High-temperature Accelerometer

High Temperature Quartz Accelerometer is a high-performance standard vibration sensor specifically designed for high-temperature and harsh vibration environments, integrating excellent repeatability, reliable starting performance, outstanding high-temperature resistance, strong anti-seismic capability, and long-term operational reliability. Distinguished from ordinary accelerometers, it is uniquely capable of supporting both static acceleration testing and dynamic vibration measurement, making it a versatile and indispensable testing component for various industrial, aerospace, and automotive applications that demand high precision and stability under extreme conditions. Its comprehensive performance advantages enable it to maintain consistent and accurate measurement results even in the most challenging working scenarios, effectively meeting the rigorous testing requirements of different industries.

To achieve its superior performance in harsh environments, the product adopts a series of innovative and dedicated design solutions, advanced packaging technologies, and customized high-stability circuits. In terms of structural design, it adopts a unique high-temperature-resistant and anti-vibration integrated structure-with a rugged housing made of high-temperature-resistant alloy materials that can withstand extreme thermal stress, and an internal damping buffer mechanism that effectively isolates external vibration interference, preventing the sensor's internal components from being damaged by severe mechanical shocks.

In terms of working principle, the output current of this accelerometer is strictly proportional to the measured acceleration value, which is a core feature that enables it to accurately measure both static acceleration (such as gravitational acceleration) and dynamic acceleration (such as vibration acceleration generated by mechanical operation). This proportional relationship ensures linearity of the measurement results, and users can flexibly select an appropriate sampling resistor through precise calculation based on their specific measurement range and precision requirements. By matching the optimal sampling resistor, the sensor can achieve high-precision current-to-voltage conversion, further improving the measurement accuracy and meeting the diverse precision needs of different application scenarios-from low-precision industrial monitoring to high-precision aerospace testing.

Furthermore, to address the impact of ambient temperature changes on measurement accuracy, the product can be equipped with a built-in high-precision temperature sensor according to user requirements. This built-in temperature sensor can real-time detect the ambient temperature around the accelerometer and feed the temperature data back to the signal processing system. The system then performs real-time compensation on the sensor's bias voltage and scale factor based on the detected temperature changes, effectively offsetting the measurement errors caused by temperature drift. This temperature compensation function significantly reduces the impact of ambient temperature fluctuations (ranging from -40℃ to the maximum high-temperature resistance of the product) on the sensor's performance, ensuring that the accelerometer maintains consistent measurement accuracy even in environments with large temperature variations.

With its comprehensive performance and flexible configuration, this high-temperature and anti-seismic accelerometer is widely applicable to a variety of fields, including aerospace (such as aircraft engine vibration testing, spacecraft attitude monitoring), automotive industry (such as engine vibration detection, vehicle collision testing), industrial manufacturing (such as high-temperature equipment vibration monitoring, pipeline vibration detection), and scientific research (such as material fatigue testing, structural vibration analysis). It provides a reliable and high-precision measurement solution for users in harsh environments, helping to improve the safety, stability, and operational efficiency of equipment and systems.

✭ Low noise, high resolution: The quartz accelerometer adopts a high-precision quartz resonant sensing element and an optimized signal processing circuit, which effectively suppresses thermal noise and external interference. The noise floor is as low as [0.001 g/√Hz], and the resolution can reach up to [0.0001 g]. It can accurately capture weak acceleration signals even in complex working environments, ensuring the accuracy and reliability of measurement data.

✭ Excellent environmental adaptability, optional temperature output: With a rugged structural design and advanced hermetic packaging technology, the product has outstanding resistance to vibration, impact, humidity and corrosion, and can stably operate in harsh environments such as -40℃~180℃, high humidity (≤95% RH) and strong vibration (≤20g RMS). Additionally, an optional built-in high-precision temperature sensor is available, which can real-time output temperature data to support temperature compensation of measurement results, further improving the adaptability to extreme temperature environments.

✭ Zero frequency DC response, current output, strong anti-interference ability: It supports zero-frequency DC response, which can accurately measure both static acceleration (such as gravitational acceleration) and dynamic acceleration (such as vibration acceleration), realizing full-range measurement without blind area. The current output mode (standard 4-20mA or custom current range) has strong anti-interference performance, which can effectively resist electromagnetic interference, voltage fluctuation and signal attenuation during long-distance transmission, ensuring stable and reliable signal transmission even in complex electromagnetic environments.

✭ High temperature resistance 180 ℃: The core components (quartz sensing element, internal circuit) are made of high-temperature resistant materials, and combined with special high-temperature packaging technology, the product can continuously work stably in a high-temperature environment of up to 180℃ without obvious performance degradation. It can fully meet the measurement needs of high-temperature scenarios such as aerospace engine testing, high-temperature equipment monitoring and industrial boiler systems.

✭ Can be customized according to customer needs: We provide flexible customization services to meet the diverse needs of different application scenarios. Customizable items include measurement range, output type (current, voltage, frequency), packaging size, installation method, temperature resistance grade, and whether to add a temperature sensor or other functional modules, providing a personalized and targeted measurement solution for customers.

1. Inclination testing of key infrastructure: It is widely used in the inclination monitoring and deformation early warning of large-scale infrastructure such as bridges, dams, oil wells and coal mines. For long-span bridges, it can real-time detect the inclination angle and structural deformation caused by vehicle load, temperature change and geological movement, helping relevant departments timely find potential safety hazards and ensure the structural safety and service life of bridges. For dams, it monitors the inclination and settlement of the dam body, effectively preventing safety accidents such as dam collapse caused by uneven settlement. In oil wells and coal mines, it is used to detect the inclination of wellbore and mining equipment, ensuring the normal operation of mining and oil extraction work and reducing the risk of equipment failure.

2. High-speed railway control system: In the high-speed railway operation control system, the quartz accelerometer plays a key role in real-time monitoring of the running state of the train and the track. It can accurately measure the acceleration and vibration of the train during operation, provide data support for the train's speed control, braking system and stability adjustment, and ensure the safe, stable and smooth operation of the high-speed train. At the same time, it can also monitor the track's settlement and deformation, helping to maintain the track's flatness and improve the running comfort and safety of the train.

3. Ship stability control: It is an important component of the ship stability control system, used to real-time detect the rolling, pitching and heaving acceleration of the ship in navigation. By collecting and analyzing the acceleration data, the system can timely adjust the ship's ballast, rudder angle and other parameters, effectively improving the ship's stability and anti-rolling performance, reducing the impact of waves and wind on the ship's navigation, and ensuring the safety of the ship, crew and cargo in complex marine environments.

Overall dimension of Type B

1. Superior Measurement Performance, Delivering High-Precision Data

Our quartz accelerometer is built with a high-precision quartz resonant sensing element, combined with an optimized low-noise signal processing circuit, which effectively suppresses thermal noise and external interference. With an ultra-low noise floor (as low as 0.001 g/√Hz) and high resolution (up to 0.0001 g), it can accurately capture even weak acceleration signals in complex working environments. The zero-frequency DC response design enables it to measure both static acceleration (such as gravitational acceleration) and dynamic acceleration (such as vibration acceleration) with full-range, no-blind-area measurement, ensuring that every set of data is accurate, reliable, and actionable-laying a solid foundation for your system control and decision-making.

2. Strong Environmental Adaptability, Suitable for Harsh Scenarios

We fully consider the diverse and harsh application environments of our customers, and adopt a rugged structural design and advanced hermetic packaging technology for our quartz accelerometer. It can stably operate in extreme conditions such as high temperature (up to 180℃), low temperature (-40℃), high humidity (≤95% RH), and strong vibration (≤20g RMS), with excellent resistance to impact, corrosion, and dust. Additionally, the optional built-in high-precision temperature sensor provides real-time temperature data for temperature compensation, effectively reducing the impact of ambient temperature fluctuations on measurement accuracy, ensuring consistent performance even in the most challenging working conditions.

3. Reliable Signal Transmission, Strong Anti-Interference Ability

Our quartz accelerometer adopts a standard current output mode (4-20mA, customizable), which has inherent advantages in anti-interference and long-distance transmission. Compared with voltage output sensors, it can effectively resist electromagnetic interference, voltage fluctuations, and signal attenuation during long-distance transmission, ensuring stable and reliable signal transmission even in complex electromagnetic environments (such as near high-power equipment, high-voltage lines). This reliability ensures that your measurement system can work stably for a long time without frequent maintenance or signal loss.

4. Flexible Customization, Tailored to Your Specific Needs

We understand that different application scenarios have unique requirements for accelerometers. Therefore, we provide comprehensive customization services to tailor the product to your specific needs. Customizable items include measurement range (0~1g to 0~100g), output type (current, voltage, frequency), packaging size, installation method, temperature resistance grade, and whether to add functional modules such as a temperature sensor. Our professional R&D team will work closely with you to provide personalized measurement solutions, ensuring that the product perfectly matches your application scenarios and maximizes its value.

5. Strict Quality Control, Long Service Life and High Reliability

Every quartz accelerometer we produce undergoes strict quality control and testing procedures-from the selection of raw materials (high-temperature resistant quartz crystals, high-quality alloy housings) to the production process (precision assembly, hermetic packaging), and finally to the final inspection (performance testing, environmental adaptability testing, reliability testing). We adhere to strict quality standards to ensure that each product has excellent stability and a long service life (average service life of more than 5 years under normal working conditions). At the same time, we provide professional after-sales service and technical support, promptly solving your problems in use and ensuring the continuous and stable operation of your equipment.

6. Widely Proven Applications, Trusted by Customers Worldwide

Our quartz accelerometer has been widely applied in various key fields, including bridge and dam inclination testing, high-speed railway control, ship stability control, aerospace engine monitoring, and coal mine wellbore detection. It has been tested and recognized by numerous customers worldwide, with a good reputation for reliability and performance. Choosing our product means choosing a proven, trusted solution that can meet your long-term measurement and control needs.

In summary, our quartz accelerometer integrates high precision, strong adaptability, reliable performance, and flexible customization. Whether you need high-precision measurement in harsh environments, stable signal transmission in complex scenarios, or a personalized solution tailored to your needs, we can provide you with the most suitable product and professional service. Choose our quartz accelerometer, and let us help you achieve more accurate, stable, and efficient operation of your system.

1. Core Sensing Mechanism: At the heart of this accelerometer lies a premium quartz flexible pendulum, composed of a quartz flexible beam and a pendulum bob. When the device is subjected to external acceleration, the pendulum bob, under the influence of inertia, produces an inertial force. This force acts on the quartz flexible beam, inducing elastic deformation within the beam itself. Importantly, the degree of this elastic deformation is directly proportional to the intensity of the applied acceleration, which serves as the fundamental basis for the subsequent conversion of mechanical signals into electrical signals.

2. Signal Conversion Process: The quartz flexible pendulum is integrated with a fixed electrode to form a capacitive sensing configuration. As the quartz flexible beam deforms due to the inertial force, the gap between the pendulum and the fixed electrode changes accordingly, leading to a subtle variation in the capacitance of the sensing structure. The accelerometer's internal high-precision detection circuit captures this minute capacitance change and transforms it into a current signal, thus achieving the conversion of mechanical acceleration (a mechanical quantity) into an electrical signal (an electrical quantity).

3. Closed-Loop Feedback Regulation: To guarantee high measurement accuracy and long-term stability, the accelerometer is equipped with a closed-loop control system. After the detection circuit converts the capacitance variation into a current signal, the feedback circuit processes this signal and generates a feedback force-either electromagnetic or electrostatic. This feedback force is equal in magnitude but opposite in direction to the inertial force acting on the pendulum, effectively pulling the pendulum back to its original equilibrium position. This process minimizes measurement errors that would otherwise arise from excessive deformation of the quartz beam.

4. Temperature Compensation (Optional): For accelerometers equipped with an optional built-in temperature sensor, the sensor continuously collects real-time ambient temperature data during operation. A dedicated temperature compensation algorithm then dynamically adjusts the accelerometer's bias and scale factor based on the collected temperature information. This adjustment effectively counteracts the impact of temperature fluctuations on the performance of the quartz material and internal circuits, ensuring that the accelerometer maintains stable measurement accuracy even in extreme temperature conditions.

In conclusion, the wide-range quartz accelerometer leverages the high sensitivity of its quartz flexible structure, the precision of its signal conversion process, and the stability of its closed-loop feedback system to achieve high-precision acceleration measurement in both static and dynamic scenarios. It is therefore well-suited for high-demand fields such as military inertial navigation and high-impact testing.

1. What is the temperature resistance range of the quartz accelerometer, and how to deal with measurement errors caused by temperature changes?

The standard temperature resistance range of our quartz accelerometer is -40℃~180℃. To solve the measurement error caused by temperature changes, we provide an optional built-in high-precision temperature sensor. The sensor can real-time detect the ambient temperature and feed back the data to the signal processing system, which performs real-time compensation on the bias voltage and scale factor of the accelerometer, effectively reducing the impact of temperature drift and ensuring measurement accuracy in a wide temperature range.

2. How to select the appropriate measurement range of the quartz accelerometer for different application scenarios?

The selection of the measurement range should be based on the maximum acceleration value of the measured object, and a certain safety margin (1.2-1.5 times the maximum measured acceleration) should be reserved to avoid overload damage to the sensor and ensure measurement accuracy. For example, for bridge inclination testing (static acceleration measurement, small acceleration value), a range of 0~1g or 0~2g is recommended; for high-speed railway vibration monitoring (dynamic acceleration measurement, large vibration amplitude), a range of 0~10g or 0~20g is suitable; for aerospace engine testing, a customized range of 0~50g or higher can be selected according to actual needs.

3. Is the quartz accelerometer suitable for harsh environments such as strong vibration and corrosion?

Yes. Our quartz accelerometer adopts a rugged structural design and advanced hermetic packaging technology. The shell is made of high-temperature resistant and corrosion-resistant alloy materials, and the internal is equipped with a damping buffer mechanism, which has excellent anti-vibration (≤20g RMS), impact resistance and corrosion resistance. It can stably operate in harsh environments such as high temperature, low temperature, high humidity (≤95% RH), strong vibration and corrosive media, and is widely used in oil wells, coal mines, aerospace and other harsh application scenarios.

4. What is the difference between the quartz accelerometer and other types of accelerometers (such as piezoelectric accelerometers)?

Compared with other accelerometers, the quartz accelerometer has obvious advantages: ① Higher precision and resolution, with ultra-low noise floor and stable output signal; ② Support zero-frequency DC response, which can measure both static and dynamic acceleration (piezoelectric accelerometers are mostly suitable for dynamic measurement); ③ Better environmental adaptability, especially high temperature resistance and anti-interference ability; ④ Longer service life and higher reliability, thanks to the stable performance of quartz crystals and strict quality control; ⑤ More flexible customization, which can be tailored to different application needs.

Hot Tags: High-temperature Accelerometer, China High-temperature Accelerometer manufacturers, suppliers, factory, q flex accelerometer, SG 2 Wide range Quartz Accelerometer, SG 6 Miniaturized Quartz Accelerometer, High temperature accelerometer, SG 3 Miniaturized Quartz Flexible Accelerometer, Miniaturized quartz accelerometer