What are the specific zero calibration steps for Ecolor electromagnetic flowmeters and HZ-KSLF Doppler radar flowmeters?

Zero calibration for Ecolor electromagnetic flowmeters and HZ-KSLF multi-band Doppler radar flowmeters is crucial for maintaining measurement accuracy. For LGF electromagnetic flowmeters, ensure the medium in the pipeline is completely static with no flow, then access the device parameter settings interface and select the 'Zero Calibration' function.

During calibration, the system automatically samples the current signal as the zero reference baseline, typically requiring 30-60 seconds to achieve stable readings. For HZ-KSLF Doppler radar flowmeters, zero calibration must be performed under no-flow conditions using a handheld communicator or PC software to enter calibration mode, allowing automatic elimination of static echo interference.

After calibration completion, verify zero drift remains ≤0.1% of full scale; if exceeded, recalibration is required. We recommend using EC32/EC60 RTU systems for remote monitoring to ensure long-term zero stability within technical specifications, establishing a solid foundation for subsequent full-scale calibration procedures.