d-Tilt-EL
The d-Tilt-EL is a dual-axis electrolytic tiltmeter designed for semi-permanent installation in a borehole or on a surface structure, reporting both tilt and temperature.
- Range
- ±2° (uniaxial or biaxial)
- Output
- RS485 (9600,8,N,1) ASCII, ~30 chars/reading, transmits over 1000 ft
- Resolution
- 0.001 arcdeg
Overview
In detail
How it works
d-Tilt-EL uses a dual-axis electrolytic tilt sensor with an on-board digital temperature sensor for compensation. Each instrument is individually calibrated, with the coefficients stored in microcontroller memory; a 24-point piecewise linearisation keeps linearity within 0.25% F.S.
The RS485 output is an ASCII-encoded message carrying sensor ID, sensor type, and temperature/tilt data directly in real-world units (arcdeg and °C), avoiding the need for external analog-to-digital conversion.
Deployment
Available in uniaxial or biaxial configurations for moderate-to-high resolution slope, backfill, fault and pillar monitoring. The RS485 signal transmits over 1000 ft without amplification; data can be logged for up to 3 months on a data logger or networked over TCP/IP. Housing is 115 x 65 x 40 mm, supplied with 10 m of leadwire.
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Specifications
Technical specifications
- Range
- ±2° (uniaxial or biaxial)
- Resolution
- 0.001 arcdeg
- Accuracy
- Tilt better than ±0.05 arcdeg; temperature ±1°C
- Output
- RS485 (9600,8,N,1) ASCII, ~30 chars/reading, transmits over 1000 ft
- Operating temperature
- -20°C to 85°C
- Dimensions
- 115 x 65 x 40 mm; 10 m leadwire supplied
- Long-term drift
- <0.1% F.S./year at 1 reading/hour
Related
Often specified alongside
- Range
- ±10° / ±25° / ±50° (selectable)
- Output
- RS-232, RS-422/RS-485; NMEA XDR, Trimble TCM, BAE and Ashtech-compatible formats
- Ingress
- IP65 (NEMA 4X)
Geosystems
Inclinometers and Tiltmeters
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