MNS-4H2S-100 Electrochemical H2S Gas Sensor 0-100 ppm
Product Description
Key Features
Target gas: Hydrogen Sulfide (H2S)
Electrochemical gas sensing technology
Linear output characteristics
Three-electrode configuration
Service life: approximately 2 years
Suitable for portable, fixed and OEM gas detectors
Technical Specifications
Product Model: MNS-4H2S-100
Brand: MANORSHI
Target Gas: Hydrogen Sulfide / H2S
Detection Principle: Electrochemical
Measurement Range: 0-100 ppm
Maximum Overload: 200 ppm
Sensitivity: 0.7 ± 0.25 μA/ppm
Resolution: 1 ppm
Response Time: <30 s
Bias Voltage: 0 mV
Output Characteristic: Linear
Repeatability: <±2%
Long-Term Stability: <15% signal value/year
Operating Temperature: -20°C to +50°C
Operating Pressure: 800-1200 mbar
Operating Humidity: 15%-90% RH
Recommended Storage Temperature: 0°C to +20°C
Service Life: Approximately 2 years
Warranty Period: 1 year
Maximum Open-Circuit Voltage: 1.3 V
Maximum Short-Circuit Current: <1.0 A
Recommended Load Resistor: 10 Ω
What Is the MNS-4H2S-100 H2S Sensor?
The MNS-4H2S-100 is an electrochemical gas sensor specifically designed to detect hydrogen sulfide, commonly identified by the chemical formula H2S.
Hydrogen sulfide is a toxic gas that may be present in wastewater treatment, oil and gas facilities, chemical processing plants, mining operations, sewers and other industrial environments.
The MNS-4H2S-100 converts the electrochemical reaction caused by H2S into an electrical current. The output signal changes according to the hydrogen sulfide concentration and can be processed by an external signal conditioning circuit to obtain a gas concentration reading.
How Does an Electrochemical H2S Sensor Work?
The MNS-4H2S-100 uses a three-electrode electrochemical sensing structure consisting of a working electrode, reference electrode and counter electrode.
When hydrogen sulfide reaches the sensing area, H2S molecules diffuse through the gas-permeable membrane and react at the working electrode.
This reaction generates an electrical current related to the H2S concentration. The reference electrode helps maintain a stable electrode potential, while the counter electrode completes the electrochemical reaction.
The generated current is then amplified and processed by the external electronic circuit to calculate the hydrogen sulfide concentration.
This electrochemical sensing principle provides high sensitivity, compact size and low power requirements, making it suitable for portable and fixed H2S gas detectors.
MNS-4H2S-100 Electrochemical H2S Gas Sensor
The MANORSHI MNS-4H2S-100 is a compact electrochemical hydrogen sulfide gas sensor designed for reliable H2S concentration measurement in portable gas detectors, fixed gas monitoring systems, industrial safety equipment and OEM gas detection products.
The sensor provides a 0-100 ppm H2S measurement range with a maximum overload of 200 ppm. With a response time of less than 30 seconds, 1 ppm resolution and 0.7 ± 0.25 μA/ppm sensitivity, the MNS-4H2S-100 is suitable for continuous hydrogen sulfide monitoring in industrial and environmental applications.
Its compact Ø20 mm package and three-electrode electrochemical structure make it suitable for integration into space-limited gas detection instruments.
Typical Applications
The MNS-4H2S-100 electrochemical hydrogen sulfide sensor can be used in a wide range of H2S detection applications, including:
Portable H2S gas detectors
Fixed hydrogen sulfide detectors
Multi-gas safety detectors
Industrial gas monitoring systems
Oil and gas safety equipment
Petrochemical facilities
Wastewater treatment plants
Sewer gas monitoring
Biogas monitoring systems
Mining safety equipment
Chemical processing facilities
Confined space gas detectors
Environmental monitoring instruments
Occupational safety equipment
OEM gas sensing products
H2S Detection for Industrial Safety
Hydrogen sulfide may be generated or released in oil and gas production, petroleum processing, wastewater treatment, mining, chemical manufacturing and other industrial processes.
Because H2S is toxic, industrial facilities often use gas detection equipment to monitor areas where hydrogen sulfide may accumulate.
The MNS-4H2S-100 provides a compact sensing element for manufacturers developing H2S monitors, fixed gas detectors and portable safety instruments.
Its 0-100 ppm measurement range and <30 second response time make it suitable for continuous hydrogen sulfide monitoring applications.
Why Choose the MANORSHI MNS-4H2S-100?
The MANORSHI MNS-4H2S-100 combines electrochemical H2S detection, fast response, compact dimensions and a three-electrode structure in one gas sensor.
Its 0-100 ppm range is suitable for many industrial hydrogen sulfide monitoring applications, while the <30 second response time supports rapid detection of changing H2S concentrations.
For OEM manufacturers, the compact Ø20 mm package provides a practical solution for integration into portable detectors, fixed gas monitoring equipment and multi-gas safety instruments.
Frequently Asked Questions
What gas does the MNS-4H2S-100 detect?
The MNS-4H2S-100 is designed to detect hydrogen sulfide, commonly abbreviated as H2S.
What type of gas sensor is the MNS-4H2S-100?
It is a three-electrode electrochemical hydrogen sulfide sensor.
What is the H2S measurement range?
The specified measurement range is 0-100 ppm.
What is the maximum overload?
The specified maximum overload is 200 ppm H2S.
What is the sensitivity of the sensor?
The nominal sensitivity is 0.7 ± 0.25 μA/ppm.
What is the resolution?
The specified resolution is 1 ppm.
What is the response time?
The response time is less than 30 seconds.
Does the sensor require a bias voltage?
The specified bias voltage is 0 mV.
What is the operating temperature range?
The MNS-4H2S-100 operates from -20°C to +50°C.
What is the operating humidity range?
The specified humidity range is 15%-90% RH.
What is the expected service life?
The specified service life is approximately 2 years under suitable storage and operating conditions.
Is the MNS-4H2S-100 suitable for portable gas detectors?
Yes. Its compact Ø20 mm design, electrochemical sensing principle and fast response make it suitable for portable H2S detectors and multi-gas instruments.
Can the MNS-4H2S-100 be used in OEM products?
Yes. It is designed for integration into OEM hydrogen sulfide detectors, industrial safety instruments, environmental monitoring systems and other gas detection equipment.