US208M User Manual-V20241121
The flow rate displayed is in litres per minute. The total flow displayed is in Litres. (By pressing SHIFT to shift the display)
How to set
Provide 5-24V DC power to light on, the default power supply is DC5V.
Open the back cover of the device
Press SET for 5 seconds to enter the menu or parameters
Then press SET to select the menu
Press + or - to increase or decrease the number, hold + or – to change the numbers quickly.
Double press + or - to change the number by 1000.
Hold SHIFT button for 5 seconds to reset the total volume
Parameters（Function 3-5 is invalid for US208M）
Parameters
1. 1.005.00-K value, this setting value is 100 times the real K value
For example: the formula of the flow sensor is F=8Q, then real K=8, setting K is 008.00;
Range: 1-65535
Default value:500
2. 2.00002: Decimal,
Range: 1-3
Default value: 2. the display number will show like 0002.35(L/Min)
3. 3.00000: Alarming time period. When =0, Function off.
Range: 1-65535
Default value: 0, always alarm after triggerred, when=3, alarm for 3 seconds and then off.
4. 4.005.00 – upper limit alarm value
=55L/Min means the alarm will go off when the flow rate is greater than the alarm value
Range: 1-65535
Default value:500
5. 5.001.00 – lower limit alarm value
=1.00 means the alarm will go off when the flow rate is lower than 1.0 litres/min
=0, function off
Range: 0.01-655.35
Default value:1.0
6. 6.00000: Total amount alarming value. When =0, Function off.
Range: 1-65535
Default value: 0, no display, no total volume alarm output.
How to calibrate
Use K (constant) to calibrate the flow rate
Frequency = K x Flow rate
If K set on 10, and the flow rate is 4 lts/min
To calibrate to 8 lts/min, change K to 5 (10x4/8)
Three Display Models:
a. Default Model: display current flow rate when there is water passing through, display 0000.00 when water stops.
b. Press Shift button once, display total volume.
c. Press SHIFT button again, display current flow rate when there is water passing through, display total volume when water stops.
No memory function for the display model, when power off/on, it wil return to default model.