Industrial Components Supplier - UK Alphasense High-Resolution Hydrogen Sulfide Sensor (H2S Sensor) 4-Electrode - H2S-B4 H2S-B4+

Product Introduction

1. Hydrogen Sulfide Sensor (H2S Sensor)H2S-B4 H2S-B4+ Product Description:

The H2S-B4 sensor is a PPB-level sensor designed for ambient air quality applications, featuring excellent baseline stability. It is available in our standard format (H2S-B4) and with our patented integrated smart technology (H2S-B4+), which integrates an IST board with memory chip and temperature sensor into the sensor. The plus sensor stores specific calibration, specification, and identification data on each sensor, allowing plug-and-play operation. The onboard temperature sensor improves the accuracy and ease of temperature compensation algorithms.

2. Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4 Typical Applications

Trace hydrogen sulfide monitoring in air quality, hydrogen sulfide gas transmitters

Hydrogen Sulfide Sensor (H2S Sensor)H2S-B4 H2S-B4+ Dimensions:

3. Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4Main Parameters

Sensitivity	2ppmH2S，nA/ppm	1450~2600
Response Time	t90 from zero to 2ppm H2S (s)	<60
Zero Current	Output in zero air at 20°C	-250~200
Interference	Average Interference (ppb)	1
Detection Value	ppb	1
Range	H2S Warranty Detection Range (ppm)	100
Linearity	ppb value of full-scale error, linear from 0 to 40ppm	< ±4
Overload	ppm of stable response to gas pulses	200

4.Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4Lifetime

Zero Drift	ppm change per year in laboratory air	<±100
Sensitivity Drift	Percentage change per year in laboratory air	<20
Operating Life	Time until output drops to 80% of original signal (months) (warranty 12 months)	>24

5.Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4Environment

Sensitivity at -20°C	At 2ppm, (output at -20°C / output at 20°C) %	77-90
Sensitivity at 50°C	At 2ppm, (output at 50°C / output at 20°C) %	100-110
Zero at -20°C	ppm change relative to 20°C	50~60
Zero at 50°C	ppm change relative to 20°C	-120~-160

6.Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4Cross Sensitivity

NO₂	Percentage sensitivity to 5ppm NO2 gas	<-10
Cl₂	Percentage sensitivity to 5ppm Cl2 gas	<-12
NO	Percentage sensitivity to 5ppm NO gas	<12
SO₂	Percentage sensitivity to 5ppm SO2 gas	<20
CO	Percentage sensitivity to 5ppm CO gas	<3
H₂	Percentage sensitivity to 100ppm H2 gas	<0.5
C₂H₄	Percentage sensitivity to 100ppm C2H4 gas	<0.1
NH₃	Percentage sensitivity to 5ppm NH3 gas	<0.1
CO₂	5%CO₂Percentage sensitivity to measured gas	<0.1

7.Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4Key Parameters

Temperature Range	℃	-30~50
Pressure Range	Kpa	80~120
Humidity Range	%rh	15~90
Storage Life	Sealed storage life at 3-20°C (months)	6
Load Resistor	Ω (recommended)	33~100
Weight	grams	<13

Hydrogen Sulfide Sensor (H2S Sensor)H2S-B4 H2S-B4+ IST Board Data

8.Hydrogen Sulfide Sensor (H2S Sensor) H2S-B4Compatible Sensor Board:

Unique Sensor Board (ISB) Alphasense B4 4-Electrode Gas Sensor - ISB

This unique sensor board (ISB) is used for Alphasense B4 series four-electrode gas sensors. The regulator provides dual-channel voltage output.

A low-noise bandgap provides bias voltage for NO sensors, while the ISB can measure oxidizing (CO, H2S, SO2, and NO) and reducing (O3 and NO2) gases.

The ISB is configured in four versions for specific sensors: NO, NO2, O3, and CO/H2S/SO2.