Intro to Solinst Levelogger and Software

The Levelogger is designed to measure groundwater and surface water levels and temperature. The Levelogger Gold and Barologger Gold replace the previous LT Leveloggers. The LTC Levelogger is still available to monitor electrical conductivity as well. Previous models included an ‘L’ (level only) version and a very early unit with only the ‘Levelogger’ designation. This was also a level only model. The Levelogger Gold measures both temperature and temperature compensated water levels more accurately than the older LT. The Barologger Gold uses internal mathematics based on air pressure rather than water pressure, to offer further accuracy. The LTC Levelogger measures temperature, temperature compensated water levels and electrical conductivity or specific conductance. Figure 1.1 outlines the specifications of the Leveloggers Gold. Figure 1.2 details specifications of the LTC Leveloggers. Leveloggers are programmed using either a desktop or laptop computer, or a Leveloader Gold. Computers connect to the Levelogger via an optical reader cable. The optical reader cable uses an infrared data reader/port connected to the Levelogger and an RS232 or USB Com Port to communicate information to and from the Levelogger and computer.

Levelogger Gold Specifications
Level Sensor:	Piezoresistive Silicon in 316L Stainless Steel
Accuracy (Typical):	0.05% net FS
Accuracy (Max Error):	0.1% net FS
Stability of Readings:	Superior, low noise, 6 times better than previously
Resolution:	0.002 to 0.0006% FS
Normalization:	Automatic Temp Compensation
Temperature Sensor:	Platinum Resistance Temperature Detector
Temp. Sensor Accuracy:	± 0.05°C
Temp. Sensor Resolution:	0.003°C
Temp. Comp. Range:	-10 to +40°C
Response Time:	< 1 minute
Battery Life:	10 Years - based on one reading/min
Clock Accuracy:	± 1 minute /year
Operating Temperature:	-20°C to 80°C
Maximum # Readings:	40,000 of level and temperature
Memory:	Superior reliability EEPROM Slate, rollover and redundant backup of last 1200 readings
Communication:	Optical Infra-Red Interface, Serial at 9600 Baud, Conversion to RS232 or USB Computer Connection
Size:	7/8" x 6" (22 mm x 154 mm)
Weight:	6.3 oz (179 grams)
Backwards Compatibility:	Full
Corrosion Resistance:	Zirconium Nitride (ZrN) Coating
Other Wetted Materials:	316-L Stainless Steel, Delrin, Viton
Sampling Modes:	Linear, Event and User-Selectable with 30 separate line items
Measurement Rates:	0.5 sec to 99 hrs
Barometric Compensation:	Software Wizard and one Barologger in local area (approx. 20 miles/30 km) radius

Figure 1.1

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Models	Full Scale (FS)	Water Fluctuation Range	Accuracy (typical)	Resolution
Barologger		Air Only	± 0.003 ft., 0.1 cm	0.002% FS
F15, M5	16.4 ft., 5 m	13.1 ft., 4 m	± 0.010 ft., 0.3 cm	0.001% FS
F30, M10	32.8 ft., 10 m	29.5 ft., 9 m	± 0.016 ft., 0.5 cm	0.0006% FS
F60, M20	65.6 ft., 20 m	62.3 ft., 19 m	± 0.032 ft., 1 cm	0.0006% FS
F100, M30	98.4 ft., 30 m	95.1 ft., 29 m	± 0.064 ft., 1.5 cm	0.0006% FS
F300, M100	328.1 ft., 100 m	325 ft., 99 m	± 0.164 ft., 5 cm	0.0006% FS

Figure 1.2

Table of Contents

1 Introduction to Solinst Levelogger and Software

This chapter also describes several important technical specifications of the Levelogger, its construction and design, factory and user calibration procedures, and the computer system requirements to operate the Levelogger software and communicate with the Levelogger.

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