Model A701-2 Platform Tiltmeter

Model A701-2 Platform Tiltmeter

Model A701-2 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.

SKU: A701 Category:

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.

Weight

1.36 kilograms
Dimensions

152.4 x 152.4 x 101.6 mm
Features

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

Bridge deflection monitoring, High-accuracy tilt monitoring, High-precision geotechnical engineering, Precision metrology, Radar platform leveling, Volcano Monitoring
Linear Range (°)

High Gain: ±0.046, High Gain: ±0.8, Low Gain: ±0.25, Low Gain: ±5.0
Scale Factor

High-Gain: 0.1 µradian/mV, High-Gain: 0.1°/V, Mid-Range: 1°/V, Mid-Range: 1µradian/mV
Non-linearity (%)

High-Gain: 0.2, Mid-Range: 1.5, Mid-Range: 2%
Resolution

0.1µradian, 1.0µradian
Repeatability

1µradian (static), 2µradian (static)
Time Constant (seconds)

Filter off 0.4 sec, Filter off 0.5 sec, Filter on: 7.5 sec
Kz Coefficient (°/C, typical)

±0.001µradian, ±3µradian
Ks Coefficient (%/C, typical)

0.05
Output (VDC)

Differential: ±16Vdc, Single-ended: ±8Vdc
Channels

Temperature, X-tilt, Y-tilt
Output Impedance (Ω)

270
Temperature Output

0.1°C/mV typical (single ended; 0°C = 0mV)
Power

250mV ripple max, Reverse polarity protected, ±11 to ±15 Vdc @ +11 and -6mA
Environmental

-25 to +70°C, -30 to +100° C storage
Seal

IP50
Materials

Anodized and Alodine Aluminum
Cable

3m (10 ft) multiconductor cable + overall shield, Connectors included, PVC jacket

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