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4-20MA Temperature and Humidity Sensors
Key Features
- Two independent 4-20mA channels transmit temperature and humidity simultaneously over one loop
- Measurement precision reaches ±0.5°C for temperature and ±2–3% RH for humidity
- Wide sensing range covers –40°C to +120°C and 0% to 100% RH for versatile deployment
- Excellent long-term stability keeps drift within ≤1% RH/year and ≤0.1°C/year
- Fast response delivers humidity readings within 8 s and temperature within 25 s
- Wide 10–30V DC supply voltage ensures flexible, hassle-free integration into any system
- IP40, IP65, and IP68 ratings cover indoor, outdoor, and harsh industrial environments
- Compact, wall-mountable housing installs easily into panels and electrical enclosures
- Optional LCD display enables clear on-site readings without additional instruments
- Optional RS485/Modbus RTU output adds digital communication alongside the analog loop
Modbus Temperature and Humidity Sensors
Overview
- Standard Modbus RTU uses industrial RS485 protocol supporting up to 247 device nodes
- Long-Distance Transmission maintains reliable data communication over distances up to 1200 meters
- Wide Temperature Range operates safely in harsh industrial environments from -40 ℃ to 85 ℃
- High Precision Sensing delivers accurate temperature and humidity readings with minimal tolerance
- Durable IP65 Housing features a certified dustproof and waterproof enclosure for harsh conditions
- Cost-Saving Daisy-Chaining connects multiple sensors on one bus, reducing cabling costs significantly
- Low Power Consumption ensures long-term operational stability with minimal energy use
- Excellent Anti-Interference resists electromagnetic noise to ensure reliable performance in industrial sites
- Real-Time Monitoring provides rapid data updates for prompt and efficient environmental control
- Plug-and-Play Integration offers simple configuration to save time during system deployment
RS485 Temperature And Humidity Sensor
Overview
- Stable RS485 communication up to 1,200 m for long-distance industrial monitoring
- Modbus RTU protocol for seamless PLC, HMI, and SCADA integration
- ±15KV ESD protection and built-in TVS diodes for strong anti-interference performance
- High-precision sensing with ±0.3 °C temperature and ±3 % RH humidity accuracy
- Supports up to 254 devices on one RS485 bus to reduce wiring costs
- Rugged IP65 enclosure for harsh factory and greenhouse environments
- Ultra-low annual drift < 0.1 °C for long-term stability and reduced maintenance
- Wide 9–30 V DC power input compatible with standard 24 V industrial systems
- Fast response time with data refresh < 2 seconds
- Reliable operation in extreme temperatures from –40 °C to +80 °C