Description

LL-BARO Barometric Pressure Logger

The LL-BARO is designed for use above the waterline to record the atmospheric pressure data and should never be submerged in water. The collected readings can be used for compensating readings collected by any of the Absolute Leveline sensors in a 10Km radius. The LL-BARO offers a maximum logging rate of once per minute with a storage capacity of 150,000 records and up to 10 year battery life. Level data obtained from submerged Absolute logger can be automatically corrected for in the LeveLink Software. This compares the barometric pressure reading during the same period with readings collected by Absolute Leveline Sensors to obtain pressure compensated water depth readings.

Features

• Set logging rates in hours and minutes.
• Produce Google Earth files, Excel files and text reports at the press of a button
• Displays number of recordings saved in memory and the number of available data points
• Displays the remaining battery of the logger

The LL-BARO connects directly to a PC  using the LeveLine PC Kit (Part No. LL-PC-KIT). Connect one end of the cable to the LL-BARO, aligning it as shown in the image below, and the other end to a spare USB port on your PC, or laptop.

Logging can be set as fast as once a minute, or up to every five days. Every 15 minutes to 1 hour would be the normally recommended interval for barometric pressure as these tend to alter reasonably slowly, unless storm conditions are expected. In this case, an shorter event checking interval can be set, but this will reduce the battery life. If you plan to correct water pressure data logged using an ABS (absolute) type Level Logger, you should load your water pressure data into LeveLink software under the Level Logger Data tab. You should then load your associated air pressure data into LeveLink under the Baro Logger Data tab.

LL-BARO Specifications

All LeveLine Baro Loggers are factory calibrated at three separate pressure points across their pressure range, at two temperatures, 5°C and 25°C. The data produced by this calibration procedure is used to construct a three dimensional calibration curve (surface), which is stored in each Probe’s memory and subsequently used to automatically correct temperature and pressure readings prior to output. For optimum performance, factory re-calibration is recommended every 12-18 months, but is dependent on your own requirements. The date at which your LeveLine Logger was last calibrated is shown in the ‘LeveLine Status’ box on the Setup tab of the LeveLink PC software.