Product Overview
The OHTS1123 is an industrial-grade meteorological monitoring device featuring integrated multi-parameter measurement. Utilizing an all-in-one structural design, it simultaneously acquires environmental parameters including wind speed, wind direction, temperature and humidity, noise, particulate matter (PM2.5/PM10), carbon dioxide concentration, and atmospheric pressure.
The device employs an RS485 interface and supports the standard ModBus-RTU communication protocol, ensuring compatibility with PLC configuration systems and host computer monitoring platforms. The housing utilizes UV-resistant engineering materials with a protection rating suitable for long-term outdoor deployment. Internal sensors employ high-sensitivity probes to ensure measurement stability across wide temperature and humidity ranges. Bluetooth wireless parameter configuration is supported to facilitate on-site commissioning and maintenance.
Features
- Multi-parameter integrated design reduces on-site wiring complexity by combining nine meteorological parameters in a single device
- Low moment of inertia wind measurement mechanism with response time ≤ 3.5s for real-time wind speed and direction monitoring
- Noise measurement range 30dB~130dB, compliant with industrial environmental acoustic monitoring requirements
- Particulate matter detection employs laser scattering principle with counting efficiency of 50% @ 0.3μm, 98% @ ≥ 0.5μm
- Carbon dioxide detection range 0
5000ppm with effective range 4005000ppm, suitable for outdoor high-humidity environments - Atmospheric pressure measurement range 0~120kPa, adaptable to altitude variation scenarios
- Wide voltage power supply design (DC 10~30V), compatible with solar power systems
- Bluetooth BLE parameter configuration function, supporting real-time data reading and parameter modification via Android mobile terminals
- Standard ModBus-RTU protocol with configurable baud rate 1200~115200bit/s
Applications
The OHTS1123 integrated weather station is suitable for diverse environmental monitoring applications including:
- Grid-based deployment of environmental monitoring stations
- Smart city air quality monitoring systems
- Boundary noise and gas monitoring for industrial parks
- Construction site dust monitoring systems
- Agricultural greenhouse environmental control systems
- Meteorological data collection at transportation hubs
- Photovoltaic power station environmental monitoring
- Warehouse logistics environmental monitoring
- Meteorological observation for universities and research institutions
- Ecological environment monitoring for scenic areas
Technical Specifications
| Parameter Category | Parameter Item | Specification Value |
|---|---|---|
| Power Supply | DC Supply Voltage | DC 10~30V |
| Maximum Power Consumption (RS485 Output) | 0.8W | |
| Measurement Accuracy | Wind Speed | ±(0.2+0.03V)m/s (V = wind speed value, 60%RH, 25℃) |
| Temperature | ±0.5℃ (25℃) | |
| Humidity | ±3%RH (60%RH, 25℃) | |
| Atmospheric Pressure | ±0.15kPa @ 25℃ 101kPa | |
| Noise | ±0.5dB (reference tone 94dB @ 1kHz) | |
| PM2.5 | Particle counting efficiency: 50% @ 0.3μm, 98% @ ≥ 0.5μm Accuracy: ±3%FS (@ 0~100μg/m³, 25℃, 50%RH) | |
| CO₂ | ±(50ppm+3%F·S) (25℃) | |
| Measurement Range | Wind Speed | 0~70m/s |
| Wind Direction | 8-direction indication (0 | |
| Temperature | -40℃~+80℃ | |
| Humidity | 0%RH~99%RH | |
| Atmospheric Pressure | 0~120kPa | |
| Noise | 30dB~130dB | |
| PM2.5/PM10 | 0~1000μg/m³ | |
| CO₂ | 0 | |
| Long-term Stability | Temperature Drift | ≤ 0.1℃/y |
| Humidity Drift | ≤ 1%/y | |
| Atmospheric Pressure Drift | -0.1kPa/y | |
| Noise Drift | ≤ 3dB/y | |
| Particulate Matter Drift | ≤ 1%/y | |
| CO₂ Drift | ≤ 1%/y | |
| Response Time | Wind Speed/Wind Direction | ≤ 3.5s |
| Atmospheric Pressure | ≤ 2s | |
| Noise | ≤ 3s | |
| PM2.5/PM10 | ≤ 90s | |
| CO₂ | Generally < 180s for 90% step change | |
| Temperature (τ₆₃) | ≤ 25s (1m/s wind speed) | |
| Humidity (τ₆₃) | ≤ 8s (1m/s wind speed) | |
| Resolution | PM2.5/PM10 | 1μg/m³ |
| CO₂ | 1ppm | |
| Communication Interface | Output Signal | RS485 (Standard ModBus-RTU Protocol) |
| Baud Rate | 1200~115200bit/s configurable, factory default 4800bit/s | |
| Data Format | 8 data bits, no parity, 1 stop bit | |
| Maximum Communication Distance | 2000m |
Physical Specifications
| Parameter Item | Specification Value |
|---|---|
| Housing Material | UV-resistant Engineering Plastic |
| Protection Rating | Outdoor suitable |
| Mounting Interface | Standard sleeve mounting (optional 2-meter pole) |
FAQ
Q: What is the measurement range and accuracy for wind speed?
A: The wind speed measurement range is 0~70m/s with accuracy of ±(0.2+0.03V)m/s where V represents the wind speed value, tested at 60%RH and 25℃. The response time is ≤ 3.5s due to the low moment of inertia design.
Q: Can PM2.5 and CO2 sensors work simultaneously?
A: No, PM2.5 and CO2 elements are mutually exclusive configurations. If CO2 is selected, register 507 indicates CO2 concentration value in ppm and register 508 becomes invalid. Please specify your measurement requirements when ordering.
Q: What are the power supply requirements and communication capabilities?
A: The device requires DC 10 ~ 30V power input with maximum consumption of 0.8W. It uses RS485 interface with standard ModBus-RTU protocol, supporting baud rates from 1200~115200bit/s with default 4800bit/s, and maximum communication distance of 2000m.
Q: Are there any environmental limitations for the humidity sensor?
A: Yes, the humidity sensor operates on capacitive principles and should avoid long-term use in environments containing Volatile Organic Compounds (VOCs) to prevent sensor drift or damage. Regular inspection of sensor air inlets is required to ensure no dust blockage.
Q: What safety precautions should be observed during installation?
A: The device is strictly prohibited from use as a safety protection or emergency stop device. Power supply must not exceed DC 10 ~ 30V range. RS485 wiring requires correct A and B polarity to avoid communication failures. For long-distance transmission, use shielded twisted pair cable and install a 120Ω termination resistor at the bus end.