The LL-BARO Logger is powered by an Internal 3.6V Lithium Battery, or 6-24vDC externally powered and records atmospheric pressure in the range of 0 to 1.15 Bar. Logging rate from 1 minute to every 5 days and internal memory for 150,000 readings. The unit can also provide RS485 Modbus (5 second update rate), or SDI-12 (up to 1 second update), readings for connection to an external logger. Titanium body with Delrin nose cone in a 22mm diameter x 186mm housing with total weight of 160g. Operating Temperature range -20 to +80°C.
£390.00
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.
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.
| GENERAL | |
|---|---|
| Temperature ranges | Operational: -20-80°C, Storage: -40-80°C, Compensated: -20-80°C |
| Diameter | 22mm |
| Length | 186mm |
| Weight | 160g |
| Materials | Titanium body, Delrin nose cone |
| Output options | RS485 Modbus, SDI-12, Aquaread proprietary |
| Battery type & life | 3.6V Lithium, up to 10 years (Depending on logging rate) |
| External power | 6-24vDC |
| MEMORY & OUTPUT RATE | |
| Memory size | 2.0MB |
| Data records | 150,000 readings |
| Log types | Linear, Event & User-Selectable Schedule with Future Start, Future Stop, Deploy Start and Real Time View |
| Fastest logging rate | 1 per minute |
| Fastest Modbus output rate | 5 per second |
| Fastest SDI-12 output rate | 1 per second |
| Real-time clock | Accurate to 1 second/24-hr period (±6 minutes/year) |
| SENSOR | |
| Type / Material | Piezoresistive ceramic |
| Range (Absolute) | 0 to 16.7psi, 0 to 1.15 Bar |
| Maximum pressure | Max 2x range, Burst 2.5x range |
| Accuracy (FS) | ±0.1% FS |
| Resolution | 0.1mBar |
| Units of measure | Pressure: mBar (psi, kPa, Bar, mmHg, inHg, cmH2O, inH2O. Available in Levelink |
| TEMPERATURE SENSOR | |
| Accuracy & resolution | ±0.1°C, 0.01°C |
| Units of measure | Celsius (fahrenheit available in Levelink) |
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.
LL-EXT-TEL-AD
£100.00
LL-PC-KIT
£170.00
LL-USB-EXT-AD
£75.00
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