from left to right, we call the four keys: No.1, No.2, No.3, and No.4 .
When we press the No.1, No.2 together, the shift will move to the left, when we press the No.1, No.3 together, the shift will move to the right, when we press the No.2, the figures will decrease, when we press No.3, the figures will increase.
Please check the actual flow velocity operation:
When you press the No.3 key, the LCD will display the accumulative flow “∑+XXXXX” and it will auto flip and display “∑-”,“normal flow ”,etc. Press the No.3 key until it shows the “FLS XXXX m/s”, it is the actual flow velocity, when the actual flow velocity is less than 0.5 m/s. the instant flow will show zero, at the moment , we need to modify the “ flow cutoff”.
The steps for modifying the “flow cut off “
1.When we press the NO.1 and NO.4 keys together, it will show “parameters set” menu.
2.Press the NO.4 key, it will show “0000” or “00000”, please change the password into “9454” or “09454”.
3.When we finish setting the password, press NO.1 and NO.4 keys together, it will show “language”.
4.Press NO.3 key, and turn the menu to “Flow cut off”, Press the NO.4 key enter and change the “005.00%” to “001.00%”,
5.When you finish modifying, press the NO.4 key for a long time, and it will return back to the normal display.
Modify the unit of the instant flow:
1.Press the No.1 and No.4 keys together, and it will show the “parameters set” menu.
2.Press the NO.4 key, it will show “0000” and “00000” change the password into “9454” or “09454”.
3.When you finish setting the password, press the No.1 and No.4 together, it will show “language”.
4.press the No.2 key until it shows the “flow unit”, press the No.4 key and check the current flow unit (we set m3/h before it leaves the factory),press No.2/No.3 and change into “L/m” , when finishing, press No.4 and return back to “flow unit”;
5.Press the No.2 keys until it shows the “flow range”, press the No.4 key enter and change the data into “500”, which you told me before, your largest flow is 500LPM.
6.When finish modifying, press N0.4 key for a long time and it return back, and display the normal flow.