Loading the page
Thermokon · Outdoor sensor · Modbus
WSA RS485 Modbus
Weatherproof outdoor temperature and humidity sensor with radiation shield, Modbus RTU and analogue outputs.
Sign in for trade prices
Availability and lead time confirmed on your quote
Part number626439
Datasheet, PDF
- Quotes answered within 24 hours, no account needed
- DHL, under 15 kg £13.50 ex VAT
- Technical support from the people who commission it
Specification
Communication
- Protocol
- Modbus RTU (RS485), half-duplex, 9600 to 57600 baud
- Connection
- Removable M25 cable entry, plug-in terminal max. 2.5 mm², BUS max. 1.5 mm²
Electrical
- Power supply
- 15 to 35 V DC SELV or 19 to 29 V AC SELV
- Power consumption
- Max. 2.5 W (24 V DC), 4.3 VA (24 V AC)
Environment
- Operating temperature
- -20 to +70 °C
- Humidity
- Max. 85% rH, short term condensation
- Protection
- IP65 IP rating
Performance
- Output signal
- 2 x 0 to 10 V or 0 to 5 V (min. load 10 kΩ), live-zero configurable
- Measuring range
- Humidity 0 to 100% rH; enthalpy 0 to 85 kJ/kg; dew point 0 to +50 or -20 to +80 °C
- Accuracy
- Humidity ±2% (10 to 90% rH), temperature ±0.3 K (typ. at 21 °C)
Physical
- Housing material
- PC, USE-M enclosure with weather protection
- Colour
- Pure white, transparent cover
- Mounting
- Wall or pole
- Dimensions
- 190 x 130 x 250 mm
From the manufacturer's datasheet for 626439.
Overview
The WSA measures temperature and relative humidity outdoors, for meteorology, greenhouses and industrial settings. A radiation shield of curved plates protects the sensors from rain, hail and radiated heat while letting air move across them, which keeps heat from rooftops and nearby surfaces from affecting the reading. It outputs over RS485 Modbus RTU and as two 0 to 10 V or 0 to 5 V analogue signals, and can calculate absolute humidity, enthalpy and dew point. It mounts on a wall or a pole.