SKU: SENS-0506
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Renke RS-GH-N01-AL Photosynthetically Active Radiation (PAR) Sensor - 0-2500μmol/㎡·s, RS485 Modbus, IP67 Aluminum Shell

₹12,539.00 (Inclusive of all taxes)
Out of Stock

The Renke RS-GH-N01-AL is a professional-grade Photosynthetically Active Radiation (PAR) sensor designed for agricultural and meteorological research. It provides precise measurement of light intensity within the 400-700nm spectrum via a standard RS485 Modbus-RTU interface, compatible with industrial PLCs, data loggers, and custom monitoring systems operating on a wide 10-30V DC supply.

Features

  • Measures Photosynthetically Active Radiation (PAR) from 0 to 2500 μmol/㎡·s with ±2% accuracy at 1000 μmol/㎡·s.
  • Standard RS485 Modbus-RTU communication protocol for direct integration with PLCs, SCADA, and data acquisition systems.
  • Features a high-quality cosine corrector for accurate angular response and an IP67-rated all-aluminum housing for field durability.
  • Wide operating voltage range of 10-30V DC with low power consumption of 0.06W.
  • Includes a built-in level meter and adjustment handwheel for precise on-site installation and calibration.

Out of stock

Description

The Renke RS-GH-N01-AL sensor operates on a photoelectric sensing principle, generating a voltage signal proportional to the intensity of incident radiation within the critical 400-700nm spectral band for photosynthesis. Its high-precision sensing element and specialized dust cover ensure stable, long-term performance by minimizing interference from environmental factors.

Engineered for field deployment, the sensor’s robust IP67 aluminum housing protects internal components from moisture and dust. The integrated cosine corrector ensures measurement accuracy follows Lambert’s cosine law, critical for capturing light from all angles. The standard Modbus-RTU protocol simplifies wiring and allows for seamless reading of real-time PAR values directly into control and monitoring networks.

Key Features

  • Precision Spectral Response: Optimized for the 400-700nm PAR spectrum with high absorption and excellent signal stability.
  • Field-Ready Construction: IP67-rated all-aluminum shell provides robust protection against harsh environmental conditions.
  • Accurate Cosine Response: High-quality cosine corrector ensures measurements adhere to the standard cosine law for incident light angles.
  • Industrial Communication: Utilizes the standard Modbus-RTU protocol over RS485 for reliable, long-distance data transmission.
  • Easy Installation & Calibration: Built-in bubble level and adjustment handwheel enable quick, precise leveling and alignment in the field.
  • Low Power Operation: Consumes only 0.06W, making it suitable for solar-powered or remote monitoring stations.
  • Wide Supply Voltage: Accepts 10-30V DC, offering flexibility for various system power designs.
  • High Stability: Features ≤±2% annual stability for reliable, long-term data collection without frequent recalibration.

Applications

  • Precision Agriculture & Greenhouse Monitoring: Optimizing plant growth by measuring PAR levels for supplemental lighting control and crop yield studies.
  • Meteorological & Climate Research Stations: Integrating into weather stations to monitor solar radiation components critical for evapotranspiration and climate models.
  • Ecological & Environmental Research: Assessing light availability in forest canopies, aquatic environments, and ecosystems for biodiversity studies.
  • Hydroponic & Vertical Farming Systems: Providing real-time PAR data for automated LED lighting systems to maintain optimal photosynthetic photon flux density (PPFD).
  • Air Pollution & Atmospheric Science: Studying the impact of aerosols and particulates on the attenuation of photosynthetically active radiation.

Technical Specifications

Model NumberRS-GH-N01-AL
Measurement Range0 to 2500 μmol/㎡·s
Spectral Response400 nm to 700 nm
Accuracy±2% (at 1000 μmol/㎡·s, 25°C, 60% RH)
Resolution1 μmol/㎡·s
Response Time0.1 s
Linearity≤±1%
Annual Stability≤±2%
Operating Temperature-30°C to +75°C
Supply Voltage10V to 30V DC
Power Consumption0.06 W
Communication ProtocolRS485 Modbus-RTU
Housing MaterialAll-Aluminum
Ingress Protection (IP)IP67
InterfaceRS485

Frequently Asked Questions

What is the operating voltage range for the RS-GH-N01-AL PAR sensor?

The sensor operates on a wide DC voltage range of 10 to 30 volts. This flexibility makes it compatible with various field power sources, including 12V or 24V industrial systems and regulated solar power supplies, while maintaining its low 0.06W power consumption.

How do I communicate with this sensor and read the PAR value?

The sensor uses a standard RS485 physical interface with the Modbus-RTU protocol. You connect the A/B data lines to an RS485 transceiver on your PLC, data logger, or microcontroller. Then, you can query the sensor's holding registers using the Modbus protocol to read the current photosynthetic effective radiation value directly.

What does the IP67 rating and aluminum housing mean for field use?

The IP67 rating guarantees the sensor is dust-tight and can withstand temporary immersion in water up to 1 meter for 30 minutes. Combined with the robust all-aluminum shell, this provides excellent protection against rain, humidity, dust, and physical impacts, ensuring reliable long-term operation in outdoor agricultural and meteorological environments.

How do I ensure accurate measurements during installation?

For accurate cosine-corrected measurements, the sensor must be installed level. Use the integrated bubble level and adjustment handwheel to precisely level the sensor on its mounting bracket. The sensor should be positioned in an open area, free from shadows or reflections that could affect the incident light reading.

What is the spectral range, and why is it limited to 400-700nm?

The sensor's spectral response is strictly limited to 400-700 nanometers because this range defines Photosynthetically Active Radiation (PAR), the portion of the light spectrum used by plants for photosynthesis. It does not measure UV, infrared, or total solar radiation, making it a specialized tool for agronomy and plant science research.

Package Includes

  • 1 x Renke RS-GH-N01-AL Photosynthetically Active Radiation (PAR) Sensor

Additional Information

Weight 0.307 kg
Dimensions 21 × 12 × 12 cm