Model D701 Platform Tiltmeter

The Model 701-2 Platform mount tiltmeter is our most popular design for high precision tilt measurements. Units come with built-in invar leveling legs, for easy installation on any horizontal surface. The A701-2 also includes two switchable gains and two low-pass filter settings. Using an absolute gravity-referenced electrolytic sensor, the A701 delivers ultra-high sensitivity to <0.1 µrad with virtually zero long-term drift. The output is a stable ±8 DC voltage (±16 VDC differential). The D701 digital version has onboard memory, with a storage capacity of up to 22,000 samples.



Additional Information

Weight 48 oz
Dimensions 6 × 6 × 4 in

• Rugged, reliable, and extremely accurate
• Weatherproof 4X version available
• Ultra-high sensitivity to <0.1 µrad with virtually zero long-term drift


• Volcano monitoring
• High-precision geotechnical engineering
• Bridge deflection monitoring
• Precision metrology
• Radar platform leveling
• High-accuracy tilt monitoring

Performance Specifications

High GainMid-Range
Angular Range (°)±0.5
Non-Linearity (%)0.40.1
Repeatability4µradians (static)10µradians (static)
Time Constant0.15 sec2 sec
Kz Temp Coefficient (bias/C, typical)&plusmn3.5µradian
Ks Temp Coefficient (%/°C, typical)±0.02
OutputRS-232, RS-422 (RS-485 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 operational and storage
MaterialsAnodized and painted aluminum
Cable3m (10 ft) multiconductor cable + overall shield, PVC jacket, connectors included


D701 Datasheet
D700 Parts
Outline Drawing
D700s User Manual

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