CW 18
Features
- Complete system for universal recording of weather data and other environmental variables
- Integrated data logger with up to 8 analog and digital measurement channels
- Rain Gauge made from stainless steel in dimensions and design according to Hellmann:
- Tipping bucket with 0.1 mm resolution
- 200 cm2 catchment area in the altitude of 1 m
- Heating installation for operating in winter time (optional)
- Sensors (optional):
- Temperature, humidity, air pressure
- Ground temperature, soil moisture
- Chemical quantities
- Power supply:
- External with 24 VDC, 12 VDC (optional)
- External with 230 VAC, 110 VAC (optional)
- Battery (Alkaline or Lithium)
- Up to 10 years operational battery life (daily transmission of measurement values, also GSM)
- Protection class IP65 for data logger and external power supply
- GSM modem for the transmission of measured values and alarms (optional)
Specifications
- Data logger and power supply in weatherproof housing, IP65 housing, stand and movable parts of the rain gauge are made from stainless steel
- Configurable measurement rate up to 1 measurement per second
- Switched feed-in sensor by the logger (5 Volt ±5%, 10 mA max load)
- Storage capacity 512 kBytes (approx 340,000 measured values)
- Measuring ranges:
| Voltage | ±50mV, ±200mV, ±500mV, ±1V, ±2V, ±10V |
| Current | 0 - ±20mA, 4 - 20 mA |
| Event | z.B. Reed-Contact to 1 event per second |
| Digital | 0V ≤ low ≤ 1V, 4V ≤ high ≤ 5V |
| Frequency | 0,01 Hz to 6MHz |
| Periodic time | up to 24 hours (resolution 1 µs) |