Automatic Weather Station MMS4
Measuring Specification
Central Procesor Unit MMS4
Input voltage: 3,5 to 4,2V
Max current : 0,4A
Min current (sleep mode): 0,001A
AVG curent: 0,008-0,012A / 10min (depends on the strength of the GSM signal)
Internal battery: LiIon
Power supply: solar panel
Battery regulator charge: MPPT
Max power: 5W / 12V
Autonomy: 10-15 day (without a solar panel)
Deep discharge protection: <3,50V
High charge protection: >4,20V
Operating temperature: -30 - +55°C
Operating humidity: 0 – 100% RH
IP rating: IP67
EMC: EN61326

Statistical calculations are repeated every: 2s
GSM transmission data updated: 60s
Number of sensors: 12
Monthly data consumption: <200MB

GSM: GPRS / SMS
GSM protocol: GSM-850, EGSM-900, DCS-1800, PCS-1900 MHz Quad-Band
GPRS class 10
Antenna: 2,5 dBi internal

Dimensions H x W x D: 400 x 1000 x 250
Weight: 5,5Kg
Materials: Stainless steel (A2), UV resistant plastic, FeZn painted white / black
Mounting: vertical bearing column Ø 50 – 125 mm

Shipping dimensions: 310 x 1200 x 310 mm
Shipping weight: 6,5Kg
MMS4 Detailed Measuring Specification

Wind Speed

Measuring range: 0.0 to 75m/s
Starting Threshold: <0.2m/s
Resolution: < 0.1 m/s
Accuracy: ± 0.3 m/s (with 0.4 to 60m/s)
Operating Temp: -20 to +60˚C
Relative Humidity: 0 - 100%

Wind Direction

Measuring range: 0 to 359 Deg.
Starting threshold: < 0.5 m/s
Operating temperature: -20 to +60°C
Resolution: 22,5° (optional 1°)
Accuracy: ±1 Deg

Air Temperature

Measurement range: -40 to +60 °C
Resolution: 0.1 °C
Accuracy:±0.1°C

Relative Humidity

Range: 0 – 100%
Resolution: 0.1% RH
Accuracy: ±0,5% RH from 3 to 95%
Operating Temp. range: - 40 to +60°C
Excellent linearity and sensitivity with fast response and
long-term stability

Dew Point

Resolution: 0.1 °C
Accuracy: ±0.2°C
Operating range: - 40 to +60°C / 0-100% RH

Pressure

Range: 500-1100hPa
Resolution: 0.10hPa
Accuracy: ±0,5hPa
Operating temperature range -40 to +60°C

Solar Radiation * (optional)

Spectral range (50% points): 310 to 2800 nm
Sensitivity: 5 to 20 μV/Wm2
Response Time: 5 Sec
Non-Linearity (0 to 1000W/m): ±0.2%
Non-Stability (change/year): ± 0.5 %
Temperature dependency of sensitivity (-10°C to 40°C): 1%
Operating temperature: -40°C to +80°C
Expected daily accuracy: ±2%

Rain Precipitation * (optional)

Diameter of aperture: 225mm
Orifice: 400cm2
Resolution/Sensitivity: 0.2mm
Rainfall capacity: Unlimited
Capacity per Minute: Max. 30 tips (3 resp. 6mm)
Accuracy: ± 1% (at 25 mm/hr.)
Signal output: Pulse signal
Measuring Principle: Tipping bucket - double spoon
Switch closer time: <10 millisecond