3.2 Sensor Output & Power Supply
The following table shows the typical outputs of Skye amplifiers, along with the power supply required
for each.
Sensor Output
Power Supply Requirement
0 – 1V, 0 – 2V
5 - 15V
0 – (3V – 6V)
9 – 15V
Typical output ranges for various sensors are given below.
Sensor Output
Typical Value
Sensor
V
Units
on a Summer's Day
SKL 2610 PAR Special
0 – 1V
0 – 3,000
μ
mol m
-2
s
-1
>2,000
μ
mol m
-2
s
-1
SKL 2620 PAR Quantum
0 – 1V
0 – 3,000
μ
mol m
-2
s
-1
>2,000
μ
mol m
-2
s
-1
SKL 2633 Lux
0 – 1V
0 – 150,000 Lux
>100,000 Lux
SKL 2640 PAR Energy
0 – 1V
0 – 600 watts m
-2
>500 watts m
-2
SKL 2650 Pyranometer
0 – 1V
0- 1,500 watts m
-2
>1,100 watts m
-2
If the sensor(s) is/are completely deprived of any light, the amplifier may still output a very small
voltage (fraction of a mV). This value is constant, and can be offset. It is recorded on the calibration certificate
of each amplifier.
** DO NOT APPLY POWER TO OUTPUT LEAD. OUTPUT WILL DRIVE LOADS WITH IMPEDANCE
FROM
∞
TO ABOUT 1K
Ω
. NO DAMAGE WILL BE CAUSE BY MOMENTARY SHORTING TO THE
COMMON, BUT SHOULD NEVER (EVEN MOMENTARILY) BE SHORTED TO THE SUPPLY.**
4
1 – 4 Channel External Amplifier
