DFRobot Gravity H2 Sensor (Calibrated) &#8211; I2C, UART and analog

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SKU: rz2439922 Category: Gas and Dust Sensor

Description

This is a sensor that detects hydrogen concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of hydrogen in the environment. Can be widely used in the detection of hydrogen in industrial and environmental protection fields.The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years.

The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino ESP32, and RASPBERRY PI. The easy-to-use Gravity interface, coupled with our sample code, can quickly build a hydrogen concentration detector.

DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF, which are used in exactly the same way and data format, so you can combine them according to your needs.

Application:

Industrial hydrogen fluoride detection
Environmental protection device

Connection Diagram

Features:

Factory calibrated, accurate measurement
High sensitivity, low power consumption
Excellent stability and anti-interference
Three output modes: I2C, UART and analog
Long service life(2 years)
Compatible with 3.3~5.5V main controllers
32 modifiable I2C addresses
Reverse connection protection
Temperature compensation
Threshold alarm
It use I2C, UART and analog communication protocol to make smooth commutation between sensor and micro-controller.

Package Includes:

1 x DFRobot Gravity H2 Sensor (Calibrated) – I2C, UART and analog

Additional information

Detection Gas	Hydrogen (H2)
Detection range	0~1000ppm
Working Voltage	3.3～5.5V DC
Working Current	＜5mA
Output Signal	I2C , UART (0~3V) , analog voltage
Working Temperature	-20～50℃
Working Humidity	15～90%RH (non-condensing)
Storage Temperature	-20～50℃
Communication Protocol	I2C , UART and analog
Compatibility	Arduino , ESP32 , Raspberry pi
Storage Humidity	15～90%RH (non-condensing)
Lifespan	>2 years (in the air)
Adapter Plate Size	37 x 32mm

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Shipping & Delivery

Shipping and Delivery Policy

1. Shipping Process:

Orders are processed within 1-2 business days after payment confirmation.
Delivery time varies based on location and selected shipping method, typically ranging between 3-7 business days.
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5. Delivery Issues:

If a package is delayed, lost, or damaged during transit, please contact our support team immediately.
Claims for lost or damaged items must be reported within 48 hours of delivery.

6. No Return Policy for Opened/Soldered Products:

We do not accept returns for products that have been opened, used, or soldered.
Ensure you verify product compatibility before purchase, as returns will only be accepted for unopened and unused items in their original packaging.

7. Refund Policy:

Refunds will be issued only for canceled orders before shipment or wrong/damaged items received (subject to investigation).
No refunds or replacements for products that have been tampered with, soldered, or physically damaged by the customer.

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Resolution of Particle Mass Concentration	1μg/mᶟ
Temperature Measurement Range	0~99℃
Temperature Measurement Resolution	0.1℃
Humidity Measurement Range	0~99%
Humidity Measurement Resolution	0.1%
Humidity Measurement Accuracy	±2%
Single Response Time	＜1s
Comprehensive Response Time	≤10s
DC Supply Voltage	Typ: 5V Min: 4.5V Max: 5.5V
Working Current	≤100mA
Standby Current	≤200mA
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Working Pressure Range	0.5~2.0Bar
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Output Signal	I2C , UART (0~3V) , analog voltage
Lifespan	＞2 years (in air)
Working Humidity Range	0-99% RH (non-condensing)
Working Temperature Range (°C)	-20°C ~ +50°C
Product Dimensions	32mm x 27mm/1.26 x 1.06 inch
Response Time ( μS)	＜5S
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Working Current	＜5mA
Output Signal	I2C , UART (0~3V) , analog voltage
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Working Temperature Range (°C)	-20 to 50

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Circuit Voltage	5.0±0.2V DC
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Heater Current	56±5mA
Sensing Principle	MOS type
Heater Resistance	approx 59Ω at room temp. (typical)
Load Resistance	variable 0.45kΩ min
Sensor Resistance	10kΩ ~ 100kΩ in air
Standard Package	TO-5 metal can
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Baseline offset(*1)	<±10ppm equivalent
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Heater power consumption	525mW (typical)
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