| Because the
spectral response of a quantum meter sensor and the spectral output of electric lamps is
constant, the errors under different lamp types can be calculated. Use the table at right
to determine the conversion factor required for each type of meter calibration. The
error under a combination of incandescent and fluorescent light depends on the ratio of
the two light sources. For example, if the incandescent is 10% of the total PPF, the meter
reading would be 2% low (i.e., 20% of 10%).
Spectral Response of Quantum Meter Apogee Sensor
Return to main Quantum Meter catalog page |
| Electric
Light Calibration |
Sunlight
Calibration |
| Lamp Type |
Error |
Lamp Type |
Error |
| Cool White Fluorescent |
0 |
Cool White Fluorescent |
10% high |
| Metal Halide |
2 % low |
Metal Halide |
8% high |
| High Pressure Sodium |
2 % high |
High Pressure Sodium |
12 % high |
| Sunlight |
10% low |
Sunlight |
0 |
| Incandescent |
18% low |
Incandescent |
N/A |
|
