The temperature measurement deviation is large, and the reference compensation is not enabled. If the thermocouple type is selected incorrectly, enter the Temperature Setup and enable TC-B RJC. Confirm that the thermocouple type is consistent with the actual one (such as K type)
HART communication connection failure: 250 Ω resistor not enabled, device address non-zero. Press the COM key to enable 250 Ω. Confirm that the HART device address is 0 (default) and check the circuit wiring
USB cannot recognize that the driver is not installed and the USB cable has poor contact. Install YKCDC USB Driver, replace the USB cable and reconnect it
Data cannot be saved. Memory is full, file format is incorrect. Delete useless data or format memory. Confirm that the save format is CSV (CA550) or dedicated format (CA500)

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