Campbell NL100 Bedienungsanleitung PDF herunterladen (Seite 4)

November 2005, ARM-TR-069

• Campbell Scientific NL-100 Ethernet Device.

• Allied Telesyn AT-MC13 Media Converter.

• Dell Computer. The computer is configured to conform to Atmospheric Radiation

Measurement (ARM) Program Core personal computer (PC) standards.

4. Power Requirements

• Muffin fans use 110V AC.

• Data logger uses 12V DC through an AC/DC converter plugged into the GFCI.

• Probes use 12V DC supplied by the data logger. The Vaisala probes require < 4 mA; the

Rotronics probes < 10 mA.

• Enclosure heater uses 110V AC

• Enclosure cooling fan uses 110V AC

• Micro-switch uses 5V DC supplied by the data logger.

• NL-100 is powered by 12V from the data logger.

• The AT-MC13 Media converters uses 12V DC through an AC/DC converter plugged into

the GFCI.

5. Safety Considerations

Electrical safety is the largest concern when it comes to the SURTHREF System. Power for the

system is supplied by 110VAC that enters the enclosure and runs through a switch that controls

power to all devices (See Appendix G, Wiring Diagrams).

Work on any component that is powered by 110VAC must

be done while de-energized. The

muffin fans that are used to aspirate the temperature and RH probes in the polypropylene

enclosure also use 110VAC, any work on these fans must

also be done while de-energized.

Other safety considerations are insects, rodents and pinching of appendages in the Stevenson

Screen openings and data logger enclosure.

6. Corrective Maintenance

The SURTHREF System is designed to require a minimum amount of routine maintenance. If

the system does not operate properly or conform to the routine checks, the following steps should

be taken.

1. Onsite check. See section entitled “Troubleshooting Techniques” on page 5 of this manual.

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