Designed for Measurement Integrity™
Measure NEE.
Measure Reco.
Calculate GPP.
All at the Same Location.
Ecosystems continuously exchange gases with the atmosphere through complex and dynamic processes.
From soil respiration and canopy photosynthesis to carbon, nitrogen, and isotope cycling, researchers require not only more data, but more reliable data.
The PRI-8600 Automated Ecosystem Gas Exchange System is designed to support long-term, continuous ecosystem gas exchange measurements, providing high-quality datasets with improved reliability, interpretability, and comparability across time and space.
Supported Measurements
Carbon Fluxes
CO₂, CH₄
Nitrogen Fluxes
N₂O, NO, NH₃
Stable Isotopes
δ¹³C, δ¹⁵N, δ¹⁸O
Additional Trace Gases
COS, H₂O, and other gases supported by compatible analyzers
Four Challenges.
Four Innovations.
Long-term automated ecosystem gas exchange measurements face four fundamental challenges.
PRI-8600 addresses these challenges through four core innovations, enabling researchers to obtain higher-quality data, more representative measurements, more reliable scientific conclusions, and greater long-term operational reliability.
Better Data.
Dual-Circulation Architecture™
In conventional multiplexer systems, analyzers often wait for the next chamber to establish a stable circulation state before measurements can begin.
This transition period reduces analyzer utilization and shortens effective measurement time.
PRI-8600D features a Dual-Circulation Architecture™ consisting of two independent circulation systems operating alternately.
While one chamber is being measured, the next chamber is already pre-circulated and stabilized. Upon completion of the measurement cycle, the system switches immediately without requiring additional analyzer stabilization time.
Key Benefits
✓ Increased analyzer utilization
✓ Reduced overall measurement cycle time
✓ Extended effective measurement periods
✓ Improved performance for low-flux ecosystems
✓ Reduced disturbance during chamber closure
✓ Enhanced long-term reliability through alternating pump operation
Better Measurements.
Chamber Integrity Design
High-quality flux measurements depend not only on analyzer performance but also on chamber design.
PRI-ECO chambers are engineered to minimize measurement disturbance and improve data representativeness through a series of integrated design features.
Dynamic Pressure Equilibrium Technology
Reduces pressure disturbances generated during chamber opening and closing.
Helps minimize system-induced impacts on soil-atmosphere gas exchange processes.
Distributed Spatial Sampling Technology
Improves gas mixing uniformity within the chamber through distributed multi-layer sampling.
Enhances concentration representativeness and measurement stability.
Cylindrical Chamber Architecture
Promotes a more uniform and stable gas diffusion field.
Reduces boundary effects on concentration distribution within the chamber.
Integrated Electronics Compartment with Water-Resistant Design
Integrates motion control, communications, and sensor expansion functions into a dedicated electronics compartment.
Combined with an upward-opening chamber design, it helps reduce the impact of rainfall, snowmelt, and surface water, improving long-term reliability and environmental adaptability.
High-Transmission and Low-Shading Design (Transparent Chamber)
Minimizes the influence of the chamber structure on the natural light environment.
Improves the consistency between chamber measurements and natural field conditions.
Better Science.
Co-Located Dual-Mode Chamber System™
Gross Primary Productivity (GPP) is typically derived from Net Ecosystem Exchange (NEE) and Ecosystem Respiration (Reco).
In conventional approaches, these measurements are often collected at different locations.
Spatial heterogeneity in vegetation, root distribution, and soil properties can introduce significant uncertainty into GPP estimation.
The 8600-2012D employs a Co-Located Dual-Mode Chamber System™ in which a transparent chamber and an opaque chamber are installed on the same measurement base and operated automatically in sequence.
Transparent Mode
Measures:
NEE
Net Ecosystem Exchange
↓
Opaque Mode
Measures:
Reco
Ecosystem Respiration
↓
Automatic Calculation
GPP
Gross Primary Productivity
Scientific Advantages
✓ Co-located measurements
✓ Reduced spatial heterogeneity errors
✓ Reduced temporal mismatch errors
✓ Improved GPP estimation reliability
✓ Better suited for long-term ecosystem carbon cycle studies
One Platform.
Multiple Observation Modes.
PRI-8600D supports multiple automated chamber configurations to meet diverse research requirements.
8600-2012
Automated Soil Respiration Chamber
Designed for:
Reco
Ecosystem Respiration Measurements
Core Technologies
8600-2012C
Automated Transparent Chamber
Designed for:
NEE
Net Ecosystem Exchange Measurements
Core Technologies
8600-2012D
Co-Located Dual-Mode Gas Exchange System
Designed for:
NEE + Reco + GPP
Core Technologies
PRI-8600D
Intelligent Dual-Circulation Multiplexer
The central control platform of the entire measurement system.
Responsible for:
Core Capabilities
Dual-Circulation Architecture™
Two independent circulation systems operate alternately to maximize system efficiency and measurement capacity.
Three-Channel Automatic Calibration System
Supports long-term automated calibration.
Particularly suitable for:
A single cable simultaneously provides:
System Features
✓ Supports up to 32 automated chambers
✓ Custom cable lengths available
✓ Pump displacement upgrade
✓ Three-channel automatic calibration
✓ Wi-Fi configuration and access
✓ Automatic data upload
✓ Remote diagnostics
✓ RS-232 / RS-485 communication interfaces
✓ Dual RJ45 Ethernet ports
✓ Third-party analyzer compatibility
Compatible Analyzer Platforms
PRI-ECO Plus™
Enhanced Protection Version
Guardian™ Protection Architecture
Exclusive to Plus Versions
In long-term unattended ecosystem monitoring systems, the greatest risk is often not measurement failure, but liquid water intrusion into the analyzer.
For systems connected to stable isotope analyzers, high-precision greenhouse gas analyzers, and other high-value analytical instruments, analyzer protection is just as important as data continuity.
PRI-ECO Plus™ incorporates the Guardian™ Protection Architecture, providing multiple layers of active protection against liquid water intrusion.
First Layer Protection
Chamber-Level Protection
Reduces the risk of liquid water entering the sampling lines at the source.
Second Layer Protection
Multiplexer-Level Protection
Built-in liquid water detection continuously monitors gas path conditions.
When abnormal conditions are detected, the system automatically:
Third Layer Protection
Analyzer-Level Protection
Provides the final protection barrier immediately before the analyzer inlet.
Helps reduce the risk of liquid water reaching the analyzer.
Recommended Applications for Plus Versions
✓ Long-term unattended monitoring
✓ High-humidity environments
✓ High-rainfall regions
✓ Snow and freeze-thaw environments
✓ Lakes and reservoirs
✓ Rivers and estuaries
✓ Wetlands and tidal marshes
✓ Mangrove and blue carbon ecosystems
✓ Long-term ecological monitoring networks
✓ Stable isotope analyzers
✓ High-value greenhouse gas analyzers
✓ Critical research projects requiring continuous operation
Standard vs Plus
Specifications
PRI-8600D Intelligent Dual-Circulation Multiplexer
8600-2012 Automated Soil Respiration Chamber
8600-2012C Automated Transparent Chamber
8600-2012D Co-Located Dual-Mode Gas Exchange System
Designed for Modern Ecosystem Research
Why PRI-8600D?
✓ Measure NEE, Reco, and GPP at the Same Location
✓ Dual-Circulation Architecture™
✓ Chamber Integrity Design
✓ Co-Located Dual-Mode Chamber System™
✓ Guardian™ Protection Architecture (Plus Version)
✓ Supports up to 32 Automated Chambers
✓ Three-Channel Automatic Calibration
✓ Compatible with CO₂, CH₄, N₂O and Stable Isotope Measurements
✓ Compatible with Third-Party Analyzer Platforms
✓ Designed for Modern Ecosystem Research
More Than a Multiplexer.
More Than a Chamber.
Designed for Measurement Integrity™
One Platform. Multiple Fluxes. Reliable Measurements.
Specifications subject to change without notice.
Measure NEE.
Measure Reco.
Calculate GPP.
All at the Same Location.
Ecosystems continuously exchange gases with the atmosphere through complex and dynamic processes.
From soil respiration and canopy photosynthesis to carbon, nitrogen, and isotope cycling, researchers require not only more data, but more reliable data.
The PRI-8600 Automated Ecosystem Gas Exchange System is designed to support long-term, continuous ecosystem gas exchange measurements, providing high-quality datasets with improved reliability, interpretability, and comparability across time and space.
Supported Measurements
Carbon Fluxes
CO₂, CH₄
Nitrogen Fluxes
N₂O, NO, NH₃
Stable Isotopes
δ¹³C, δ¹⁵N, δ¹⁸O
Additional Trace Gases
COS, H₂O, and other gases supported by compatible analyzers
Four Challenges.
Four Innovations.
Long-term automated ecosystem gas exchange measurements face four fundamental challenges.
PRI-8600 addresses these challenges through four core innovations, enabling researchers to obtain higher-quality data, more representative measurements, more reliable scientific conclusions, and greater long-term operational reliability.
Better Data.
Dual-Circulation Architecture™
In conventional multiplexer systems, analyzers often wait for the next chamber to establish a stable circulation state before measurements can begin.
This transition period reduces analyzer utilization and shortens effective measurement time.
PRI-8600D features a Dual-Circulation Architecture™ consisting of two independent circulation systems operating alternately.
While one chamber is being measured, the next chamber is already pre-circulated and stabilized. Upon completion of the measurement cycle, the system switches immediately without requiring additional analyzer stabilization time.
Key Benefits
✓ Increased analyzer utilization
✓ Reduced overall measurement cycle time
✓ Extended effective measurement periods
✓ Improved performance for low-flux ecosystems
✓ Reduced disturbance during chamber closure
✓ Enhanced long-term reliability through alternating pump operation
Better Measurements.
Chamber Integrity Design
High-quality flux measurements depend not only on analyzer performance but also on chamber design.
PRI-ECO chambers are engineered to minimize measurement disturbance and improve data representativeness through a series of integrated design features.
Dynamic Pressure Equilibrium Technology
Reduces pressure disturbances generated during chamber opening and closing.
Helps minimize system-induced impacts on soil-atmosphere gas exchange processes.
Distributed Spatial Sampling Technology
Improves gas mixing uniformity within the chamber through distributed multi-layer sampling.
Enhances concentration representativeness and measurement stability.
Cylindrical Chamber Architecture
Promotes a more uniform and stable gas diffusion field.
Reduces boundary effects on concentration distribution within the chamber.
Integrated Electronics Compartment with Water-Resistant Design
Integrates motion control, communications, and sensor expansion functions into a dedicated electronics compartment.
Combined with an upward-opening chamber design, it helps reduce the impact of rainfall, snowmelt, and surface water, improving long-term reliability and environmental adaptability.
High-Transmission and Low-Shading Design (Transparent Chamber)
Minimizes the influence of the chamber structure on the natural light environment.
Improves the consistency between chamber measurements and natural field conditions.
Better Science.
Co-Located Dual-Mode Chamber System™
Gross Primary Productivity (GPP) is typically derived from Net Ecosystem Exchange (NEE) and Ecosystem Respiration (Reco).
In conventional approaches, these measurements are often collected at different locations.
Spatial heterogeneity in vegetation, root distribution, and soil properties can introduce significant uncertainty into GPP estimation.
The 8600-2012D employs a Co-Located Dual-Mode Chamber System™ in which a transparent chamber and an opaque chamber are installed on the same measurement base and operated automatically in sequence.
Transparent Mode
Measures:
NEE
Net Ecosystem Exchange
↓
Opaque Mode
Measures:
Reco
Ecosystem Respiration
↓
Automatic Calculation
GPP
Gross Primary Productivity
Scientific Advantages
✓ Co-located measurements
✓ Reduced spatial heterogeneity errors
✓ Reduced temporal mismatch errors
✓ Improved GPP estimation reliability
✓ Better suited for long-term ecosystem carbon cycle studies
One Platform.
Multiple Observation Modes.
PRI-8600D supports multiple automated chamber configurations to meet diverse research requirements.
8600-2012
Automated Soil Respiration Chamber
Designed for:
Reco
Ecosystem Respiration Measurements
Core Technologies
- Dynamic Pressure Equilibrium Technology
- Progressive Multi-Layer Sampling Technology
- Cylindrical Chamber Architecture
- Multifunction Support Structure
- Ecosystem Sensor Expansion Capability
- Long-Term Fixed Deployment
- Optional Plus Version Available
8600-2012C
Automated Transparent Chamber
Designed for:
NEE
Net Ecosystem Exchange Measurements
Core Technologies
- Dynamic Pressure Equilibrium Technology
- Progressive Multi-Layer Sampling Technology
- Cylindrical Chamber Architecture
- High-Transmission and Low-Shading Design
- Multifunction Support Structure
- Ecosystem Sensor Expansion Capability
- Long-Term Fixed Deployment
- Optional Plus Version Available
8600-2012D
Co-Located Dual-Mode Gas Exchange System
Designed for:
NEE + Reco + GPP
Core Technologies
- Co-Located Dual-Mode Chamber System™
- Dynamic Pressure Equilibrium Technology
- Progressive Multi-Layer Sampling Technology
- Cylindrical Chamber Architecture
- Co-located Transparent and Opaque Chambers
- Automatic Alternating Operation
- Automatic GPP Calculation
- Multifunction Support Structure
- Ecosystem Sensor Expansion Capability
- Optional Plus Version Available
PRI-8600D
Intelligent Dual-Circulation Multiplexer
The central control platform of the entire measurement system.
Responsible for:
- Automated chamber control
- Gas path switching
- Automatic calibration
- Data communication
- Analyzer integration
- Remote management and diagnostics
Core Capabilities
Dual-Circulation Architecture™
Two independent circulation systems operate alternately to maximize system efficiency and measurement capacity.
Three-Channel Automatic Calibration System
Supports long-term automated calibration.
Particularly suitable for:
- Greenhouse gas analyzers
- Stable isotope analyzers
- High-precision gas analyzers
A single cable simultaneously provides:
- Gas transport
- Power supply
- Data communication
System Features
✓ Supports up to 32 automated chambers
✓ Custom cable lengths available
✓ Pump displacement upgrade
✓ Three-channel automatic calibration
✓ Wi-Fi configuration and access
✓ Automatic data upload
✓ Remote diagnostics
✓ RS-232 / RS-485 communication interfaces
✓ Dual RJ45 Ethernet ports
✓ Third-party analyzer compatibility
Compatible Analyzer Platforms
- PRI-ECO
- LI-COR
- Picarro
- Aeris
- Aerodyne
- Los Gatos Research (LGR)
- Other third-party analyzers
PRI-ECO Plus™
Enhanced Protection Version
Guardian™ Protection Architecture
Exclusive to Plus Versions
In long-term unattended ecosystem monitoring systems, the greatest risk is often not measurement failure, but liquid water intrusion into the analyzer.
For systems connected to stable isotope analyzers, high-precision greenhouse gas analyzers, and other high-value analytical instruments, analyzer protection is just as important as data continuity.
PRI-ECO Plus™ incorporates the Guardian™ Protection Architecture, providing multiple layers of active protection against liquid water intrusion.
First Layer Protection
Chamber-Level Protection
Reduces the risk of liquid water entering the sampling lines at the source.
Second Layer Protection
Multiplexer-Level Protection
Built-in liquid water detection continuously monitors gas path conditions.
When abnormal conditions are detected, the system automatically:
- Isolates the affected channel
- Switches to the next measurement channel
- Records operational events
- Sends remote alerts
Third Layer Protection
Analyzer-Level Protection
Provides the final protection barrier immediately before the analyzer inlet.
Helps reduce the risk of liquid water reaching the analyzer.
Recommended Applications for Plus Versions
✓ Long-term unattended monitoring
✓ High-humidity environments
✓ High-rainfall regions
✓ Snow and freeze-thaw environments
✓ Lakes and reservoirs
✓ Rivers and estuaries
✓ Wetlands and tidal marshes
✓ Mangrove and blue carbon ecosystems
✓ Long-term ecological monitoring networks
✓ Stable isotope analyzers
✓ High-value greenhouse gas analyzers
✓ Critical research projects requiring continuous operation
Standard vs Plus
| Feature | Standard | Plus |
| Dual-Circulation Architecture™ | ✓ | ✓ |
| Co-Located Dual-Mode Chamber System™ | ✓ | ✓ |
| Chamber Integrity Design | ✓ | ✓ |
| Three-Channel Automatic Calibration | ✓ | ✓ |
| Integrated Gas-and-Power Cabling | ✓ | ✓ |
| Up to 32 Chambers | ✓ | ✓ |
| Liquid Water Detection | — | ✓ |
| Remote Alert Notifications | — | ✓ |
| Analyzer End Protection | — | ✓ |
| Guardian™ Protection Architecture | — | ✓ |
Specifications
PRI-8600D Intelligent Dual-Circulation Multiplexer
| Parameter | Specification |
| Maximum Chambers | 32 |
| Gas Path Architecture | Dual-Circulation Architecture™ |
| Circulation System | Dual Independent Circulation Loops |
| Automatic Calibration | 3 Standard Gas Channels |
| Pumps | Dual Diaphragm Pumps |
| Communication Interfaces | 4 × RS-232 |
| Communication Interfaces | 2 × RS-485 / RS-232 |
| Network Ports | 2 × RJ45 |
| USB Ports | 3 × USB |
| Wireless Communication | Wi-Fi |
| GPS / BeiDou | Supported |
| Data Storage | 256 GB |
| Protection Rating | IP55 |
| Operating Temperature | -20 to +45 °C |
| Power Input | 24 VDC |
8600-2012 Automated Soil Respiration Chamber
| Parameter | Specification |
| Measurement Mode | Reco |
| Measurement Area | 232.4 cm² |
| Chamber Volume | 3463 cm³ |
| Chamber Design | Cylindrical |
| Pressure Control | Dynamic Pressure Equilibrium |
| Sampling Method | Distributed Equidistant Cross Sampling (DECS) |
| Installation | Long-Term Fixed Deployment |
8600-2012C Automated Transparent Chamber
| Parameter | Specification |
| Measurement Mode | NEE |
| Measurement Area | 232.4 cm² |
| Chamber Volume | 3463 cm³ |
| Chamber Design | Cylindrical |
| Pressure Control | Dynamic Pressure Equilibrium |
| Sampling Method | Distributed Equidistant Cross Sampling (DECS) |
| Transparent Material | High-Transmission Material |
| Installation | Long-Term Fixed Deployment |
8600-2012D Co-Located Dual-Mode Gas Exchange System
| Parameter | Specification |
| Measurement Mode | NEE + Reco + GPP |
| System Configuration | Transparent Chamber + Opaque Chamber |
| Installation | Co-Located |
| Measurement Area | 232.4 cm² + 232.4 cm² |
| Chamber Volume | 3463 cm³ + 3463 cm³ |
| Operation Mode | Transparent First, Opaque Second |
| GPP Calculation | Automatic |
| Pressure Control | Dynamic Pressure Equilibrium |
| Sampling Method | Distributed Equidistant Cross Sampling (DECS) |
Designed for Modern Ecosystem Research
- Forest Ecosystems
- Grassland Ecosystems
- Agricultural Ecosystems
- Wetland Ecosystems
- Permafrost Ecosystems
- Blue Carbon Ecosystems
- Stable Isotope Ecology
Why PRI-8600D?
✓ Measure NEE, Reco, and GPP at the Same Location
✓ Dual-Circulation Architecture™
✓ Chamber Integrity Design
✓ Co-Located Dual-Mode Chamber System™
✓ Guardian™ Protection Architecture (Plus Version)
✓ Supports up to 32 Automated Chambers
✓ Three-Channel Automatic Calibration
✓ Compatible with CO₂, CH₄, N₂O and Stable Isotope Measurements
✓ Compatible with Third-Party Analyzer Platforms
✓ Designed for Modern Ecosystem Research
More Than a Multiplexer.
More Than a Chamber.
Designed for Measurement Integrity™
One Platform. Multiple Fluxes. Reliable Measurements.
Specifications subject to change without notice.
PRI-ECO
Mastering Precision. Sensing Nature.