WEATHER STATION (Simple Form) 3075
Compromising a self assembly weather screen with one wind vane and one Anemometer,
a wet and dry bulb hydrometer, a maximum and minimum thermometer, housed in a
thermometer screen made of seasoned wood with louvers at all 4 sides, front openable
hinged with chain, painted white. Dimensions 200x175x125mm HxWxD. The above list
does not include the entire range of instruments available, please feel free
to request other items throughout this field.
LUX METER 3105
Foot candles/Lux Meter accurately displays the light level in terms of Foot
candles (Fc) or Lux. Measuring ranges:
Foot candle : a. 0-200, b. 0-2000 and c. 0-5000 with resolution to 0.1
Lux : a. 0-2000, b. 0-20000 and c. 0-50000 with resolution to 1.0
SUNSHINE RECORDER 3110
Campbell-stokes pattern, for the self recording of duration of Sunshine from
Sunrise to Sunset of the day. This is a tropical pattern suitable for use
in the latitudes 5º South to 45º North. Bowl made of Tin Bronze
surface finished black painted and hard Lacquer, with cut glass sphere mounted
concentrically in a section of the spherical bowl, the diameter of which
is such that when the instrument is exposed to sun rays they are sharply
focused on a card held in the grooves of the bowl, the focused sunray’s
burn a trace on the recording card which has a time scale printed on it.
The length of the burn indicates the period of bright Sunshine during the
day. Complete in a wooden box with recording cards for one year.
PYRANMOMETER (Thermo-Electrical) 3114
The pyranmometer is used to measure total (beam plus diffuse) solar radiation.
The precision spectral pyranometer being used has a black thermopile sensor
protected by two concentric hemispherical optically ground covers. The detector
is independent of wavelength of radiation over the solar energy spectrum
PYRANOMETER SILICON CELL 3115
Silicon Cell Pyranometer measures global solar radiation. This pyranometer
is low cost, lightweight, and easy to install. Pyranometer except it, includes
a mounting and leveling plate. The sensor is a silicon photovoltaic cell
which absorbs radiation from 0.35 to 1.15 microns. The silicon cell converts
this light energy directly into electrical energy, and the output voltage
(approximately 70µV/w/m2) is essentially linear with light intensity.
Full-scale response time is less than 1 millisecond due to the fact that
the instruments is light sensitive, not heat sensitive like thermopile pyranometer.
If the output is integrated over a daily period, the accuracy of the value
is within ±3%. Accuracy of instantaneous values is ±5%. temperature
compensation is provided from 4°C to 60°C.
ACTINOGRAPH (Mechanical) 3122
Is used to provide a continuous record of the intensity of the Sun & Sky
Radiation. Two Black Bi-metallic strips & two white strips are attached
to a common coupling. The white Bi-metallic strips reflect the radiation from
the sun, black bi-metallic strips absorb it. So the temperature of the black
Bi-metallic strips rise & they bend. The intensity & solar Radiation
from the difference of this deflection on each Bi-metallic strip. The glass
hemisphere which covers the Bi-metallic sensors will transmit about 90° of
the wave length of electromagnetic energy between 0-3C and 2.0 microns. the
instruments is complete self contained and requires no external Power.
Specification:
Sensor: Black & white Bi-metallic strips 2 each.
Full Scale: Approx 2 cal/cm2 mm.
Chost: Effective width 50mm
Drum Rotation: 24 hours.
Dimension: 330 x 200 x 287mm approx.
RAIN GAUGE 3151
This is symon type ordinary rain gauge. The outer body is made entirely of
light, right and robust Fiber glass reinforced polyester. The collector is
fitted with non-rusting gunmetal rim. Complete with rain collecting bottle
and rain measuring cylinder. Cap:
(a) 100cm sq. collecting area.
(b) 200
cm sq. collecting area.
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