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12 STANDARD ETAPE LIQUID LEVEL SENSOR WITH PLASTIC CASING, ADAFRUIT 2656

  Id broj: 724
Marka:ADAFRUIT
Zaliha:   NE
Dobava:7 dani
Cijena:78,16 €
liquid, flow ADAFRUIT 12 Standard eTape Liquid Level Sensor with Plastic Casing, adafruit 2656
liquid, flow ADAFRUIT 12 Standard eTape Liquid Level Sensor with Plastic Casing, adafruit 2656
 

DESCRIPTION

 

This eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. What separates this from our other eTape Liquid Sensor is the hard plastic jacket that makes it less susceptible to damage.

 

The eTape sensor's envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed. This results in a change in resistance that corresponds to the distance from the top of the sensor to the surface of the fluid. The sensor's resistive output is inversely proportional to the height of the liquid: the lower the liquid level, the higher the output resistance; the higher the liquid level, the lower the output resistance.

 

This is a very unique sensor, adafruit haven't seen anything else that is affordable and accurate for measuring liquid level. This particular sensor is the 12" model. It comes with a 3-pin JST connector.

 

Since the sensor is resistive, it is easy to read it using a microcontroller/Arduino ADC pin. Check the tutorials tab for a quick-start pointer.

 

Note: This product only comes with the plastic enclosed eTape Liquid Level Sensor.  In adafruit demo, adafruit set it up with an Adafruit Metro, a TB6612 Stepper Motor Driver Breakout Board, and an Automotive Gauge Stepper Motor.

 

 

TECHNICAL DETAILS

 

Dimensions:

- 305mm x 29mm x 13mm / 12" x 1.14" x 0.51"

- Weight: 56g

- Sensor Output: 400-2000Ω ±20%

- Ref. Resistance: 2000Ω ±20%

- Actuation Depth: Nominal 25.4mm / 1"

- Resistance Gradient: 60Ω/cm / 150Ω /inch

- Power Rating: 0.5 Watts

- Temperature Range: 15°F - 150°F / -9°C - 65°C

- Standard eTape Datasheet

 

Adafruit don't have a detailed tutorial for this sensor but it acts very much like a thermistor so adafruit suggest checking out that tutorial for background, and then following these instructions:

 

Connect pin #2 of the sensor to ground, then pin #3 to a 560 ohm resistor. The other side of the 560 ohm resistor to VCC (3.3V or 5V for example) to create a resistor divider. The ADC pin connects to the point between the resistor and sensor.