Overview
The WS401-UMB is a compact all-in-one weather sensor for measurement of temperature, relative humidity, air pressure and precipitation.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 for measuring: Air temperature, relative humidity, precipitation and air pressure. One external temperature sensor is connectable.
Benefits
Low power consumption
Tipping bucket rain sensors' yields enables low power operation mode.
Aspirated radiation shield
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.
Flexible interfaces and telegrams
SDI-12 and RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, and XDR.
Specifications
Technical Attributes
| Operating temp range 1 | -50 - +60 °C |
| Cable Length | 33 ft (10 m) |
| Operating humidity | 0 - 100 % |
| Cable Connection | Open wires |
| Material enclosures | Plastics (PC) |
| Battery | No |
| Interface | RS485 2 wire Baud rate: 1200 - 38400 bit/s (Standard: 19200) or SDI-12 |
| Dimensions (free text) | Ø164 (6.46 in) x 380 mm |
| Analogue inputs | 1 |
| Weight EU | 3.3 lb (˂ 1.5 kg) |
| Communication | SDI-12 and RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR |
| 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 |
| Relative humidity | Accuracy: ±2 % RH Measuring range: 0 - 100 % RH Measurement technology: Capacitive |
| 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 |
| Precipitation | Accuracy: 2.0 % Measuring range: 0 - 200 mm/h Measurement techology: Rain Gauge Tipping bucket |
| Power supply | 12 - 24 VDC |
| Casing IP Rating | IP66 |
Resources
Manuals (6)
Data Sheets (3)
Software/Firmware (6)
Certificates (1)
Case Studies (1)
8160.UISO
Lufft Interface Converter ISOCON-UMB
8366.USV1
Power supply 24V/4A
8379.USP
Lufft Surge Protection
8357.6
Lufft Mast, hot-dip galvanized, tiltable, 6 m
8357.45
Lufft Mast, hot-dip galvanized, tiltable, 4.5 m
8366.USV2
Power Supply 24V/10A