RA012 component net-radiation sensor
| RA01 specifications: General |
|
| Temperature range | -40 to +80 °C |
| Range | 0 to 2000 Wm-2 |
| Temperature sensor | Pt100 |
| Temperature sensor | users own preference can be plugged in |
| Pyranometer (SW): | |
| Pyranometer ISO classification | second class |
| Spectral range | 305 to 2800 nm |
| Calibration traceability | WRR |
| Pyrgeometer (LW): | |
| Spectral range | 4500 to 50000 nm |
| Calibration traceability | ITS 90 |
| Window heating offset @ 1000 Wm-2 solar radiation | <15 Wm-2 |
| heating power | 1.6 Watt @ 12VDC |
Figure 2 RA01 top view. Standard cable length is 5 m. Cable can be installed / replaced by the user. Attachement to a 1 inch tube (2), not included, is extremely easy, levelling possibilities are included. Dimensions in mm.
RA01 is a 2-component radiation sensor that is used for scientific-grade energy balance studies. The instrument has separate measurements of solar (Short Wave or SW) and Far Infra-Red (Long Wave or LW) radiation. Combined with estimates of SW solar albedo- and of surface temperature, this instrument can also be used for estimation of net-radiation. The advantage in this approach are reduction of costs and independence from local surface properties.
A nice clear print of the original product brochure.
RA01 serves to measure 2 separate components of the surface radiation balance. Working completely passive, using a thermopile sensors, generates 4 small output voltage proportional to the incoming solar SW and LW flux. The solar radiation sensor is also called pyranometer, the LW sensor is also called pyrgeometer. For calculation of sky- and surface temperature, a Pt100 temperature sensor is included in the pyrgeometer.
Figure 1 RA01 2-component radiation sensor. SW solar radiation sensor or pyranometer (1), LW Far Infra-Red radiation sensor or pyrgeometer (2), radiation shield (3), levelling assembly for x- and y axis (4, 5 and 7).
In order to avoid deposition of dew, the pyrgeometer may be heated. A 2-axis levelling assembly is included.
The RA01 cable can easily be installed or replaced by the user.
Options
- Additional cable length x metres (add to 5m)
- Upgrade to NR01
See Also
- NR01 4-component net-radiameter, which is a double side version of RA01