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The BaroTROLL® is a low-cost, self-contained logger that measures barometric pressure. It contains highly precise barometric and temperature sensors, a data logger, and internal power in a 18.3mm (0.72 in) diameter housing. Our low-owered system practically eliminates the need to change batteries and guarantees long-term operation. Alternatively, the unit can be powered with external power. System integration is a snap with built-in RS-485/232 Modbus, SDI-12, and 4-20mA communications.
The BaroTROLL® is typically used in conjunction with one or more of the non-vented Level TROLL® instruments to compensate for changes in water level due to barometric fluctuations. Readings from the BaroTROLL® can be automatically subtracted from data collected by a Level TROLL®. Due to its small size, it can be installed at the surface or inside the well casing--even in 25mm (1 in) wells! Built entirely from rugged titanium and welded to eliminate o-ring seals, you can have total confidence in harsh environments.
Applications:
- Barometric pressure monitoring
- Temperature monitoring
- Atmospheric research
Features & Benefits:
- Barometric pressure, temperature & data logging in a 18.3mm (0.72 in) OD -- Fits in a 25mm (1 in) well.
- Ultra-rugged, all-titanium design -- Perfect for corrosive sites.
- TIG-welded seals -- Prevents flooding of instrument.
- Ultra-low power system guarantees 5 years or 2-million readings -- Forget about changing batteries or running out of power.
- Uses external battery or line power -- Never run out of power.
- Sealed Twist-Lock hanger -- 100% reliability
- Easy-to-use Win-Situ® software -- Get the data you need fast! Large, sizable display that's easy to see from a distance.
- Extremely accurate sensors -- Record minute changes in barometric pressure and temperature.
- Data saved by sites not files -- Collect and save information by site automatically. No need to transfer data later.
- Easy-to-read memory and battery gauges -- Know exactly how much power is left.
- Modbus, SDI-12, and 4-20mA -- Provides for easy connections to existing and online systems.
- Specify start and stop times for logging -- Collect the data you need up to the date you want and no more.
- User-friendly Wizards guide every step -- Reduces complicated steps and the need for tedious manuals.
- -20 to 80C temperature range -- Use for research and applications with higher temperatures.
- 100,000 data points of memory (1 MB) -- Reduces the interval between data collection.
- CE and FCC approved -- Prevents susceptibility to outside emission interference and transient electrical surges.
- Ability to "undelete" files from the unit -- Retrieves accidentally deleted data.
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General
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Operating temperature range
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-20 to 80C
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Dimensions
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18.3 mm (0.72 in) OD, 21.6cm (8.5 in) long
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Weight (includes backshell)
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0.197 kg (0.43 lb)
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Output options
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Modbus (RS-485/232), SDI-12, 4-20mA
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Housing material
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Titanium
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Nose cone material
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Black Delrin®
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Power
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Internal battery
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3.6V Lithium
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Typical life*
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5 yrs or 2-million readings
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External power
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8-36VDC
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*Whichever comes first. See battery guide for details.
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Logging
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Memory / data points**
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1 MB / 100,000+
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Logging Rate
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User selectable from 1 min -- 49 days
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Modbus
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2 per sec
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SDI-12
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2 per sec
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4-20 mA Update Rate
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2 per sec
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Measurement Types
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Linear
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**data record = time and date plus one single parameter logged
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Barometric Sensor
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Silicon strain gauge
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Type
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Non-vented
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Material
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Titanium
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Accuracy***, FS
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+/-0.05% (at 15C)
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FS = Full Scale
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+/-0.1% (-5 to 50C)
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+/-0.25% (-20 to -5 & 50 to 80C)
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*** Accuracy with 4-20mA output option: +/-0.25% typical
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Resolution
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0.005% FS or better
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Range
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Non-vented: 0 to 1.14 bar (0 to 16.5 psi)
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Units of Measure - Pressure
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psi, KPa, bar, mbar, mmHg, cmH2O, inH2O
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Temperature Sensor
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Material
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Silicon
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Accuracy
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+/-0.1C
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Resolution
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0.01C or better
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Range
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-20 to 80C (-4 to 176F)
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Warranty: The BaroTROLL comes with a one-year warranty.
Minimum System Requirements: 400MHz Pentium® II, 128MB RAM, 100MB free disk space, Internet Explorer® 6.01 or higher, and Windows® 2000 Professional SP2 or better, or Windows XP Professional SP2 or better, or Windows Vista®, CD ROM Drive, Serial or USB port.
 Download In-Situ® Modbus Networking Specifications | www.modbus.org
Delrin is a registered trademark of E.I. duPont de Nemours and Company, USA and other countries.
Pentium is a registered trademark of Intel.
Windows, Internet Explorer, and Windows Vista are registered trademarks of Microsoft Corporation, USA and other countries.
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