Ref: Model A601-2

High-resolution 25 nrad dual-axis tiltmeter for geotechnical and scientific applications

  • High-resolution 2-axis tiltmeter
  • Measurement ranges: ±0.0115°, ±0.0235°, ±0.115°, ±0.235°.
  • Resolution: 25 nrad (A601-2A) or 50 nrad (A601-2B)
  • Differential analog output +/-8 or +/-16V
  • Electrolytic technology
  • Low-pass filter - 1 Hz
  • Temperature output
  • Horizontal installation - micrometric screws included
  • Operating temperature: -25 to +70°C
  • Power supply: ±11 to ±15 VDC
  • Dimensions: 15 x 15 x 10 cm
  • 5m cable included

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Presentation

A601-2 is a tiltmeter for geophysical applications requiring high resolution and highest repeatability. A601-2 tiltmeter includes two high-resolution electrolytic sensing elements mounted perpendicularly, enabling detection of minute movements on the X and Y axes (resolution < 25 to 50 nrad depending on measurement range).

4 measurement ranges are available: ±0.0115°, ±0.0235°, ±0.115°, ±0.235°. Output signal is ±8 VDC (unipolar) or ±16 VDC (differential). 2 low-pass filter gain and time constant values are selectable by switch.

Specifications

Modèle Model A601-2A Model A601-2B
Axes X, Y X, Y
Measuring range ±200 μradians (±0.0115°) ou ±2000 μradians (±0.115°) ± 400 μradians (±0.0235°) ou ±4000 μradians (±0.235°)
Sensitivity 25 nrad/mv ou 250 nrad/mv 50 nrad/mv ou 500 nrad/mv
Resolution < 25 nrad < 50 nrad
Non-linearity 2% 2%
Signal output ±8VDC (uni.); ±16VDC (diff) ±8VDC (uni.); ±16VDC (diff)
Temperature drift on zero ±3 μradians/°C (typical) ±3 μradians/°C (typical)
Temperature drift on sensitivity 0.05%/°C (typical) 0.05%/°C (typical)
Temperature output 0.1°C/mV 0.1°C/mV

Installation

The tiltmeter is placed on the reference surface. Levelling and calibration are performed using feet fitted with micrometric screws. 5m cable included. Voltage supply is between 11 and 15 VDC.

Dimensions

Applications

  • antenna levelling
  • tide measurement
  • volcano monitoring
  • telescope orientation
  • high-precision metrology
  • precision mechanical production
Technologie
Geotechnical
Number of Axis
2 Axis
Etendue de mesure
0.0115 / 0.115 / 0.0235 / 0.235 °
Résolution
0.000001°- 0.001°
Bande passante (-3 dB)
5 , 0.5 Hz
Application
High Accuracy, geotechnical
Nonlinearity (% FS)
± 2 %
Sensibilité du gain
0.02 %/°C
Sortie analogique
analog (Voltage)
Analog output signal
±8 VDC
Tension d'alimentation
±11 to ±15 VDC
Température de fonctionnement
-25 to 70 °C
Protection Class
IP60
Housing
Aluminium
Installation
Platform

Dimensions

Wiring

  • Special calibration
  • Temperature sensor
  • Display
  • Datalogger

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