| 3151型智能液位變送器現(xiàn)場校驗的必要性 |
| 信息來源： 液位變送器廠家 | 2020-06-11 點擊量： 5741 |
3151型智能液位變送器現(xiàn)場校驗的必要性/ 壓力（差壓）液位變送器是一連生產(chǎn)歷程主動化中歷程檢測和控制體系的重要構(gòu)成部門。其作用是將壓力等被測工藝參數(shù)轉(zhuǎn)換成相應(yīng)的電（氣）同一尺度信號，然后將此信號送至別的單位以實現(xiàn)對液位測量的過程中上述工藝參數(shù)的主動檢測或主動調(diào)治。
The necessity of field calibration of 3151 intelligent liquid level transmitter / pressure (differential pressure) liquid level transmitter is an important part of the process detection and control system in the process of production process automation. Its function is to convert the measured process parameters such as pressure into the corresponding electrical (gas) signal of the same scale, and then send this signal to other units to realize the active detection or adjustment of the above process parameters in the process of liquid level measurement.
現(xiàn)場總線系統(tǒng)作為一種數(shù)字式通信網(wǎng)絡(luò)，使過去采用點到點式的模擬量信號傳輸變?yōu)槎帱c一線的串行數(shù)字式傳輸。因而，現(xiàn)場總線型智能壓力/差壓液位變送器大幅度減少了系統(tǒng)中的模擬信號， 從而幾乎消除了回路的誤差。并且全數(shù)字化雙向通信在提高了系統(tǒng)的測量和控制精度的同時，也使系統(tǒng)組態(tài)和調(diào)試更加方便。智能壓力/差壓液位變送器功能模塊的設(shè)定，數(shù)據(jù)的傳輸交換完全可以通過數(shù)字通訊工具或上位機交互實現(xiàn)。
As a kind of digital communication network, fieldbus system has changed the analog signal transmission from point-to-point to serial digital transmission. Therefore, the field bus type intelligent pressure / differential pressure liquid level transmitter greatly reduces the analog signal in the system, thus almost eliminating the loop error. And full digital two-way communication not only improves the measurement and control accuracy of the system, but also makes the system configuration and debugging more convenient. The setting of intelligent pressure / differential pressure liquid level transmitter function module and data transmission and exchange can be completely realized by digital communication tool or upper computer interaction.
3151型智能液位變送器現(xiàn)場校驗的必要性/ 應(yīng)根據(jù)需要選擇。
The necessity of field calibration of 3151 intelligent liquid level transmitter / it should be selected according to the needs.
壓力/差壓液位變送器需要裝在設(shè)備下部，投入式液位計需要裝在設(shè)備上部；
The pressure / differential pressure level transmitter shall be installed at the lower part of the equipment, and the input type level gauge shall be installed at the upper part of the equipment;
壓力/差壓液位變送器安裝相對復(fù)雜，投入式液位計便于安裝；
The installation of pressure / differential pressure level transmitter is relatively complex, and the input level meter is convenient for installation;
壓力/差壓液位變送器可以測量帶壓儲罐液位，投入式液位計只能測常壓（敞口）容器；\
The pressure / differential pressure liquid level transmitter can measure the liquid level of the tank with pressure, and the input liquid level meter can only measure the atmospheric (open) container\
容器內(nèi)的情況復(fù)雜（如水流、攪拌）對壓力/差壓液位變送器的影響較小，投入式液位計要求容器內(nèi)比較安靜。
The complex situation in the vessel (such as water flow and agitation) has little influence on the pressure / differential pressure level transmitter. The input level gauge requires quietness in the vessel.
所以對回路中輸出信號要由數(shù)字通訊工具，在應(yīng)用現(xiàn)場可以由上位機來實現(xiàn)數(shù)據(jù)的監(jiān)控和調(diào)整。同時由于不存在模擬信號的傳輸，所以對現(xiàn)場總線型智能壓力/差壓液位變送器的校驗便變成了對單一過程變量量值的校準(zhǔn)和溯源。亦即由標(biāo)準(zhǔn)過程變量標(biāo)準(zhǔn)源對現(xiàn)場總線型智能3151型智能液位變送器現(xiàn)場校驗的必要性/壓力/差壓液位變送器施加標(biāo)準(zhǔn)過程變量，通過數(shù)字通訊工具或上位機監(jiān)控現(xiàn)場總線型智能壓力/差壓液位變送器的數(shù)字輸出（可以設(shè)定與標(biāo)準(zhǔn)過程變量標(biāo)準(zhǔn)源相同的計量單位），通過對單一的過程變量量程，線性的對比對現(xiàn)場總線型智能壓力/差壓液位變送器進(jìn)行校準(zhǔn)。
Therefore, the output signal in the loop should be monitored and adjusted by the digital communication tool and the upper computer in the application field. At the same time, because there is no analog signal transmission, the calibration of Fieldbus intelligent pressure / differential pressure level transmitter becomes the calibration and traceability of single process variable value. That is to say, standard process variable is applied to the necessity of field verification of Fieldbus intelligent 3151 level transmitter by standard process variable source / pressure / differential pressure level transmitter, and the digital output of Fieldbus intelligent pressure / differential pressure level transmitter is monitored by digital communication tool or upper computer (the same measurement unit as standard process variable source can be set), and The intelligent pressure / differential pressure level transmitter based on fieldbus is calibrated by single process variable range and linear comparison.
由于現(xiàn)場總線回路是完全的數(shù)字信號回路，所以對回路中輸出信號要由數(shù)字通訊工具，在應(yīng)用現(xiàn)場可以由上位機來實現(xiàn)數(shù)據(jù)的監(jiān)控和同時由于不存在模擬信號的傳輸，所以對現(xiàn)場總線型智能壓力/差壓液位變送器的校驗便變成了對單一過程變量量值的校準(zhǔn)和溯源。亦即由標(biāo)準(zhǔn)過程變量標(biāo)準(zhǔn)源對現(xiàn)場總線型智能壓力/差壓液位變送器施加標(biāo)準(zhǔn)過程變量，通過數(shù)字通訊工具或上位機監(jiān)控現(xiàn)場總線型智能壓力/差壓液位變送器的數(shù)字輸出（可以設(shè)定與標(biāo)準(zhǔn)過程變量標(biāo)準(zhǔn)源相同的計量單位），通過對單一的過程變量量程，線性的對比對現(xiàn)場總線型智能壓力/差壓液位變送器進(jìn)行校準(zhǔn)。
Because the field bus loop is a complete digital signal loop, the output signal in the loop should be monitored by digital communication tools. In the application field, the upper computer can realize data monitoring and at the same time, because there is no analog signal transmission, the verification of the field bus intelligent pressure / differential pressure liquid level transmitter becomes the calibration and traceability of a single process variable value. That is to say, the standard process variable is applied to the field bus intelligent pressure / differential pressure level transmitter by the standard process variable source, and the digital output of the field bus intelligent pressure / differential pressure level transmitter is monitored by the digital communication tool or the upper computer (the same measurement unit as the standard process variable source can be set), and the linear comparison is made by the single process variable range Calibrate the fieldbus type intelligent pressure / differential pressure liquid level transmitter.
具體校驗時分為現(xiàn)場總線網(wǎng)段接入和實驗室單表校驗。對于現(xiàn)場總線網(wǎng)段，數(shù)字通訊工具可以在總線網(wǎng)段的任何一個方便的位置連接，通常是在智能壓力/差壓液位變送器和現(xiàn)場總線接線盒中接入.
The specific calibration time is field bus network access and laboratory single meter calibration. For fieldbus network segment, digital communication tools can be connected at any convenient position of the bus network segment, usually in intelligent pressure / differential pressure level transmitter and Fieldbus junction box
3151高溫投入式液位變送器特點：
3151 high temperature input liquid level transmitter features:
高精度測量，不受被測介質(zhì)起泡、沉積、電氣特性的影響寬范圍的溫度補償
High precision measurement, not affected by the foaming, deposition and electrical characteristics of the measured medium, wide range of temperature compensation
固態(tài)結(jié)構(gòu)，無可動部件，高可靠性，使用壽命長，從水、油到粘度較大的糊狀都可以進(jìn)行
Solid structure, no movable parts, high reliability, long service life, from water and oil to paste with high viscosity
穩(wěn)定性好，精度高，可在高溫環(huán)境下工作
Good stability, high precision, can work in high temperature environment
直接投入到被測介質(zhì)中，安裝使用相當(dāng)方便
It is directly put into the tested medium, which is quite convenient for installation and use
華恒儀表制造廠家憑借專業(yè)技術(shù)優(yōu)勢，可靠穩(wěn)定的產(chǎn)品質(zhì)量，堅持大限度的滿足用戶的需求是企業(yè)發(fā)展的動力源泉，以優(yōu)質(zhì)專業(yè)的服務(wù)為我國電力、石油、化工、冶金、水泥、礦業(yè)、市政、造紙等行業(yè)提供了高性能價格比的工業(yè)自動化儀表產(chǎn)品。為我國自動化儀表的發(fā)展做出了重要貢獻(xiàn)。
Relying on the advantages of professional technology, reliable and stable product quality, Huaheng instrument manufacturer insists on meeting the needs of users to a large extent, which is the power source of enterprise development. With high-quality professional services, it provides industrial automation instrument products with high performance price ratio for China's electric power, petroleum, chemical industry, metallurgy, cement, mining, municipal administration, papermaking and other industries. It has made an important contribution to the development of automatic instruments in China.
關(guān)鍵詞推薦:
液位變送器
投入式靜壓變送器
工業(yè)現(xiàn)場管理
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