Adjusted gain – Kipp&Zonen AMPBOX Amplifier User Manual
Page 12
2.2. Adjusted gain
The adjusted gain can have various different settings.
For pyranometers this gain is adjusted to 1 mA / 100 W/m²
(except CM 4)
For the CM 4 Pyranometer the gain is adjusted to 1 mA / 250 W/m²
For pyrgeometers the gain is adjusted to 1 mA / 25 W/m² or 50 W/m²
For CUV radiometers the gain is adjusted to 1 mA / 6.25 W/m²
For the CHP 1 Pyrheliometer the gain is adjusted to 1 mA / 100 W/m²
For the PQS 1 PAR Quantum Sensor the gain is adjusted to 1 mA / 200 µmol/s/m²
For the NR Lite2 Net Radiometer the gain is adjusted to 1 mA / 100 W/m²
Eeach instrument
(or gain adjustment)
can have its own zero offset. For example a pyrgeometer starts at -600 W/m².
Note
These gain adjustments are based on practical outdoor measurements. Customized adjustments can be possible.
The next illustration displays the current sink against the incoming radiation for a pyranometer
(1 mA / 100 W/m² gain setting)
.
Note
An AMPBOX with an adjusted gain can only be used with the corresponding solar radiation instrument.
W/m² input
0
0
400
800
1200
1600
4
8
12
16
20
mA output
CG / CGR
-600
200
W/m
2
CH / CHP
0
1600
W/m
2
CM / CMP / SP Lite / SP Lite2
0
1600
W/m
2
CM 4
0
4000
W/m
2
CMA
0
1600 W/m
2
CUV 4 / CUV 5
0
100
W/m
2
NR Lite / NR Lite2
-400
1200
W/m
2
PAR Lite / PQS 1
0
3200
µmol/ s·m²
CNR 4 short wave - upward
0
1600
W/m
2
CNR 4 short wave - downward
0
1600
W/m
2
CNR 4 long wave - upward
-600
200
W/m
2
CNR 4 long wave - downward
-200
600
W/m
2
Eppley PSP
0
1600
W/m
2
AMPBOX
4 20 mA