Ultisensor Electronics

USN-HS21TS G1/2" Hall Effect Water Flow Sensor Food Grade POM


Model: USN-HS21TS

This model has four flow range with different formula

USN-HS21TS-1: 0.1-1.5L/min;  F(Hz)=55*Q(L/min);

USN-HS21TS-3: 0.3-4L/min;  F(Hz)=21*Q(L/min);


Water heater, washing machine, boiler, electromagnetic water heater, water dispenser, water purifier, R.O. machine, U.F. machine, coffee machine, water machine, water machine control, water control machine, beer machine, beauty equipment, shower equipment, electrolytic water machine, energy engineering, heat pump,IC meter, steam equipment, irrigation equipment, water system, campus card self-service sale (sell) water machine, washing machine, automatic washing equipment, water treatment equipment, water dispensing equipment, cooling system, circulation system, intelligent toilet (toilet), bidet, mechanical equipment, heating equipment,  Pharmaceutical (agents) equipment etc.coffee machine etc.

Calculation Formula: see above.


1.       Food grade POM (polyformaldehyde) material, environmental friendly material, small, flexible and functional.

2.       Intubation design of inlet and outlet pipe, easy connection and operation;

3.       Imported Hall IC from Japan, stable and reliable;

4.       Flow Range: see above

5.       Working voltage: DC4.5-18V; DC24V is available against request.

6.       Rated voltage and current: DC5V; no more than 10mA.

7.       Output voltage(rated: DC 5V); High level 4.5V and above; low level 0.5V and below

8.       Pulse output duty cycle: 50+-10%

9.       Insulation resistance: 100M Ohm and above;

10.    Tightness: Seal up all the holes, and inflate with 0.8MPa water, after 1 minute, no leakage and deformation;

11.    -20-60 centigrade;

12.    Working Pressure: under 0.8Mpa;

13.    Electrical Strength: AC500V 50Hz.

 14.    Wire length: regular 15cm/32cm, other length can be tailor made against request.

15.     End connection: SM2.54 Plug/ XH2.54 Plug.

16.    Low power consumption model can be tailor made(10μA)


1.  When  magnetic material is close with  the sensor,its characteristics may vary.
2.  In order to avoid particle debris, the sensor must beinstalled after a filter.
3. The flow sensor installation  has to avoid strong vibration and shaking of the  environment, so as not to affect the sensor's measurement accuracy.

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