SKU: SENS-1317
📋 GST Invoice Available

HS-S37A Water Depth Sensor - Analog Output, 3-Pin Interface

₹80.00 (Inclusive of all taxes)
Out of Stock

The HS-S37A is an analog water depth sensor with a stainless steel probe, providing a voltage output proportional to submersion level. It operates on 3.3V or 5V DC and interfaces easily with Arduino, ESP32, and other microcontrollers via its simple 3-pin (VCC, GND, Signal) connection.

Features

  • Analog voltage output directly proportional to water depth for precise measurement.
  • Wide 3.3V to 5V DC operating voltage compatibility for flexible system integration.
  • Simple 3-pin interface (VCC, GND, Signal) for quick connection to microcontrollers.
  • Stainless steel construction and dual screw mounting for durable, stable installation.
  • Includes sample code support for Arduino IDE, Python, and Mixly graphical programming.

Out of stock

Description

The HS-S37A Water Depth Sensor operates on the principle of variable resistance. Multiple exposed parallel copper traces on its probe form a conductive path; as water submerges more traces, the electrical resistance between them decreases. This change in resistance is converted into a proportional analog voltage signal, which is output via the signal pin for direct reading by an ADC (Analog-to-Digital Converter) on a microcontroller.

Designed for reliability, the sensor features a stainless steel housing for corrosion resistance in aqueous environments. Its fast response time enables real-time monitoring of liquid levels in tanks, reservoirs, or for leak detection. The straightforward interface and provided code libraries make it suitable for educational projects, DIY automation, and basic industrial monitoring systems.

Key Features

  • Analog output provides continuous, high-resolution depth measurement.
  • Dual-voltage operation supports both 3.3V and 5V logic microcontrollers and development boards.
  • Robust stainless steel probe construction ensures long-term durability in wet conditions.
  • Integrated dual mounting holes facilitate secure and stable physical installation.
  • Low power consumption with a working current under 50 mA.
  • Fast response time of ≤500 ms for real-time level monitoring.
  • Comprehensive software support with sample code for multiple platforms.
  • Compact form factor (65mm length) allows for installation in confined spaces.

Applications

  • Residential and commercial water tank level monitoring and control systems.
  • Rainfall measurement and data logging for weather stations.
  • Liquid leak detection and alarm systems in basements or industrial facilities.
  • Educational demonstrations of analog sensing principles in STEM projects.
  • Simple liquid level control in DIY hydroponics or aquarium automation.

Technical Specifications

Model NumberHS-S37A
Item TypeWater Depth Sensor
Output SignalAnalog Voltage
Operating Voltage3.3V - 5V DC
Working Current≤ 50 mA
Response Time≤ 500 ms
Probe MaterialStainless Steel
Interface3-Pin (VCC, GND, Signal)
Length65 mm
Width18 mm
Weight0.5 g

Frequently Asked Questions

What is the operating voltage range for the HS-S37A sensor?

The HS-S37A sensor is designed to operate on a DC supply voltage between 3.3V and 5V. This dual-voltage compatibility allows it to interface directly with common microcontroller platforms like 3.3V ESP32 boards or 5V Arduino Uno boards without requiring a level shifter.

How do I calculate the water depth from the analog output?

Depth is calculated by reading the analog voltage via an ADC, then applying the formula: Depth = (Current ADC Reading - Initial Dry ADC Reading) / 100. The '100' is a scaling factor; you may need to calibrate this value for your specific setup and liquid conductivity for optimal accuracy.

Can this sensor be used with saltwater or other conductive liquids?

While the stainless steel construction offers some corrosion resistance, the sensor measures conductivity. Using it with highly conductive liquids like saltwater will significantly alter the resistance-to-depth relationship, requiring extensive recalibration. It is best suited for use with fresh water or liquids with consistent, known conductivity.

What is the purpose of the buzzer support mentioned?

The sensor's documentation includes guidance on connecting an external active buzzer to a microcontroller's digital output pin. Your code can then trigger the buzzer as an audible alarm when the sensor's analog reading exceeds a predefined threshold, indicating a high water level or leak condition.

Package Includes

  • 1 x HS-S37A Water Depth Sensor

Additional Information

Weight 0.0005 kg
Dimensions 6.5 × 1.8 cm