Campbell NR-Lite, Instruction Manual, Page: 18 / 20

NR-LITE Net Radiometer
12
9: Z=X (P31)
1: 2 X Loc [ Rn_obs ]
2: 3 Z Loc [ Rn_cor ]
10: End (P95)
11: If time is (P92)
1: 0 Minutes (Seconds --) into a
2: 60 Interval (same units as above)
3: 10 Set Output Flag High (Flag 0)
12: Real Time (P77)
1: 1220 Year,Day,Hour/Minute (midnight = 2400)
13: Average (P71)
1: 1 Reps
2: 3 Loc [ Rn_cor ]
14: Average (P71)
1: 1 Reps
2: 1 Loc [ Wspd_m_s ]
* Proper entries will vary with program and input channel assignments.
** 25 mV range for CR10(X) and CR510, the 50 mV range for CR23X, and the 15 mV range for
21X and CR7.
6. Maintenance
The radiometer is an ‘all weather’ instrument and is very stable, but should be
handled with care. It requires little periodic maintenance, apart from cleaning
the sensor surfaces carefully with a soft cloth using water or alcohol.
The NR-LITE should be recalibrated every two years. Contact CSI for an
RMA number before returning the sensor for recalibration.
7. Troubleshooting
7.1 Checking Sensor Operation
To effectively check the instrument’s operation, you will need:
1. The NR-LITE itself
2. A voltmeter, range 0 to 50 mV, with an input impedance greater than
5000 Ohms
3. A light source
4. A table or bench
Position the radiometer so that its downward facing sensor is about 10 mm
(0.4”) above a flat surface (table or bench), and the upwards facing sensor is
facing the light source (lamp). Do not touch the sensor head itself, as this will