SISCO PAR sensor features an aluminum alloy housing with IP67 protection for demanding environmental conditions. An integrated bubble level and adjustment handwheel simplify horizontal alignment during installation, while its low power consumption of 0.06 W helps reduce operating energy requirements.
Optical Sensing and Signal Conversion
- Detects changes in incident light to capture variations in photosynthetically active radiation.
- Converts received optical energy into an electrical signal proportional to the incident radiation intensity.
- Incorporates a specially treated dust cover to reduce dust accumulation on the sensing surface.
- Uses optical components designed to reduce environmental interference with internal sensing elements.
Digital Data Acquisition and System Integration
- Transmits measurement readings through the RS485 interface using the Modbus-RTU communication protocol.
- Allows the device address to be configured for identification within an RS485 network.
- Supports baud rate selection to match communication settings with the connected host system.
- Provides register access for reading radiation values and adjusting the measurement deviation setting.
Applications
SISCO PAR sensor supports agricultural research, greenhouse light monitoring, meteorological observation, ecological studies, and plant physiology experiments by providing photosynthetically active radiation measurements for light condition analysis and scientific data collection.
Crop Growth
Energy Radiation Research
Environmental Research
Greenhouse
| Model | SISCO-RADS-GH-NO1 |
| Spectral Response Range | 400–700 nm |
| Output Signal | RS485 |
| Measurement Range | 0–2500 μmol/(m²·s) |
| Accuracy | ±2% (at 1000 μmol/(m²·s), 550 nm, 60% RH, 25°C) |
| Resolution | 1 μmol/(m²·s) |
| Linearity | ≤ ±1% |
| Response Time | 0.1 s |
| Annual Stability | ≤ ±2% |
| Communication Protocol | Modbus-RTU |
| Supply Voltage | DC 10–30 V (default) |
| Power Consumption | 0.06 W |
| Operating Temperature | -30°C to 75°C |
| Housing Material | Aluminum Alloy |
| Protection Rating | IP67 |
| Installation Features | Bubble Level and Adjustment Handwheel |
Dimensions (unit: mm)
Details
Wiring Method
| Wire Color | Function |
| Brown | Power Positive(DC 10-30V) |
| Black | Power Negative |
| Green | RS485A |
| Blue | RS485B |
Q1: What factors can affect the readings of a PAR sensor?
A1: Dust accumulation on the sensing surface, incorrect leveling, and obstructions that block incoming light can affect measurement results. Keep the sensing surface clean and install the sensor with a clear view of the incident light.
Q2: Can a PAR sensor operate continuously outdoors?
A2: The IP67-rated aluminum housing is designed to protect internal components against dust and water ingress. For long-term outdoor use, regularly inspect the housing, cable connections, mounting screws, and sensor level.
Q3: How can communication problems with an RS485 PAR sensor be diagnosed?
A3: Check the A/B wiring polarity, power supply, device address, and baud rate. Ensure that the host system uses compatible Modbus-RTU settings and that each device on the RS485 network has a unique address.
Tips: What maintenance practices help keep a PAR sensor in good working condition?
- Check the sensor housing and mounting components regularly for visible damage, loose screws, or signs of wear.
- Inspect power and signal cables for damaged insulation, cracks, or loose connections.
- Clean the outer surface with a soft cloth and avoid disassembling the sensor to prevent damage to internal components.
- Verify the bubble level periodically to ensure the sensor remains horizontally aligned after installation.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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