YD-2083C防腐投入式液位變送器的詳細資料: |
YD-2083C系列防腐投入式液位變送器是基于所測液體靜壓與該液體的高度成比例的原理,采用國外的隔離型擴散硅敏感元件的壓阻效應,將靜壓轉換為電信號,再經(jīng)過溫度補償和線性修正,轉化成標準電信號(一般為4~20mA)。 YD-2083C系列防腐投入式液位變送器適用于石油化工、冶金、電力、制藥、供排水、環(huán)保等系統(tǒng)和行業(yè)的各種介質的液位測量。精巧的結構,簡單的調(diào)校和靈活的安裝方式為用戶輕松地使用提供了方便。4~20mA、 0~5v、 0~10mA等標準信號輸出方式由用戶根據(jù)需要任選。 工作原理: 用靜壓測量原理: 當液位變送器投入到被測液體中某一深度時,傳感器迎液面受到的壓力公式為:Ρ = ρ .g.H + Po 式中: P :變送器迎液面所受壓力 ρ:被測液體密度 g :當?shù)刂亓铀俣?/p> Po :液面上大氣壓 H :變送器投入液體的深度 同時,通過導氣不銹鋼將液體的壓力引入到傳感器的正壓腔,再將液面上的大氣壓 Po 與傳感器的負壓腔相連,以抵消傳感器背面的 Po ,使傳感器測得壓力為:ρ .g.H ,顯然 , 通過測取壓力 P ,可以得到液位深度。 功能特點: ◆穩(wěn)定性好,滿度、零位穩(wěn)定性可達 0.2%FS/ 年。在補償溫度 0 ~ 70 ℃范圍內(nèi),溫度飄移低于 0.2%FS ,在整個允許工作溫度范圍內(nèi)低于 0.5%FS 。 ◆具有反向保護、限流保護電路,在安裝時正負極接反不會損壞變送器,異常時送器會自動限流在 35mA以內(nèi)。 ◆固態(tài)結構,無可動部件,高性,使用壽命長。 ◆安裝方便、結構簡單、經(jīng)濟耐用。 主要技術參數(shù): 測量范圍: 0-0.1 米~ 0-35 米 最大過載: 不超過管長1.5倍 測量形式: 平衡罩式 精度等級: 0.5%F · S 電源電壓: 24VDC 負載電阻: ≤ 500 Ω 測量介質: 各種液體 穩(wěn)定性: ± 0.2% F · S/ 年 環(huán)境相對濕度: 0 ~ 95% 補償溫度: 0 ~ 70 ℃ 工作溫度: -40 ~240℃ 溫度可以做到 350 度(需定做) 結構特點: 外殼: 壓鑄合金鋁 主體結構材料: 1Cr18Ni9Ti 電氣接口: M20×1.5 調(diào)試方法: 擰下保護蓋,即可看到調(diào)零和滿程電阻器,外接標準電源及電流表(0 . 2極以上),即可調(diào)整,步驟如下: ◆在變送器沒有液體的情況下,調(diào)節(jié)零點電阻器,使之輸出電流4 m A, ◆變送器加液到滿量程,調(diào)節(jié)滿程電阻器,使之輸出電流20 m A, ◆反復以上步驟兩三次,直到信號正常。 ◆調(diào)節(jié)完畢,擰緊保護蓋。 注意事項 : ◆凡供貨產(chǎn)品均帶有使用說明書及合格證,其中有產(chǎn)品編號、技術參數(shù)、出廠日期等,請認真核對,以免用錯。 ◆接供電電源時應嚴格按照我公司接線說明進行連接。 ◆使用中發(fā)現(xiàn)異常,應關掉電源,停止使用,進行檢查,或直接向我公司技術部門聯(lián)系。 ◆運輸、儲存時應恢復原包裝,存放在陰涼、干燥、通風的庫房內(nèi)。 |
3G三螺桿泵 螺桿泵 三螺桿泵 紅旗高溫泵
3G三螺桿泵是按國家標準GB10887-89設計、制造。三螺桿泵是一種轉子式容積泵,主要是利用螺桿嚙合的原理,依靠旋轉的螺桿在泵套內(nèi)相互嚙合,把被輸送的介質封閉在嚙合腔內(nèi),沿螺桿軸向連續(xù)勻速地推至排出口,為系統(tǒng)提供穩(wěn)定的壓力。三螺桿泵適用于輸送各種無腐蝕性油類及類似油和潤滑性液體。輸送液體的粘度范圍一般為3.0~760mm2/S(1.2~100°E),高粘度介質可通過加溫降粘后輸送。其溫度一般不超過350℃。三螺桿泵特點:(1)壓力和流量范圍廣泛,流量范圍0.2~600m3/h最高工作壓力可達6.3MPa;(2)運送液體的種類和粘度范圍寬廣;(3)因為三螺桿泵內(nèi)的回轉部件慣性力較低,故可使用很高的轉速;(4)吸入性能好,具有自吸能力;(5)流量均勻連續(xù),振動小,噪音低;(6)與其它回轉泵相比,對進入的氣體和污物不太敏感;(7)三螺桿泵結構堅實,安裝保養(yǎng)容易;(8)自吸能力強;(9)由于部件通用組合系列化有多種結構,可用于臥式,法蘭式和立式安裝;(10)根據(jù)所輸送介質需要還可提供加熱或冷卻結構;三螺桿泵的應用范圍:廣泛應用于石油、電力、化纖、船舶、冶金、玻璃、機械、機床、公路等各行各業(yè)。適用于輸送燃料油、液壓油、潤滑油、瀝青、原油及其它類似油的潤滑性液體。
產(chǎn)品說明: XFTC302微型力傳感器是專門用于測量動態(tài)或者靜態(tài)拉壓力的傳感器。XFTC302采用惠斯通電橋金屬應變片,可測量到10KN,并且具有的溫度穩(wěn)定性。XFTC302兩端采用M10螺紋的螺栓,在工業(yè)或者OEM應用中易于安裝使用。力傳感器出線處采用彈簧增加強度。相關型號:XFTC302-A1、XFTC302-A2 所屬品牌: FGP輸出: ±100mV(放大可選)量程: 0-5kN、0-10kN封裝:不銹鋼工作溫度范圍:-55℃~ 175℃精確度:≤±0.5% F.S.供電電源:10Vdc特點:寬范圍的溫度補償,可選IP等級,高剛度,易于定制的信號和設計類型:拉力和壓力電氣連接:電纜典型應用: 動態(tài)應變調(diào)節(jié)氣缸,微型壓接設備,疲勞試驗臺,機器人調(diào)控,熱室環(huán)境 資料下載:本篇文章來源于 北京賽斯維測控技術有限公司——專業(yè)傳感器供應商(http://www.sensorway.cn),轉載請注明出處 詳文請參見: http://www.sensorway.cn/sensors/637.html
Mobil Industrial, United States
Refrigeration Oils
Mobil EAL Arctic Series are high performance Environmental Awareness Lubricants (EAL) that are fully synthetic products designed specifically for the lubrication of refrigeration compressors and systems, using ozone-friendly HFC refrigerants. (HFCs are chlorine-free products replacing chlorine-containing refrigerants in the world market).They are also recommended for carbon dioxide applications, with appropriate miscibility for proper oil return to compressor (typically piston type applications). Mobil EAL Arctic Series oils are formulated from proprietary synthesized Polyol Esters (POEs) and a unique additive system to provide outstanding lubricity, wear protection, chemical and thermal stability, and hydrolytic stability. They are miscible with HFC refrigerants and have well-defined viscosity/temperature/pressure relationships with a widel range of HFCs. The performance of the Mobil EAL Arctic Series has been well documented with HFCs in a broad range of refrigeration and air conditioning systems and are used by many major compressor and system builders around the world.
Mobil EAL Artic Series are recommended for use in household and commercial refrigeration and air conditioning systems where HFC or carbon dioxide refrigerants are used.
Features and BenefitsThe Mobil EAL brand of lubricants are recognised and appreciated around the world for their compatibility with the environment and their excellent performance. The Mobil EAL Arctic Series of products were designed by our research scientists to complement the new generation of ozone-friendly refrigerants mandated by the Montreal Protocol and succeeding world-wide agreements. Development of these products symbolises our continuing commitment to use advanced technology to provide outstanding lubricant products. A key factor in the development of Mobil EAL Arctic Series of lubricants was our close contacts between our scientists and key compressor OEMs and system designers to ensure that our product offerings will provide exceptional performance in a wide range of applications.
This work in combination with our lab testing has helped confirm the exceptional performance of the Mobil EAL Arctic Series lubricants. This cooperative work allowed our scientists to design optimum synthetic POE structures for each viscosity grade in the product series and to develop an additive package to meet the stability and compatibility requirements for refrigeration applications
Mobil EAL Arctic Series oils offer the following features and potential benefits:
Features | Advantages and Potential Benefits |
Excellent high temperature stability | Improved evaporator cleanliness, less unscheduled downtime and reduced maintenance costs |
Well defined miscibility and P-V-T relationships with HFC refrigerants | Assures high system efficiency and proper oil return in refrigeration system designs |
Very good anti-wear properties | Reduced compressor wear resulting in lower maintenance costs |
High Viscosity Index and wax-free | Excellent low temperature fluidity, no waxy deposits and improved evaporator efficiency |
Wide viscosity range | Can meet specific viscosity requirements of a wide range of equipment and applications |
Application considerations: Mobil EAL Arctic Series oils are hygroscopic and care must be taken to avoid moisture absorption during handling. Packages should be tightly closed when not in use, and small packaging preferred. Product should not be transferred to plastic containers that may allow moisture ingress.
Mobil EAL Arctic Series oils are recommended for refrigeration systems where HFC or carbon dioxide refrigerants are used. Specific applications include:
Typical Properties
Mobil EAL Arctic Series | 22 | 22 CC | 32 | 46 | 68 | 100 | 220 |
ISO Viscosity Grade | 22 | 22 | 32 | 46 | 68 | 100 | 220 |
Viscosity, ASTM D 445 | |||||||
cSt @ 40º C | 23.2 | 24 | 34.2 | 49.2 | 68.0 | 105.0 | 226 |
cSt @ 100º C | 4.6 | 4.8 | 5.8 | 7.3 | 8.7 | 11.6 | 18.5 |
Viscosity Index, ASTM D 2270 | 130 | 129 | 115 | 115 | 95 | - | 90 |
Pour Point, ºC, ASTM D 97 | -57 | -54 | -48 | -42 | -36 | -30 | -21 |
Flash Point, ºC, ASTM D 92 | 236 | 236 | 236 | 230 | 230 | - | 290 |
Specific Gravity @15º C, ASTM D 1298 | 1.00 | 0.991 | 0.98 | 0.97 | 0.96 | 0.96 | 0.96 |
Health and Safety
Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.
The Mobil logotype, the Pegasus design and Delvac are trademarks of ExxonMobil Corporation, or one of its subsidiaries.
PT 1300D 手持式乳化機(處理量:0.01-250ml)
瑞士KINEMATCA PT 1300D手持式乳化均質器,操作時即能手持又能安裝在可旋轉的支架上,適合于小量樣品的處理。PT 1300D 重量輕,易于工作人員進行手持操作或者安裝在支架上的移動。如果設備關機之后,自動記憶上次的速度參數(shù),便于重復操作流程。
該乳化均質器的電機可以通過USB或者RS232與電腦進行連接,使用KIN 軟件進行控制。PT 1300D可以配上多種不同形式的工作頭,直徑從3mm 到12mm, 處理量從0.05ml到250ml。為了避免不同物料處理而引起的交叉污染,我們提供直徑7mm-12mm 的一次性合成材料分散頭。我們近期又在產(chǎn)品系列中添加了新的分散頭 PT-DA 20/2 X EC,專門用于均質藥片。
手持式乳化機|手持式均質器|實驗室均質乳化機|實驗室乳化機|實驗室分散機|實驗室均質器|手持式均質機|實驗室均質機
PT 1300 D手持式乳化機的特點:
+ 24V, 100W 低壓電機馬達,配有安全變壓器
+ 數(shù)顯讀數(shù),轉速從2000-30000rpm
+ 分散頭轉子的線速度可達到14m/s, 超細粒徑
+ 分散頭轉速會隨樣品粘度變化而調(diào)整,保證均質過程是在恒定轉速下進行的
+ 軟啟動以防止被均質的物料從樣品容器中濺出
+ 馬達過熱,過載保護
+ 電腦接口(RS 232 and USB)
+ 轉速記憶功能
+ 薄膜鍵盤易于手動控制和清潔
+ 專利的快接分散頭安裝設計, 可以單手完成安裝或者拆卸
+ 分散頭的定子-轉子易于拆卸清洗(Easy Clean 技術),操作者可以簡單快速完成定子-轉子的拆卸,提供不同的分散頭以滿足具體的需要。
PT 1300 D手持式乳化機的技術參數(shù):
型號/系列 | 處理量 | 最大轉速 | 功率 | 分散頭直徑 | 標準軸長 |
PT 1300 D | 0.01-250ml | 30000rpm | 100w | 3-12mm | 50-123mm |
依泰XT-7031,XT-7032抗干擾溫控儀列智能雙排數(shù)字顯示溫度儀表是依泰儀表針對中國國情而進口組裝生產(chǎn),不僅克服了傳統(tǒng)動圈模擬數(shù)字儀表的不足,而且有十分顯著的,與眾不同的的特點:性能穩(wěn)定、高可靠、低價格、多重抗干擾措施、穩(wěn)定性好。采用進口專用儀表芯片,掉電參數(shù),可長久保持,多種信號輸入輸出,易與各種傳感器、變送器配套