Kintech Engineering – Systems for wind and solar measurement-Data Loggers Used by Professionals for Wind & Solar Resource Assessment Kintech Engineering – Systems for wind and solar measurement-Data Loggers Used by Professionals for Wind & Solar Resource Assessment
Kintech Engineering – Systems for wind and solar measurement-Data Loggers Used by Professionals for Wind & Solar Resource Assessment

Delta-T SPN1

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Delta-T SPN1

Description

The SPN1 measures Global (Total) and diffuse radiation and Sunshine Duration – in one instrument. It is an affordable alternative to shade-ring pyranometers, pyrheliometers and traditional sunshine recorders.

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    Product Description

    The Sunshine Pyranometer is a patented, meteorological class instrument, with built-in heater, designed for long-term outdoor exposure.

    The Sunshine Pyranometer uses an array of seven, miniature thermopile sensors and a computer-generated shading pattern to measure the direct and diffuse components of incident solar radiation. The shading pattern and thermopiles are arranged so that at least one thermopile is always fully exposed to the solar beam, and at least one is fully shaded from it, regardless of the position of the sun in the sky. All seven thermopiles receive an equal amount of diffuse light. From the individual thermopile readings, a microprocessor calculates the global and diffuse horizontal irradiance and from these values an estimate of sunshine state is made.

    • Global (Total) and Diffuse irradiance in W.m-2
    • WMO sunshine threshold: 120 W.m-2 direct beam
    • No routine adjustment or polar alignment
    • No moving parts, shade rings or motorized tracking
    • Works at any latitude

    Overall accuracy: Total (Global)
    and Diffuse radiation    		 ±5% Daily integrals

    ±5% ±10 W.m-2 Hourly averages

    ±8% ±10 W.m-2 Individual readings
    Resolution 0.6 W.m-2 =0.6 mV
    Range 0 to >2000 W.m-2
    Analogue output sensitivity 1 mV=1 W.m-2
    Analogue output range 0 – 2500 mV
    Sunshine status threshold 120 W.m-2 in the direct beam
    Accuracy: Sunshine status ±10% sun hours with respect to the threshold
    Accuracy: Cosine correction ±2% of incoming radiation over 0-90° Zenith angle
    Accuracy: Azimuth angle ±5% over 360° rotation
    Temperature coefficient 0.02% per °C (typical)
    Temperature range -40 to + 70°C
    Stability Recalibration recommended every 2 years
    Response time 100 ms (typical)
    Spectral response 400 – 2700 nm
    Spectral sensitivity variation 10% (typical)
    Non-linearity < 1%
    Tilt response Negligible
    Zero offsets < 3 W.m-2 for a change of 5°C/hr in ambient temperature
    < 3 W.m-2 dark reading
    Latitude capability -90° to + 90°
    Environmental sealing IP67
    Sunshine status output No sun=open circuit
    Sun=short circuit to ground
    Power requirement 2 mA (awake ), <30 µA (asleep) 5 V – 15 V DC
    Heater power 12 V – 15 VDC, up to 1.5 A
    RS232 connector 5-pin M12
    Signal output & power-in connector 8 pin M12
    Mounting options 3 x M5 tapped holes in base at 108 mm dia, 120° spacing
    Size & Weight 126 mm dia. x 94 mm high, 786g
    EN_Pyranometer_DeltaT-SPN1.pdf

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