R28 series diff/sum(ratiometric) output RVDT rotary position sensors
Virtually unlimited lifespan
Fast dynamic response
Resistant to shock and vibration
There is no contact friction between the sensing elements
Wide temperature range
Gas pedal position
Aircraft wheels
Flight control system
Servos
Aviation Fuel Conditioning System
Valve position feedback
Machinery and equipment
R28-017 Series RVDT Rotary Variable Differential Transformer is an angular displacement transducer that provides a linearly proportional voltage output for angular displacement in harsh environments such as low temperatures/high temperatures, strong shock and vibration.
The RVDTs are non-contact, as well as integral coil and rotor design, with long-term reliability and long service life.
The R28-017 is a ratio metric (differential ratio sum) design, and the output is almost unaffected by temperature and power supply changes, which can effectively improve the system accuracy.
This series is AC-operated and have no built-in signal conditioning electronics, thus providing users with an extremely wide operating temperature range (from -55°C to 155°C).
It offers a measuring range of ±65° and is suitable for a wide range of applications such as aerospace, engine, valve position feedback and rotary brake feedback.
ABEK SENSORS can be customized according to the customer's requirements, including dual-channel redundancy design, mounting interfaces, cable outlets, connector types, etc.
Electric Specifications
| Parameters | Description | ||
| Range: | ±65° (total 130°) | ||
| Mechanical stroke | 360° | ||
| Input Voltage: | 3V | ||
| Input Frequency: | 3000Hz | ||
| Output type: | (Va-Vb)/(Va+Vb) | ||
| Sensitivity | (7.4 to 8.0) mV/V/deg | ||
| Full-scale output ratio (±65°): | ±0.53V | ||
| Linearity | ±40° | ±50° | ±65° |
| <±0.5% | <±1% | <±2% | |
| Sum Voltage: | 3V±6% | ||
| Null Voltage: | ≤25mV | ||
| Phase: | ≤12° | ||
| Insulation Resistance: | 500V DC, >100MΩ | ||
| Dielectric Strength: | AC 500Vrms,60s | ||
| Operating Temperature: | -55°C to +155°C | ||
Dimensions
Wiring Connection
Ordering Guide
| R28-017 | - | 40 |
| Series | Factory calibration range | |
| 40: ±40° | ||
| 50: ±50° | ||
| 65: ±65° |