Model A711-2 & A716-2

The models A711-2 (floor-mount), and A716-2 (wall-mount) bolt or clamp to any surface, and are well suited for areas with heavy traffic or vibration. Electronic performance is identical to the model A701-2. Floor-mount models are available with a weatherproof NEMA 4X seal (A711-2 4X), or with an RS-232, RS-422, or RS-485 digital output (D711). D711 units also include onboard memory with a storage capacity of up to 22,000 samples. Units include two switchable gains and two low-pass filter settings and are sensitive to <0.1 µrad. Applications include volcano monitoring, high-precision geotechnical engineering, bridge deflection monitoring, precision metrology, radar platform leveling, and high-accuracy tilt monitoring applications where bolt-on installations are required.

Additional Information

Weight 48 oz
Dimensions 6 × 6 × 4 in

• Volcano monitoring
• Geotechnical engineering
• Structural monitoring
• Platform leveling

Performance Specifications

High Gain (Version A)Mid-Range (Version B)
Linear Range (°)High Gain: ±0.046
Low Gain: ±0.46
High Gain: ±0.8
Low Gain: ±8.0
Scale FactorHigh-Gain: 0.1 µradian/mV
Mid-Range: 1µradian/mV
High-Gain: 0.1°/V
Mid-Range: 1°/V
Non-linearity (%)High-Gain: 0.2
Mid-Range: 2
High-Gain: 0.2
Mid-Range: 1.5
Repeatability1µradian (static)2µradian (static)
Time ConstantFilter on: 7.5 sec
Filter off 0.5 sec
Filter on: 7.5 sec
Filter off 0.4 sec
Kz Temp Coefficient (°/°C, typical)±3µradian ±0.001µradian
Ks Temp Coefficient (%/°C, typical)0.05
OutputSingle-ended: ±8Vdc
Differential: ±16Vdc
ChannelsX-tilt, Y-tilt, Temperature
Output Impedance (Ω)270
Temperature Output0.1°C/mV typical (single ended; 0°C = 0mV)
Power±11 to ±15 Vdc @ +11 and -6mA, 250 mV ripple max, reverse polarity protected
EnvironmentalOperational: -25 to +70°C
Storage: -30 to +100°C
MaterialsAnodized and painted aluminum
Cable3m (10 ft) multiconductor cable + overall shield, PVC jacket, connectors included


A711-2, A-716-2 Datasheet
A711 Outline Drawing
A716 Outline Drawing
User Manual

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