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eneral Data |
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Dimensions | Ø49mm, Length: 380 mm |
Housing material | Stainless Steel |
User interface | RS 232; can be addressed via serial and USB interface |
Measuring interval | user definable from 1 second to 99 days |
Power supply | 3 pieces Alkaline batteries, Size: C; sufficient for 2 years (daily data transmission); |
Interfaces for probes | Standard: 1 input for connecting a HT probe Optional: additional input for a second HT probe |
Data Transmission |
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Transmission frequency for 4G-LTE | B1 (2100 MHz); B3 (1800 MHz); B7 (2600 MHz); B8 (900 Mhz); B20 (800 MHz); B28 (700MHz) |
Cellular network | 4G LTE - 2G and 3G as fallback |
Transfer protocol | Standard: FTP, by setting also with SSL encryption |
Alarm Management | • 2 limit values can be defined for each parameter • Possibility to autom. switching of measuring and transmission interval • Low battery warning • Warning message via SMS / eMail and status on web server |
Environmental conditions |
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Operating temperature | -20°C to +65°C / expandable to - 35 °C |
Protection class | IP68; flood-proofed until 1m water column |
- For efficient, continuous monitoring of groundwater wells
- For monitoring and alarming in case of saltwater intrusion
- If warnings prevent damage when defined limits are reached
- For monitoring and alarming of pollutants into groundwater
- For remote monitoring of pumping tests
- In difficult accessible areas
- Periodic control tours are being extended considerably
The LTE Telemetrylogger type 255 amortizes the investment in the shortest time for all groundwater wells that have to be monitored by continuous measurement of water level and/or quality.
The LTE Telemetrylogger automatically transmits the recorded level & quality data to an internet server after a selectable interval. By using the 4G LTE technology, this Telemetrylogger does not require standby- time nor synchronization of the integrated clock. With the integrated modern technology the device supports beside the 4G cellular technology also the 3G and 2G cellular standard as a fallback system. Meanas, if there is no 4G network available at site, the logger will use automatically the other cellular standards.
Additionally, the device can be optionally equipped with an alarm management system which, when user-defined limits are reached, sends an SMS message, sends an e-mail or sends a notification to the server for further automated processing.
- Maintenance free - no desiccant / dry cartridges required
- Direct installation in groundwater wells from 2 inch
- Check measurements by a Water Level Meter are possible without conversion or removal from 2 inch wells
- No synchronization of clock and standby times
- Cost-effective data transmission via cellular network (4G-LTE, 2G and 3G)
- Non-volatile flash memory for up to approx. 190,000 records
- Compact and robust design made of high quality stainless steel
- Easy installation and operation
