Solare Datensysteme Solar-Log Sensor basic - Manual (Page 6)

6
Silicon Irradiance Sensors
With Integrated Cell Temperature Measurement
Solar Irradiance Sensors offer a cost effective possibility to
control the energy yield of PV plants. Measuring the current
irradiance beside the energy production allows easily indication
of component failures.
Properties / Advantages
Behaviour like PV Module
•
Irradiance measurement matches well to PV
power production
•
Sensor element: Crystalline solar cell, 20 mm x
34 mm
•
Measurement range irradiance: 0 - 1400 W/m 2
High Accuracy by Temperature Compensation
•
Error of max. 8 % (FSR) at vertical light beam
and under standard test condition (STC)
Measurement of Cell Temperature
•
Cost effective alternative option to direct
module temperature measurement (allows more
accurate yield calculation)
•
Error of max. +/- 2 K at 25 °C cell temperature
•
Measurement range cell temperature:
-25 – +75 °C
Digital Communication via RS485
•
High stability due to differential data commu-
nication
•
Cable prolongable up to 50 m (165 feet)
Sensor Case
Material Powder-coated aluminum
Mounting Plate
3 mm powder-coated Alumi-
num with 4 x M8-drill holes
Drill Size (WxHxD)
138 mm x 38 mm x 64 mm
(with mounting plate)
Weight ca. 440 g
Protection Class IP67
Ambient Temperature -20 – +70 °C
Temperature Range -25 – +85 °C
Relative Air Humidity 20 – 95 %
Electronics
Power Supply
8 – 28 Vdc, via RS485 Data
Cable from Solar-Log™
Supply Current Typical 10 mA
Communication Port RS485
Protocol Solar-Log™, 9600 Baud, 8N1
Connection Cable
•
4 pole, 3 m (10 feet),
weather and uv resistant
(LiY(St) 11 Y (4 x 0,14)
•
prolongable up to 50 m
(165 feet)
compatible with all current
Solar-Log™ models