1. Althen Sensors
  2. Sensors
  3. Tilt and inclinometers
  4. Geotechnical (electrolytic) inclinometers
  5. 850 Series Uniaxial or biaxial MEMS tuff tilt inclinometer
  • 850 Single-/Dual-Axis MEMS Tiltmeter

850 Series Uniaxial or biaxial MEMS tuff tilt inclinometer

With low-cost MEMS technology and ±5VDC, 0-5 VDC, or 4-20 mA output signals.


Key features

  • Ranges ±14.5°, ±30°, and ±90°
  • Robust and durable housing
  • Uniaxial and biaxial models available
  • Cost-effective MEMS technology
  • Dual current input
  • ±5 VDC output
  • Optional temperature sensor available
  • IP65 seal

About the 850 Series “MEMS Tuff Tilt” 

– rugged geotechnical tilt sensor (single- or dual-axis) with analog outputs

The 850 Series “MEMS Tuff Tilt” is a cost-effective, rugged MEMS-based tiltmeter, available in single-axis or dual-axis versions. Designed for outdoor geotechnical use, it combines a durable housing with flexible analog output options (±5 VDC, 0–5 VDC, or 4–20 mA)—ideal for integration into data loggers, controllers, and monitoring systems.

Features / benefits

  • Single- or dual-axis (uniaxial/biaxial) available
  • Outputs: ±5 VDC, 0–5 VDC, or 4–20 mA
  • Tilt ranges: ±14.5°, ±30°, ±90°
  • Monitoring-grade accuracy: 0.05% FRO non-linearity, typical 5 Hz bandwidth
  • Rugged & outdoor-ready: IP65, operating −40 to +80 °C, 100 g shock (½ sine)
  • RoHS compliant, filtering available, optional temperature sensor

Typical applications

  • Platform leveling / positioning
  • Structural monitoring (structures and industrial assets)
  • Construction monitoring
  • Industrial machinery positioning
  • Radial gate measurement & control (e.g., dam/sluice gate control)

Configurations

  • A850-D: ±5 VDC output
  • A850-S: 0–5 VDC output
  • C850: 4–20 mA output

Do you need this sensor for your next project?

Request a no-obligation quote or send us your contact details for a free, no-obligation consultation. Our sales engineers will then contact you within a maximum of 1 to 2 working days.

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Talk to our experts

Not exactly what you are looking for? We offer standard sensors, but can also help you with sensors adapted for you or a fully customised measurement solution. Contact us for advice or pricing.

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Technical Specifications

Specification Value
Dimensions 120 x 80 x 60 mm
Housing Painted, die cast aluminum, NEMA 4X (IP65)
Output +/-5VDC, 0-5 VDC or 4-20mA
Range ±14.5°, ±30°, ±90°
Resolution 0.002°/0.004°
Temperature range -40 to +85° C

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