RV Leveling (Hydraulic Systems)

Uneven ground can be problematic for RVs and other large vehicles when they’re parked, not only for the user’s comfort, but also for the functionality of appliances and systems. To resolve this, hydraulic leveling systems and electric leveling systems are used to quickly and accurately automatically level and stabilize an RV parked on uneven ground with the touch of a button. Auto leveling systems are more efficient and effective than using multiple manual jacks and traditional, inaccurate bubble levels. What’s at the heart of an RV auto leveling system? A tilt sensor.

There are many different types of tilt sensors, but electrolytic tilt sensors are the most common for RV leveling systems. There are four primary reasons for this:

  1. Accuracy and repeatability
  2. Long term stability and turn on bias
  3. Temperature stability
  4. Cost

The two most common products for this market are our 0717-4319-99 and 0717-4313-99 dual-axis tilt sensors. Their wide operating range of ±50° tilt removes any concerns related to mounting and significantly simplifies manufacturing, testing, and installation in an RV for an OEM or end user. Compared to other tilt sensing technology available at the same price, these two tilt sensors provide much better accuracy, down to a tenth of a degree (±0.1°) for the 0717-4319-99 and down to half-a-tenth of a degree (±0.05°) for the 0717-4313-99.

This high accuracy is maintained over the life of the sensor and takes into account any turn-on bias (also called null offset or zero drift), which causes significant error in angle readings with many other tilt sensing technologies. The accuracy is also maintained over a wide temperature range which encompasses anything you might normally experience outside or in the cabin of a vehicle in outdoor conditions, from -40 °C to 85 °C (or -40 °F to 185 °F).


electrolytic tilt sensor circuit electronic tilt sensor, 0717-4318-99, 0717-4319-99, The Fredericks Company, +1 215 947 2500
electrolytic tilt sensor circuit electronic tilt sensor, 0717-4313-99, 0717-4315-99, The Fredericks Company, +1 215 947 2500

±50° operating range, ±0.1° accuracy

TrueTILT™ Single-Axis Mid-Range Electrolytic Tilt Sensor

±50° operating range, ±0.05° accuracy

TrueTILT™ Dual-Axis Wide-Range Electrolytic Tilt Sensor