SKU: SENS-3101
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DFRobot Gravity Analog Water Pressure Sensor - G1/2 to G1/4 Connector, 0-1.6 MPa, 0.5-4.5V Output

₹1,969.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity Analog Water Pressure Sensor is a 5V-compatible transducer designed for liquid and gas pressure measurement up to 1.6 MPa, providing a linear 0.5-4.5V analog output for easy integration with Arduino, Raspberry Pi, and other 5V microcontroller platforms via its standard 3-pin Gravity interface.

Features

  • Measures liquid/gas pressure from 0 to 1.6 MPa (≈232 psi) with high linearity.
  • Provides a standard 0.5V to 4.5V analog output signal proportional to applied pressure.
  • Features a DFRobot Gravity 3-pin interface (Signal-VCC-GND) for plug-and-play wiring with Arduino shields.
  • Constructed with an IP68 waterproof, corrosion-resistant housing for durable operation in wet environments.
  • Operates from a single +5VDC supply with a low 2.8mA quiescent current.

Out of stock

Description

This analog pressure sensor utilizes a robust internal sensing element to translate applied pressure into a precise linear voltage signal. Its output range from 0.5V (at zero pressure) to 4.5V (at full scale) ensures excellent signal-to-noise ratio and compatibility with standard microcontroller ADC inputs. The sensor is engineered for stability across a wide operating temperature range from -25°C to +85°C.

Housed in an IP68-rated enclosure with a G1/2 threaded port and included G1/2 to G1/4 adapter, it is designed for direct in-line installation in plumbing, irrigation, or pneumatic systems. The fast <2ms response time makes it suitable for dynamic pressure monitoring applications in automation and control systems.

Key Features

  • High-Linearity Output: Delivers a 0.5–4.5V analog signal directly proportional to pressure for accurate ADC readings.
  • Robust Fluid Compatibility: Suitable for use with water and non-corrosive gases, thanks to its sealed, durable construction.
  • Gravity Interface Standard: 3-pin connector (Signal, VCC, GND) enables quick, foolproof connection to DFRobot expansion shields and 5V logic systems.
  • Industrial-Grade Protection: IP68 waterproof rating ensures reliable performance in submerged or high-humidity conditions.
  • Wide Operational Envelope: Functions accurately across an extended temperature range from -25°C to +85°C.
  • Fast Dynamic Response: Sub-2 millisecond response time captures rapid pressure fluctuations effectively.
  • Low Power Consumption: Draws only 2.8mA quiescent current, ideal for battery-powered monitoring nodes.
  • Complete Installation Kit: Includes sensor with G1/2 port and a G1/2 to G1/4 thread converter for flexible mounting.

Applications

  • Smart irrigation and water management system pressure monitoring.
  • Residential and commercial building water supply line pressure diagnostics.
  • Liquid level measurement in tanks, reservoirs, and aquaculture systems via hydrostatic pressure.
  • Pneumatic and hydraulic system pressure feedback for robotics and industrial automation.
  • DIY environmental monitoring stations for river, lake, or well water level tracking.

Technical Specifications

Pressure Measurement Range0 to 1.6 MPa
Maximum Working Pressure≤ 2.0 MPa
Output Signal0.5 V to 4.5 V Analog (Linear)
Supply Voltage+5 VDC
Quiescent Current2.8 mA
Response Time< 2.0 ms
Operating Temperature-25°C to +85°C
Waterproof RatingIP68
InterfaceDFRobot Gravity 3-pin (Signal, VCC, GND)
Thread SizeG1/2 (includes G1/2 to G1/4 adapter)
Compatible MediaLiquid / Gas (non-corrosive)

Frequently Asked Questions

What is the output signal of this pressure sensor and how do I connect it to an Arduino?

The sensor provides a linear analog voltage output from 0.5V (at 0 MPa) to 4.5V (at 1.6 MPa). Connect the sensor's Gravity 3-pin cable: Red (VCC) to Arduino 5V, Black (GND) to GND, and Yellow (Signal) to any analog input pin (e.g., A0). The voltage can be read directly using the analogRead() function.

Can this sensor be used with corrosive liquids or high-pressure steam?

No. This sensor is designed for use with water and non-corrosive gases only. It is not rated for use with corrosive chemicals, acids, alkalis, or high-temperature steam, as these can damage the internal sensing element and seals. Always verify media compatibility before installation.

How do I convert the sensor's output voltage to a pressure reading in my code?

Use a linear mapping formula. First, read the analog value (0-1023 for a 10-bit ADC). Convert it to voltage: Voltage = (AnalogValue / 1023.0) * 5.0. Then, calculate pressure: Pressure_MPa = ((Voltage - 0.5) / (4.5 - 0.5)) * 1.6. This yields pressure in MPa. For PSI, multiply the MPa result by approximately 145.

What is the purpose of the included G1/2 to G1/4 thread connector?

The sensor body has a female G1/2 thread port. The included brass adapter converts this to a male G1/4 thread, which is a very common size for pneumatic fittings, water filters, and irrigation components. This adapter provides flexibility for integrating the sensor into different types of piping systems without requiring custom fittings.

Is this sensor suitable for outdoor or permanently submerged applications?

Yes, its IP68 waterproof rating certifies protection against continuous immersion in water under specified conditions. It is suitable for outdoor use, well monitoring, or submerged tank level sensing, provided the operating temperature remains within its -25°C to +85°C range and the media is non-corrosive.

Package Includes

  • 1 x Gravity Analog Water Pressure Sensor
  • 1 x G1/2 to G1/4 Thread Connector (pre-mounted)

Additional Information

Weight 0.1 kg
Dimensions 5 × 10 × 2 cm