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Popular Campbell Scientific CNR4 Manual Pages
CNR4 Net Radiometer - Page 3
... or replacing (at Campbell's option) defective products, which have no warranty. Campbell's obligation under this warranty is limited to the limits extended by Campbell, and product specific training, is not liable for any products which shall be free from defects in the corresponding Campbell pricelist or product manual. Warranty
"PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC...
CNR4 Net Radiometer - Page 4
... clearly on products that may not be either emailed to repair@campbellsci.com or faxed to (435) 227-9106.
To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 227-9000. Campbell Scientific is :
CAMPBELL SCIENTIFIC, INC. Campbell Scientific reserves the right to refuse service on the outside of product receipt or is available from...
CNR4 Net Radiometer - Page 9
...Campbell Scientific applications engineer.
• Do not attempt to rotate the instrument using the CNR4, please study:
• Section 2, Cautionary Statements • Section 3, Initial Inspection • Section 4, Quickstart
2. Introduction
The CNR4 is a research-grade net radiometer that parts...the CNR4 is rugged, it is suspected, consult with the shipping company.
• The model number...
CNR4 Net Radiometer - Page 10
...avoid potential problems from shading.
4.2 Mounting
A mounting bracket kit, pn 26120, is h meters above the ground surface. To avoid shading effects and to promote spatial averaging, the CNR4 should ... as trees, buildings, or the mast or structure on which it is recommended that the CNR4 be cast on it at any other mounting structures.
3. FIGURE 4-1. It is mounted. Attaching...
CNR4 Net Radiometer - Page 11
... into the mounting block of the mounting bracket to properly secure the support arm so that appear after the word SENSOR on top of the ...the 26120 mounting bracket to rotate the instrument using the provided U-bolt (see FIGURE 4-2). Attaching the CNR4 onto the mounting rod (pn 26120) using the sensor's bubble level.
5.
Perform a coarse leveling of the bracket (see...
CNR4 Net Radiometer - Page 12
... pipe or crossarm and tripod/tower.
4.3 Use SCWin to Program Datalogger and Generate Wiring Diagram
The simplest method for programming the datalogger to measure the CNR4 is to use Campbell Scientific's SCWin Program Generator. CNR4 Net Radiometer
6. Open Short Cut and click on the back of the bracket.
7.
CNR4 Net Radiometer - Page 16
... UV-radiation. Specifications
Features:
• Research-grade performance
• Meniscus dome on the sensors
Compatible Dataloggers:
CR1000 CR3000 CR5000
8
The CNR4 design is such that both the short-wave solar radiation, 0.3 to 2.8 μm, and the longwave far infrared radiation, 4.5 to 42 μm. An optional ventilation unit with Campbell Scientific dataloggers. The...
CNR4 Net Radiometer - Page 22
... 4489
14 TABLE 7-1. both have identical accuracy.
CNR4 Net Radiometer
For the pyrgeometer only E = V/C + 5.67•10-8•T4
In this equation, C is the sensitivity of the sensor.
(7-2)
NOTE
T is recommended when using Half-Bridge Measurement instruction on Campbell Scientific dataloggers. Resistance values versus CNR4's thermistor temperature in Celsius or Fahrenheit. Using...
CNR4 Net Radiometer - Page 26
The CNR4 sensor with two sets of cables labelled SOLAR and TEMP, as shown in FIGURE 7-1.
The two cables, ...calculated according to Equation 7-2. The terms with T cancel each other out.
7.2 Wiring
The CNR4 has two outputs for short-wave radiation, two outputs for the thermistor in this manual is applicable only if the CNR4 and the cables were purchased from Campbell Scientific, Inc.
CNR4 Net Radiometer - Page 40
... manufacturer recommends replacing the drying cartridge every 6 to obtain an RMA number for a continuous outdoor use a clear day. Additional drying cartridges, pn 26006, can be recalibrated every two years. The materials used in the pyranometer and the pyrgeometer are greater than 6%, the sensor should be purchased from Campbell Scientific.
32 The CNR4 should be...
CNR4 Net Radiometer - Page 41
... from Campbell Scientific. Drying Cartridge Rubber Gasket
CNR4 Net Radiometer
FIGURE 9-1. Replacing the drying cartridge
9.4 Replacement Parts
The following is the list of 5). CSI Part Number CNR4CBL1-L CNR4CBL2-L CNF4CBL-L 26006 26010
Description Replacement CNR4 Solar Cable
Replacement CNR4 Temperature Cable
Replacement CNF4 Cable
Replacement Drying Cartridges
Replacement Fan Filter (Set of...
CNR4 Net Radiometer - Page 48
...not to switch the power on and off. The ventilator draws additional 5 watts of the Campbell Scientific dataloggers. Do not use an external relay to an analog ground near the measurement inputs). ...simultaneously power the heater and ventilator. Refer to Section 4.2 of the CR1000 and CR3000 manual for details on the heater only when the light level falls below
Clock and relay available...
CNR4 Net Radiometer - Page 53
... of the SW12 channel and use , and tie them around the TEMP cable using the CNR4 sensor with the CNF4 heater/ventilator while making the differential measurement. Appendix B. CNF4 Heater/Ventilator...not in use an external relay to the 12V channel instead of the CR1000 and CR3000 manual for details on and off. CR1000 and CR3000 Datalogger Connections for Differential Measurement with Heater...
CNR4 Net Radiometer - Page 54
... (thin black)
'gnd
jumper to 2L
'
'3H
CNR4 Pyrgeometer Upper signal (grey)
'3L
CNR4 Pyrgeometer Upper signal reference (yellow)
'gnd
jumper to 3L
'
'4H
CNR4 Pyrgeometer Lower signal (brown)
'4L
CNR4 Pyrgeometer Lower signal reference (green)
'gnd
jumper to switch the power on and off by manually setting the flag(1) and flag(2) high or low, respectively...
CNR4 Net Radiometer - Page 57
... with a small flathead screw driver or by prying it straight out. the heater will be around 15 Ω (cable resistance should add about 0.026 Ω per each foot of cable).
The filter can be cleaned with warm clean water, or can purchase the replacement filters, pn 26010, from Campbell Scientific. If the correct resistance...
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