Shrubland Park Nurseries Sensor System

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System last rebooted on Sat 05 Oct 2019 at 13:20.

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Atmospheric pressure

Atmospheric pressure is measured by a Bosch BMP085 digital sensor. Each sensor is individually calibrated and should be accurate to ± 1 hPa.

The equivalent sea-level pressure is also tabulated (but not plotted); this is derived using Babinet's formula from the height above sea level and the local air temperature. The local height above sea level and the sensor to use for temperature are specified in the UserDB. The defaults are zero and 10° C.

Station height 70 m asl. Air temperature 4.7 °C

Local pressure Sea-level pressure
hPain HghPain Hg
993.2  29.3  1001.8  29.6 

Atmospheric pressure over the last 24 hours


Sensor° C° FLocation
piggy_in 6.2 43.2piggery_in
office 15.0 59.0office
piggy_out 4.7 40.4piggery_out
poly_lh 8.2 46.7Polytunnel Left
propagator 6.8 44.1propagator
poly_rh 6.5 43.7Polytunnel Right
p_house_cr 7.2 45.0Polhouse CR
p_house_cl 7.5 45.5Polhouse CL
p_house_l 7.0 44.6Polhouse L
Openbarn 6.1 43.0Open Barn
Mainbarn 6.1 42.9Main Barn

DS2438 voltages

This section is more technical and is for voltages measured by DS2438 sensors. Vad measures 0 to 10V with a resolution of 10mV, and Vis measures -250 to 250mV with 0.244mV resolution. Vdd is the local supply voltage.The charts plot just Vis in mV. Each DS2438 also measures its temperature, but with limited accuracy (± 2° C).

Sensor° CVadVddVisLocation
poly_light 4.0 4.80 4.960.000244Poly

Vis (mV) over the last 24 hours

Sensor and system information

System and software © FieldSolutions Glasgow. For more information email 1wire at fsolv dot co dot uk