US211M digital flow meter user manual

Shandong iSentrol Electronic Technology Co., Ltd www.isentrol.com
E-mail : info@isentrol.com Tel/Wechat/Whatsapp: 15866797355
Add:4102, Hanlin Yuan, Zhonggong Town, Licheng, Jinan, Shandong, China
US211M Flow Meter
Quantitative Controller
User Manual

1 Technical Data
1.1 Description of operation button and connection
1. 2 Technical Specification
Rated voltage/current: DC24V±8V/1A
Rated voltage for solenoid valve: DC12V/0.3-0.5A
Default (quantitative) volume range: 0.01-9999L
K Value range: 1-9999

2. Function and settings
2.1: Current Flow Rate
2.1.1: Power on
2.1.2: When water goes through, the display will show the dynamic flow rate;
NOTE: You need to set the K value first, please refer to 3.3 to check how to set K
value.
Default Value
Flow rate (LPM)
2.2: Total Flow Volume
2.2.1: When stop manually, the total flow volume for this section is displayed.
2.2.2: Press MENU button, the second screen will show the total flow volume from
the very beginning or from last CLEAR operation.
2.3: Quantitative Control
With the help of a solenoid valve and a hall flow sensor, US211M can fulfill this
function.
2.3.1: Power on, press SET, the Default value blinks, UPPER or LOWER button to
choose the number.
2.3.2: Press SET again to finish one number and move to the next one.
2.3.3: Press MENU to save all and escape. The Default value is set.
When the total volume reaches the Default value, the controller will shut down the
solenoid valve.
It will start again after press RUN again
3. K Value Setting
US211M flow controller is compatible with any of our hall flow sensor. The key factor
is K value.
3.1: Adjust K value
4.1.1: Power on, press MENU button 3 times, press SET for 4 seconds then the
PASSWORD blinks, UPPER and LOWER button to input 1234 as the password, then
you can adjust K value.
3.2: How to get K value.

3.2.1: For each hall flow sensor, there is a formula to calculate flow rate based on
pulse. Usually, it is in a format of F=K*Q(L/M), K is a constant. F is the pulse signal per
second, Q is the current flow rate, and the unit is L/min.
3.2.2: The formula is available with your hall flow sensor order.
3.3: Calibrate K value
Use K (constant) to calibrate the flow rate
Frequency = K x Flow rate
If factory K value is 10 and the flow rate is 4 L/min
To calibrate to 8 L/min, change K to 5 (10x4/8)
Password
K Value
4. Packing List
US211M Controller*1
User manual*1
24V Power supply*1(optional)
Temperature sensor*1(optional)
12V solenoid valve*1 (optional)
12V diaphragm pump*1 (optional)
Hall flow sensor*1 (optional)

US211M digital flow meter user manual

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US211M digital flow meter user manual