Submersible Pressure Transducer and Datalogger Combination FEATURES: Easy to operate and install Palm Pilot software simplifies data collection Exports data directly to spreadsheets for analysis No need to remove sensor for data collection or battery change Highly accurate water level measurements Multiple level ranges available from 3' to 250' User programmable date, recording interval, and site name Real-time data readout Unique 0-3' range for shallow water Wet-wet transducer eliminates vent tube concerns Automatic barometric pressure and temperature compensation Product Description Global Water's WL15X now includes Palm Pilot software to simplify field data collection Global Water's WL15X Water Level Logger provides a datalogger with a submersible pressure transducer for remote monitoring and recording of well depth measurements and water pressure data. This highly reliable and accurate water level recorder records 24,400 readings and is programmable from one reading per second to one reading per day. Ranges of 0-3', 0-15', 0-30', 0-60', 0-120' and 0-250' are available. A 25' cable is standard, and optional cable lengths are available up to 500'. The Water Level Recorder's datalogger is housed in a weather-resistant cylindrical enclosure that can slip inside a 2-inch pipe. The data recorder is easily adapted with standard hardware for well head mounting or other installations. The datalogger enclosure also houses an easily replaceable 9 VDC battery, which powers the Water Level Logger and level sensor for one year. Purchase of the WL15X includes Windows-based datalogging software, which allows easy upload of recorded data to standard spreadsheet programs on a PC computer. The Water Level Logger's level sensor is fully encapsulated with marine-grade epoxy so that moisture can never leak in or work its way down the vent tube to cause drift or level sensor failure (as is the case with other pressure sensors). The submersible pressure transducer uses a unique, highly flexible silicon diaphragm to interface between water and the sensing element. This silicon diaphragm protects the level sensor's electronics from moisture and provides a submersible water level transducer with exceptional linearity and very low hysteresis. The design of Global Water's water level sensor eliminates the issues associated with metal foil diaphragms, which tend to crinkle and stretch out over time causing drift, linearity, and hysteresis problems. The water level sensor is also protected by a stainless steel micro-screen cap, which makes fouling with silt, mud, or sludge virtually impossible. Specifications Submersible Pressure Transducer Sensor Element: Silicone Diaphragm, Wet/Wet Transducer Pressure Range: 0-3', 0-15', 0-30', 0-60', 0-120', 0-250' Linearity and Hysteresis: ±0.1% FS Overpressure: 2 x full scale range Burst Pressure: 10 x full scale range Accuracy: ±0.1% of full scale at constant temperature, ±0.2% over 35°F to 70°F range Compensation: Uses dynamic temperature compensation 30-70 F. Automatic barometric pressure compensation Housing: Material: 304L Stainless Steel, SS microscreen (hundreds of holes to prevent fouling), electronics are fully encapsulated in marine grade epoxy, guaranteed not to leak Size: Up to 7" long x 3/4" diameter (small enough for a 1" well) WL15X Cable: Conductors: 4 each 22 AWG Jacket Material: 87A shore hardness Polyethylene Vent Tube Material: HD Polyethylene Shield: Aluminum Mylar Outer Diameter: 3/16" Temperature Range: -22° to +185°F Weight: 0.7 oz/ft Length: Standard 25' (up to 500') WL15X Water Level Data Logger: Memory: Non-volatile flash memory Battery: 9V Lithium Battery Life: Up to 3 years (depending on recording intervals) Backup Battery: 3V Lithium Resolution: 12 bit Moisture Protection: Acrylic coat (prevents damage to electronics from condensation) Storage Capacity: 24,400 time and date stamped data points Recording Rate: Linear fixed intervals from 1-256 seconds, 1-256 minues, 1-256 hours, or 1-256 days; Logarithmic test (for pump and slug tests) Data Overwrite: Select memory wrap or unwrap (unwrap will stop logging data once memory is full) Clock: Synchronizes to the time and date of user's computer Clock Accuracy: 0.0015% Clock Format: Month/Day/Year Hour/Minute/Second Enclosure: 1 7/8" diameter x 12" length (fits inside a 2" well), stainless steel UV protected PVC vented for barometric pressure compensation Temperature: -40° to +170°F Humidity: 0-95% non-condensing Weight: 1.6 lbs (with battery and 25' cable) Communication: RS232 (cable provided) Communication: 38,400 kbs Data Transfer Rate: 2MB/4 minutes File Type: Comma Separated Value (.CSV) Global Water Software Compatible with Microsoft's Windows 95, 98, ME, 2000, NT, and XP Windows and Excel are trademarks of the Microsoft Corporation Tabular Display/Printout Data in standard spreadsheet format RS232 cable included (connects logger's data port to PC) Software Information The Water Level Logger includes Global Water Datalogger Software, Windows-based software that provies many useful features, such as real-time readout, measurement interval and engineering unit selection, station ID setting, and sensor calibration. The software makes accessing stored data and setting options easy. Data downloaded from the Water Level Logger can easily be opened in any PC spreadsheet program for analysis and graphic presentation. Globlal Water's Datalogger Software will run on a PC-type laptop or desktop computer running Windows 95 or later. To communicate with the Water Level Logger, a computer must be equipped with a standard RS232 serial communication port. Purchase of the Water Level Logger includes a RS232 cable (for communication between the logger and your computer). Installation Overview The Water Level Logger's pressure sensor may be placed slightly below the lowest expected water level. Level ranges of 0-3', 0-15', 0-30', 0-60', 0-120' and 0-250' are available. When ordering, select the level sensor range that will cover the maximum water level change (this is not necessarily the total depth of water). Selecting the smallest water level range possible will ensure the greatest accuracy. The Water Level Logger's datalogger is housed in an enclosure that is designed to slip inside a 2-inch pipe and be completely hidden with a standard or locking well cap. For monitoring groundwater, the water level recorder can be installed in a PVC pipe with the datalogger enclosure's rim resting on the pipe's edge. For monitoring surface water, the water level logger can be installed in a a protective stilling constructed of PVC pipe. Applications The Global Water Level Logger can be used for stream and river gauging, flood analyses, monitoring hydrant pressure, monitoring irrigation canals, groundwater monitoring, infiltration/inflow studies, lake and wetland analyses, landfill/hazardous site analyses, pump tests, surface water monitoring, sewer flow monitoring, stormwater studies, weirs and flumes, tide gauge measurements, and much more . . . Your choice of ranges: 0-3' and 0-15', the most popular, are featured here. Also available by special order are 0-30', 0-60', 0-20', and 0-250'ranges. Comes with 25' of cable. See below for the 0-15' model with 50' cable. Global Water WL-15X Water Level Logger glwawlwalelo$775.00Range: WL-3X-25 0-3'WL-15X-25 0-15' Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.