Ultrasonic Liquid Level Sensor

SKU: SEN0356 Brand: DFRobot

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This product has been retired. It is no longer available, but this page has been kept for reference.

Introduction

Based on the principle of ultrasonic detection, this liquid level sensor can accurately measure the liquid level of various toxic substances, strong acid/alkali, or pure liquid in high-temperature and high-pressure closed containers without contacting with the solution.

The maximum detection height of the sensor reaches up to 2m. It should be powered at DC3.3V-12V. The sensor adopts UART output and is compatible with all sorts of main-controller boards like Arduino, Raspberry Pi. Besides that, the module offers only 1s response time and 1mm resolution. The sensor can stably output the current liquid level in real-time, and even no need to restart when the container gradually empties, and then liquid backs up into it again. Moreover, it comes with temperature compensation that can automatically correct the measured value according to the actual working temperature to ensure that the detected height is accurate enough.

How to install an ultrasonic liquid level sensor?

Ultrasonic-liquid-Level-Sensor-diagram

The module adopts an integrated probe design, small in size, and easy to install. The sensor has no special requirements for the material of liquid or container to be detected since the ultrasonic wave can penetrate metal, ceramic, plastic, and glass, etc. It can be widely used for liquid level real-time detection of various media in fields, such as petrochemical, metallurgy, electric power, pharmaceutical, water supply, and drainage, environmental protection.

Ultrasonic-liquid-Level-Sensor-diagram-1

Note:

1. At room temperature, the blind zone and detection limit height of the sensor vary with the material of containers, such as metal, glass, ceramics, non foaming plastic, etc.

2. The blind zone and detection limit height of the sensor also will be different for the same material container with different thickness at room temperature.

3. When the liquid level to be detected exceeds the detection range of the sensor, or the liquid level fluctuates greatly, the sensor could not give stable performance.

4. You may have to apply Couplant or AB glue on the surface of the sensor in actual use. The couplant can be used for testing. If you need to fix your sensor at a position for a long time, AB glue is highly recommended (A glue and B glue should be mixed before using).

Specification

Operating Voltage: DC3.3V-12V
Average Current: ＜35mA
Blind Zone: ≤50mm
Measuring Range: 50mm-20000mm
Operating Cycle: 1s
Output: UART
Resolution: 1mm
Response Time(with liquid): 1s
Response Time(without liquid): 10s
Accuracy(at room temperature): (±5+S*0.5%) mm
Probe Center Frequency: 2MHz
ESD: ±4/±8KV
Operating Temperature: -15-60℃
Storage Temperature: -25-80℃
Material Compatible: metal, plastic, glass, etc
Dimension: diameter 27.7mm±0.5mm; height 17mm±1mm; cable length 450mm±10mm

Documents

Product wiki

Shipping List

Ultrasonic Liquid Level Sensor x1
Couplant x1
AB Glue x1

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Retired

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Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
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Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

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$12+ for Pack and Track (3+ days, tracked)
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If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

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