Components
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A high-precision pressure control module designed for spectral absorption systems, this component ensures stable gas measurement by maintaining consistent internal pressure. It minimizes the impact of external pressure and altitude fluctuations on absorption intensity, delivering reliable and accurate readings in varied environmental conditions.
Key Features
±5 Pa pressure stability over 24 hours
Supports a pressure range of 25 kPa to 100 kPa
Intelligent, rapid pressure regulation
High precision and stable control performance
UART serial port for temperature setting
24V DC power supply
Functionality
To function properly, the module should be integrated with:
A pressure sensor
A proportional valve
This forms a closed-loop control system. For optimal performance, pairing with a mass flow meter is recommended.
Applications
Ideal for:
Gas monitoring systems using multiple reflection absorption cells
Scenarios requiring precise gas pool pressure control across various absorption spectra
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This advanced temperature control module utilizes a high-performance PID algorithm to precisely regulate the air chamber temperature, significantly enhancing sensor stability and operational accuracy. Designed to perform under rapidly changing environmental conditions, it ensures the sensor operates in its optimal thermal state, ultimately increasing system reliability and extending the lifespan of sensitive components like lasers.
Key Features
Exceptional temperature stability: <0.001°C @ 20°C over 24 hours
Ultra-low temperature drift: only 0.01°C
Fast and intelligent PID-based thermal response
Compatible with a broad range of models
Excellent environmental tolerance:
– Operating Temp: -40°C to +60°C
– Humidity Range: 0–98% RH
UART serial port for temperature control setting
Wide input voltage support: 12–24V
Output voltage: ±90% of Vin (adjustable)
Current range: 0 to ±3A
System Integration
For closed-loop operation, this component should be used with:
A thermistor
A heating module
Using TEC (Thermoelectric Cooling) in this setup is recommended for achieving the most stable performance.
Applications
Perfect for:
Temperature control of critical optical paths and core circuits in precision analyzers and sensing systems.
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The laser driver component is essential for stable and precise laser operation, delivering low-noise current drive to ensure clean power delivery to the laser. By modulating the input voltage, it allows for accurate control of laser switching and output power, adapting to different operating conditions with minimal signal distortion.
Key Features
Ultra-low current noise: as low as 1mA RMS
Adjustable output current: up to ±3A
Highly stable current bias modulation
Exceptional temperature performance:
Stability: <0.001°C @ 20°C (24-hour)
Environmental drift: just 0.0001°C
Control precision: ±0.01°C
Change rate range: 0.01–2.5°C/s
UART Serial Port interface for temperature control
Operating temperature: -40°C to +60°C
Wide humidity tolerance: 0–98% RH
5V DC supply
Output voltage: ±90% of Vin (adjustable)
Applications
Designed for driving VCSEL, DFB, and ICL lasers with excellent thermal and electrical stability.
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This compact, high-precision gas absorption chamber integrates lasers, detectors, and gas cells into a miniaturized, high-density module designed for optimal optical performance. Featuring a patented optical path design, it delivers reduced noise, improved detection accuracy, and fast response times—making it ideal for demanding analytical applications in compact devices.
Key Features
Effective optical path length: 3 meters in a small volume
Wavelength compatibility: 740–780 nm, 1350–1700 nm, 1960–2400 nm
Optical output power: 2 mW
Temperature tolerance: -40°C to +70°C
High stability chamber structure with single-mode fiber output
Pressure range: <0.3 MPa
Gas volume options: 34 mL or 22 mL
Material: lightweight and durable aluminum
Output interfaces: PD/PD-SMA coaxial, IPEX-1 cable, or fiber optic cable
Applications
Carbon emission source monitoring and identification
Portable analytical instruments
Online analytical systems for industrial or environmental use
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This advanced gas absorption chamber combines lasers, detectors, and gas cells in a compact, high-density optical package. Engineered for precision and durability, it features a patented optical design that minimizes signal noise and enhances detection accuracy. With its extended 10-meter optical path housed in a compact aluminum body, this unit is ideal for sensitive environmental and industrial monitoring applications.
Key Features
10-meter effective optical path in a miniature format
Supports wavelength ranges: 740–780 nm, 1350–1700 nm, 1960–2400 nm
Optical output power: 2 mW
Stable operation across -40°C to +70°C
Output options: PD or fiber optic cable
Pressure range: <0.3 MPa
Gas volume: 69 mL
Compact, durable aluminum housing
Single-mode optical fiber output
All input interfaces follow standard specifications
Applications
Pollution source detection and carbon emissions monitoring
Portable and field-deployable analytical instruments
Online analytical systems in environmental or industrial settings
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This high-performance mid-infrared (MIR) gas absorption cell features a 25-meter effective optical path within a highly compact chamber. Engineered with cutting-edge laser and detector integration, the device offers exceptional detection accuracy and fast response, while minimizing optical noise through its patented design. Its small volume and robust structure make it ideal for demanding industrial and environmental sensing applications.
Key Features
25-meter optical path in a miniaturized chamber
Wavelength support: 1630–1670 nm and 1960–2400 nm
Optical output power: 2 mW
Wide operational temperature range: -20°C to +70°C
Storage temperature: -40°C to +65°C
Pressure tolerance: <0.3 MPa
Gas volume: 290 mL
Single-mode optical fiber output (PD/fiber optic cable)
Precision-machined aluminum housing
All interfaces conform to standard specifications
Applications
Carbon emission monitoring and detection of air pollutants
Industrial online control systems
Use cases requiring long optical path gas analysis
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This advanced mid-infrared (MIR) gas chamber features a 25-meter optical path within a lightweight, compact structure, integrating both laser diode (LD) and photodetector (PD) in a single optimized unit. Designed for low-noise performance and high detection sensitivity, the chamber supports customizable wavelength ranges and includes built-in temperature and pressure sensors, making it ideal for ppb-level gas monitoring applications.
Key Features
25m effective optical path with low signal noise
Customizable wavelength support: 700 nm to 12 μm
Single or dual integrated light sources
Integrated temperature and pressure sensors
LD package: TO66 | PD package: TO8
Pressure range: <0.3 MPa
Gas volume: 225 mL
Operating temperature: -20°C to +60°C
Compact and durable design with high system integration
Applications
Atmospheric background gas monitoring
Online environmental and industrial monitoring
Ideal for applications requiring ppb-level sensitivity
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The CRDS (Cavity Ring-Down Spectroscopy) resonator is a critical element in ultra-sensitive trace gas detection systems. Featuring an independently designed optical path, the cavity delivers long optical paths with low noise, exceptional environmental adaptability, and structural resilience. Through advanced material selection and precise engineering, it ensures superior measurement accuracy and sensitivity in complex conditions.
Key Features
Temperature stability: <0.001°C @ 20°C (24-hour)
Temperature drift: only 0.0001°C
Optimal control stability: ±0.01°C
Temperature ramping range: 0.01–2.5°C/s
Temperature setting via UART Serial port
Wide voltage input: 12–24V DC
Settable output voltage: ±90% of Vin
Current output range: 0 to ±3A
Operating temperature: -40°C to +60°C
Humidity range: 0–98% RH
Constructed from low thermal expansion material for superior cavity stability
Resistant to thermal deformation and mechanical vibrations
Applications
Greenhouse gas monitoring with high sensitivity
Isotope and specialty gas analysis
Trace gas detection in scientific and industrial research
Components comparison
MODULES · environment
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This compact module leverages TDLAS (Tunable Diode Laser Absorption Spectroscopy) technology for real-time, online measurement of key greenhouse gases such as CO₂, CH₄, and H₂O. Featuring a built-in laser control template, gas absorption cell, pump, and signal processing, it enables independent sampling with high accuracy and rapid response. Custom gas targets are also supported.
Key Features
High-precision measurement with T90 < 45s response time
Stable flow with independent sampling
Small-scale design for flexible system integration
Convenient RS485 output and standard interface
Compatible with closed-loop or mobile flux systems
Specifications
Principle: TDLAS
Input Power: 24V DC, 500 mA (steady state)
Measured Gases: CO₂, CH₄, H₂O (customizable)
Measurement Accuracy:
CO₂: ±0.1 ppm (0–10,000 ppm)
CH₄: ±0.01 ppm (0–100 ppm)
H₂O: ±10 ppm (0–5%)
Measurement Error: ±3% F.S
Output Interface: RS485
Applications
Closed-loop eddy flux monitoring systems
Soil flux monitoring and environmental research
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This advanced module uses Quantum Cascade Laser Absorption Spectroscopy (QCLAS) to deliver ultra-precise, real-time measurement of multiple greenhouse gases. Equipped with a built-in pump and filter system, it ensures stable sampling, instant response, and flexible system integration. Ideal for both stationary and mobile environmental monitoring, this module offers exceptional sensitivity down to parts-per-billion (ppb) levels.
Key Features
Ultra-precision measurement with T90 < 45s
Fast response and stable output with intelligent sampling
Flexible interface and compact design for integration
RS485 output interface for reliable data transmission
Expanded gas detection via extended laser support
Specifications
Principle: QCLAS
Input Power: 24V DC, 600 mA (steady state)
Measured Gases: CO₂, CH₄, N₂O, H₂O (customizable)
Measurement Error: ±3% F.S
Output Mode: RS485
Measurement Accuracy (1s, 1σ)
CO₂: 0.1 ppm
CH₄: 0.35 ppb
N₂O: 0.3 ppb
H₂O: 80 ppm
Accuracy (5 min, 1σ)
CO₂: 0.05 ppm
CH₄: 0.08 ppb
N₂O: 0.08 ppb
H₂O: 30 ppm
Measurement Range
CO₂: 0–2000 ppm
CH₄: 0–10 ppm
N₂O: 0–5 ppm
H₂O: 0–3%
Applications
Closed-loop eddy flux systems
Mobile vehicular greenhouse gas observation platforms
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This advanced module utilizes Cavity Ring-Down Spectroscopy (CRDS) with a miniaturized optical cavity and precise temperature/pressure control. It enables synchronous, high-accuracy measurement of up to four gases simultaneously (CO, CO₂, CH₄, H₂O), with an effective optical path of 60 km. The system delivers high stability, ultra-low drift, and is engineered for ambient air applications requiring ppb-level sensitivity.
Key Features
Multi-gas monitoring (4 channels simultaneously)
Optical path equivalent: 60 km
Precise temperature and pressure compensation
Ultra-stable operation with low noise and drift
Anti-interference and long-term consistency
220V AC power with intelligent power regulation
Specifications
Principle: CRDS
Gases Measured: CO, CO₂, CH₄, H₂O
Power Supply: 220V AC
Power Consumption: 120W startup / 70W average
Measurement Index (CRDS Module)
CO
– Range: 0–10 ppm
– Ensure Accuracy: 0–1 ppm
– Stability (24h): <5 ppb
– Accuracy (5 min, 1σ): 0.005 ppm
– Drift (24h): <5 ppb
CO₂
– Range: 0–1000 ppm
– Ensure Accuracy: 300–500 ppm
– Stability (24h): <25 ppb
– Accuracy (5 min, 1σ): <5 ppb
– Drift (24h): <100 ppb
CH₄
– Range: 0–20 ppm
– Ensure Accuracy: 1–3 ppm
– Stability (24h): <0.5 ppb
– Accuracy (5 min, 1σ): <0.05 ppb
– Drift (24h): <1 ppb
H₂O
– Range: 0–7%
– Ensure Accuracy: 0–3%
– Stability (24h): <100 ppm
– Accuracy (5 min, 1σ): <5 ppm
– Drift (24h): <100 ppm
Applications
High-precision greenhouse gas monitoring for ambient air
Research, industrial, and governmental environmental monitoring
Modules Environment comparison
MODULES · industry
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This sensor uses Non-Dispersive Infrared Spectroscopy (NDIR) with a dual optical path design and integrated compensation algorithms for temperature, drift, and cross-interference. Designed for real-time online monitoring of toxic and greenhouse gases, the module offers high stability, low energy consumption, and extensive gas range coverage—ideal for safety, industrial, and environmental applications.
Key Features
Low drift and ultra-low power consumption (<2W at 24V DC)
Response time: 1.5 to 15 seconds
High dynamic range with repeatability ±0.3% (truth value)
>40,000-hour lifespan
Wide compatibility with industrial systems (RS232)
Cross-interference compensation: <2% F.S.
Operating current: <100 mA
Operating temperature: 5–45°C
Communication interface: RS232
Supported Gases & Ranges
CO: 0–500 ppm
CO₂: 0–100 ppm
N₂O: 0–100 ppm
CH₄: 0–1000 ppm
CnFn (e.g., refrigerants): 0–1000 ppm
CF₄: 0–50 ppm
SF₆: 0–50 ppm
Performance
Repeatability: ±0.3%
Linearity: 1% F.S
Cross-interference: <2% F.S
Applications
Ambient gas monitoring
Industrial process control
Gas leakage detection
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Utilizing Non-Dispersive Ultraviolet Spectroscopy (NDUV), this sensor integrates a dual optical path design with compensation algorithms for temperature, drift, and cross-interference. It delivers real-time online monitoring of hazardous gases with low energy consumption, high stability, and wide application flexibility. Ideal for industrial safety and environmental monitoring, it detects toxic gases with fast response and scalable integration.
Key Features
Based on NDUV technology
Response time: 1.5 to 15 seconds
Low energy use (<2W @ 24V DC)
Long operating life: >40,000 hours
High dynamic range and fast recovery
Communication via RS232
Repeatability: ±0.5% (truth value)
Linear error: 0.5% F.S
Cross-interference: <2% F.S
Operating current: <100 mA
Operating temperature: 5–45°C
Supported Gases & Ranges
O₂: 0–50 ppm
Cl₂: 0–100 ppm
H₂S: 0–100 ppm
SO₂: 0–50 ppm
NO₂: 0–50 ppm
NO: 0–50 ppm
Applications
Ambient gas monitoring
Industrial process control
Gas leak detection and safety systems
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Utilizing Tunable Diode Laser Absorption Spectroscopy (TDLAS), this sensor delivers real-time, high-precision measurement of oxygen concentration. Featuring a multiple-reflection optical cell, harmonic demodulation, and anti-corrosion design, it provides fast response, strong stability, and excellent long-term reliability with no cross-interference from other gases. Available in both medium and high precision versions for varied application needs.
Key Features
Real-time, high-accuracy O₂ concentration measurement
Low drift, excellent long-term consistency
Immune to interference from other gases
Corrosion-resistant, low-maintenance design
Industrial-grade interface for field integration
Technical Specifications (Laser Oxygen Sensor – TDLAS)
Medium Precision Version
Principle: TDLAS
Operating Voltage: 24V DC
Operating Current: <100 mA
Operating Temperature: -20°C to +50°C
Communication Mode: RS232 / 4–20 mA
Measurement Range: 0 to 30%
Response Time: T90 < 15 seconds
Linear Error: ±3%
Repeatability: ±0.5% F.S
Zero Drift: <±2% F.S per month
High Precision Version
Principle: TDLAS
Operating Voltage: 24V DC
Operating Current: <100 mA
Operating Temperature: -20°C to +50°C
Communication Mode: RS232 / 4–20 mA
Measurement Range: 0 to 1%
Response Time: <15 seconds
Linear Error: ±1% F.S
Repeatability: ±0.5% F.S
Zero Drift: <±2% F.S per month
Applications
Industrial oxygen monitoring across combustion, safety, and manufacturing systems
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This compact sensor utilizes Tunable Diode Laser Absorption Spectroscopy (TDLAS) and a simplified wave gas chamber design to deliver real-time ambient gas monitoring with high precision and reliability. The device features a dust-proof and waterproof IP65 design, making it ideal for industrial environments. It is optimized for minimal drift, robust performance, and self-adaptive optical path correction.
Key Features
Based on TDLAS technology
Low power consumption, high reliability
IP65-rated for dust and water protection
Immune to temperature variation and mechanical stress
Built-in self-adaptive optical path correction
Supported Gases and Specifications
CH₄ (Methane)
– Operating Temperature: -20°C to 60°C
– Size: φ40 × L110 mm
– Measurement Range: 0–100% VOL
– Sensitivity: 50 ppm
H₂S (Hydrogen Sulfide)
– Operating Temperature: -40°C to 70°C
– Size: φ35 × L60 mm
– Measurement Range: 0–100% VOL
– Sensitivity: 500 ppm
C₂H₆ (Ethane)
– Operating Temperature: -10°C to 50°C
– Size: φ35 × L60 mm
– Measurement Range: 0–100% VOL
– Sensitivity: 500 ppm
O₂ (Oxygen)
– Operating Temperature: -20°C to 60°C
– Size: φ40 × L130 mm
– Measurement Range: 0–100% VOL
– Sensitivity: 500–1000 ppm
CO (Carbon Monoxide)
– Operating Temperature: -20°C to 60°C
– Size: φ40 × L130 mm
– Measurement Range: 0–10% VOL
– Sensitivity: 30–60 ppm
CO₂ (Carbon Dioxide)
– Operating Temperature: -20°C to 60°C
– Size: φ40 × L130 mm
– Measurement Range: 0–10% VOL
– Sensitivity: 30–60 ppm
NH₃ (Ammonia)
– Operating Temperature: -40°C to 60°C
– Size: φ40 × L130 mm
– Measurement Range: 0–200 ppm
– Sensitivity: 2–5 ppm
Applications
Industrial safety monitoring
Ambient air monitoring
Gas leakage detection
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The Micro Laser Telemetry Module leverages TDLAS (Tunable Diode Laser Absorption Spectroscopy) to achieve accurate, real-time measurement of flammable, explosive, and toxic gases in compact or remote environments. Designed for integration into limited-space applications, it combines lightweight hardware, rapid response, and efficient remote sensing capabilities, making it ideal for infrastructure and safety-critical industries.
Key Features
Miniaturized for portable and embedded applications
Response time < 0.1s
Standard RS485 (MODBUS) communication
Class I laser (eye-safe)
Compact design with low power demand (≤230 mA at 12V DC)
Ideal for remote sensing in open or confined environments
Technical Specifications
Power Supply: 12V ±0.5V DC
Current Consumption: ≤230 mA
Response Time: < 0.1 seconds
Laser Class: Class I (eye-safe)
Communication Protocol: RS485 (MODBUS)
Detection Gases & Ranges
CO: Range 0–50,000 ppm·m, Min. detection: 500 ppm
NH₃: Range 0–50,000 ppm·m, Min. detection: 500 ppm
CH₄: Range 0–50,000 ppm·m, Min. detection: 500 ppm
C₂H₂: Range 0–50,000 ppm·m, Min. detection: 5000 ppm
C₂H₄: Range 0–50,000 ppm·m, Min. detection: 5000 ppm
C₃H₈: Range 0–50,000 ppm·m, Min. detection: 5000 ppm
Laser Power Consumption: ≤10–15 mW depending on gas type
Applications
Urban gas pipe monitoring and LNG stations
Offshore and mining platforms
Municipal gas pressure regulation systems
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The Remote Laser Telemetry Module applies TDLAS (Tunable Diode Laser Absorption Spectroscopy) to enable non-contact, high-precision measurement of flammable, toxic, or explosive gases over long distances. With its compact build and strong remote sensing performance, it can identify gases at distances of up to 200 meters, making it ideal for robotic inspection, airborne sensing, and harsh industrial environments.
Key Features
Real-time non-contact remote gas measurement
Detects gases from 0–150 or 0–200 meters away
High precision for explosive or flammable gases
Compatible with RS485 (MODBUS) protocol
Eye-safe Class I laser
Lightweight and portable
Supports multiple gas detection with fast response
Technical Specifications
Principle: TDLAS
Detectable Gases: CH₄ (standard); CO, NH₃, C₂H₄ (customizable)
Power Supply: 12V ±0.5V DC
Current Consumption: ≤230 mA
Response Time: < 0.1 seconds
Communication: RS485 (MODBUS)
Laser Grade: Class I (eye-safe)
Detection Range: 0–50,000 ppm·m
Detection Distance: 0–150 m / 0–200 m
Sensitivity: 5 ppm·m
Laser Power Consumption: ≤15 mW
Applications
Petroleum and petrochemical monitoring
Chemical and natural gas industry
Mining operations and power plants
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Designed for home and commercial use, this compact sensor leverages TDLAS (Tunable Diode Laser Absorption Spectroscopy) for high-precision natural gas leak detection. It combines fast response with autonomous alarm logic, real-time SMS monitoring, and NB-IoT/Wi-Fi connectivity. The sensor provides audible and visual alerts and can trigger safety mechanisms like gas valve shutoff—making it ideal for high-risk environments like kitchens, schools, and markets.
Key Features
Accurate detection of CH₄ (methane)
Real-time audible/visual alarms (70–120 dB @ 1m)
LED status display: normal, fault, alarm
Small, light, and durable (10-year sensor life)
Built-in NB-IoT/Wi-Fi module for SMS/mobile app alerts
Interference-free sensing with autonomous decision-making
Technical Specifications
Detection Principle: TDLAS
Target Gas: CH₄ (methane)
Voltage: 220V AC
Measurement Range: 0–100% LEL
Alarm Threshold: 6% LEL
Status Display: LED (normal/fault/alarm)
Alarm Sound Pressure: 70–120 dB at 1 meter
Sensor Lifetime: 10 years
Operating Environment:
– Temperature: -10°C to 50°C
– Humidity: 0 to 99% RH
Communication Mode: NB-IoT / Wi-Fi
Applications
Family kitchens and catering facilities
Schools, business centers, and shared buildings
Market stalls, small industry, and utility rooms
Modules Industry comparison
