Miniaturized Quartz Accelerometer

This Miniaturized Quartz Accelerometer is a high-performance standard vibration sensor, specifically engineered as a miniaturized, high-temperature-resistant, and anti-seismic accelerometer. Designed to meet the rigorous demands of complex industrial and engineering scenarios, this product boasts exceptional comprehensive performance, including outstanding repeatability, reliable starting performance, superior high-temperature tolerance, strong anti-seismic capability, and long-term operational reliability. Its versatile design enables seamless application in both static acceleration testing and dynamic vibration measurement, making it a versatile and indispensable sensing component across multiple fields.

What sets miniaturized quartz accelerometer is its distinctive integrated design, which synergizes three core advantages: miniaturization, high-temperature resistance, and vibration resistance. To ensure optimal performance under harsh conditions, the product adopts advanced precision packaging technology and custom-designed dedicated circuitry-these components work in tandem to enhance structural stability, reduce external interference, and ensure consistent performance even in extreme environments. The product's output current maintains a strict proportional relationship with the input acceleration, providing a stable and linear sensing signal that lays the foundation for high-precision measurement.

For users seeking tailored precision,this accelerometer offers flexible operation: by calculating and selecting an appropriate sampling resistor, users can easily achieve high-precision output that aligns with their specific testing requirements, eliminating the need for complex secondary calibration and improving testing efficiency. Additionally, to further enhance measurement accuracy in environments with fluctuating temperatures, the product supports the integration of a built-in temperature sensor upon user request. This optional temperature sensor plays a crucial role in bias and scale factor compensation, effectively mitigating the impact of ambient temperature changes on measurement results and ensuring consistent accuracy across a wide temperature range.

The product integrates a distinctive design centered on miniaturization, high-temperature resistance, and vibration resistance, complemented by advanced precision packaging technology and custom-developed dedicated circuitry. This integrated design effectively enhances structural stability, reduces interference from complex downhole environments (such as high pressure, corrosive media, and electromagnetic interference), and ensures consistent performance under extreme conditions. In terms of working principle, the product's output current maintains a strict proportional relationship with the input acceleration, providing a stable and linear sensing signal that lays the foundation for high-precision measurement. Users can achieve high-precision output by calculating and selecting an appropriate sampling resistor, which simplifies on-site operation and reduces the need for complex secondary calibration. Furthermore, a built-in temperature sensor can be integrated upon user request, which is used for real-time bias and scale factor compensation-this function is particularly critical in oil drilling, as it effectively mitigates the impact of drastic ambient temperature fluctuations on measurement accuracy, ensuring reliable data output even in the dynamic temperature environment of downhole operations.

1. Miniaturized Micro Structure Design

Adopting a highly integrated micro structure design, the accelerometer achieves an ultra-light outline size with a weight ≤25 grams. This compact and lightweight design is realized through precision micro-machining technology and optimized structural layout, which not only effectively reduces the overall volume and weight of the product but also ensures the structural rigidity and stability of the sensor. The miniaturized feature makes it suitable for installation in space-constrained application scenarios, such as downhole drill collars, small-sized industrial equipment, and precision measuring instruments, without interfering with the normal operation of the host equipment, while facilitating flexible deployment and integration.

2. Excellent Temperature Characteristics

The product boasts excellent temperature characteristics, with stable performance maintained based on the full-temperature mean value. Relying on the inherent temperature stability of high-purity quartz crystal and advanced temperature compensation technology, it can effectively suppress the impact of temperature changes on measurement accuracy. Whether in low-temperature or high-temperature environments, the sensor's zero bias, scale factor, and other key performance indicators remain stable, ensuring consistent measurement results across the entire operating temperature range. This feature is particularly critical for applications in extreme temperature environments, avoiding measurement errors caused by temperature drift and laying a foundation for high-precision data collection.

3. Outstanding Environmental Adaptability & Flexible Output Options

It has excellent environmental adaptability, capable of stably operating in harsh environments such as high pressure, strong vibration, electromagnetic interference, and corrosive media. The rugged packaging design and anti-interference structure effectively isolate external environmental impacts, ensuring reliable performance in complex working conditions. At the same time, the product provides flexible output options to meet diverse user needs: optional temperature output function can realize real-time temperature monitoring and feedback, facilitating subsequent temperature compensation and data correction; optional analog output mode is compatible with various data acquisition systems, enabling seamless connection with different types of host equipment and improving the versatility and applicability of the product.

4. Zero Frequency DC Response & Strong Anti-Interference Ability

Equipped with zero frequency DC response capability, the accelerometer can accurately measure both static acceleration and dynamic vibration signals, with no blind area in the measurement frequency range. This feature allows it to adapt to both static attitude measurement (such as drill string attitude detection in oil drilling) and dynamic vibration monitoring (such as equipment vibration detection), realizing dual-compatible measurement of static and dynamic states. In addition, the product adopts current output mode, which has strong anti-interference ability compared with voltage output. It can effectively resist electromagnetic interference, signal attenuation, and external noise in complex environments, ensuring that the output signal is stable and reliable, and the measurement data is accurate and true.

5. Comprehensive Performance Advantages: High Temperature Resistance, Anti-Seismic, Low Noise & High Resolution

The accelerometer integrates multiple superior performance characteristics, comprehensively improving its adaptability and measurement quality:

- High Temperature Resistance: With excellent high-temperature resistance, it can maintain stable operation in extreme high-temperature environments, matching the wide operating temperature range, and avoiding performance degradation or failure caused by high temperatures.

- Anti-Seismic Performance: The reinforced shock-absorbing structure and rugged design enable it to withstand intense continuous vibration and instantaneous impact, ensuring stable output even in high-vibration scenarios such as drill bit rock breaking in oil drilling.

- Low Noise: Adopting high-precision quartz sensing elements and noise reduction circuit design, the product effectively reduces internal electronic noise and external environmental noise, ensuring that the output signal is clean and free of interference, and improving the signal-to-noise ratio of measurement data.

- High Resolution: It has high measurement resolution, which can accurately capture small changes in acceleration, even tiny static acceleration or weak dynamic vibration signals, meeting the high-precision measurement needs of various application scenarios.

6. Wide Operating Temperature Range

The product has a wide operating temperature range of -55~180℃, covering most extreme temperature application scenarios, from low-temperature outdoor environments to high-temperature downhole or industrial high-temperature working conditions. This wide temperature adaptation range, combined with its excellent temperature characteristics and high-temperature resistance, enables the accelerometer to maintain stable and reliable performance in various temperature environments, without the need for additional temperature protection measures, greatly expanding its application scope and reducing the difficulty of on-site deployment.

1. Inclination Measurement in Oil Drilling

As a core sensing component in oil drilling operations, quartz accelerometers play an irreplaceable role in inclination measurement, especially in directional drilling, deep well, and ultra-deep well drilling scenarios. Their unique performance characteristics perfectly match the extreme downhole environment, ensuring accurate and reliable measurement of wellbore attitude, which is crucial for improving drilling efficiency and ensuring drilling safety.

Against the harsh downhole conditions (high temperature up to 180℃, intense vibration, high pressure, and drastic temperature changes), quartz accelerometers demonstrate obvious advantages compared with traditional accelerometers.

Excellent temperature stability and high-temperature resistance ensure stable measurement accuracy in the full downhole temperature range (-55~180℃), avoiding data distortion caused by temperature drift.

2. Vibration Isolation Testing of Precision Instruments and Equipment

Precision instruments and equipment (such as aerospace measuring instruments, laboratory analytical instruments, and high-precision machining equipment) are highly sensitive to external vibration. Even tiny vibrations can affect their measurement accuracy, operational stability, and service life. Quartz accelerometers, with their low noise, high resolution, and strong anti-interference ability, are ideal for vibration isolation testing of such equipment, helping to evaluate vibration isolation effects and optimize vibration isolation design.

Low noise and high resolution can accurately capture tiny vibration signals (even weak vibration below µg level), ensuring the accuracy and comprehensiveness of test data, which is crucial for evaluating the subtle vibration isolation effect of precision instruments.

Excellent frequency response range (covering low-frequency to high-frequency vibration) can monitor both static vibration and dynamic vibration, adapting to different vibration isolation test requirements of precision instruments.

A type outside drawing (round)

B type outside drawing (square)

High Precision & Excellent Repeatability: With zero bias repeatability < 200µg, scale factor repeatability < 150ppm, and bias instability as low as 3.05µg, it can accurately capture even tiny changes in acceleration, ensuring consistent and reliable measurement data in long-term operation.

Outstanding Temperature Stability: Equipped with advanced temperature compensation technology, combined with the inherent temperature stability of quartz crystal, the product maintains stable performance across the full operating temperature range (-55~180℃). The temperature coefficient is optimally <50μg/℃, effectively avoiding measurement errors caused by temperature drift, which is crucial for extreme temperature scenarios such as oil drilling downholes.

High Temperature & Anti-Seismic Performance: The product can withstand a wide operating temperature range of -55~180℃ (customizable up to 200℃ for ultra-deep well scenarios) and is designed with a reinforced shock-absorbing structure, capable of withstanding continuous random vibration of 25g (RMS, 10-2000Hz) and instantaneous impact of up to 1000g/0.5ms. It is perfectly adapted to the intense vibration and high-temperature environment of oil drilling downholes.

Miniaturized & Easy Integration: With a micro-structure design, the product's outline size is ultra-light (weight ≤25 grams), which can be easily installed in space-constrained equipment such as downhole drill collars, MWD systems, and precision instruments, without interfering with the normal operation of the host equipment. The standardized interface design also facilitates seamless integration with various data acquisition systems and host equipment

Strong Anti-Interference & Corrosion Resistance: Adopting current output mode, the product has strong anti-electromagnetic interference ability, which can effectively resist signal attenuation and external noise in complex environments. The advanced precision ceramic packaging not only enhances structural rigidity but also provides excellent corrosion resistance and high-pressure resistance (up to 100MPa), adapting to corrosive media such as drilling fluid in oil drilling.

Flexible Output Options: The product supports optional temperature output and analog output modes. The optional built-in temperature sensor can realize real-time temperature monitoring and feedback, facilitating subsequent temperature compensation and data correction; the analog output mode is compatible with various data acquisition systems, improving the product's versatility.

Tailored Customization: According to the specific needs of users, we can customize the product's temperature resistance grade, measurement range, size, and installation method, perfectly matching the unique requirements of different application scenarios (such as ultra-deep well drilling, high-precision instrument testing).

1. Core Principle: Piezoelectric Effect of Quartz Crystal

High-purity quartz crystal has a regular crystalline structure. When external acceleration acts on the crystal, it generates inertial force, causing elastic deformation of the quartz crystal. This deformation stimulates the crystal to produce a polarization phenomenon, generating positive and negative charges on its surface-this is the piezoelectric effect. The magnitude of the generated charge is strictly proportional to the inertial force (and thus the measured acceleration), laying the foundation for quantitative measurement.

2. Working Process

- When acceleration is applied to the sensor, the internal quartz sensing element is subjected to inertial force, resulting in elastic deformation.

- The deformed quartz crystal generates a piezoelectric charge proportional to the acceleration magnitude.

- The built-in dedicated circuitry converts the weak piezoelectric charge into a stable current signal (current output mode), which has strong anti-interference ability.

- The output current is linearly related to the input acceleration; users can obtain high-precision acceleration data by matching an appropriate sampling resistor.

3. Key Supplementary Mechanism

To ensure measurement accuracy in extreme environments, an optional built-in temperature sensor is integrated. It monitors the ambient temperature in real time and performs bias and scale factor compensation, effectively suppressing the impact of temperature drift on the piezoelectric effect of quartz crystal, ensuring stable performance across the full operating temperature range.

Q1: What is the core advantage of quartz accelerometers compared with silicon-based accelerometers?

A1: The core advantage lies in the superior physical properties of quartz crystal-low internal friction, ultra-low hysteresis, and excellent temperature stability. It has higher measurement precision (zero bias repeatability < 200µg), better repeatability, and stronger resistance to temperature drift, which is more suitable for high-precision and extreme temperature scenarios (such as oil drilling downholes).

Q2: What is the operating temperature range of the quartz accelerometer, and how to ensure stability in high/low temperature environments?

A2: The standard operating temperature range is -55~180℃ (customizable up to 200℃). It relies on the inherent temperature stability of quartz crystal and built-in temperature compensation technology (optional temperature sensor) to perform real-time bias and scale factor compensation, effectively suppressing the impact of temperature changes on measurement accuracy.

Q3: How to adjust the measurement precision? Can users operate it independently?

A3: The output current of the product is linearly proportional to the input acceleration. Users can achieve high-precision output by calculating and selecting an appropriate sampling resistor, which is simple to operate and can be completed independently without complex secondary calibration.

Q4: Is it affected by electromagnetic interference? How to avoid it?

A4: The product adopts current output mode, which has strong anti-electromagnetic interference ability. In addition, the reinforced packaging can isolate external electromagnetic signals; during use, avoid installing it near high-power electromagnetic equipment to further ensure signal stability.

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