Differential relationship between pressure transmitter and sensor?Xi'an Huaheng Instrument Manufacturing Co.,Ltd.Introduction:Sensors are devices or devices that can be measured and converted into usable output signals according to certain rules.They are usually composed of sensitive elements and conversion elements,such as thermocouples.

 

　　當(dāng)傳感器的輸出為規(guī)定的標(biāo)準(zhǔn)信號時，則稱為變送器。變送器的概念是將非標(biāo)準(zhǔn)電信號轉(zhuǎn)換為標(biāo)準(zhǔn)電信號的儀器，傳感器則是將物理信號轉(zhuǎn)換為電信號的器件，過去常講物理信號，現(xiàn)在其他信號也有了。

 

　　When the output of the sensor is a specified standard signal,it is called a transmitter.The concept of transmitter is an instrument that converts non-standard electrical signals into standard electrical signals.Sensors are devices that convert physical signals into electrical signals.In the past,physical signals were often talked about,but now other signals are available.

 

　　一次儀表指現(xiàn)場測量儀表或基地控制表，二次儀表指利用一次表信號完成其他功能：諸如控制，顯示等功能的儀表。

 

　　The primary instrument refers to the field measurement instrument or the base control table,while the secondary instrument refers to the instrument that uses the primary meter signal to complete other functions,such as control,display and other functions.

 

　　傳感器和變送器本是熱工儀表的概念。傳感器是把非電物理量如溫度、壓力、液位、物料、氣體特性等轉(zhuǎn)換成電信號或把物理量如壓力、液位等直接送到變送器。變送器則是把傳感器采集到的微弱的電信號放大以便轉(zhuǎn)送或啟動控制元件。

 

　　Sensors and transmitters are concepts of thermal instrumentation.Sensors convert non-electrical physical quantities such as temperature,pressure,liquid level,material and gas characteristics into electrical signals or send physical quantities such as pressure and liquid level directly to transmitters.The transmitter amplifies the weak electric signal collected by the sensor to transmit or start the control element.

 

　　或?qū)鞲衅鬏斎氲姆请娏哭D(zhuǎn)換成電信號同時放大以便供遠(yuǎn)方測量和控制的信號源。根據(jù)需要還可將模擬量變換為數(shù)字量。傳感器和變送器一同構(gòu)成自動控制的監(jiān)測信號源。不同的物理量需要不同的傳感器和相應(yīng)的變送器。

 

　　Or the non-electric input of the sensor can be converted into an electrical signal and amplified simultaneously for remote measurement and control.Analog data can also be converted to digital data as needed.Sensors and transmitters together constitute a monitoring signal source for automatic control.Different physical quantities require different sensors and corresponding transmitters.

 

　　還有一種變送器不是將物理量變換成電信號，如一種鍋爐水位計的“差壓變送器”，他是將液位傳感器里的下部的水和上部蒸汽的冷凝水通過儀表管送到變送器的波紋管兩側(cè)，以波紋管兩側(cè)的差壓帶動機(jī)械放大裝置用指針指示水位的一種遠(yuǎn)方儀表。

 

　　There is also a transmitter which does not convert physical quantities into electrical signals,such as a"differential pressure transmitter"of the boiler water level gauge.It is a remote instrument that transmits the condensate water of the lower part of the liquid level sensor and the upper part of the steam to the bellows of the transmitter through the instrumentation tube,and uses the differential pressure on both sides of the bellows to drive the mechanical amplifier device to indicate the water level with a pointer.

 

　　當(dāng)然還有把電氣模擬量變換成數(shù)字量的也可以叫變送器。以上只是從概念上說明傳感器和變送器的區(qū)別。

 

　　Of course,it can also be called a transmitter to convert electrical analog into digital.These are just conceptual differences between sensors and transmitters.