PDA826FL Dual-Axis Tilt Sensor for Bridge and Dam monitoring
APPLICATION FIELD
- Wind power monitoring
- Bridge and Dam monitoring
- Ancient building monitoring
- High-speed rail track monitoring
- Ground satellite communication vehicles
- Railway gauge ruler and gauge leveling
- Satellite communication vehicl
- Engineering vehicle leveling
- Geological equipment tilt monitoring
WORKING PRINCIPLE OF TILT ANGLE
Adopting imported core control unit and utilizing the principle of capacitive micro pendulum. Using the principle of Earth's gravity, when the tilt unit tilts, the Earth's gravity will produce a component of gravity on the corresponding pendulum, and the corresponding capacitance will change. By amplifying, filtering, and converting the capacitance, the tilt angle can be obtained.
INSTALLATION PRECAUTION
Please install the tilt sensor according to the correct method. Incorrect installation will cause measurement errors. Pay special attention to one "surface" and two "line":
- The sensor mounting surface and the surface to be measured must be fixed tightly, flat and stable, if installation surface is unevenness, it will cause the angle error.
- The axis of the sensor and the axis to be measured must be parallel, and there should be no angle between the two axes as possible.
MAIN FEATURES
- Biaxial tilt angle measurement
- Range ±10°
- Horizontal/vertical optional
- DC 9～36V wide voltage input
- Resolution 0.0005°
- IP67 protection grade
- Size: L82*W70*H42mm
- Output mode TTL
- Wide temperature operation -40～+85℃
SPECIFICATIONS
| PDA826FL | Condition | Parameters | Unit |
|---|---|---|---|
| Measure range | - | ±10 | ° |
| Measure axis | - | XY | axis |
| Resolution | - | 0.0005 | ° |
| Measure accuracy | Room temp. | 0.05 | ° |
| Zero temp coefficient | -40～85℃ | 0.0003 | °/℃ |
| Sensitivity temp. coefficient | -40～85℃ | ≤50 | ppm/℃ |
| Power on time | <0.5 | S | |
| Response frequency | 20 | Hz | |
| Output rate | 5Hz,10Hz,25Hz,35Hz,50Hz,100Hz Can be set | ||
| Ouput signal | RS485/RS232/RS422 Optional | ||
| EMC | According to EN61000 and GBT17626 | ||
| MTBF | ≥98000 hour/time | ||
| Insulation Resistance | ≥100 MΩ | ||
| Shockproof | 100g@11ms / 3 Axial Direction (Half Sinusoid) | ||
| Anti-vibration | 10grms / 10～1000Hz | ||
| Protection grade | IP67 | ||
| Cables | Standard 1 meter long wear-resistant, wide temperature, shielded cable, aviation connector, weight ≤150g | ||
| Weight | ≤400g (Excluding cable) | ||
|
Resolution: Refers to the sensor in measuring range to detect and identify the smallest changed value. Measure accuracy: refers to the root mean square difference between the measured value and the actual angle of the product within the range and for multiple times (more than 16 times). Zero Temperature Drift Coefficient: the change rate of the indication value relative to normal temperature within the rated operating temperature range of the sensor at the zero degree. Sensitivity Temperature Drift Coefficient: The percentage change rate with temperature of the full-scale indication relative to the full-scale indication at room temperature of the sensor in its rated operating temperature range. |
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FAQ: Dual-Axis Tilt Sensor — Frequently Asked Questions
Q1: What is the measurement range and accuracy of this tilt sensor?
A: The sensor offers a measurement range of ±10° with dual-axis capability and a high resolution of 0.0005°, making it ideal for precision tilt monitoring applications.
Q2: How does the sensor work?
A: The sensor is built with an imported core control unit and operates on the capacitive micro-pendulum principle. When the tilt unit tilts, gravity produces a force component on the pendulum, changing the internal capacitance. This signal is then amplified, filtered, and converted into a precise tilt angle reading.
Q3: What applications is this sensor suitable for?
A: Typical applications include:
- Wind power turbine monitoring
- Bridge and dam structural monitoring
- Ancient/historical building monitoring
- High-speed rail track monitoring
- Ground satellite communication vehicles
- Railway gauge rulers and gauge leveling
- Engineering vehicle leveling
- Geological equipment tilt monitoring
Q4: What is the required power supply?
A: The sensor accepts a wide DC input range of 9–36V, offering flexibility with various on-site power sources.
Q5: What output signal does the sensor provide?
A: The sensor outputs a TTL signal for easy integration with your data acquisition or control systems.
Q6: Can the sensor withstand harsh environments?
A: Yes. With an IP67 protection rating and an operating temperature range of –40°C to +85°C, the sensor delivers reliable performance in outdoor, high-humidity, dusty, and extreme temperature conditions.
Q7: What should I pay attention to during installation?
A: Incorrect installation can cause measurement errors. Please follow the "one surface, two axes" rule:
- Surface: The sensor mounting surface must be tightly secured to the measurement surface — flat and stable. An uneven mounting surface will introduce angle errors.
- Axes: The sensor axis must be parallel to the axis being measured, with no angle between the two axes whenever possible.
Q8: Can the sensor be installed both horizontally and vertically?
A: Yes. Both horizontal and vertical installation options are available, so you can choose the orientation that best fits your application.
Q9: What are the sensor's dimensions?
A: The compact housing measures L82 * W70 * H42 mm, making it easy to integrate into a wide range of equipment.
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