Campbell Scientific LLAC4 4-Channel Low-Level AC-Conversion Module CR loggers 2x

  

Listing is for (2) units. The LLAC4 is a small peripheral that you can use to increase the number of low-level ac signals that your data logger can monitor. The LLAC4 is often used to measure up to four anemometers, and it is especially useful for wind profiling applications.

The LLAC4 works only with data loggers whose control ports can accept high frequency pulses. The CR23X has four control ports that can be used (5, 6, 7, and 8); the CR200X-series control ports are compatible but are limited to inputs of 1 kHz. The LLAC4 typically measures anemometers.

Compatible anemometers include the Wind Monitors, 03002 Wind Sentry Set, and 03101 Wind Sentry Anemometer. The 014A Anemometer and 034B Windset are not compatible. The LLAC4 can also measure other sensors that output pulse counting signals.