ใช้ N-Hs10PA 10mm OD Hall มิเตอร์วัดกระแสน้ำ 10lpm

USN-HS10PA  Hall Effect Water Flow Sensor 0.5-10L/M  Electrical Flowmeter for Coffee Machine smart card equipment
Hall Effect Flow Sensor
Model: USN-HS10PA

Function: For the sense of the water flow rate on the following equipments: Thermostatic water heater, water purifier, water dispenser, smart card equipment, coffee machine etc.
Calculation Formula: F(Hz)= 24*flow rate(Q)-6(l/min)
1L=1400Pulse

Note:
1. When magnetic material is close with the sensor, its characteristics may vary.
2. In order to avoid particle debris, the sensor must be installed 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.

Features:
Nylon material, durable and economical.
Intubation design of inlet and outlet pipe, easy connection and operation;
Imported Hall IC from Japan, stable and reliable;
Range: 0.5-10L/min;
Working voltage: DC4.5-18V;
Rated voltage: DC5V;

Output voltage(rated: DC 5V); High level 4.5V and above; Low level 0.5V and below
Pulse output duty cycle: 50+-10%
Insulation resistance: 100M Ohm and above;
Tightness: Seal up all the holes, and inflate with 1.7MPa water, after 1 minute, no leakage and deformation;
-20-80 centigrade;
One year warranty