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Micro Climate Studies
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Environmental Monitoring
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Plant and Crop Research
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Short Term Weather Projects
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Irrigation Scheduling
DataHog2 Datalogger | |
Operating Range | -20 to +70°C |
Inputs | Current - nA to µA |
Resolution | 15 bits A/D converter |
Sample & Log Intervals | 10s up to 24 hrs |
Data Storage | Battery backed RAM. Onboard capacity for up to 27,000 readings* |
Housing | ABS enclosure sealed to IP 65 |
Clock | Real time clock |
Communications | RS232/USB |
Power Supply | Internal 9 volt batteries ** |
Battery Life | 3-6 months depending on number of sensors in use and logging interval |
Data Format | ASCII text file |
* Extra storage available with addition of SD storage module (internal or external) | |
Sensors | |||||
Sensor | Range | Accuracy | Operating Range | Sensor Type | Resolution |
Relative Humidity | 0-100% | ±2% | -20 to +60°C | Capacitive | better than 0.1% |
Air Temperature | -20 to +70°C | ±0.2°C between 0 and 60°C | -20 to + 70°C | Thermistor | better than 0.1°C |
Solar Radiation | 400 - 1100nm | ±5% traceable to UK Met Office | -20 to +70°C | Silicon cell | 0.01 w m -2 |
Windspeed | 0-75 m/s | 1% of reading between 10 and 55m/s, 2% above 55m/s. 0.1m/s for 0.3..10m/s | -20 to +70°C | Contact closure | better than 0.01 m/s |
Wind Direction | 0 to 360° | ±2° | -20 to +70°C | Potentiometer | 5° |
Raingauge | 0 - 1000mm/hr | 99% up to 120mm/hr | 1°C to +70°C | Contact closure (reed switch) | std RG is 0.2mm (0.005") (0.1mm available) |
GPRS REMOTE COMMUNICATIONS
GPRS – system includes data modem, control electronics, solar panel regulator, solar panel, 12V battery. Data SIM card required.
GPRS/SD – as above but incorporating an SD storage feature for added data security
MAST OPTIONS
ACC/11C 2m mast with baseplate, guylines & pegs
ACC/11D 10m retractable mast
ACC/11E 2m pole with handrail fixings and baseplate for roof installation
ACC/11F 3m pole with T&K brackets and fixings for wall mounting
POWER SUPPLIES
ACC/5 Solar Hog – 1 watt solar panel & rechargeable batteries with bracket & V volts
ACC/9 Mains Power Supply to power MiniMets up to 50m from mains supply
ACC/9B Mains Supply to power MiniMets over 50m from mains supply
Please click HERE to be transferred to our Case Studies section
Evapotranspiration is the loss of water from the soil both by evaporation from the soil surface and by transpiration from the leaves of the plants growing on it. Factors that affect the rate of evapotranspiration include the amount of solar radiation, atmospheric vapor pressure, temperature, wind, and soil moisture. Evapotranspiration accounts for most of the water lost from the soil during the growth of a crop. Estimation of evapotranspiration rates is thus important in planning irrigation schemes.
The MiniMet3 E.T Weather Station measures all the parameters needed to estimate evapotranspiration, it includes only the sensors required for this calculation.
