Additional Information
| Weight | 48 oz |
|---|---|
| Dimensions | 6 × 6 × 4 in |
| Features | • Rugged, reliable, and extremely accurate |
| Applications | • Volcano monitoring |
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.
Performance Specifications
| High Gain | Mid-Range | |
|---|---|---|
| Angular Range (°) | ±0.5 | ±5.0 |
| Non-Linearity (%) | 0.4 | 0.1 |
| Resolution | 1µradian | 10µradians |
| Repeatability | 4µradians (static) | 10µradians (static) |
| Time Constant | 0.15 sec | 2 sec |
| Kz Temp Coefficient (bias/C, typical) | ±3.5µradian | |
| Ks Temp Coefficient (%/°C, typical) | ±0.02 | |
| Output | RS-232, RS-422 (RS-485 full-duplex) | |
| Output Format | NMEA XDR, Trimble TCM, Ashtec compatible, Simple (default: X, Y, Temp., S/N) | |
| Baud Rate | 9600 (default), 19200, 28800, 57600, 115200, 230400 | |
| Channels | X-tilt, Y-tilt, Temperature, Serial No. | |
| Power | 7-28 VDC @ 30mA, 250 mV ripple max, reverse polarity protected | |
| Environmental | -40 to +85°C operational and storage | |
| Seal | IP65 | |
| Materials | Anodized and painted aluminum | |
| Cable | 3m (10 ft) multiconductor cable + overall shield, PVC jacket, connectors included | |
