Product Overview
The OHTS1050 is an integrated multi-element meteorological monitoring device featuring a louvered radiation shield design. It integrates acoustic noise acquisition, particulate matter (PM2.5/PM10) detection, temperature and humidity sensing, atmospheric pressure measurement, and illuminance monitoring functions. The device provides RS485 interface output and supports the standard Modbus-RTU communication protocol, making it suitable for continuous monitoring and data acquisition of outdoor environmental parameters.
Designed for demanding outdoor applications, the OHTS1050 combines multiple sensing technologies into a single rugged enclosure. The louvered radiation shield construction utilizes UV-resistant engineering plastic to ensure reliable operation in harsh environmental conditions. With support for communication distances up to 2000m and configurable parameters, this sensor is ideal for distributed environmental monitoring networks.
Features
Integrated Structural Design: Incorporates six measurement elements including noise, particulate matter, temperature & humidity, barometric pressure, and illumination in a single compact unit.
Louvered Radiation Shield Housing: Constructed from UV-resistant material with professional radiation shield design, suitable for long-term outdoor deployment.
Advanced PM Detection: Employs dual-frequency data acquisition and auto-calibration technology for accurate particulate matter measurement with high particle counting efficiency.
Flexible Power Options: Wide voltage supply range of 10VDC ~ 30VDC accommodates various installation scenarios including solar-powered remote monitoring stations.
Robust Communication Interface: RS485 digital output supporting Modbus-RTU protocol with communication distance up to 2000m, featuring software-configurable device address and baud rate.
High Accuracy Sensors: Temperature and humidity measurement unit utilizes capacitive sensing principle with excellent long-term stability and fast response times.
Applications
The OHTS1050 is designed for comprehensive environmental monitoring across various sectors:
- Multi-element data acquisition for environmental monitoring stations
- Smart city ambient air quality monitoring
- Construction site dust and noise combined monitoring
- Agricultural meteorological environmental parameter monitoring
- Campus and community environmental quality monitoring
- Industrial park environmental safety monitoring
- Transportation hub environmental status monitoring
- Warehouse and logistics environment temperature and humidity monitoring
- Scientific research meteorological observation stations
- HVAC system environmental parameter acquisition
Technical Specifications
| Parameter Category | Measurement Element | Specification |
|---|---|---|
| Power Supply | DC Power | 10VDC ~ 30VDC |
| Power Consumption | RS485 Output | ≤0.8W |
| Accuracy | Temperature | ±0.5°C (@25°C) |
| Humidity | ±3%RH (@60%RH, 25°C) | |
| Illuminance | ±7% (@25°C) | |
| Atmospheric Pressure | ±0.15kPa (@25°C, 101kPa) | |
| Noise | ±0.5dB (Reference 94dB@1kHz) | |
| PM2.5 | Particle counting efficiency: 50% @ 0.3μm, 98% @ ≥0.5μm Accuracy: ±3%FS (@ 0~100μg/m³, 25°C, 50%RH) | |
| Measuring Range | Temperature | -40°C ~ +120°C |
| Humidity | 0%RH ~ 99%RH | |
| Illuminance | 0 ~ 200000Lux | |
| Atmospheric Pressure | 0kPa ~ 120kPa | |
| Noise | 30dB ~ 130dB | |
| PM2.5/PM10 | 0 ~ 1000μg/m³ | |
| Long-term Stability | Temperature | ≤0.1°C/y |
| Humidity | ≤1%/y | |
| Illuminance | ≤5%/y | |
| Atmospheric Pressure | -0.1kPa/y | |
| Noise | ≤3dB/y | |
| PM10/PM2.5 | ≤1%/y | |
| Response Time (τ63) | Temperature | ≤25s (1m/s air velocity at sensor interior) |
| Humidity | ≤8s (1m/s air velocity at sensor interior) | |
| Illuminance | ≤2s | |
| Atmospheric Pressure | ≤2s | |
| Noise | ≤3s | |
| PM10/PM2.5 | ≤90s | |
| Output | Communication Interface | RS485 |
| Communication Protocol | Modbus-RTU |
Note: Temperature and humidity response time test conditions specify 1m/s air velocity at the sensor’s internal sensing material location, corresponding to test environment air velocity of 10⁻²m/ms with wind direction perpendicular to the sensor acquisition port.
Physical Specifications
| Parameter | Specification |
|---|---|
| Housing Material | UV-resistant Engineering Plastic |
| Protection Structure | Louvered Radiation Shield Design |
FAQ
Q: Can this device be used as a safety or emergency stop device?
A: No, this device is strictly prohibited from use as a safety device or emergency stop device, nor shall it be used for any other purpose where equipment failure may cause personal injury. Technical documentation must be consulted prior to installation, operation, or maintenance.
Q: Are there any environmental restrictions for the humidity sensor?
A: Yes, the humidity sensor operates on a capacitive principle and should be avoided in environments containing volatile organic compounds (VOCs) as they may affect measurement accuracy.
Q: What are the requirements for RS485 bus wiring and device addressing?
A: Device addresses on the same bus must not conflict with factory default address being 0x01. RS485 signal lines A and B must not be reversed in polarity. Bus wiring should utilize bus-type topology and avoid star connections. A 120Ω termination resistor is recommended at the bus end.
Q: What is the warranty period for the PM sensor?
A: The PM sensor warranty period is 12 months from the date of purchase, while the main device warranty is 24 months. Periodic calibration is recommended to ensure measurement accuracy.
Q: What power supply is recommended for this device?
A: Use of a 10VDC ~ 30VDC DC power supply is recommended to ensure adequate power capacity for device consumption ≤0.8W.