The Middleton EQ16 Pyrano-Albedometer is a dual head version of the Middleton EQ08 First Class Pyranometer. It is for the measurement of the ratio of upward to downward solar radiation flux density on a plane surface. The EQ16 has a direct microvolt output, and the EQ16-E version has an in-built signal amplifier.

 

Performance Specification	ISO9060 First Class	EQ16 & EQ16-E (typical)
Response time (to 95%)	< 30s	11s
Zero off-set: a) 200 W.m-2	+ 15 W.m-2	< + 6 W.m-2
b) 5K.h-1	± 4 W.m-2	< ± 2 W.m-2
Non-stability (per year)	± 1.5%	+1.5%, -0.5%
Non-linearity ( 100-1000W.m-2)	± 1%	± 0.5%
Directional response (w.r.t. 1000 W.m-2)	± 20 W.m-2	< ±15 W.m-2
Spectral selectivity (0.35 to 1.5µm)	± 5%	< ±3%
Temperature response (for 50K interval)	4%	< 2%
Tilt response (0-90°)	± 2%	± 0.25%

 

MATCHED UPWARD AND DOWNWARD RESPONSE

Marine grade aluminium, hard anodized for corrosion resistance.

 

Bubble level on top of instrument for easy viewing.

 

Fully sealed construction for low-maintenance.

 

Excellent directional response.