WL15X Water Level Logger

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 charge
  • 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 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.

Global Water's WL15X now includes Palm Pilot software to simplify field data collection

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 the submersible pressure 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 has automatically barometric compensation due to the attached vent cable and 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:  Marine Grade Polyurethane
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 data logger 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 . . .