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Beijing Pure-Science Technology Co., Ltd.

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BrandPri-eco
OriginBeijing, China
Manufacturer TypeManufacturer
Country of OriginDomestic (China)
ModelPRI-8610
Instrument TypeMulti-parameter Portable Soil Respiration Analyzer
CO₂ Range0–2000 ppm (customizable)
H₂O Range0–6% v/v
CO₂ Accuracy±2% of reading (±1.5% after calibration)
H₂O Accuracy±2% of reading
CO₂ Zero Stability±2% over >12 months
Sample Flow Rate1 L/min (adjustable)
CO₂ Repeatability @ Zero±0.3%
CO₂ Repeatability @ Span±1.5%
Operating Pressure800–1150 mbar
Humidity Range<99% RH, non-condensing
CO₂ Zero Drift (Constant Temp)±2%/year
CO₂ Zero Drift (Ambient Temp Change)±0.03%/°C
Power Supply12 V Li-ion battery
Power Consumption<10 W (steady state)
T₉₀ Response Time10 s (configurable)
Battery Life8 hours per charge
Weight (Analyzer Unit)8 kg
Operating Temperature−20 to +45 °C
Dimensions (Analyzer)475 × 372 × 192 mm
Soil ChamberDiameter 220 mm, Height 120 mm, Volume 3718 cm³, Base Area 314 cm²
Air Pressure Sensor Range150–1150 mbar
Air Pressure Accuracy±2 mbar
Soil Temperature Range−20 to +85 °C
Soil Temperature Accuracy±0.2 °C
Soil Moisture Range0–100%
Soil Moisture Accuracy±3%
Dynamic Pressure CompensationYes (Patent ZL201420354126.4)
Integrated TabletYes
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BrandPri-eco
OriginBeijing, China
Manufacturer TypeManufacturer
Country of OriginChina
ModelPRI-8620
Instrument TypeMulti-gas Soil Respiration Analyzer
Power Consumption (Steady State)< 28 W
Power Supply12 V Lithium Battery
Dimensions475 × 372 × 192 mm
CO₂ Precision (5 min)0.6 ppm
CH₄ Precision (5 min)0.2 ppb
H₂O Precision (5 min)10 ppm
CO₂ Range0–2000 ppm
CH₄ Range0–500 ppm
H₂O Range0–3 %
Sample Flow Rate800 mL/min (adjustable)
Ambient Humidity Tolerance< 99 % RH (non-condensing)
Air Pressure Range (Chamber)150–1150 mbar
Air Pressure Accuracy±2 mbar
Chamber Diameter220 mm
Chamber Height120 mm
Chamber Volume3718 cm³
Soil Temperature Range−20 to +85 °C
Soil Temperature Accuracy±0.2 °C
Soil Moisture Range0–100 %
Soil Moisture Accuracy±3 %
Soil Collar Area314 cm²
Chamber Weight1.8 kg
System Weight13 kg
Dynamic Pressure CompensationYes (Patent No. ZL201420354126.4)
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BrandPRI-eco
OriginBeijing, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Country of OriginChina
ModelPRI-8160
Price RangeUSD 28,000 – 70,000
Chamber MaterialTransparent Aluminum Alloy / Opaque Acrylic
External Dimensions44 × 26 × 26 cm (L×W×H)
Chamber Diameter20 cm
Chamber Height13 cm (adjustable)
Measurement Volume4000 cm³ (customizable)
Measurement Area315 cm² (customizable)
Operating PrincipleDynamic Pressure-Balanced Flow-Through System
ActuationStepper Motor
Control UnitEmbedded Microcontroller
InterfaceAviation Connector
Remote OperationBluetooth/WiFi-enabled Mobile App (iOS/Android)
IP RatingIP65
Weight5.0 kg (including handle)
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BrandPri-eco
OriginBeijing, China
ManufacturerYes
Country of OriginChina
ModelPRI-8630
Instrument TypeMulti-Gas Soil Respiration Analyzer
Power Consumption (Steady State)<28 W
Power Supply12 V Rechargeable Lithium Battery
Dimensions475 × 372 × 192 mm
Weight (Analyzer Unit)13 kg
Soil Chamber Weight1.8 kg
Chamber Diameter220 mm
Chamber Height120 mm
Chamber Volume3718 cm³
Soil Collar Area314 cm²
CO₂ Accuracy (5 min)±0.04 ppm (0–3500 ppm)
N₂O Accuracy (5 min)±0.03 ppb (0–500 ppb)
H₂O Accuracy (5 min)±10 ppm (0–3 %v/v)
Sampling Rate1 Hz
Sample Flow Rate800 mL/min (adjustable)
Air Pressure Range150–1150 mbar
Air Pressure Accuracy±2 mbar
Soil Temperature Range−20 to +85 °C
Soil Temperature Accuracy±0.2 °C
Soil Moisture Range0–100 %
Soil Moisture Accuracy±3 %
Relative Humidity Tolerance<99 % RH (non-condensing)
Dynamic Pressure CompensationYes (Patent ZL201420354126.4)
Detection PrincipleMid-Infrared Laser Absorption Spectroscopy (MIRLAS)
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BrandPri-eco
OriginBeijing, China
Manufacturer TypeDirect Manufacturer
Product CategoryDomestic
ModelPRI-8635
Instrument TypeMulti-Parameter Soil Respiration Analyzer
Power Consumption (Steady State)< 28 W
Power Supply12 V Rechargeable Lithium Battery
Dimensions475 × 372 × 192 mm
Weight (Analyzer Unit)13 kg
Soil Chamber Weight1.8 kg
Soil Chamber Diameter × Height220 mm × 120 mm
Chamber Volume3718 cm³
Soil Collar Area314 cm²
CO Detection Limit (5-min avg)0.05 ppb
CO₂ Detection Limit (5-min avg)0.6 ppm
N₂O Detection Limit (5-min avg)0.05 ppb
H₂O Detection Limit (5-min avg)10 ppm
CO Range0–500 ppm
CO₂ Range0–2000 ppm
N₂O Range0–500 ppm
H₂O Range0–3 %v/v
Sample Flow Rate800 mL/min (adjustable)
Ambient Humidity Tolerance< 99 % RH (non-condensing)
Air Pressure Measurement Range150–1150 mbar
Air Pressure Accuracy±2 mbar
Soil Temperature Range−20 to +85 °C
Soil Temperature Accuracy±0.2 °C
Soil Moisture Range0–100 % volumetric
Soil Moisture Accuracy±3 %
Dynamic Pressure CompensationYes (Patent ZL201420354126.4)
Integrated Tablet PCYes
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BrandPri-eco
ModelWarden
OriginBeijing, China
Manufacturer TypeDirect Manufacturer
Instrument CategoryMultifunctional Soil Analyzer
Operating Temperature Range−25 to 50 °C
Power Supply6–15 VDC
Measurement PrincipleTrue Time-Domain Reflectometry (TureTDR®) at ~1.5 GHz
Sensor CompatibilityTDR-001 (moisture only), TDR-002 (moisture/temperature/conductivity), TDR-LMS/LP/LT (lab-grade mini sensors), TDR-020 (wireless IoT module)
Channel Capacity8 sensor channels per Warden node
Network TopologyWired daisy-chain up to 16 nodes
Data OutputRaw TDR waveforms, calibrated volumetric water content (θv), bulk electrical conductivity (σb), and temperature (T)
Accuracy (field sensors)θv ±2 % vol (±1 % vol with individual calibration), T ±0.5 °C (±0.3 °C with calibration), σb ±10 % (0–1 S/m)
Lab sensorshigher resolution and traceable calibration options available
Resolutionθv 0.1 % vol, T 0.1 °C, σb 1 mS/m
Probe Geometry (TDR-002)Dual 100 mm × 3 mm stainless steel rods, 5 cm diameter × 11 cm height sensing volume, PVC probe body (Ø20 mm, 15–150 cm customizable length)
Cable Length1.5–6.0 m (field), 1–2 m (lab)
ComplianceDesigned for long-term unattended operation in accordance with ISO 10390 (soil pH and EC measurement), ASTM D5084 (hydraulic conductivity correlation), and GLP-aligned data integrity workflows
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BrandPri-eco
ModelCanary
TypeMulti-parameter Soil Sensor Network System
OriginBeijing, China
ManufacturerPri-eco
Power Supply6–15 VDC
Operating Temperature Range−25 to +50 °C
Data Acquisition Channels8 per node
Sensor CompatibilityCanary-001 (moisture-only), Canary-002 (moisture + temp), Canary-003 (moisture + temp + EC)
Moisture Accuracy±3% vol (±<3% with site-specific calibration)
Temp Accuracy±0.4 °C
EC Accuracy±15% @ 0–1 S/m
Moisture Resolution0.1% vol
Temp Resolution0.1 °C
EC Resolution1 mS/m
Moisture Range0–70% vol
Temp Range−55 to +120 °C
EC Range0.000–1 S/m
ProbeDual 50 mm × 3 mm stainless steel rods
HousingPVC tube, Ø20 mm
Cable Length1.5–10 m
RF Frequency70 MHz
CommunicationWireless (modular RF or LoRaWAN-ready)
Cloud IntegrationYes
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BrandPri-eco
OriginBeijing, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Country of OriginChina
ModelPRI-8610U
Instrument CategoryMulti-Parameter Soil Respiration Analyzer
Dimensions400 mm (D) × 250 mm (H)
CO₂ Range0–2000 ppm
CO₂ Accuracy±50 ppm or ±5% of reading
H₂O Range0–6%
H₂O Accuracy±2% of reading
Air Pressure Range150–1150 mbar
Air Pressure Accuracy±2 mbar
Soil Temperature Range−20 to +85 °C
Soil Temperature Accuracy±0.2 °C
Soil Moisture Range0–100%
Soil Moisture Accuracy±3%
Respiration Chamber Volume3718 cm³
Chamber Base Area314 cm²
Chamber Dimensions220 mm (D) × 120 mm (H)
Battery12 V Li-ion
Operating Temperature−10 to +45 °C
Weight5.5 kg
Dynamic Pressure CompensationYes (Patent ZL201420354126.4)
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BrandPri-eco
OriginBeijing, China
Manufacturer TypeOEM Manufacturer
Country of OriginChina
ModelPRI-8600D
Instrument TypeMulti-Function Soil Respiration & Ecosystem Gas Exchange Analyzer
Channel Options8(9), 16(18), 24(27), 32(36) or customizable
Gas Path Length15–100 m (factory-configured per pump specification)
Standard Flow Rate4.0 L/min into measurement chambers
Operating Temperature−10 to 45 °C
Operating Pressure80–115 kPa
Relative Humidity Range<99% RH (non-condensing at 45 °C)
Calibration Channels3
Touchscreen ControlIntegrated tablet interface
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BrandPRI-eco
OriginBeijing, China
ManufacturerYes
Country of OriginChina
ModelPRI-8650
Instrument TypeMulti-point In-situ Soil Respiration Analyzer
Power Consumption12 W
Power Supply12 V DC
Dimensions (L×W×H)55 × 26 × 26 cm
CO₂ Measurement Range0–2000 ppm
CO₂ Accuracy±50 ppm or ±5% of reading
H₂O Vapor Range0–6%
H₂O Accuracy±2%
Air Temperature Range−40 to +85 °C
Air Temperature Accuracy±0.2 °C
Soil Temperature Range−40 to +85 °C
Soil Temperature Accuracy±0.2 °C
Soil Moisture Range0–100%
Soil Moisture Accuracy±3% (±2% after calibration)
Sampling Flow Rate0.5 mL/min at 760 Torr
Response Time (T90)2 s
Measurement Interval0.5 s
Operating Temperature−10 to +50 °C (extended range: −30 to +50 °C)
Sampling Temperature−20 to +50 °C
Node ScalabilityUnlimited
Weight (incl. solar panel)18 kg
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BrandPri-ECO
OriginBeijing, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Country of ManufactureChina
ModelCC-50
Chamber Dimensions50(L) × 50(W) × 40(H) cm
Net Weight~15 kg
Chamber Volume90.5 L (customizable)
Measurement Area0.1936 m² (customizable)
Optical Transmission93% (polycarbonate panel)
Light ControlRemovable aluminized foil overlay for dark-adapted measurements
Window ActuationMotorized linear actuators (top window: 90° rotation
side window45° rotation)
Sealing MechanismPrecision pneumatic-assisted compression seal
Internal MixingLow-turbulence axial fan with adjustable RPM
Structural MaterialAnodized aluminum frame + UV-stabilized optical-grade polycarbonate
Temperature Monitoring Range–40 °C to +85 °C
Temp. Sensor Accuracy±2% FS
Power Supply12 V DC / 50 W nominal
Control InterfaceIndustrial-grade PLC + 7-inch resistive touchscreen HMI
ComplianceDesigned for ISO 14064-3 field verification workflows and ASTM D6866–22 compatible δ¹³C flux partitioning protocols
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BrandPri-eco
OriginBeijing, China
Manufacturer TypeDirect Manufacturer
Country of OriginChina
ModelPRI-8640
Instrument TypeMulti-Component Soil Respiration Analyzer
Power Consumption (Steady State)< 50 W
Power Supply12 V Rechargeable Lithium Battery
Dimensions435 × 304 × 170 mm
Weight12 kg (Analyzer Unit)
CO₂ Precision (5 min)0.04 ppm
CH₄ Precision (5 min)0.2 ppb
N₂O Precision (5 min)0.03 ppb
H₂O Precision (5 min)10 ppm
Sample Flow Rate800 mL/min (adjustable)
Pressure Range (Chamber)350–1150 mbar
Pressure Accuracy±2 mbar
Chamber Diameter220 mm
Chamber Height120 mm
Chamber Volume3718 cm³
Soil Surface Area314 cm²
Temperature Range (Soil/Air Sensor)−55 to +125 °C
Temp. Accuracy±0.4 °C
Soil Moisture Range0–100%
Moisture Accuracy±3%
Relative Humidity Tolerance<99% RH (non-condensing)
Patented Dynamic Pressure CompensationYes (Patent No. ZL201420354126.4)
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BrandPri-eco
OriginBeijing, China
Manufacturer TypeManufacturer
Country of OriginChina
ModelPlover
Instrument TypeMulti-parameter Portable Soil Analyzer
Measurement PrincipleTrue Time-Domain Reflectometry (TureTDR®) at ~1.5 GHz
Sensor CompatibilityTDR-001 (moisture-only) or TDR-002 (moisture/temperature/conductivity)
Data Acquisition Channels1 channel
CalibrationField-deployable online calibration
Power SupplyRechargeable Li-ion battery (2500 mAh, 3.7 VDC)
Battery LifeUp to 3,000 measurements or 182 days in standby
Operating Temperature−25 °C to +50 °C
Wireless Communication2.4 GHz ISM band, up to 20 m range
Dimensions (Data Logger)1.9 cm × 7.0 cm × 12.5 cm
Weight (Data Logger)200.5 g
Moisture Accuracy±2% vol/vol (±1% vol/vol after site-specific calibration)
Temperature Accuracy±0.5 °C (±0.1 °C after calibration)
EC Accuracy±10% (0–1 S/m), improved with calibration
Moisture Resolution0.1% vol/vol
Temperature Resolution0.1 °C
EC Resolution1 mS/m
Moisture Range0–100% vol/vol
Temperature Range−25 °C to +50 °C
EC Range0.000–1 S/m
Probe ConfigurationDual stainless-steel rods (100 mm length, 3 mm diameter)
Sensing VolumeCylindrical zone ~5 cm diameter × 11 cm height around probe
Probe HousingPVC tube (2 cm diameter, 15–150 cm customizable length)
Cable Length Options1.5–6.0 m
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BrandRMF
OriginAustralia
ModelCP40II
Max Cone Index5600 kPa (at 75 kg load)
Max Measurable Depth750 mm
Resolution0.03 kg
Display20×16-character LED
Data Storage512 KB non-volatile flash memory (up to 2047 data points across 75 profiles)
Ultrasonic Depth Sensor Accuracy±2 mm
Operating Temperature−10 °C to +60 °C
CommunicationRS-232 serial interface, 9600 bps
BatteryRechargeable 3000 mAh Li-ion
Instrument Weight3.9 kg
Total System Weight (incl. case & accessories)9 kg
Dimensions (instrument only, no GPS module)560 × 1073 × 130 mm
Carrying Case Dimensions470 × 358 × 175 mm
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BrandPri-eco
OriginBeijing, China
ManufacturerYes
Country of OriginChina
ModelPRI-8300
Power Consumption100 W
Input Voltage110–220 VAC, 50–60 Hz
Dimensions (H×W×D)43.2 × 17.8 × 44.5 cm
Weight18 kg
CO₂ Measurement Range0–10% and 0–30% (selectable)
CO₂ Measurement Uncertainty< ±2% of reading
H₂O Measurement Range0–100% RH
Sampling Interval1 s
Response Time (10–90% / 90–10%)10 s
Number of Standard Sampling Depths6 channels
Semi-permeable Membrane MaterialPolypropylene
Membrane Wall Thickness1.55 mm
Inner Diameter5.5 mm
Burst Pressure≥116 psi
Internal Burst Pressure≥36 psi
Transmembrane Flow Rate1.4 mL/(min·cm²·bar) @ 23°C (isopropanol)
Saturation Pressure15.5 psi @ 23°C (isopropanol)
Oil & Grease Residue in Membrane≤500 ppm
Sampling Temperature Range−10 to +45°C (extendable to −30°C)
Sampling Flow Rate0.050 L/min at 760 Torr
Operating Pressure Range700–1000 Torr (40–133 kPa)
Calibration Channels3 (optional, customizable)
Sampling MethodDiffusive, membrane-based, closed-path stratified profiling
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BrandPri-eco
ModelPRI-8300 Plus
OriginBeijing, China
ManufacturerPri-eco
Power Consumption100 W
Input Voltage110–220 VAC, 50–60 Hz
Dimensions (H×W×D)43.2 × 17.8 × 44.5 cm
Weight18 kg
Gas AnalytesCO₂, CH₄, N₂O, H₂O
Measurement PrincipleTunable Diode Laser Absorption Spectroscopy (TDLAS) coupled with hydrophobic gas-permeable membrane diffusion
Sampling MethodMulti-depth closed-loop diffusion profiling
Standard Depth Channels6 (configurable)
Membrane MaterialPolypropylene
Membrane Wall Thickness1.55 mm
Inner Diameter5.5 mm
Burst Pressure≥116 psi
Intraluminal Burst Pressure≥36 psi
Permeation Rate1.4 mL/(min·cm²·bar) @ 23°C (isopropanol)
Saturation Pressure15.5 psi @ 23°C (isopropanol)
Sampling Temperature Range−10 to +45 °C (extendable to −30 °C)
Sample Flow Rate0.050 L/min at 760 Torr
Operating Pressure Range700–1000 Torr (40–133 kPa)
CO₂ Range0–10% vol
CH₄ Range0–1% vol
N₂O Range0–500 ppmv
H₂O Range0–7% vol
CO₂ Precision (1 s)±0.2 ppmv
CH₄ Precision (1 s)±1 ppbv
N₂O Precision (1 s)±0.2 ppbv
H₂O Precision (1 s)±50 ppmv
CO₂ Precision (5 min)±0.04 ppmv
CH₄ Precision (5 min)±0.2 ppbv
N₂O Precision (5 min)±0.03 ppbv
H₂O Precision (5 min)±10 ppmv
Calibration Options3-channel automated calibration module (optional, customizable)
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