1/2 Inch Water Flow Sensor SEN-HZ21WA
1/2 Inch Water Flow Sensor SEN-HZ21WA
The 1/2 Inch Water Flow Sensor SEN-HZ21WA is a digital flow sensor designed to measure the flow rate of water or other non-corrosive liquids in a pipeline. This sensor is specifically engineered to provide accurate and reliable flow measurement data in a wide range of applications, including industrial automation, water treatment, and HVAC systems.
The SEN-HZ21WA water flow sensor operates on the principle of electromagnetic flow measurement. When a conductive liquid flows through the sensor, it induces an electromotive force (EMF) that is proportional to the flow rate. The sensor converts this EMF into a digital signal, which is then processed to provide an accurate measurement of the flow rate.
The sensor has a built-in microcontroller that calculates the flow rate based on the detected EMF and provides the data through a digital output. The microcontroller also performs temperature compensation to ensure accurate measurements over a wide range of temperatures.
0.5 to 10 L/min
2.5% of full scale
Pulse width modulation (PWM)
0.1 to 10 seconds
0C to 80C (32F to 176F)
5V to 24V DC
<50 mA
3-wire (VCC, GND, Signal)
1/2 inch (DN15)
Brass body, PVC insulation
IP67, CE
20% to 80%
| The 1/2 Inch Water Flow Sensor SEN-HZ21WA is suitable for a wide range of applications, including |
Industrial automation
Water treatment systems
HVAC systems
Beverage dispensing machines
Chemical processing
Medical equipment
Agricultural irrigation systems
The 1/2 Inch Water Flow Sensor SEN-HZ21WA is a reliable and accurate flow sensor designed for precise flow measurement in a variety of applications. Its digital output, adjustable pulse width, and built-in temperature compensation make it an ideal choice for industrial automation, water treatment, and other demanding applications.
1/2 Inch Water Flow Sensor SEN-HZ21WA DocumentationOverviewThe 1/2 Inch Water Flow Sensor SEN-HZ21WA is a digital flow sensor designed to measure the flow rate of liquids, particularly water, in various applications such as industrial automation, HVAC systems, and water supply management. This sensor provides accurate and reliable measurements with a high degree of precision.SpecificationsMeasuring range: 0-10 L/min
Accuracy: 2% of full scale
Power supply: 5V-24V DC
Output signal: Digital pulse output ( ttl level)
Interface: 3-pin connector (VCC, GND, OUT)
Operating temperature: -20C to 80CCode Examples### Example 1: Basic Water Flow Measurement using ArduinoIn this example, we will connect the SEN-HZ21WA sensor to an Arduino board to measure the water flow rate. We will use the sensor's digital pulse output to count the number of pulses per second, which corresponds to the flow rate.```cpp
const int flowSensorPin = 2; // Pin for flow sensor outputvolatile int pulseCount = 0;void setup() {
Serial.begin(9600);
pinMode(flowSensorPin, INPUT);
attachInterrupt(digitalPinToInterrupt(flowSensorPin), pulseCounter, RISING);
}void loop() {
pulseCount = 0;
delay(1000); // Wait for 1 second
float flowRate = (pulseCount / 7.5); // Convert pulse count to L/min
Serial.print("Flow rate: ");
Serial.print(flowRate);
Serial.println(" L/min");
}void pulseCounter() {
pulseCount++;
}
```### Example 2: Water Flow Monitoring using Raspberry Pi (Python)In this example, we will connect the SEN-HZ21WA sensor to a Raspberry Pi to monitor the water flow rate. We will use the RPi.GPIO library to read the sensor's digital pulse output and calculate the flow rate.```python
import RPi.GPIO as GPIO
import timeFLOW_SENSOR_PIN = 17GPIO.setmode(GPIO.BCM)
GPIO.setup(FLOW_SENSOR_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)pulse_count = 0def count_pulse(channel):
global pulse_count
pulse_count += 1GPIO.add_event_detect(FLOW_SENSOR_PIN, GPIO.RISING, callback=count_pulse)while True:
pulse_count = 0
time.sleep(1) # Wait for 1 second
flow_rate = (pulse_count / 7.5) # Convert pulse count to L/min
print("Flow rate: {:.2f} L/min".format(flow_rate))
```Troubleshooting and OptimizationsEnsure proper connections and wiring between the sensor and the microcontroller.
Adjust the sensor's power supply voltage according to the datasheet recommendations.
Implement debouncing or filtering techniques to eliminate noise and ensure accurate measurements.
Calibrate the sensor by measuring the flow rate at different points to ensure accurate readings.
Consider using flow rate calculation libraries or APIs for more accurate and robust measurements.DisclaimerThe provided code examples are for illustration purposes only and may require modifications to suit specific application requirements. The user is responsible for ensuring the accuracy and reliability of the sensor measurements and implementing necessary safety precautions.