3
2.3 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 Required:
Up to 0
–
2 V
5-15 V DC
Up to 0
–
5 V
9-15 V DC
Up to 0
–
10 V
12-15 V DC
The amplifier’s level of amplification (gain) was set at the time of
manufacture and is not user adjustable.
Typical working ranges for various sensors are given below.
Sensor type:
Working range:
Typical Value on a Summer's Day:
PAR Special
0
–
3,000 µmol m
-2
s
-1
>2,000 µmol m
-2
s
-1
PAR Quantum
0
–
3,000 µmol m
-2
s
-1
>2,000 µmol m
-2
s
-1
Lux
0
–
150,000 Lux
>100,000 Lux
PAR Energy
0
–
600 W m
-2
>500 W m
-2
Pyranometer
0- 1,500 W m
-2
>1,100 W m
-2
If the sensor is 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.
Please Note:
Do not apply power to output lead. Output will drive loads with
impedance from ∞ to about
1kW. No damage will be cause by momentary shorting to the common, but should never (even
momentarily) be shorted to the supply.
