Portable Photosynthesis Fluorescence Measurement System High Accuracy Photosynthetic Rate Tester Chlorophyll Fluorometer

• Portable photosynthesis and chlorophyll fluorescence analyzer with upgraded performance and technical design.
• Simultaneously measures photosynthesis and chlorophyll fluorescence for matter and energy research of plants.
• Measures core photosynthetic indicators including Pn, Tr, Gs and intercellular CO₂ concentration.
• Captures comprehensive chlorophyll fluorescence parameters such as Fv/Fm, Vj, Mo and PIABS.
• Supports automatic generation of photosynthetic response curves and OJIP transient fluorescence curves.
• Suitable for plant stress physiology, soil respiration and fruit respiration research.
• Widely used in agriculture, forestry breeding, ecological survey, environmental remediation and agrometeorology.
• Equipped with a high-precision NDIR CO₂ sensor with optional measuring range up to 3000 ppm.
• Built-in silicon photocell PAR sensor for accurate photosynthetic photon flux detection.
• High-accuracy temperature and capacitive humidity sensors for stable environmental monitoring.
• Micro electronic flow meter with ±1% error for precise gas flow control.
• LED light control module with adjustable light intensity up to 3500 μmol m⁻² s⁻¹.

The portable photosynthesis-fluorescence analyzer is the culmination of over a decade of research, development and manufacturing experience, representing a comprehensive upgrade in both performance and technical design. It enables the simultaneous observation and study of plant photosynthesis from the perspectives of both matter and energy.

Distinguished by its exceptional measurement precision, user-friendly design and intuitive visual interface, this instrument stands among the top-tier photosynthesis analyzers produced domestically. In addition to standard photosynthetic measurements — such as photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO₂ concentration — the device captures a range of chlorophyll fluorescence parameters, including Fv, Fv/Fm, Vj, Mo, PIABS, Area and tFm. It also features advanced analytical capabilities such as the generation of photosynthetic response curves and OJIP transient curves.

This instrument is well suited for research in areas including photosynthesis, chlorophyll fluorescence kinetics, stress physiology, soil respiration, and the respiration of fruits and other produce. It has broad applications in the breeding of new agricultural and forestry varieties, the refinement of cultivation practices, ecological and environmental surveys, pollution remediation, the development and utilization of clean energy, landscape gardening, agrometeorological observation and soil restoration.

Inlet/outlet CO₂ concentration, inlet/outlet humidity, temperature, flow rate, leaf temperature, PAR (light intensity) and atmospheric pressure; fluorescence parameters including Fo, Fj, Fi, Fp (Fm), tFm and Area.

Photosynthetic parameters: photosynthetic rate, transpiration rate, stomatal conductance, intercellular CO₂ concentration, instantaneous water-use efficiency, intrinsic water-use efficiency, CO₂ differential, RH differential, CO₂ resistance, vapor pressure deficit (VPD), boundary layer conductance, boundary layer resistance, mesophyll conductance, maximum Rubisco carboxylation efficiency, maximum electron transport rate, CO₂ compensation point and CO₂ saturation point.

Fluorescence parameters: photochemical efficiency parameters (Fv, Fv/Fm, Vt, Vj, Mo, Sm, Ss); quantum yields or energy distribution ratios (φPo, ψo, φEo, φDo); performance indices (PIABS, PICS) and other related fluorescence parameters.

Automatic control of flow rate and light intensity; control of measurement duration; selection between open and closed gas-circuit modes; manual/automatic measurement modes; control of actinic light intensity; automatic calibration.

Photosynthesis curves (photosynthesis vs. light intensity, CO₂, humidity or temperature); rapid fluorescence kinetics curves (OJIP curves).

Real-time display of parameters, measured values, calculated values and system information; bilingual support (Chinese/English); intuitive operational guidance; pump pressure alarm for detecting blockages in the gas circuit.

User-performable firmware upgrades; portable (no-installation-required) data transmission software.

Built-in rechargeable lithium battery with low-voltage alarm.

Photosynthesis module; fluorescence module; photosynthesis curve module; CO₂ measurement module.

Compatible with chambers for plant communities, soil respiration, fruit respiration, seed respiration, algal fluorescence and clustered leaves.