智能壓力/差壓/液位變送器Intelligent pressure/differential pressure/leve
特 點
● 由于采用了微處理器而使靈活性增大、功能增強；
● 具有較強的自診斷能力；
● 零點和量程調(diào)整互不影響；
● 兼有完善的遠程和就地設(shè)定、調(diào)校功能；
● 二線制，符合HART協(xié)議可與HART協(xié)議終端通信而不中斷輸出；
● 采用數(shù)字化補償技術(shù)對溫度及靜壓進行補償；
● 穩(wěn)定性能好，精度高，阻尼可調(diào)，抗單向過載能力強；
● 無機械傳動部件，維修工作量少，堅固抗振；
● 全部通用件，方便維護；
● 接觸介質(zhì)的膜片材料可選，可全天候使用；
技術(shù)性能
使用對象： 液體、氣體或蒸汽
測量范圍： 見選型規(guī)格表
輸出信號： 4～20mA dc.輸出，疊加HART協(xié)議數(shù)字信號（兩線制）
電 源： 外部供電24V dc.，電源范圍12V～45V
危險場所安裝： 隔爆型dIICT5;
本安型 iaIICT5;
技術(shù)指標(biāo)
(在無遷移、316不銹鋼隔離膜片及其他標(biāo)準(zhǔn)測試條件下。)
精 度：±0.1%，±0.075%
應(yīng)用及選型：
普通型壓力變送器是工業(yè)過程控制中最為常用的一種檢測儀表，其廣泛應(yīng)用于各種自控系統(tǒng)，如航空航天、軍工、石化、化工、油井、電力、船舶、建材、管道等眾多行業(yè)。一般用在液體、氣體或蒸汽的壓力或絕對壓力的測量，介質(zhì)溫度不太高，腐蝕性不強，粘稠度不高，不容易結(jié)晶等環(huán)境。
選型注意：
用戶在選型前明確被測介質(zhì)的溫度，腐蝕性，測量范圍，用途，是否防爆，是否需要禁油處理，介質(zhì)是否容易結(jié)晶或粘稠需要膜盒法蘭連接等。
Features
● The flexibility and functionality have been enhanced due to the use of a microprocessor;
● It has a strong self-diagnosis capability;
● Zero point and range adjustments do not affect each other;
● It has complete remote and local setting and calibration functions;
● Two-wire system, compliant with HART protocol, can communicate with HART protocol terminals without interrupting output;
● Digital compensation technology is adopted to compensate for temperature and static pressure;
● Good stability, high accuracy, adjustable damping, strong anti-unidirectional overload capacity;
● No mechanical transmission components, less maintenance workload, sturdy and shock-resistant;
● All universal components, convenient for maintenance;
● The diaphragm material in contact with the medium can be selected, and it can be used all day long;
Technical Performance
Application Object: Liquids, gases or vapors
Measurement Range: See the selection specification table
Output Signal: 4~20mA dc. output, combined with HART protocol digital signal (two-wire system)
Power Supply: External power supply 24V dc., power supply range 12V~45V
Installation in Hazardous Areas: Flameproof type dIICT5; Explosion-proof type iaIICT5; Technical indicators
(Under non-migration, 316 stainless steel diaphragm and other standard test conditions. )
Accuracy: ±0.1%, ±0.075%
Application and selection:
The general-purpose pressure transmitter is one of the most commonly used detection instruments in industrial process control. It is widely used in various automatic control systems, such as aerospace, military, petrochemical, chemical, oil wells, power, ships, building materials, pipelines and many other industries. It is generally used for the measurement of pressure or absolute pressure of liquids, gases or steam, with medium temperatures not too high, corrosion not strong, viscosity not high, and not prone to crystallization.
Selection considerations:
Before selecting, users should clearly know the temperature of the measured medium, corrosion resistance, measurement range, application, whether explosion-proof is required, whether oil-free treatment is needed, whether the medium is prone to crystallization or viscosity, and whether membrane diaphragm flange connection is needed.
