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Model D711-A/B/C

The model D711 Floor-mount Tiltmeter is a rugged, high-precision instrument with advanced digital firmware. Output is RS-232 or RS-422 (RS-485 full duplex). The D711 bolts or clamps to any horizontal surface, and is well suited for areas of heavy traffic or vibration. Utilizing a high-precision electrolytic sensor element, units deliver up to 1 μradian resolution with virtually zero long-term drift. Programmable firmware controls include sample averaging, auto-zero (tare), baud/output rate, temperature compensation and more. The D711 also includes on-board memory, with storage capacity up to 22,000 samples. Use the D711 for volcano monitoring, geotechnical engineering, structural monitoring, platform leveling, and more.




Additional information

Weight 48 oz
Dimensions 6 × 6 × 4 in

Performance Specifications

D711-2A(4X) (High-gain)D711-2B(4X) (Mid-range)D711-2C(4X) (Wide-angle)
Total Range±0.5°±5.0°±70°
Calibrated Linear Range±0.5°±5.0°±60°
Non-linearity (%)0.4%0.1%0.1%
Resolution1 μradian10 μradian21 μradians
Repeatability4 μradians (static)15 μradians (static)350 μradians
Time Constant0.15 sec0.15 sec0.15 sec
Kz Temp Coefficient (°/C, typical)±3.5 μradians/°C (typical)±3.5 μradians/°C (typical)±0.004°/°C (typical)
Ks Temp Coefficient (%/°C, typical)±0.02%/°C (typical)±0.02%/°C (typical)±0.05%/°C (typical)
OutputRS232, RS422 (RS485 full duplex)
Output FormatNMEA XDR, Trimble TCM, Ashtec compatible, Simple (default: X, Y, Temp., S/N)
Baud Rate9600 (default), 19200, 28800, 57600, 115200, 230400
ChannelsX-tilt, Y-tilt, Temperature, Serial No.
Power7-28 VDC @ 30mA, 250 mV ripple max, reverse polarity protected
Environmental-40 to +85 C operation and storage; IP65
Dimensions6 x 6 x 4 inches (15 x 15 x 10 cm), 3 lb (1.4 kg)
MaterialsAnodized and painted aluminum
Cable3m (10 ft) multiconductor cable + overall shield, PVC jacket, connectors included


D711-2 (4X) Datasheet
D700 Parts
Outline Drawing
D700s User Manual