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液位變送器生產(chǎn)|3151差壓液位變送器結構原理簡(jiǎn)介

A brief introduction to the structure and principle of 3151 differential pressure liquid level transmitter
西安華恒儀表制造廠(chǎng)家在立足西北自動(dòng)化工業(yè)控制生產(chǎn)的中,以自身核心,電路板設計和制造技術(shù),電容式壓力傳感器設計生產(chǎn)技術(shù).可以根據客戶(hù)要求，低成本對核心技術(shù)進(jìn)行延伸變形，實(shí)現個(gè)性化產(chǎn)品定制。主要產(chǎn)品有SMART（斯瑪特）系列壓力變送器、多參數變送器、流量器、溫度傳感器和物位（液位變送器廠(chǎng)家，為我國電力、石油、化工、冶金、水泥、礦業(yè)等行業(yè)提供了高性能價(jià)格比的工業(yè)自動(dòng)變送器廠(chǎng)家產(chǎn)品./液位變送器生產(chǎn)|3151差壓液位變送器結構原理簡(jiǎn)介
Based on the northwest automation industrial control production, Xi'an Huaheng instrument manufacturer, with its own core, circuit board design and manufacturing technology, capacitive pressure sensor design and production technology, can extend and deform the core technology according to the customer's requirements at low cost, and realize personalized product customization. The main products are smart (SMART) series pressure transmitter, multi parameter transmitter, flowmeter, temperature sensor and level (liquid level transmitter manufacturer, which provides high performance price ratio industrial automatic transmitter manufacturer products for China's power, petroleum, chemical, metallurgical, cement, mining and other industries
差壓液位變送器用于可以通過(guò)hart475手操器或HART 275手操器相互通訊，通過(guò)它們進(jìn)行設定和監控等。差壓液位變送器用于防止管道中的介質(zhì)直接進(jìn)入變送器里，感壓膜片與變送器之間靠注滿(mǎn)流體的毛細管連接起來(lái)。它用于測量液體、氣體或蒸汽的液位、流量和壓力，然后將其轉變成4～20mA DC信號輸出。3151差壓液位變送器的結構原理及工作性能
The differential pressure liquid level transmitter is used to communicate with each other through Hart 475 or Hart 275, and to set and monitor through them. The differential pressure liquid level transmitter is used to prevent the medium in the pipeline from entering the transmitter directly. The pressure sensing diaphragm and the transmitter are connected by a capillary filled with fluid. It is used to measure the liquid level, flow and pressure of liquid, gas or steam, and then convert it into 4-20mA DC signal output. Structure principle and performance of 3151 differential pressure liquid level transmitter
1）3151差壓液位變送器的結構原理。E－JA110A差壓液位變送器由單晶硅諧振式傳感器上的兩個(gè)H形振動(dòng)梁分別將差壓、壓力信號轉換為頻率信號送到脈沖計數器，再將兩頻率之差直接傳遞到微處理器進(jìn)行數據處理，經(jīng)D/A轉換器轉換為與輸入信號相對應的4～20mA輸出信號，并在模擬信號上疊加一個(gè)BRAIN/HART數字信號進(jìn)行通信[1]。膜盒組件中內置的特性修正存儲器主要存儲傳感器的環(huán)境溫度、靜壓及輸入/輸出特性等修正數據，經(jīng)微處理器運算，可使變送器獲得優(yōu)良的溫度特性、靜壓特性和輸出特性。/液位變送器生產(chǎn)|3151差壓液位變送器結構原理簡(jiǎn)介
1) The structure and principle of 3151 differential pressure liquid level transmitter. E-ja110a differential pressure liquid level transmitter transforms the differential pressure and pressure signals into frequency signals by two H-shaped vibration beams on the single crystal silicon resonant sensor and sends them to the pulse counter, and then directly transmits the difference between the two frequencies to the microprocessor for data processing. After the D / a converter, it is converted into 4-20mA output signal corresponding to the input signal, and a brain / Hart is superposed on the analog signal Digital signal for communication [1]. The built-in characteristic correction memory in the capsule module mainly stores the correction data such as the ambient temperature, static pressure and input / output characteristics of the sensor. Through microprocessor operation, the transmitter can obtain excellent temperature, static pressure and output characteristics.
通過(guò)I-O口與外部設備（如手持智能終端BT200或275以及DCS中的帶通信功能的I/O卡）以數字通信方式傳遞數據，即高頻2.4kHz（BRAIN協(xié)議）或1.2kHz（HART協(xié)議）數字信號疊加在4～20mA信號線(xiàn)上。在進(jìn)行通信時(shí)，頻率信號對4～20mA的信號不產(chǎn)生任何擾動(dòng)影響，變頻器工作原理見(jiàn)圖1。
Through I-O port and external equipment (such as BT200 or 275 handheld intelligent terminal and I / O card with communication function in DCS), data is transmitted in digital communication mode, i.e. high frequency 2.4khz (brain protocol) or 1.2kHz (HART Protocol) digital signals are superimposed on 4-20mA signal line. During the communication, the frequency signal does not produce any disturbance to the 4-20mA signal, and the working principle of the frequency converter is shown in Figure 1.
2）3151差壓液位變送器的工作性能主要有：?jiǎn)尉Ч柚C振式傳感器；過(guò)程連接與其他產(chǎn)品兼容，實(shí)現*佳測量；超低功耗，單只靜態(tài)時(shí)0.096W，滿(mǎn)量程功耗為0.48W，輸出電流內部限制功耗為0.6W；高穩定性和高可靠性；完善的自診斷及遠程設定通信功能；外部零點(diǎn)/量程調校。
2) The performance of 3151 differential pressure liquid level transmitter mainly includes: single crystal silicon resonant sensor; process connection is compatible with other products to achieve * good measurement; ultra-low power consumption, single static 0.096w, full range power consumption 0.48w, output current internal limit power consumption 0.6W; high stability and reliability; perfect self diagnosis and remote setting communication function; external zero / range adjustment 。
3151差壓液位變送器自診斷故障處理
Self diagnosis troubleshooting of 3151 differential pressure liquid level transmitter
采用微型計算機技術(shù)的3151差壓液位變送器具有十分完整的自診斷功能。如自診斷時(shí)發(fā)現錯誤，儀表頭的內藏指示計將顯示錯誤代碼，然后根據所顯示的錯誤代碼，查明故障情況。如測量值出現異常，應先確定是被測流體變化異常還是測量系統出錯。如確認是測量系統出錯，需分別從運行狀況、安裝環(huán)境和變送器自身等方面著(zhù)手檢查，采取相應措施解決。
3151 differential pressure liquid level transmitter with microcomputer technology has very complete self diagnosis function. If an error is found during self diagnosis, the embedded indicator in the instrument head will display the error code, and then find out the fault condition according to the displayed error code. If the measured value is abnormal, it is necessary to determine whether the measured fluid is abnormal or the measurement system is wrong. If it is confirmed that the measurement system is in error, it is necessary to check the operation condition, installation environment and transmitter itself, and take corresponding measures to solve the problem.
1）當3151差壓液位變送器輸出顯示超出規定參數值時(shí)，先看儀表頭內藏指示計有無(wú)錯誤代碼顯示。若無(wú)錯誤代碼顯示，且電源接線(xiàn)也正確，可檢查平衡閥是否完全關(guān)閉和高/低壓閥是否完全開(kāi)啟，以及測壓部分導壓管等處有無(wú)泄露和高/低壓測壓管連接是否正確。若以上內容均無(wú)問(wèn)題，*后進(jìn)行調零，故障即可解決[2-3]。/液位變送器生產(chǎn)|3151差壓液位變送器結構原理簡(jiǎn)介
1) When the output display of 3151 differential pressure liquid level transmitter exceeds the specified parameter value, first check whether there is error code display on the indicator hidden in the instrument head. If there is no error code display and the power wiring is correct, check whether the balance valve is fully closed and the high / low pressure valve is fully open, and whether there is leakage at the pressure measuring part of the impulse pipe and whether the high / low pressure pipe is connected correctly. If there is no problem with the above content, * and then zero, the fault can be solved [2-3].
2）當3151差壓液位變送器無(wú)輸出信號或輸出值與實(shí)際流量不相符或被測流量變化而輸出信號無(wú)相應變化時(shí)，先看儀表頭內藏指示計有無(wú)錯誤代碼顯示，若無(wú)自診斷錯誤代碼提示，且電源接線(xiàn)也正確，則需進(jìn)一步檢查電源電壓是否正常及負載電阻連接是否正確，檢查測壓部分的導壓管有無(wú)壓力泄露。若仍查找不出原因，則應仔細檢查變送器回路連線(xiàn)，判斷是否因斷線(xiàn)或布線(xiàn)錯誤引起的故障[4]。儀表的故障處理一般遵循由簡(jiǎn)單到復雜的原則，3151差壓液位變送器因其優(yōu)良的性能，在實(shí)際使用中所出現的各類(lèi)故障通常都與被測流體、運行環(huán)境等外部因素有關(guān)。譬如出現零位經(jīng)常變動(dòng)或指示值不準時(shí)，很可能是因變送器測壓部分滯留氣泡或夾帶有不純的被測流體等雜質(zhì)，這時(shí)松開(kāi)排液/氣螺釘，排空滯留氣體或雜質(zhì)，故障即可解決。/液位變送器生產(chǎn)|3151差壓液位變送器結構原理簡(jiǎn)介
2) When there is no output signal of 3151 differential pressure level transmitter or the output value does not match the actual flow or the output signal does not change due to the change of measured flow, first check whether there is error code display on the indicator hidden in the instrument head. If there is no self diagnosis error code prompt and the power supply wiring is correct, further check whether the power supply voltage is normal and the load resistance connection is correct. Check Whether there is pressure leakage in the impulse pipe of the pressure measuring part. If the cause still cannot be found, carefully check the transmitter circuit wiring to determine whether the fault is caused by disconnection or wiring error [4]. The fault treatment of the instrument generally follows the principle from simple to complex. Because of its excellent performance, all kinds of faults in actual use are usually related to external factors such as the measured fluid, operation environment, etc. For example, if the zero position often changes or the indication value is not on time, it is likely that the air bubble is trapped in the pressure measuring part of the transmitter or impurities such as impure measured fluid are entrained. At this time, loosen the drain / gas screw, empty the trapped gas or impurities, and the fault can be solved.
華恒變送器廠(chǎng)家研發(fā)出傳感器和智能電路板兩項核心技術(shù)，不僅所有產(chǎn)品的核心部件技術(shù)全部掌握，工業(yè)自動(dòng)變送器廠(chǎng)家的精確度也在不斷提高，由0.2級提高到0.1級。還可通過(guò)對所掌握核心技術(shù)進(jìn)行延伸，變形出測流量、測溫度的其他產(chǎn)品。
Huaheng transmitter manufacturers have developed two core technologies, sensor and intelligent circuit board. Not only do they master all the core component technologies of all products, but also the accuracy of industrial automatic transmitter manufacturers is constantly improving, from level 0.2 to level 0.1. Through the extension of the core technology, other products for measuring flow and temperature can be deformed.

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液位變送器選型   液位變送器生產(chǎn)原理   3151液位變送器選型