Parameters Solar radiation
Sunshine duration
Type Fixed
System type Sensors
Features Weatherproof
Power source Battery powered
Accuracy (±%) 5%
 
 
 

The innovative SPN1 Sunshine Pyranometer measures global (total) and diffuse radiation, and sunshine state – all in one instrument.

  • DNI (Direct-Normal Irradiance) calculation
  • WMO sunshine threshold: 120 W.m-2 direct beam
  • No moving parts, shade rings or motorised tracking
  • No routine adjustment or polar alignment
  • Works at any latitude
  • Precision ground glass dome

The SPN1 is exceptionally easy to use; it needs no routine adjustment or polar alignment and works at any latitude. It is an affordable and effective alternative to shade-ring pyranometers, pyrheliometers and traditional sunshine recorders.

Output from an SPN1 Sunshine Pyranometer enables calculation of DNI (Direct-Normal Irradiance) in sun tracking, horizontal and tilted installations.

An internal heater keeps the dome clear of dew, ice and snow down to -20°C (in still air conditions), ensuring reliable readings in difficult climatic conditions.

The SPN1 is protected by patents EP 1012633 and US 6417500.


The innovative SPN1 Sunshine Pyranometer measures global (total) and diffuse radiation, and sunshine state – all in one instrument.

  • DNI (Direct-Normal Irradiance) calculation
  • WMO sunshine threshold: 120 W.m-2 direct beam
  • No moving parts, shade rings or motorised tracking
  • No routine adjustment or polar alignment
  • Works at any latitude
  • Precision ground glass dome

The SPN1 is exceptionally easy to use; it needs no routine adjustment or polar alignment and works at any latitude. It is an affordable and effective alternative to shade-ring pyranometers, pyrheliometers and traditional sunshine recorders.

Output from an SPN1 Sunshine Pyranometer enables calculation of DNI (Direct-Normal Irradiance) in sun tracking, horizontal and tilted installations.

An internal heater keeps the dome clear of dew, ice and snow down to -20°C (in still air conditions), ensuring reliable readings in difficult climatic conditions.

The SPN1 is protected by patents EP 1012633 and US 6417500.


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Delta-T Devices Ltd
130 Low Road
Burwell
Cambridge
CB25 0EJ
Tel: 01638 742922
Fax: 01638 743155
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SPN1 Sunshine Pyranometer