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| LogDator™ 2" under-water logger specifications
| |
| Model item number | LD-02-00 |
| Physical | |
| Dimensions | 190 mm x 51 mm (excluding finger screw and optional sensors) |
| Mass | 0.45 kg (1 lb.) |
| Buoyancy in sea water | Nearly neutral |
| Depth rating | 45 m (150') - higher on request |
| Sensors | |
| Built-in channels | Temperature (cK, ±0.3 K), battery voltage (mV, ±0.1 V) |
| Optional sensors | 2 channels with signal conditioning (e.g., light, pressure) |
| Direct input channels | 6, one of which can be used for temperature (no software support for the others) |
| Logger | |
| Model | LogDator™ LM-01-00/D |
| A/D converter | 12-bit resolution in hardware, 16-bit after anti-aliasing |
| Optional sensor sampling | Bursts of 0 to 84 samples at 0.5 Hz to 50 Hz |
| Measurement interval | User selectable from 1 second to 24 hours |
| Real-time clock | UTC (GMT) by default, can be set to within 0.02 s |
| Data records | 512-byte records that include metadata and 16-bit analog data |
| Analog data | Stored as voltage, not in physical units (with the exception of temperature) |
| Conversion and calibration | Performed in software, see below |
| Internal memory | 2 MB (4096 records) |
| Memory cards | SD and MMC cards up to 2 GB |
| User interface | NavPin control stick and 2 x 8 char LCD display |
| Diver interface | Magnetic switch for mode change |
| Computer interface | USB and RS-485 (EIA-485, TIA-485) |
| Network | Up to 255 units per RS-485 cable |
| Network protocol | LogDator Communication Protocol ver. 1.0 |
| Power supply options | 2 size AA Li batteries 2.1 Ah, RS-485 cable, USB |
| Power backup | Keeps settings for several minutes without power connected, if in idle |
| Power demand | |
| Input voltage range | 3.5 V < Usupply < 9 V for most sensors, 5.5 V < Usupply < 9 V for 5 V sensors |
| Minimum RAM retention voltage | 1.8 V (lower voltages lead to a Reset) |
| Current use in idle, no card | 0.83 mA in RS485 mode; 32 μA in Log or Sleep mode |
| Current use of memory card | MMC and SD cards typically use 0.1 mA to 0.25 mA in idle |
| Current drain from supply | Ipeak < 5 mA, Iaverage < 1 mA |
| Multiple power sources at once | The one with the highest voltage is used (battery, USB, or RS-485 cable) |
| Software "sedimeter.exe" | |
| Functions | Set-up, download, real-time monitoring, data analysis, data export, edit calibrations, etc. |
| Optional data analysis | Average, frequency, and amplitude measure of burst samples from one measurement |
| Communication methods | USB and RS-485 (EIA-485, TIA-485) |
| Simultaneous capacity | 255 instruments via RS-485, 1 via USB |
| File import | .ld2 files written by the LogDator™ on memory cards |
| Conversion to physical units | Selectable equation for optional sensors |
| Conversion coefficients | User-editable calibration file allows any number of calibration sets per instrument |
| Network definition file | Lists the instruments to be monitored, and optionally their coordinates, in plain text |
| Functions, logging | Instrument setup; data download, presentation, analysis, export |
| Functions, real-time | Control 1 to 255 networked SediMeters; data presentation locally and on web server |
More Information
Contact us today for a quote based on your requirements!
We reserve the right to change specifications and prices without notice, and do not assumte responsibility for typos or other inadvertet errors. Accuracy values refer to one standard deviation and are estimates unless otherwise noted.
