意大利 ADEV 7873 氧化鋯煙氣分析儀

意大利 ADEV 7873 氧化鋯煙氣分析儀

 

自熱式探頭，設(shè)計用于測量煙氣中的氧氣（最高 700°C）。設(shè)計用于測量煙氣中的氧氣，以提高以天然氣、輕油和重油、液化石油氣、生物質(zhì)和煤炭為原料的大型鍋爐和發(fā)電廠的燃燒效率和燃料節(jié)省。

?可用作探頭輸出 ??4-20 mA 的發(fā)射器，或與控制單元/顯示器結(jié)合使用。

 

可測量氣體

氧氣 [O2]

 

主要特點

極端粗糙度

  • 接觸工藝氣體的堅固材料
  • 可連續(xù)或循環(huán)用于溫度高達 700°C 的煙氣
  • 請勿損壞或變形
  • 安裝和保護管使探頭適用于高粉塵煙氣，避免臟物質(zhì)的磨損和粘附。
  • 不同類型的過濾網(wǎng)和偏轉(zhuǎn)板可阻止氣流，以限制灰塵對傳感器的影響：

無關(guān)鍵部件

  • 避免了潛在的關(guān)鍵解決方案，例如內(nèi)部焊接、關(guān)鍵耦合以及參考大氣與測量大氣的分離：

 

易于使用和維修

  • 直接插入煙囪或管道
  • 無需從過程中移除探頭即可檢查校準(zhǔn)
  • 所有零部件均易于接近且可現(xiàn)場維修。

無需將探頭從安裝座上拆下即可更換傳感器組件。

 

歐洲合規(guī)性

  • 低電壓指令 2014/35/EU
  • EMC 指令 2014/30/EU

規(guī)格

Probe
Accuracy 0.1% O2 below 5% or 2% of reading above 5%
Repeatability ± 1% of reading (short term)
Output Resolution 0.01% O2
Response Time Sensor: 0.1 sec. ; Overall system < 5 sec.
Flue Gas Temperature up to 700°C (on request up to 800°C)
Insertion Length 300 / 450 / 1000 / 1500 / 2000 mm
Process Connection Flange type
Ambient Temp. Influence Probe: max ± 0.005% of reading per °C. External head: max. 0.06% of reading per °C
Atm. Pressure Influence 1% of reading per 1% change in ambient pressure.
Probe Head Protection IP65
Head Temperature -5°C…+55°C
Weight Probe 300/450 mm: 9 Kg. ; Probe 1000 mm: 10 Kg.; Probe 1500 mm: 11 Kg. ; Probe 2000 mm: 13 Kg.
Wiring Connections N°2 cable glands for cables max. 10 mm and inner terminal strip
Pneumatic Connections Calibration inlet: 1/8” NPT-F
Measuring Principle Zirconium Oxide (Zirconia). Micro-pod sensor technology with no need of reference air
Humidity 0….90% non-condensing
Analog Output 1 x 4-20 mA linear output proportional to range; max. load 500 Ω (or 350 Ω with galvanically insulated module) or logarithmic 50 mV/decade *
Ranges 0-5 / 0-10 / 0-25% O2 (to select at order)
Diagnostic NV Logical Output (non-valid) Logical Non Valid output from relay free contact. Normally supplied in fail safe condition (triggered relay and closed contact if not in alarm). Can be modified in filed
Power Supply 117 VAC ± 10%, 50/60 Hz, 350 VA
*Output from probe when connected to a remote ADEV control unit
Control Unit
ADV222 specifications (common to all versions)
Analog Inputs 2 x isolated
Analog Outputs 2 x isolated
Output Resolution better than 1×10.000 of FS
Relays N°2 relays SPDT, 230 VAC, nominal 2A (max 4A) **
Power Supply 8…28 VDC ; 9…24 VAC
Ranges 0-25% O2 ***
Operative Temperature -20°C…+70°C
Humidity 0….90% non-condensing
Led Power supply (blue) – Cumulative inputs overload (red) – TX/RX (yellow/amber)
Serial Interface RS485 2-wire (Protocol ModBus-RTU)
Line Impedance 120 ohm
Termination Type External
Max Speed 57600bps
Max No. of Nodes 32
Protection IP20
Weight 900 gr.
Connections Removable screw terminals pace 5,08 mm
Conductor Section Max. 2,5 mmq
Mounting DIN rail
***Threshold to be selected at order (factory set) or settable in field by PC with ADEV Easy Configurator or by display if ADbox or ADcaseM are selected
****Default range factory set. Modifiable on request at order on customer specification or by PC with ADEV Easy Configurator
Supplementary ADbox Specification
Protection IP55
Weight 8 Kg.
Dimensions 400 x 300 x 150 mm
Display LCD 2.42” OLED. Resolution0.01%
Cable Entrance (bottom) N°4 cable glands PG 13 / 9 / 7
Supplementary ADcaseM Specification
Protection IP55
Weight 10 Kg.
Dimensions 400 x 300 x 150 mm
500 x 400 x 250 mm (with transformer)
Display LCD 2.42” OLED. Resolution0.01%
Cable Entrance (bottom) N°4 cable glands PG 13 / 9 / 7
Pneumatic Connections Calibration air inlets: 1/8” NPT-F
Configurations ADcaseM-1: Pressure reducer and manual valve
ADcaseM-2: Pressure reducer and electro valve

 

應(yīng)用領(lǐng)域

使用任何類型燃料的工業(yè)鍋爐：天然氣、液化石油氣、輕油、重油、柴油、煤炭、生物質(zhì)

公用事業(yè)鍋爐

回收鍋爐

低溫焚燒爐

發(fā)電廠

水泥窯

工業(yè)爐

煙氣處于溫度限制范圍內(nèi)（700°C 以內(nèi)）的其他燃燒過程

 

測量原理

 

分析所依據(jù)的測量原理與氧化鋯的使用有關(guān)，氧化鋯在高溫下可以表現(xiàn)得像固態(tài)電解質(zhì)，在與不同 O 2濃度（分壓）接觸的兩個電極上產(chǎn)生電動勢，與以開爾文度 (°K) 為單位的溫度以及兩個壓力 PO?2?‘ 和 PO?2?”之間的比率的對數(shù)（根據(jù)能斯特眾所周知的比率）成正比：

 

E=RT/nF(Lg P0?2?‘/P0?2?“)

 

其中： R = 完美氣體常數(shù)（8.31 焦耳/度體積）

?????????????????????? F = 法拉第常數(shù)

?????????????????????? T = 絕對溫度（°Kelvin）

?????????????????????? n = 4

 

 

內(nèi)部傳感元件基于專有的 ADEV 技術(shù)（微莢），并具有固態(tài)參考，完全消除了參考?xì)饬鞯男枰箖x器在現(xiàn)場使用非常簡單實用。

  • 無參考空氣
  • 傳感器位于尖端
  • 無氣體循環(huán)

Related posts