-18V 6mm Hose Barb End Water flow Sensor 75-570ml or min 3 percent Err for Drinking Machine Hot Water Heater Coffee Machine and high quality Features: Food grade POM (polyformaldehyde) material, environmental friendly material, small, flexible and functional. Intubation design of inlet and outlet pipe, easy connection and operation. Small size, light weight, self-assembled in four directions, easy to install High flow accuracy, good reliability and long life Compliance with safety standards, Rohs, FDA requirements Application: 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. Specification: Calculation Formula: F(Hz)= 76xflow rate(Q)(l or min) Flow range: 75ml-570ml or min Measurement accuracy: 3.0 percent Temperature range: -10 to 65 C Pressure range: -10 to 0.3 Bar at 20C Power supply voltage: and3.8 to and20 VDC Signal connection: NPN transistor open collector Signal voltage: VDC GND Connection terminal: PANCON MAX-CON 156MLSS Output signal: square wave Duty cycle: -50 percent Rated voltage and current: DC5V, no more than 8mA Output voltage: (rated: for DC 5V) High level 4.5V and above low level 0.5V and below Pulse output duty cycle: 50and-10 percent Insulation resistance: 100M Ohm and above Tightness: Seal up all the holes, and inflate with 0.8MPa water, after 1 minute, no leakage and deformation. Working Pressure: under 0.8Mpa Electrical Strength: AC500V 50Hz Material: Food grade POM (polyformaldehyde) Dimensions: 56x50x35mm or 2.2x1.97x1.38inch Color: Black Quantity: 1 Pc Note: 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. Package includes: 1 x Coffee Machine Volumetric Flow Meter