-20mA negative terminal, typically powered by 24VDC supply.
Pay strict attention to polarity during wiring as incorrect connections may damage equipment. Use shielded cable with single-end grounding of shield to minimize interference. For long transmission distances, consider line impedance with load resistance typically not exceeding 750Ω. Ecolor's LGF series supports both two-wire and four-wire connection methods.
After wiring completion, measure output current with multimeter: zero flow should display 4mA, full scale should display 20mA. If abnormalities occur, verify wiring correctness or contact technical support.