Deskripsi
The Levelogger Edge records highly accurate groundwater and surface water level and temperature measurements. It combines a pressure sensor, temperature detector, 10-year lithium battery, and datalogger, sealed within a 7/8″ x 6.25″ (22 mm x 159 mm) stainless steel housing with Titanium based PVD coating.
The Levelogger Edge measures absolute pressure using a Hastelloy pressure sensor, offering excellent durability and reliability. Combined with the Titanium based PVD coating, both elements have high corrosion resistance in harsh environments, allowing stable readings in extreme pressure and temperature conditions. The Hastelloy sensor can withstand 2 times overpressure without permanent damage.
The Levelogger Edge features a wide temperature compensated pressure range (0 to 50ºC, -10 to 50ºC for Barologger Edge), and rapid thermal response time. The Levelogger Edge has high resolution and an accuracy of 0.05% FS. The convenient Barologger Edge provides the easiest and most accurate method of barometric compensation.
Features
- 0.05% FS Accuracy
- Corrosion resistant Titanium based PVD coating
- Robust Hastelloy pressure sensor
- Accurate temperature compensation
- Memory for up to 120,000 readings
- Basic and advanced data compensation options
| Level Sensor: | Piezoresistive Silicon with Hastelloy Sensor |
| Accuracy: | ± 0.05% FS (Barologger Edge: ± 0.05 kPa) |
| Stability of Readings: | Superior, low noise |
| Resolution: | 0.002% FS to 0.0006% FS |
| Units of Measure: | m, cm, ft., psi, kPa, bar, ºC. ºF (Barologger Edge: psi, kPa, mbar, ºC, ºF) |
| Normalization: | Automatic Temperature Compensation |
| Temp. Comp. Range: | 0º to 50ºC (Barologger Edge: -10 to +50ºC) |
| Temperature Sensor: | Platinum Resistance Temperature Detector (RTD) |
| Temp. Sensor Accuracy: | ± 0.05ºC |
| Temp. Sensor Resolution: | 0.003°C |
| Battery Life: | 10 Years – based on 1 reading/minute |
| Clock Accuracy: | ± 1 minute/year (-20ºC to 80ºC) |
| Operating Temperature: | -20ºC to 80ºC |
| Maximum # Readings: | 40,000 readings FRAM memory, or up to 120,000 using linear data compression |
| Memory Mode: | Slate and Continuous |
| Communication: | Optical Infrared Interface. Conversion to RS-232, USB, SDI-12. Serial at 9600 bps, 38,400 bps with USB |
| Size: | 7/8″ x 6.25″ (22 mm x 159 mm) |
| Weight: | 4.6 oz. (129 grams) |
| Corrosion Resistance: | Titanium based PVD coating |
| Other Wetted Materials: | Delrin®, Viton®, 316L stainless steel, Hastelloy, Titanium based PVD coating |
| Sampling Modes: | Linear, Event & User-Selectable with Repeat Mode, Future Start, Future Stop, Real-Time View |
| Measurement Rates: | 1/8 sec to 99 hrs |
| Barometric Compensation: | Software Wizard and one Barologger in local area (approx. 20 miles/30 km radius) |
| Models | Full Scale (FS) | Accuracy | Resolution |
|---|---|---|---|
| Barologger | Air only | ± 0.05 kPa | 0.002% FS |
| M5 | 5 m (16.4 ft.) | ± 0.3 cm (0.010 ft.) | 0.001% FS |
| M10 | 10 m (32.8 ft.) | ± 0.5 cm (0.016 ft.) | 0.0006% FS |
| M20 | 20 m (65.6 ft.) | ± 1 cm (0.032 ft.) | 0.0006% FS |
| M30 | 30 m (98.4 ft.) | ± 1.5 cm (0.064 ft.) | 0.0006% FS |
| M100 | 100 m (328.1 ft.) | ± 5 cm (0.164 ft.) | 0.0006% FS |
| M200 | 200 m (656.2 ft.) | ± 10 cm (0.328 ft.) | 0.0006% FS |
Levelogger Setup
Programming Leveloggers is extremely intuitive. Simply connect to a PC using an Optical Reader or PC Interface Cable. All in one screen fill in your project information and sampling regime. Templates of settings can be saved for easy re-use.
The Levelogger time may be synchronized to the computer clock. There are options for immediate start or future start and stop times. The percentage battery life remaining and the amount of free memory are indicated on the settings screen.
Leveloggers can also be programmed with a sampling regime and start/stop times using the Solinst Levelogger App on your smart device.
Convenient Sampling Options
Leveloggers can be programmed with linear, event-based, or a user-selectable sampling schedule. Linear sampling can be set from 1/8 second to 99 hours. The Levelogger Edge can be programmed with compressed linear sampling, which increases the Levelogger memory from 40,000 to up to 120,000 readings.
Event-based sampling can be set to record when the level changes by a selected threshold. Readings are checked at the selected time interval, but only recorded in memory if the condition has been met. A default reading is taken every 24 hours if no “event” occurs.
The Schedule option allows up to 30 schedule items, each with its own sampling rate and duration. For convenience, there is an option to automatically repeat the schedule.
Data Download, Viewing and Export
Data is downloaded to a PC with the click of a screen icon. There are multiple options for downloading data, including ‘Append Data’ and ‘All Data’. The software also allows immediate viewing of the data in graph or table format using the ‘Real Time View’ tab.
The level data is automatically compensated for temperature, and the temperature data is also downloaded. Barometric compensation of Levelogger data is performed using the Data Wizard, which can also be used to input manual data adjustments, elevation, offsets, density, and adjust for Barometric efficiency.
The software allows easy export of the data into a spreadsheet or database for further processing.
The Solinst Levelogger App also allows you to view and save real-time, or logged data right on your smart device.
Helpful Utilities
The ‘Self-Test Diagnostic Utility’ can be used in case of an unexpected problem. It checks the functioning of the program, calibration, backup and logging memories, the pressure transducer, temperature sensor and battery voltage, as well as enabling a complete Memory Dump, if required.
A firmware upgrade will be available from time to time, to allow upgrading of the Levelogger Edge, as new features are added.
The Levelogger App Interface uses Bluetooth® technology to connect your Levelogger to your smart device. With the Solinst Levelogger App, you can download data, view real-time data, and program your Leveloggers. Data can be e-mailed from your smart device directly to your office (see Model 3001 Solinst Levelogger App & Interface data sheet).
The new 2″ Locking Well Caps are designed for both standard and Direct Read Cable deployment options.
The well cap has a convenient eyelet for suspending Leveloggers using wireline or Kevlar cord. The Well Cap insert has two openings to accommodate Direct Read Cables for both a Levelogger and Barologger. Adaptors are available to fit 4″ wells.
The cap is vented to equalize atmospheric pressure in the well. It slips over the casing, and the cap can be secured using a lock with a 3/8″ (9.5 mm) shackle diameter.
Direct Read Cables
When it is desired to get realtime data and communicate with Leveloggers without removal from the water, they can be deployed using Direct Read Cables. This allows viewing of the data, downloading and/or programming in the field using a portable computer, DataGrabber, or the Solinst Levelogger App and Interface.
Leveloggers can also be connected to an SDI-12 datalogger using the Solinst SDI-12 Interface Cable attached to a Direct Read Cable.
Shown at left: Barologger Edge and Levelogger Edge Installed in a Well Using Direct Read Cables
Direct Read Cable Specifications
Direct Read Cables are available for attachment to any Levelogger in lengths up to 1500 ft.
The 1/8″ dia. (3.175 mm) coaxial cable has an outer polyurethane jacket for strength and durability. The stranded stainless steel conductor gives non-stretch accuracy.
Accurate Barometric Compensation
The Levelogger Edge measures absolute pressure (water pressure + atmospheric pressure) expressed in feet, meters, centimeters, psi, kPa, or bar.
The most accurate method of obtaining changes in water level is to compensate for atmospheric pressure fluctuations using a Barologger Edge, avoiding time lag in the compensation.
The Barologger is set above high water level in one location on site. One Barologger can be used to compensate all Leveloggers in a 20 mile (30 km) radius and/or with every 1000 ft. (300 m) change in elevation.
The Levelogger Software Data Compensation Wizard automatically produces compensated data files using the synchronized data files from the Barologger and Leveloggers on site.
The Barologger Edge uses pressure algorithms based on air rather than water pressure, giving superior accuracy.
The recorded barometric information can also be very useful to help determine barometric lag and/or barometric efficiency of the monitored aquifer.
The Barologger Edge records atmospheric pressure in psi, kPa, or mbar. When compensating submerged Levelogger Edge, Gold or Junior data, Levelogger Software Version 4 can recognize the type of Levelogger and compensate using the same units found in the submerged data file (Levelogger Gold and Junior measure in feet, meters, or centimeters). This makes the Barologger Edge backwards compatible.
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