What types of pressure transmitters are commonly used?Presumably,many people are not very clear,so there is a certain need to introduce,Xi'an Huaheng Instrument Manufacturing Co.,Ltd.introduced:

 

　　1．表壓型壓力變送器：

　　表壓型壓力變送器是以當(dāng)?shù)卮髿鈮鹤鳛閰⒖剂泓c的壓力變送器。

 

　　1.Surface pressure transmitter:

　　Surface pressure transmitter is a pressure transmitter with local atmospheric pressure as reference zero.

 

　　2．絕對壓力變送器：

　　絕對壓力變送器是以真空度為參考零點的一款壓力變送器。在使用過程中，傳感器的參考零點可以隨地點地域的變換而自動調(diào)整無需校正。外形與表壓型壓力變送器無二致。

 

　　2.Absolute pressure transmitter:

　　Absolute pressure transmitter is a pressure transmitter with vacuum as reference zero.In the process of using,the reference zero of the sensor can be adjusted automatically with the change of location and region without correction.The shape of the pressure transmitter is identical to that of the surface pressure transmitter.

 

　　3．差壓變送器：

　　差壓變送器是測量兩壓腔之間所受壓力差值的壓力變送器，差壓變送器分別有“+”和“-”兩個壓腔。分別承接兩作為比較值的壓力，通常把壓力較大的一端作為“+”壓腔。需要特別注意的是在訂購差壓傳感器時，請注意差壓變送器特有的一項參數(shù)----耐受靜壓。在應(yīng)用過程中，高靜壓低差壓的使用現(xiàn)場屢見不鮮。訂購的差壓變送器所受靜壓不宜超出該差壓變送器的耐受靜壓值，否則，很容易損壞。

 

　　3.Differential pressure transmitter:

　　Differential pressure transmitter is a pressure transmitter which measures the pressure difference between two pressure chambers.Differential pressure transmitter has two pressure chambers'+'and'-',respectively.Take two pressure as the comparative value separately.Usually,one end of the larger pressure is used as a'+'pressure chamber.It should be noted that when ordering differential pressure transducers,please pay attention to a specific parameter of differential pressure transducers-static pressure tolerance.In the application process,high hydrostatic pressure and low differential pressure are common in the field.The static pressure of the ordered differential pressure transmitter should not exceed the tolerance static pressure value of the differential pressure transmitter,otherwise,it is easy to damage.

 

　　4．投入/插入式液位變送器：

　　液位變送器分為投入式和插入式兩種，兩種形式無二致，都是把所受壓力轉(zhuǎn)換為液深。當(dāng)水深為1m時，變送器所受壓力為10KPa,訂購此類傳感器時就注意：

　　（1）所測量液體密度應(yīng)告知生產(chǎn)單位。

　　（2）當(dāng)測量介質(zhì)具有腐蝕性時應(yīng)告知生產(chǎn)單位。

　?。?）當(dāng)測量介質(zhì)溫度超出-10℃和60℃時就告知生產(chǎn)單位。

 

　　4.Input/insert level transmitter:

　　The level transmitter can be divided into two types:the input type and the insertion type.The two forms are identical.They all convert the pressure to the depth of the liquid.When the water depth is 1 m,the pressure on the transmitter is 10 KPa.When ordering such sensors,pay attention to:

　　(1)The liquid density measured shall be notified to the production unit.

　　(2)When the measuring medium is corrosive,the production unit shall be informed.

　　(3)When the temperature of the measured medium exceeds-10~C and 60~C,the manufacturer will be informed.

 

　　5.中高溫壓力變送器：

　　針對測量現(xiàn)場環(huán)境溫度過高或者測量介質(zhì)溫度過高，必須使用中高溫壓力變送器，該變送器具有較好的零點溫度系數(shù)和靈敏度溫度系數(shù)，在溫度較高的環(huán)境下能夠保證測量精度。在訂購該類型變送器時須告知測量介質(zhì)溫度和環(huán)境溫度，以為方便制作方合理應(yīng)對。

 

　　5.Medium and high temperature pressure transmitters:

　　In view of the high ambient temperature or the high medium temperature in the measurement field,the medium and high temperature pressure transmitter must be used.The transmitter has better zero temperature coefficient and sensitivity temperature coefficient,and can guarantee the measurement accuracy in the high temperature environment.When ordering this type of transmitter,the measurement medium temperature and ambient temperature should be notified so as to facilitate the manufacturer to respond reasonably.