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    LM precision measurement sensor inspects IC chips seated in nests

    Solve Applications with the Tightest Tolerances

    Precise measurement applications can be some of the most challenging to solve. Extremely tight tolerance requirements demand a reliable solution that can measure parts in micrometers to detect the smallest variations in part size, thickness, orientation, placement, and more.

    Ensuring parts meet strict quality standards can help reduce problems downstream and reduce the risk of product recall due to imperfect parts.

    Challenges
    Key Considerations
    Featured Products
    Challenges of Precision Measurement
    Q4X laser measurement sensors inspect a metal bracket
    Real World Conditions

    Real world conditions—including variations in target color and reflectivity, fluctuations in ambient temperature, and vibration from improper mounting—can make precise measurement challenging, even for laser sensors that perform reliably in perfect laboratory conditions.

    Even seemingly insignificant details, like pushing buttons on the sensor, can negatively impact the device's precision. 

    Therefore, it is important to understand the factors that can impact measurement precision in order to identify a solution that can overcome these challenges.

    Keep reading to learn several key considerations to help you find the right sensor for your most precise measurement applications, or contact us to discuss your application with an expert.

    Considerations for Choosing Precision Measurement Sensor
    Q4X sensors detect small washers in an engine block
    Start with the Specifications

    WHY resolution isn't everything

    For precise applications, measurement in micrometers is essential. However, while resolution is very important for precise applications, resolution specifications only represent a sensor’s performance in “best case” conditions.

    Because of this, resolution specifications often do not provide a complete picture of a sensor’s capabilities in the real world and sometimes overstate sensor performance. 

    Therefore, it is important to consider the resolution specification in combination with other indicators of the sensor’scapabilities.

    In discrete sensing applications, it is also important to consider the sensor’s repeatability (how reliably the sensor can repeat the same measurement in the same conditions) and the minimum object separation (the minimum distance a target must be from the background to be reliably detected).

    For analog applications, it is important to consider both the sensor’s resolution and its linearity (how closely the analog output approximates a straight line across the measuring range) to ensure a reliable output across the full range of the sensor.

    When combined with resolution, these additional specifications provide a more complete picture of sensor performance in the real world.

    LM precision measurement sensor measures crankshaft runout
    Understand Real World Challenges to Precision

    Real World Targets and Temperature Fluctuation

    Real world targets are often difficult to measure consistently. Depending on the industry and application, objects may be very dark (low reflectivity), glossy (high reflectivity), or contain multiple color transitions—all of which can significantly impact measurement reliability.

    To mitigate this issue, some laser measurement sensors like the LM Series feature automatic gain adjustment, which means the sensor dynamically reduces or increases its power based on the reflectivity of the target. This ensures targets of varying colors and reflectivity are all measured reliably.

    Precision measurement can also be greatly affected by changes in ambient temperature. For some sensors, temperature fluctuations of even a few degrees up or down throughout the day can cause the sensor’s measurement error to double, eliminating any benefit of a precision sensor. Therefore, it is essential to choose a sensor with high thermal stability for reliable measurement regardless of the surrounding temperatures.

    LM precision measurement sensor measures crankshaft runout
    LM precision measurement sensor monitors cardboard thickness
    Choose the Right Configuration and Mounting

    Remote Configuration & Monitoring for Precision

    Finally, choosing the right configuration and mounting options can help ensure the precision of a sensor.

    Mounting stability is crucial for a precision measurement sensor. Even with the best specifications, if a precision sensor isn’t mounted securely, measurements will not be reliable. To reduce the risk of measurement error, ensure that the sensor can be securely fastened to the mounting fixture and kept away from excessive vibration.

    Remote configuration and monitoring options, via IO-Link or Banner's RSD1 remote sensor display, enable the sensor to be configured without pushing buttons directly on the device. This reduces the risk of button movement interfering with the sensor's precision. 

    Remote configuration and monitoring options also enable users to gather health and performance data from the sensor, which allows manufacturers to predict maintenance requirements and make data-driven decisions.   

    Featured Products
    LM Series Precision Measurement Sensor
    LM Series

    Precision Measurement Sensor

    LM系列高精準度量測感測器提供同級最佳性能表現，能在實際應用中提供穩定的表現，並有著精巧的外型以及簡單易用的使用者體驗。 

    • 精準的量測能力，可 0.004毫米解析度 
    • 0.5 ms反應時間以及0.25 ms取樣速度
    • 精巧的外型可以安裝在狹小的空間之中
    • 優異的熱穩定外殼以及穩固的安裝孔位，可以在實際應用中提供穩定的性能表現
    • 數位輸出帶IO-Link通訊以及4-20 mA電流類比輸出
    • IP67以及316不鏽鋼外殼，可以抵禦特定化學侵蝕環境
    • 選配的  遠端感測器螢幕 可以自機台外部監控及設定感測器
    Q4X Series Laser Measurement Sensor
    Q4X Series

    Problem-Solving Laser Measurement Sensor

    全方位、堅固的雷射距離感測器提供卓越的性能，並能夠檢測小於1毫米的距離變化。

    • 提供數位訊號、類比（0至10 V或4至20 mA）、透明物件和IO-Link型號
    • 可靠的感應工作距離：從25 mm到610 mm
    • 可以偵測各種目標顏色、材料和表面的距離變化
    • 雙重教導模式（反射光強度+距離變化）是防錯應用的理想選擇，不需要反射鏡就可偵測透明物件
    • 符合FDA食品級認證的不鏽鋼堅固外殼, 環境防護等級達到IP69K
    Q4X Series Laser Measurement Sensor
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