Fiber M fiber optic temperature sensors-INNO

高温および過酷な環境での温度監視のための Fiber M ファイバー温度センサーの応用

1、 Fiber M 光ファイバー温度センサーの一般的なモデル

Fiber M ファイバー温度センサーには、さまざまなアプリケーションシナリオに適合する複数のモデルがある場合があります. 現在の市場では, 一部の光ファイバー温度センサーモデルには、独自の性能パラメータと適用可能な範囲があります。. 例えば, モデル AF28- オプティック3000X2 (在庫番号: M241812）1，マルチモード光ファイバーを使用して高電圧絶縁を提供します, ケーシングはステンレス鋼素材で作られています, 産業環境の設置要件を満たすことができます. このモデルのセンサーのインターフェースは ST 光ファイバーインターフェースです, 取り付けが簡単で、高い耐干渉性能を備えています。. 全体, 過酷な環境での動作に非常に適しています. その温度測定範囲は、 -55 ℃ -+125 ℃, 温度測定誤差が以下である 0.5 全範囲℃. 温度測定分解能は±です。 0.1 ℃, 温度測定周期は 45 秒, プローブの温度範囲は -100 ℃ -+260 ℃, ファイバーの長さは50m以下です (マルチモードファイバー), インターフェース方式はSTインターフェースです, バッテリーの寿命は 4.5 年, 動作温度は -40 ℃ -+80 ℃, プローブのサイズは 8 (直径) mm× 200 (長さ) mm. 加えて, AF28-optic3000があります (図書館番号: M178113) モデル光ファイバー温度センサー 2, 温度精度は± 0.5 ℃, SC光ファイバーインターフェース, 温度測定範囲 -40 ℃ -+125 ℃または -40-+200 ℃ (ユーザーが選択可能), 温度分解能 12 ビット (0.0625 ℃), 温度測定速度は 10 秒または 45 秒 (ユーザーが選択可能). These different models can monitor temperature for different operating conditions under their respective parameters.

2、 Characteristics and requirements of temperature monitoring in high temperature and harsh environments

（1） Characteristics of temperature monitoring in high temperature and harsh environments
Environmental complexity
In high-temperature and harsh environments, there are often multiple complex factors involved. 例えば, around some industrial furnaces, in addition to high temperatures, there may also be pollutants such as dust and corrosive gases. Near the furnace of a steel smelting plant, a large amount of dust particles are emitted into the surrounding environment along with the hot air, which may adsorb onto the temperature sensor and interfere with its normal operation. その間, with the chemical reactions during the metallurgical process, corrosive gases such as sulfur dioxide are produced, posing a risk of corrosion to temperature sensors.
Leakage and volatilization of chemical raw materials are common in high-temperature chemical production environments. 例えば, after the leakage of acidic or alkaline chemical raw materials, the acidity and alkalinity of the surrounding environment will change, which has varying degrees of impact on the shell material and internal components of temperature sensors, and may lead to problems such as corrosion of the sensor shell and internal circuit short circuits.
Large temperature variation amplitude
The temperature fluctuation range in high-temperature environments can be very large. Taking the engine testing environment in the aerospace field as an example, the temperature rapidly rises from room temperature to thousands of degrees Celsius during engine start-up and operation. At the combustion chamber of the engine, the temperature can reach around 2000-3000 ℃, while outside the engine body, the temperature may be close to room temperature. Such a huge temperature difference places high demands on the adaptability of temperature monitoring equipment.
In some high-temperature kilns, the temperature inside the kiln needs to be precisely controlled between several hundred degrees and over a thousand degrees during ceramic firing. From the preheating stage of the kiln to different stages of firing, the temperature rise and stability need to be strictly monitored, with temperature changes ranging from tens of degrees Celsius to thousands of degrees Celsius, このような大きな変化の中でも高精度な測定を維持する必要がある.
干渉因子が存在する
高温環境では通常、強い電磁界干渉が発生します。. 電気機器製造の溶接工場内, 溶接装置は動作中に強い電磁場を生成します. 例えば, アーク溶接中, 電流強度が高い, 生成された電磁場は、通常の電子温度センサーの通信ラインに干渉する可能性があります。, データ送信の精度に影響を与える. 光ファイバー温度センサー用, 電磁干渉に対してはある程度の耐性がありますが、, この強力な電磁場環境では、他の電磁源からの干渉の可能性にも対処する必要があります。.
原子炉の近くなどの一部の特殊な高温環境では, 高温と核放射線に加えて, 強い磁場も発生するでしょう. この強力な磁場により、一部のセンサーの磁場に敏感なコンポーネントの動作状態が変化する可能性があります。. 温度センサーの設計がこの要素を完全に考慮していない場合, 測定誤差が起こりやすい.

（2）高温および過酷な環境における温度監視の要件
高温耐性
センサーは高温環境における極端な温度に耐えることができる必要があります. センサー自体が高温に耐えられない場合, 高温環境では損傷しやすい. 例えば, ガラス溶解工場で, 炉内の温度は約30℃に達することがあります。 1600 ℃, and sensors need to be directly or indirectly exposed to such high temperature environments. Their materials must be able to maintain stable physical and chemical properties at this temperature. This requires the structural materials of the sensor, such as the housing and internal sensing elements, to be made of high-temperature special materials. 例えば, using high-temperature resistant materials such as ceramics and high-temperature alloys as external protective covers for sensors or as carriers for internal key sensing components.
高い信頼性
Due to the difficulty of equipment maintenance in high temperature and harsh environments, temperature sensors need to have high reliability. This means that the probability of sensor failure during long-term operation is very low, and it can continuously and stably measure temperature. 例えば, 深海の熱水噴出孔付近の科学研究で, センサーは高温下で数か月、場合によっては数年にわたって継続的に動作する必要がある場合があります。, 高圧, 腐食性の高い水中環境. そこの水中の熱水の温度は、 300 ℃. センサーが頻繁に故障する場合, 研究データの損失につながるだけでなく、, しかし、一部の特殊な科学研究施設では多大な経済的損失や安全上のリスクを引き起こす可能性もあります。. そのため、センサーの設計と製造プロセスは非常に正確である必要があります。, 内部回路または光路構造は厳格な安定性テストを受ける必要があります.
高精度
In high-temperature and harsh environments, 多くの工業生産プロセスでは、非常に高い温度制御精度が必要です。. 半導体チップ製造におけるフォトリソグラフィー工程を例にとると、, even small temperature changes can affect the chemical reaction rate of photoresist and the accuracy of chip patterns. This process requires temperature error control within ± 1 ℃ in an environment of several hundred degrees Celsius. So temperature sensors need to be able to provide high-precision measurements to ensure product quality in production or experimentation. This requires the measurement principle and calibration algorithm of the sensor to be very accurate. 例えば, fiber optic temperature sensors use optical principles to improve temperature measurement accuracy through precise wavelength detection or light intensity measurement.
優れた抗干渉能力
前述したように, there are various interference factors in high-temperature and harsh environments. Sensors need to have good anti-interference ability to address these issues. 例えば, in the high-temperature processing environment of RF heating equipment, RF signals can interfere with surrounding electronic devices. Sensors should be able to accurately obtain temperature information under strong radio frequency interference. 光ファイバー温度センサー用, they have a natural advantage in resisting electromagnetic interference, but their design should also avoid the influence of other interference sources, such as using a special fiber optic protective layer to resist light leakage and the mixing of external interference light, while optimizing the internal signal processing circuit to improve the filtering ability of interference signals.

3、 Application case of Fiber M fiber optic temperature sensor in high temperature and harsh environment

石油化学産業
In the refining units of petrochemicals, there are numerous high-temperature reaction vessels and pipelines. 例えば, in the distillation process of crude oil, the internal temperature of the distillation tower can reach 300-400 ℃. Fiber M fiber optic temperature sensors can be installed inside the reactor or outside the pipeline to monitor temperature in real-time. Due to its corrosion resistance, 高温耐性, 電磁干渉耐性, it can work stably for a long time in environments filled with oil and gas, 高温, and corrosion risks. By accurately monitoring temperature, the distillation process of crude oil can be better controlled, improving the quality and yield of petroleum products. If traditional electronic temperature sensors are used, the oil and gas environment may pose a risk of explosion, and electronic components are easily corroded and damaged. 対照的に, fiber optic temperature sensors have higher safety and reliability.
Aerospace field
In the testing and operation monitoring of aircraft engines, the temperature around the turbine blades inside the engine is extremely high. 例えば, at the outlet of the combustion chamber of a high-performance jet engine, the gas temperature can exceed 2000 ℃. Fiber M fiber optic temperature sensors can measure temperature near the blades at such high temperatures, providing accurate temperature data for engine performance evaluation and optimization. Due to the complexity of the operating environment of aerospace equipment, including high-speed airflow, strong electromagnetic radiation, 等, the small size, high anti-interference ability, and high temperature resistance of fiber optic sensors make them ideal temperature monitoring devices. In the manufacturing process of composite material structures for aircraft, the drying and curing processes need to be carried out in a high-temperature environment. Fiber optic temperature sensors can accurately monitor the temperature to ensure the quality of composite materials.
metallurgical industry
During the smelting process in a steel furnace, the temperature at which the metal inside the furnace melts can reach 1500-1600 ℃. Fiber M fiber optic temperature sensors can adapt to such high temperature environments and monitor the temperature inside the furnace in real-time. Due to the presence of a large amount of dust, 振動, and electromagnetic interference in the smelting workshop, the non-contact measurement method, anti-interference ability, and high temperature resistance of fiber optic sensors enable them to work stably. Accurate temperature monitoring helps to control chemical reactions in the steelmaking process and improve the quality of steel. During the metal rolling process, the surface temperature of the high-temperature rolling mill also needs to be precisely controlled. Fiber optic temperature sensors can be installed near the rolling mill to provide temperature data for optimizing the rolling process.