- May 6, 2014
- Posted by: admin
- Category: New Product, News
Sigra’s broadly applicable Field Data Logger technology is ideal for monitoring landslide, ground anchor, stress change, aquifer pressure, petroleum reservoir monitoring, and much more.
1. Plenty of Storage
The Sigra Data Logger V9 comes with a 4 GB micro-SD card built-in to permit lifetime storage.
2. Improved Resolution
By storing the records in a 32-bit floating point format, improved resolution of 0.001 Hz is available for Vibrating Wires without affecting coefficients for previously installed transducers. This allows seamless upgrade of existing Vibrating Wire installations for improved resolution.
For Vibrating Wires used in surface applications (strain gauge, shallow piezos etc.), the temperature drift will be significant at these resolutions.
3. Stable Clocks
The internal clock chip with a built-in crystal oscillator has a time drift of less than 2 minutes a year across the full operating temperature range. Less than 20 seconds of drift is achievable if maintained between 10 and 40 degrees Celsius.
4. Low Voltage Disconnect
The V9 Data Logger (IP65 version) now has a built-in Low Voltage Disconnect (LVD) to protect the batteries from extreme discharge. This prevents the early failure of cells.
The loggers have an alarm capability that permits them to detect when a value exceeds a threshold value, rate or both. The logger can then send a warning via SMS message (requires a 3G modem), trigger an output and store the alarm as a flag when downloaded. Alarms are sent through the local logger network to permit warning devices across the site to be activated.