Analog Inclinometers for Mobile Power Systems

Turck has expanded its QR20 inclinometer series with dynamic and static analog variants engineered for mobile work machines operating on 12-V and 24-V electrical architectures. Combining MEMS accelerometers with gyroscopes via sensor fusion, these devices maintain angular precision under high mechanical shock and electromagnetic interference.

Mechanical Robustness and Environmental Seeding
The QR20 housing is rated to withstand mechanical shocks up to 200 g and operates across an ambient temperature range of -40 °C to +85 °C. To eliminate moisture entry paths commonly associated with traditional LED lenses, the housing utilizes a translucent construction. The sensors achieve ingress protection ratings of IP66, IP67, IP68, and IP69K, and an optional GUARD-QR20 protective housing is available for high-exposure environments.

Electromagnetic Compatibility and Electrical Specifications
Designed for direct integration into mobile vehicle electrical systems, the sensors operate with a supply voltage threshold starting at 8 V DC. Electrically, they comply with automotive electromagnetic compatibility standards, featuring 100 V/m immunity to electromagnetic interference per ISO 11452-2 and 200 mA current injection immunity per ISO 11452-4. Furthermore, the devices withstand conducted disturbances per ISO 7637-2 Level 4 and load-dump transients per ISO 16750-2, and they hold an E1 type approval.

Signal Parameterization and Configuration
Users can configure output options via IODD parameterization within the Turck Automation Suite, selecting from 4 to 20 mA, 0 to 20 mA, 0.1 to 4.9 V, 0 to 5 V, 0.5 to 4.5 V, and 0 to 10 V signals. Measurement ranges, filter settings, and center points can be adjusted per axis by inputting specific angle values or capturing the active position. For hardware-level configuration without software tools, an Easy Teach function can be engaged via a jumper between pin 5 and pin 1, while a built-in spirit level function provides visual orientation directly on the unit.

Additional Context:
This section details technical specifications and competitive benchmarking not included in the original product announcement

In the industrial and mobile machinery inclinometer segment, competitive dual-axis and single-axis MEMS solutions (such as those from POSITAL FRABA TILTIX or DIS Sensors QG series) typically provide similar angular ranges (such as 360° single-axis or ±85° dual-axis) and analog outputs (4–20 mA or 0–10 V). However, Turck's implementation of a starting supply voltage of 8 V DC combined with ISO 7637-2 Level 4 and E1 type approval provides an advantage in unstable 12-V vehicle systems subject to severe crank-drop and load-dump variations. Furthermore, the integration of gyroscope-accelerometer sensor fusion into an analog-output QR20 form factor addresses high-vibration mobile environments where static-only MEMS sensors require aggressive digital low-pass filtering that compromises response latency.

Edited by Sucithra Mani, Induportals editor – adapted by AI.

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