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作為在立足西北,恩澤西北地區(qū)工業(yè)自動(dòng)化進(jìn)程,在在西安液位變送器廠家生產(chǎn)的過(guò)程中,時(shí)長(zhǎng)會(huì)提到3151雙法蘭液位計(jì)在密閉管上的安裝特點(diǎn)的使用,差壓液位變偶送器是在石油化工,市政控制中都有非常重要的使用.

雙法蘭液位變送器在密閉管上的安裝的原理：
雙法蘭液位計(jì)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流體的毛細(xì)管連接起來(lái)。它用于測(cè)量液體、氣體或蒸汽的液位、流量和壓力，然后將其轉(zhuǎn)變成4～20mA DC信號(hào)輸出。
差壓液位變送器產(chǎn)品特點(diǎn)
●逐臺(tái)進(jìn)行模擬“在線運(yùn)行”考核，保證變送器在極限環(huán)境溫度、介質(zhì)溫度和工作壓力（包括正壓或真空）下，穩(wěn)定而可靠地工作。
  ●采用“動(dòng)態(tài)型面”遠(yuǎn)傳膜片結(jié)構(gòu)，超載后膜片不會(huì)受損；長(zhǎng)期工作后精度不會(huì)發(fā)生變化。
  ●選用全熔焊和剛性密封結(jié)構(gòu)的灌充系統(tǒng)，根除了漏油現(xiàn)象的發(fā)生。
  ●設(shè)計(jì)新穎的毛細(xì)管結(jié)合部件，使毛細(xì)管得到可靠的保護(hù)，在現(xiàn)場(chǎng)使用不易折斷。
  ●品種、形式和尺寸多樣的遠(yuǎn)傳裝置，以及豐富的灌充液種類，可以滿足各種不同場(chǎng)合的測(cè)量需要。
  ●可提供各種特殊需要產(chǎn)品，包括高溫、高真空、快響應(yīng)和不等長(zhǎng)毛細(xì)管（差值≤4.5米）遠(yuǎn)傳差壓變送器。雙法蘭液位變送器在密閉管上的安裝時(shí)產(chǎn)品有以下特點(diǎn):
When the double flange liquid level transmitter is installed on the closed pipe, the product has the following characteristics:
1、結(jié)構(gòu)簡(jiǎn)單牢固，無(wú)可動(dòng)部件，可靠性高，長(zhǎng)期運(yùn)行十分可靠。
1. The structure is simple and firm, no moving parts, high reliability, long-term operation is very reliable.
2、安裝簡(jiǎn)單，維護(hù)十分方便。
2. It is easy to install and maintain.
3、檢測(cè)傳感器不直接接觸被測(cè)介質(zhì)，性能穩(wěn)定，壽命長(zhǎng)。
3. The sensor has stable performance and long service life without direct contact with the measured medium.
4、測(cè)量的是與流量成正比的脈沖信號(hào)，無(wú)零點(diǎn)漂移，精度高。
4. The pulse signal measured is proportional to the flow rate, with no zero drift and high accuracy.
5、測(cè)量范圍寬，量程比可達(dá)1: 50。
5. The measurement range is wide and the range ratio can reach 1:50.
6、壓力損失較小，運(yùn)行費(fèi)用低，更具節(jié)能意義。
6. The pressure loss is small, the operation cost is low, and it is more energy-saving.
7、采用超低功耗技術(shù)，電池供電可運(yùn)行兩年以上。
7. With ultra-low power consumption technology, the battery can run for more than two years.
8、溫壓補(bǔ)償一體化設(shè)計(jì)，同時(shí)顯示流量值與累積流量值，溫度、壓力值，不必輪流切換。
8. Temperature and pressure compensation integrated design, display flow value and cumulative flow value, temperature and pressure value at the same time, do not need to switch in turn.
3151雙法蘭液位計(jì)在密閉管上的安裝特點(diǎn)/安裝注意事項(xiàng)
Installation features of 3151 double flange liquid level gauge on closed pipe
1、在線密度計(jì)傳感器部分間距最少為200mm,直徑為50mm, 現(xiàn)場(chǎng)不能小于這些尺寸安裝,如選擇彎曲型密度計(jì),請(qǐng)測(cè)量好可以伸進(jìn)管內(nèi)的法蘭和長(zhǎng)度尺寸。
1. The distance between sensors of on-line densitometer shall be at least 200 mm and the diameter shall be 50 mm. The installation shall not be less than these dimensions on site. If bending densitometer is selected, please measure the flange and length that can be extended into the pipe.
2、現(xiàn)場(chǎng)液體必須保持沒(méi)過(guò)兩個(gè)測(cè)量傳感器,法蘭到第一個(gè)傳感器的距離可選。
2. The liquid on site must not exceed two measuring sensors, and the distance from the flange to the first sensor is optional.
3、管道安裝時(shí)需讓液體從最下面?zhèn)鞲衅髦逻M(jìn)入液體，或者從最上面?zhèn)鞲衅鞯纳厦孢M(jìn)入液體，不要從中間進(jìn)入液體。管道安裝通液體時(shí)，管道閥門或者彎頭部分至少留出30CM液體緩沖距離。
3. When installing the pipeline, the liquid should be allowed to enter the liquid from the bottom sensor or from the top of the top sensor. Do not enter the liquid from the middle. When the pipeline is installed with liquid, at least 30cm liquid buffer distance shall be reserved at the valve or elbow part of the pipeline.
4、配備電源為24VDC輸出4-20mA信號(hào)如需接二次用表，需接24V“+”
4. It is equipped with a power supply of 24 VDC to output 4-20mA signal. If the secondary meter needs to be connected, it needs to be connected with 24 V "+"
5、現(xiàn)場(chǎng)環(huán)境如果外部有腐蝕性液體，請(qǐng)做好防護(hù)措施。如果有雷擊危險(xiǎn)，請(qǐng)?jiān)谥車龊靡匮b置。
5. If there is corrosive liquid outside the site environment, please take protective measures. If there is a lightning strike around the device, please do it properly.
6、如需拆卸做清洗時(shí)，拆裝時(shí)請(qǐng)保證傳感器膜片不受到碰撞及其它損壞。
6. If it needs to be disassembled for cleaning, please ensure that the sensor diaphragm is not damaged by collision and other damage.
7、請(qǐng)勿在高出5Mpa情況下使用。
7. Do not use it above 5MPa.
8、如果需要調(diào)整量程需要用手持器,  技術(shù)問(wèn)題請(qǐng)聯(lián)系華恒.
8. If you need to adjust the range, you need to use a handheld, please contact Huaheng for technical problems

雙法蘭液位變送器在密閉管上使用采用先進(jìn)的隔離型擴(kuò)散硅敏感元件或陶瓷電容壓力敏感傳感器制作而成，將靜壓轉(zhuǎn)換為電信號(hào)，再經(jīng)過(guò)溫度補(bǔ)償和線性修正，轉(zhuǎn)化成標(biāo)準(zhǔn)電信號(hào)（一般為4～20mA/1～5VDC）的一種測(cè)量液位的壓力傳感器，又可以稱之為“靜壓液位計(jì)、液位變送器、液位傳感器、水位傳感器”。