Lufft WS301 Smart Weather Sensor

Product Number: 8374.1

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Overview

Overview Benefits Specifications Resources

Overview

The WS301-UMB is a compact all-in-one weather sensor for measurement of temperature, relative humidity, radiation (spectral flat Class C, K&Z CMP3) and air pressure. It is part of the WS product family of professional intelligent measurement transducers with a digital interface for environmental applications. It has an integrated design with ventilated radiation protection. One external temperature or rain sensor is connectable.

Benefits

All-in-one housing concept & easy installation

All-in-one housing concept of a compact weather sensor combining several measurement parameters in one housing with only a single cable connection.

Maintenance-free operation

Maintenance free operation as there are no moving parts that can wear out.

Flexible interfaces and telegrams

SDI-12 and RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, and XDR.

Spectrally flat Class C Pyranometer

Aspirated radiation shield

Specifications

Technical Attributes

Air Pressure	Accuracy: ±0.5 hPa (0 - +104 °F) or ±0.5 hPa (0 - +40 °C) Measuring range: 300 - 1200 hPa Measurement technology: MEMS capacitive
Air Temperature	Accuracy: ±0.4 °F (-4 - +122 °F) or ±0.2 °C (-20 - +50 °C), otherwise ±0.9 °F (˃ -22 °F) or ±0.5 °C (˃ -30 °C) Measuring range: -58 - +140 °F (-50 - +60 °C) Measurement technology: NTC Resolution: 0.1 °C (-20 - +50 °C), otherwise 0.2 °C
Analogue inputs	1
Battery?	No
Cable Connection	Open wires
Cable Length	33 ft (10 m)
Casing IP Rating	IP66
Communication	SDI-12 and RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR
Dimensions (free text)	Ø150 x 268 mm
Interface	RS485 2 wire Baud rate: 1200 - 38400 bit/s (Standard: 19200) or SDI-12
Material enclosures	Plastics (PC)
Non-linearity	˂ 1.5 % (0 - 100 W/m²)
Non-stability	˂ 1% (change/year)
Operating humidity	0 - 100 %
Operating temp range 1	-50 - +60 °C
Power supply	12 - 24 VDC
Relative humidity	Accuracy: ±2 % RH Measuring range: 0 - 100 % RH Measurement technology: Capacitive
Solar Radiation	Accuracy: 5 % Measuring range: Maximum operational irradiance; 2000 W/m² Measurement technology: Kipp & Zonen CMP3 Spectral accuracy: 300 - 2800 nm Response time: ˂ 6 s (63 %), 18 s (95 %) Non-linearity: ˂ 1.5 % (0 - 100 W/m²) Non-stability: ˂ 1 % (change/year)
Weight EU	3.3 lb (˂ 1.5 kg)

Resources