Our CR200, CR205, CR210, and CR215 dataloggers are small measurement and control devices (see previous newsletters). We have several new peripherals to use with our CR200- series dataloggers:
The CR200-series logger requires a protective enclosure when it is exposed to dust, water, sunlight, or environmental pollutants. The ENC200 (6.7" x 5.5" x 3.7", 17 x 14 x 9.5 cm internally) can house a CR200 series logger and the small #16869 Sealed Rechargeable Battery. The logger and battery are mounted on an internal backplate. The outside of the enclosure has one power connector and one antenna connector that allow you to connect a solar panel/charger and an antenna without opening the enclosure door. Five individual compression fittings are provided for sensor cable entry. A larger enclosure, such as our ENC 10/12 or ENC 12/14, is required to mount a barometric pressure sensor or a larger battery with the logger.
The #16869 battery is a 12 Vdc, 0.8 Ahr sealed rechargeable battery that should be float-charged with a solar panel or ac power. The battery connects to the logger's terminal strip via the battery's power and ground wire and a connector that is shipped with the battery.
Two solar panels, the SP1.6 (#15677) and SP5 (#16851), are offered for use with our CR200-series dataloggers. The SP1.6 Solar Panel produces 1.6 watts of power at a 20 V peak, and the SP5 Solar Panel produces 5 watts of power at a 17.1 V peak. Solar panels are typically used to floatcharge the sealed rechargeable battery. Both solar panel models include a cable that plugs into the ENC200's power connector.
The #15988 and #16876 Wall Chargers differ only in their cables. The #15988 charger has a 7 ft cable that connects directly to the logger's terminal strip, and the #16876 charger has a 20 ft cable that plugs into the ENC200's power connector. Both chargers provide power to the CR200-series loggers while float-charging the battery. Thechargers convert 90 to 264 Vac (47 to 63 Hz) to 18 Vdc @ 1 A.
The CR200-series loggers can measure our standard barometric pressure precipitation, relative humidity, and wind speed and direction (except CSAT3) sensors. However, the CR200-series loggers cannot make differential voltage measurements or measure sensors with negative output voltages. The CR200- series loggers have a single 0 to 2.5 voltage range with limited resolution for sensors with small voltage outputs. Therefore, some of our standard sensors such as our solar radiation sensors cannot be measured by these loggers.
Campbell Scientific designed the 109 Temperature Probe and CS625 Water Content Reflectometer specifically for the CR200-series loggers. The 109 incorporates a thermistor similar to our 107 and 108 temperature probes. The 109 has an output range our CR200-series dataloggers can measure. The CS625 is a modified version of our CS616 Water Content Reflectometer which outputs a 0 to 3.3 V square wave (the CS616 outputs a ±0.7 V square wave).
The CR200-series loggers can also measure SDI-12 sensors such as our CS408 Submersible Pressure Transducer, CS445 Submersible Pressure Transducer, and SR50 Ultrasonic Distance Sensor. The CS408 uses a piezoresistive sensor with an isolated stainless steel diaphragm housed in a welded stainless steel or titanium case. Available measurement ranges are 0-5, 15, 30, 50, and 100 psig. The CS445 uses an isolated silicon strain gauge sensor housed in a stainless steel package. Available measurement ranges are 0-5, 15, 30, 50, and 100 psig.
Campbell Scientific offers the following antennas that are compatible with our 900 MHz dataloggers (CR205, CR210) and radios (RF400, RF410):
The following antennas are compatible with our 2.4 GHz CR215 datalogger and RF415 Spread Spectrum Radio:
* When using antennas outdoors, a surge protector is recommended.