Soil respiration is one of the largest and most significant carbon fluxes in terrestrial ecosystems. Due to soil heterogeneity, soil respiration is spatially variable. Increasing the number of soil flux monitoring sites and expanding the monitoring radius can help reduce uncertainty in soil respiration studies.
     The newly designed PRI-8600D multiplexer, featuring a dual circulation gas flow system, provides an effective solution for multicompartment and multiscale monitoring of soil flux and Net Ecosystem Exchange (NEE) research.
     The PRI-8600D multiplexer serves as the connection and control center, directing the flow of gas between long-term chambers and various gas analyzers. Its patented dual circulation configuration (ZL201810968150.X) divides the plumbing into two alternating groups. Additionally, built-in calibration channels enable the online calibration of gas analyzers.

• Two groups plumbing for dual circulation
• Build-in three channels for on-line calibration
• All-in-one gas and electricity cable assembly
• Up to 32 clear and opaque chambers in one box

PRI-8600D Multiplexer

Connection Capability: Up to 32 clear and opaque chambers, customization available
Calibration: Build-in three channels for on-line calibration
Plumbing: Two groups plumbing for dual circulation
Pump: Two diaphragm pumps with ~2 to 3 lpm flow rate to/ from chambers
Coverage Area: 15.0 m with one cable assembly, customization available

Barometric Pressure Sensor:
Measurement Range: 30 to 110 kPa
Sensor Accuracy: ±0.12 hPa from 95 to 105 kPa
Resolution: 0.16 Pa
Connectivity Ports: 4 x RS-232, 2 x RS-485/RS-232, 2 x RJ-45 Ethernet, 3 x USB-A, Wi-Fi
Weatherproof Rating: Tested to IEC IP55 standard

Operating Range:
Temperature: –20 to 45 °C
Humidity: 0 to 95% RH, non-condensing
User Data Storage: 200 GB total non-volatile
GPS / BDS: Accuracy 1 m CEP
Power Requirements: 24VDC, 15A (120 VAC and 240 VAC with optional power supply). 
Dimensions: 52.4 cm (L) × 42.8 cm (W) × 20.6 cm (H)
Weight: 7.7 kg

8600-2012 Opaque Long-Term Chamber

Designed for use with the PRI-8600D for long-term measurements.

Key Features

• Patented pressure vent minimizes soil disturbance and pressure perturbation
• Built-in sampling circular line with progressive multihole for uniform sampling
• All-in-one gas and electrical cable with additional protection and multi-connector

Specifications
Chamber Dimensions：220 mm (D) x 120 mm (H)
Chamber Volume：3750 cm³
Soil Area Exposed：315 cm²
Air temperature Range：-40 to +85 °C
Air temperature Pricesion：± 0.4 °C
Dimensions：440 mm (L) x 260 mm (W) x 260 mm (H)
Weight：7.5 kg

8600-2012C Clear Long-Term Chamber customization available

8600-5040 Clear Long-Term Chamber

Designed for use with the PRI-8600D for long-term net ecosystem exchange (NEE) research.

Key Features

• Patented pressure vent minimizes soil disturbance and pressure perturbation
• Built-in sampling circular line with progressive multihole for uniform sampling
• All-in-one gas and electrical cable assembly with additional protection and multi-connector

Specifications
Chamber Volume：90500 cm³
Soil Area Exposed：1936 cm²
Air temperature Range：-40 to +85 °C
Air temperature Pricesion：± 0.4 °C
Dimensions：50.0 cm （L) × 50.0 cm (W) × 40.0 cm (H)，customization available
Weight：20 kg

8600-201 Soil Temperature and Moisture Sensor     
                                                                                                      
Soil temperature Range：-40 to +85 °C
Soil temperature Pricesion：± 0.2 °C
Soil Moisture Range：0 to 100%
Soil Moisture Pricesion：± 3%



PRI-501 CO₂ H₂O analyzer

CO₂ Accuracy：± 2%
CO₂ Measurement Range：0 to 2000 ppm
H₂O Precision (Typical)：± 2%
H₂O Measurement Range：0 to 6 %
Sampling Temperature：-20 to 45 °C
Sampling Pressure：80 to 115 kPa
Sampling Humidity：0 to 99% RH, non-condensing
Gas flow: 1.5 L lpm
Communication: RS-232

Applications

Specifications subject to change without notice.

Manufacturer: PRI-ECO，China