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
All-in-one housing concept of a compact weather sensor combining several measurement parameters in one housing with only a single cable connection.
Tipping bucket rain sensors' yields enables low power operation mode.
SDI-12 and RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, and XDR.
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) | Ø164 (6.46 in) x 380 mm |
| Interface | RS485 2 wire Baud rate: 1200 - 38400 bit/s (Standard: 19200) or SDI-12 |
| Material enclosures | Plastics (PC) |
| Operating humidity | 0 - 100 % |
| Operating temp range 1 | -50 - +60 °C |
| Power supply | 12 - 24 VDC |
| Precipitation | Accuracy: 2.0 % Measuring range: 0 - 200 mm/h Measurement techology: Rain Gauge Tipping bucket |
| Relative humidity | Accuracy: ±2 % RH Measuring range: 0 - 100 % RH Measurement technology: Capacitive |
| Weight EU | 3.3 lb (˂ 1.5 kg) |
Resources
Manuals (6)
Data Sheets (3)
Software/Firmware (6)
Certificates (1)
Case Studies (1)
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