Initial instrument settings: 1. Adjust the contrast of the display. Press the "Menu" key to enter the main menu. Press the "Down" arrow key to select "System Setup" and press the "Enter" key. Press the "Down" arrow key to select "Dispay Setup" and press the "Enter" key. Select "Adjust Contrast" and press the "Enter" key. Use the "up" and "down" direction keys to increase and decrease the contrast, observe the changes in the display, and press the "Enter" key when it is adjusted to the appropriate brightness state. 2. Set the date and day. Press the "Menu" key to enter the main menu, then use the "Down" arrow key to select "System Setup" and press the "Enter" key. Use the "Down" arrow key to select "Display Setup" and press the "Enter" key. Use the "Down" arrow key to select "Date / Time" and press the "Enter" key. Use the "down" direction key to select "Time (time)", press the "Enter" key. Use the "right" and "left" direction keys to select the character to be edited (the character will flash at this time). Use the "up" and "down" direction keys to select the appropriate number. When all the numbers are correct, press the "Enter" key. 3. Set the sensor. From the "Sensor Setup" menu, select the desired sensor and press the "Enter" key. Select "Configure" and press the "Enter" key. Use the "down" direction key to select the "SET PARAMETER (set parameter)" menu, select "TS" or "TRB" parameters, and press the "Enter" key. Use the "up" and "down" direction keys to select the "MEAS UNITS (measurement unit)" menu, select mg / L or "NTU", and press the "Enter" key to select. Use the "up" and "down" direction keys to select the "CLEAN INTERVAL (cleaning interval)" menu, select the appropriate cleaning interval time. For more details, please click Disposable Protective Clothing,Medical Protective Clothing,Non Woven Protective Clothing,Sterile Protective Clothing ShenZhen Bri-Cloud Industrial Co.,Ltd , https://www.sobeautyhealth.com