亚洲视频福利,日本精品一区二区三区在线,日韩欧美在线视频一区二区,国产高清自产拍av在线,99久久99久久精品国产片果冻,国产视频手机在线,成人禁在线观看午夜亚洲

DH388A0型選頻放大器是實(shí)驗(yàn)室用測(cè)量?jī)x器，主要用于測(cè)量微弱低 頻交流信號(hào)。配合微波測(cè)量線可用于測(cè)量駐波系數(shù)，配合微波檢波器可用于測(cè)量衰減量等。

DH388A0型選頻放大器靈敏度高，穩(wěn)定性好，適用領(lǐng)域廣泛。 1.頻率范圍： 400Hz — 10KHz 2.輸入電壓信號(hào)動(dòng)態(tài)范圍：10μv — 2000mv 3.靈敏 度：  10μv  （滿量程）4.輸入阻抗：20KΩ(1KHz)

• Voltage Input Modes A only, -B only or Differential (A-B) Full-scale Sensitivity 0.5 Hz ?/font> F ?/font> 250 kHz 10 nV to 1 V in a 1-2-5 sequence 250 kHz < F ?/font> 2.0 MHz 100 nV to 1 V in a 1-2-5 sequence Max. Dynamic Reserve > 100 dB Impedance 100 MW // 25 pF Maximum Safe Input 20 V pk-pk Voltage Noise 5 nV/?/font>Hz @ 1 kHz C.M.R.R. > 100 dB @ 1 kHz Frequency Response 0.5 Hz to 2.0 MHz Gain Accuracy ?.3% typ, ?.6% max. (full bandwidth) Distortion -90 dB THD (60 dB AC gain, 1 kHz) Line Filter attenuates 50, 60, 100, 120 Hz Grounding BNC shields can be grounded or floated via 1 kW to ground Current Input Mode Low Noise, Normal or Wide Bandwidth Full-scale Sensitivity Low Noise 10 fA to 10 nA in a 1-2-5 sequence Normal 10 fA to 1 礎(chǔ) in a 1-2-5 sequence Wide Bandwidth F ?/font> 250 kHz 1 pA to 100 礎(chǔ) in a 1-2-5 sequence F > 250 kHz 10 pA to 100 礎(chǔ) in a 1-2-5 sequence Max. Dynamic Reserve > 100 dB Frequency Response (-3 dB): Low Noise ?/font> 500 Hz Normal ?/font> 50 kHz Wide Bandwidth ?/font> 1 MHz Impedance Low Noise < 2.5 kW @ 100 Hz Normal < 250 W @ 1 kHz Wide Bandwidth < 25 W @ 10 kHz Noise Low Noise 13 fA/?/font>Hz @ 500 Hz Normal 130 fA/?/font>Hz @ 1 kHz Wide Bandwidth 1.3 pA/?/font>Hz @ 1 kHz Gain Accuracy ? 0.6% typ, midband Line Filter attenuates 50, 60, 100, 120 Hz Grounding BNC shield can be grounded or floated via 1 kW to ground Reference Channel TTL Input Frequency Range 0.5 Hz to 2.0 MHz Analog Input Impedance 1 MW // 30 pF Sinusoidal Input Level 1.0 V rms＊ Frequency Range 0.5 Hz to 2.0 MHz Squarewave Input Level 250 mV rms Frequency Range 2 Hz to 2 MHz ＊Note: Lower levels can be used with the analog input at the expense of increased phase errors Phase Set Resolution 0.001?/font> increments Phase Noise at 100 ms TC, 12 dB/octave slope: Internal Reference < 0.0001?/font> rms External Reference < 0.01?/font> rms @ 1 kHz Orthogonality 90?/font> ?.0001?/font> Acquisition Time Internal Reference instantaneous acquisition External Reference 2 cycles + 50 ms Reference Frequency Meter Resolution 1 ppm or 1 mHz, whichever is the greater DemodulatorOutput Processing Output Zero Stability Digital Outputs No zero drift on all settings Displays No zero drift on all settings Not Available Analog Outputs < 5 ppm/?/font>C Harmonic Rejection -90 dB Output Filters X, YR outputs only Time Constant 1 祍 to 1 ms in a 1-2-5 sequence,4 ms Slope (roll-off) 612 dB/octave All outputs Time Constant 5 ms to 100 ks in a 1-2-5 sequence Slope 6, 12, 1824 dB/octave Synchronous Filter Available for F < 20 Hz Offset AutoManual on X and/or Y: ?00% full-scale Absolute Phase Measurement Accuracy ?/font> 0.01?/font> Oscillator Frequency Range 0.5 Hz to 2.0 MHz Setting Resolution 1 mHz Absolute Accuracy ? 50 ppm Distortion (THD) -80 dB @ 1 kHz100 mV rms Amplitude (rms) Range 1 mV to 1 V Setting Resolution 1 mV Accuracy ?.2% Stability 50 ppm/?/font>C Output Impedance 50 W Sweep Amplitude Sweep Output Range 0.000 to 1.000 V rms Law Linear Step Rate 20 Hz maximum (50 ms/step) Frequency Sweep Output Range 0.5 Hz to 2.0 MHz Law Linear or Logarithmic Step Rate 20 Hz maximum (50 ms/step) Auxiliary Inputs ADC 1, 2, 34 Maximum Input ?0 V Resolution 1 mV Accuracy ?0 mV Input Impedance 1 MW // 30 pF Sample Rate ADC 1 only 40 kHz max. ADC 12 17.8 kHz max. Trigger Mode Internal, External or burst Trigger Input TTL compatible Outputs Main Analog (CH1CH2) Outputs: Function X, Y, R, q, Noise, Ratio, Log RatioUser Equations 1 & 2. Amplitude ?.5 V full-scale; linear to ?00% full-scale Impedance 1 kW Update Rate X, Y or R @ TC ?/font>4 ms 7.5 MHz All outputs @ TC ?/font>5 ms 1 kHz Signal Monitor Amplitude ? V FS Impedance 1 kW Auxiliary D/A Output 12: Maximum Output ?0 V Resolution 1 mV Accuracy ?0 mV Output Impedance 1 kW 8-bit Digital Port 0 to 8 lines can be configured as inputs, with the remainder being outputs. Each output line can be set high or loweach input line read to allow interaction with external equipment. Extra line acts as trigger input Reference Output Waveform 0 to 3 V rectangular wave, active in External Reference Mode only Impedance TTL-compatible Power - Low Voltage ?5 V at 100 mA rear panel 5-pin 180?DIN connector for powering SIGNAL RECOVERY preamplifiers Data Storage Buffer Size 32k ?16-bit data points, may be organized as 1?2k, 2?6k, 3?0.6k, 4?k, etc. Max Storage Rate From LIA up to 1000 16-bit values per second From ADC1 up to 40,000 16-bit values per second User Settings Up to 8 complete instrument settings can be saved or recalled at will from non-volatile memory Not available Interfaces RS232GPIB (IEEE-488). A second RS232 port is provided to allow "daisy-chain" connectioncontrol of up to 16 units from a single RS232 computer port General Power Requirements Voltage 110/120/220/240 VAC Frequency 50/60 Hz Power 200 VA max Dimensions Width 17?quot; (435 mm) Depth 19" (485 mm) Height With feet 6" (150 mm) Without feet 5?quot; (130mm) Weight 25.4 lb (11.5 kg)  

• 主要特點(diǎn)
• The model 7280 DSP Lock-in Amplifier is an exceptionally versatile instrument with outstanding performance. With direct digital demodulation over an operating frequency extending up to 2.0 MHz, output filter time constants down to 1 祍a main ADC sampling rate of 7.5 MHz it is ideal for recovering fast changing signals. But unlike some other high frequency lock-ins, it also works in the traditional audio frequency band. In addition to its excellent technical specifications, it is also very easy to use. The front panel is dominated by a large electroluminescent display panel, used both to show the instrument''s outputsfor adjusting its controls via a series of menus. Controls are set by a combination of the use of the keys surrounding the displaythe keypad, while four cursor-movement keys simplify use of the graphic display menus. Users of the SIGNAL RECOVERY (formerly PerkinElmer/EG&G) 72607265 will find switching to the 7280 very easy, since we''ve designed it with a similar menu structure. The only significant changes are in some of the control menus, where the better resolution of the display allows both the controlsthe instrument outputs to be shown simultaneously, for even faster feedback on the effects of control adjustments. Naturally, the instrument includes the extended operating modes like dual reference, dual harmonicvirtual reference made popular by the 72607265, as well as the spectral display mode used to aid reference frequency selection. It also includes GPIBRS232 interfaces for remote computer controla range of auxiliary analogdigital inputsoutputs. Software support is available in the form of a LabVIEW driver supporting all instrument functions,the Acquire™ data acquisition software. The drivera demonstration version of the software, DemoAcquire, are available for download from this site. In summary, if you need a lock-in capable of working beyond the traditional audio frequency band but still want the drift-free performance that only digital demodulation brings, then look no further - you have found it in the SIGNAL RECOVERY Model 7280.

此定位器可接受來自上位儀表的DC4—20mA的調(diào)節(jié)信號(hào)和下位電動(dòng)執(zhí)行機(jī)構(gòu)電位器的“三線”信號(hào)，輸出“開”和“關(guān)”信號(hào)，實(shí)現(xiàn)對(duì)閥門開度的控制與調(diào)節(jié)。 廣泛使用在與單相交流電機(jī)的執(zhí)行器配用（如閥角執(zhí)行器與直行程電動(dòng)執(zhí)行機(jī)構(gòu)）。 1、控制精度：1%-3.0%（可調(diào)）； 2、可接電動(dòng)執(zhí)行器反饋信號(hào):電位器0-5kΩ； 3、接收工業(yè)儀表或計(jì)算機(jī)等輸出的控制信號(hào)：4-20 mA DC或1-5V DC (其他訂貨時(shí),須注明)； 4、輸出執(zhí)行器位置信號(hào)：4-20mA DC對(duì)應(yīng)執(zhí)行器全閉至全開； 5、可控硅觸點(diǎn)容量：25A/600V AC ； 6、智能定位裝置采用2個(gè)按鍵操作，8個(gè)LED直接顯示定位器的模態(tài)，操作方便； 7、電動(dòng)執(zhí)行器全開、全閉位置自動(dòng)定位標(biāo)定； 8、按輸入信號(hào)和執(zhí)行器轉(zhuǎn)角位置進(jìn)行智能步距調(diào)整、自動(dòng)定位； 9、增加了手動(dòng)及面板燈示閥位開度功能； 10、與電動(dòng)執(zhí)行器（帶電位器反饋）配套，可直接安裝在電動(dòng)執(zhí)行器接線盒內(nèi)； 11、可內(nèi)置多數(shù)電動(dòng)執(zhí)行器內(nèi)

品名:儀表信號(hào)放大器用途:將傳感器的微弱信號(hào)轉(zhuǎn)換成標(biāo)準(zhǔn)信號(hào),用傳感器生產(chǎn)工業(yè)標(biāo)準(zhǔn)變送器型號(hào):Ms-DCIA05/Ms-DCIA10/Ms-DCIA20電源:AC10~24v, DC12-30V輸入:0-n（n表示0-10V之間的任意數(shù)直流電壓  ）輸出0-10V，0-5V或4-20mA，輸出:電壓0~10v,0~10v,4~20mA(訂貨選擇)特點(diǎn): 將儀表信號(hào)作線性放大,并提供5V或者10V最大100mA傳感器基準(zhǔn)電源用法1:輸入非標(biāo)準(zhǔn)信號(hào)，0-nV；輸出標(biāo)準(zhǔn)信號(hào)0-5v,0-10v或4-20mA(n表示10V以下的大于零的任何數(shù)值的電壓或電流信號(hào))用法2:將1號(hào)傳感器數(shù)值，減去2號(hào)傳感器數(shù)值，將兩者之差放大成0-10v或4-20mA標(biāo)準(zhǔn)信號(hào),用法3:輸入傳感器數(shù)值，減去任意一個(gè)數(shù)值，將兩者之差放大成0-10v或4-20mA標(biāo)準(zhǔn)信號(hào)用法4:輸入任意一個(gè)數(shù)值，減去傳感器一個(gè)數(shù)值，將兩者之差放大成0-10v或4-20mA標(biāo)準(zhǔn)信號(hào)用法5:將0-n（任意數(shù)值）或n-0由小到大或由大到小的不規(guī)則信號(hào)運(yùn)算在0-10V或4-20mA標(biāo)準(zhǔn)信號(hào)用法6: 將0-5V正比例信號(hào)轉(zhuǎn)換成5-0V反比例信號(hào),或0-10V正比例信號(hào)轉(zhuǎn)換成10-0V反比例信號(hào)應(yīng)用示例:1,濕度傳感器的輸出信號(hào)0.8~1.8v,值為15~95%的非標(biāo)準(zhǔn)信號(hào).要轉(zhuǎn)換一個(gè)標(biāo)準(zhǔn)濕度變送器,只需將傳感器信號(hào)接入信號(hào)放大器J2,調(diào)節(jié)W1使J3電壓到0.800(精確到小數(shù)點(diǎn)后三位),滿量程電壓調(diào)節(jié)W3達(dá)到10.000V,一個(gè)精密的濕度變送器就生產(chǎn)出來了.2,風(fēng)速傳感器的輸出信號(hào)80mV~600mV,值為0.01~6m的非標(biāo)準(zhǔn)信號(hào).要轉(zhuǎn)換一個(gè)標(biāo)準(zhǔn)空氣流量(流速)變送器,只需將傳感器信號(hào)接入信號(hào)放大器J2,調(diào)節(jié)W1使J3電壓到80mV(精確到小數(shù)點(diǎn)后三位),滿量程電壓調(diào)節(jié)W3達(dá)到10.000V,一個(gè)精密的濕度變送器就生產(chǎn)出來了.3,壓力傳感器的輸出信號(hào)1.2V~3.8V,值為0~10KPa的非標(biāo)準(zhǔn)信號(hào).要轉(zhuǎn)換一個(gè)標(biāo)準(zhǔn)壓力變送器,只需將一個(gè)傳感器信號(hào)接入信號(hào)放大器J2,另一個(gè)傳感器信號(hào)接入信號(hào)放大器J3,滿量程電壓調(diào)節(jié)W3達(dá)到10.000V,一個(gè)精密的差壓變送器就生產(chǎn)出來了.4,PLC控制器輸出0-5v控制信號(hào),要推動(dòng)一個(gè)只能接入4~20mA的變頻器或閥門推動(dòng)器,只需將信號(hào)接入J1,調(diào)節(jié)W3使輸出為20mA,將控制信號(hào)接入閥門就可以運(yùn)行了.5,可擴(kuò)展性:本身不帶顯示,需要顯示實(shí)時(shí)數(shù)據(jù)的用戶可通過購(gòu)買擴(kuò)展連接器實(shí)現(xiàn),也可以通過擴(kuò)展器將實(shí)時(shí)數(shù)據(jù)傳送到電腦,通過電腦在國(guó)際互聯(lián)網(wǎng)上發(fā)布,或遠(yuǎn)程管理人員監(jiān)控.

YXG-150-KG 感應(yīng)接點(diǎn)壓力表（帶開關(guān)放大器）

儀表的接點(diǎn)應(yīng)用了無接觸感應(yīng)開關(guān)，故無觸點(diǎn)蝕損現(xiàn)象、靈敏度高、響應(yīng)快速、控制精度高、無滯后跳躍現(xiàn)象，安全可靠。儀表內(nèi)安裝了兩個(gè)開關(guān)放大器，輸出0.3V-24V高低電壓信號(hào)供過程控制用，也可驅(qū)動(dòng)小功率負(fù)載。技術(shù)參數(shù)：執(zhí)行標(biāo)準(zhǔn)：Q/320211 DGH08-2002精確度等級(jí)：1.6級(jí)測(cè)量范圍：0-0.16,0-0.25,0-0.4,0-0.6,0-1.0,0-1.6,0-2.5,0-4.0,0-6.0,0-10,0-16,0-25,0-60,-0.1-0.15,-0.1-0.3,-0.1-0.5,-0.1-0.9,-0.1-1.5,-0.1-2.4MPa工作溫度：-10℃-55℃防護(hù)等級(jí)：IP54電源電壓：DC24V，電流：最大100mA輸出：高低電平：0.3V/24V,電流：≤30mA。

接點(diǎn)型式與控制方式：  

型號(hào)	示意圖	接點(diǎn)型式	控制片隨指示針變動(dòng)時(shí)的位置	等效接觸式接點(diǎn)
YXG-150-KG21		上下限	1、控制片皆處于感應(yīng)開關(guān)內(nèi)。2、指示針上行（或下行）時(shí)，上限接點(diǎn)（下限接點(diǎn)）的控制片退出感應(yīng)開關(guān)。	1、二接點(diǎn)皆斷開，輸出低電平。2、上限接點(diǎn)（下限接點(diǎn)）接通，輸出高電平
YXG-150-KG11		雙上限	1、控制片皆處于感應(yīng)開關(guān)內(nèi)。2、指示針上行時(shí)，接點(diǎn)1、2的控制片順序退出感應(yīng)開關(guān)。	1、二接點(diǎn)皆斷開，輸出低電平。2、接點(diǎn)1、2順序接通，輸出高電平。
YXG-150-KG22		雙下限	1、控制片皆處于感應(yīng)開關(guān)內(nèi)。2、指示針下行時(shí)，接點(diǎn)2、1的控制片順序退出感應(yīng)開關(guān)	1、二接點(diǎn)皆斷開，輸出低電平。2、接點(diǎn)2、1順序接通，輸出高電平。
YXG-150-KG1		單上限	1、控制片處于感應(yīng)開關(guān)內(nèi)。2、指示針上行時(shí)，接點(diǎn)控制片退出感應(yīng)開關(guān)。	1、接點(diǎn)斷開，輸出低電平。2、接點(diǎn)接通，輸出高電平。
YXG-150-KG2		單下限	1、控制片處于感應(yīng)開關(guān)內(nèi)。2、指示針下行時(shí)，接點(diǎn)控制片退出感應(yīng)開關(guān)。	1、接點(diǎn)斷開，輸出低電平。2、接點(diǎn)接通，輸出高電平。
注：示圖中控制片在感應(yīng)開關(guān)內(nèi)，示接點(diǎn)呈斷開狀態(tài)。          控制片在感應(yīng)開關(guān)外，示接點(diǎn)呈接通狀態(tài)。

儀表工作特性：（上下限接點(diǎn)型式例）

       儀表壓力上升到上限（或下降至下限）設(shè)定值時(shí)輸出約DC24V高電平信號(hào)，壓力值在上、下限設(shè)定范圍內(nèi)時(shí)，兩個(gè)接點(diǎn)輸出為0V低電平信號(hào)。

　

使用與訂貨須知：

儀表工作環(huán)境無腐蝕性氣體。訂貨請(qǐng)說明名稱、型號(hào)、測(cè)量范圍。有特殊要求請(qǐng)另行說明。

主要產(chǎn)品：一般壓力表；軸向壓力表：軸向帶邊壓力表：真空表：真空壓力表：耐震壓力表；全不銹鋼壓力表；耐震全不銹鋼壓力表；定位型壓力表；差動(dòng)遠(yuǎn)傳壓力表；耐震型差動(dòng)遠(yuǎn)傳壓力表；電感壓力變送器；全不銹鋼電感壓力變送器：隔膜壓力表；壓力繼電器；耐震電接點(diǎn)壓力表；全不銹鋼耐震電接點(diǎn)壓力表：光電耐震電接點(diǎn)壓力表；耐震光電信號(hào)電接點(diǎn)壓力表；膜片壓力表；耐震膜片壓力表；耐腐膜片壓力表；耐腐耐震膜片壓力表；不銹鋼膜盒壓力表；膜盒壓力表；雙金屬溫度計(jì)；電接點(diǎn)雙金屬溫度計(jì)：卡箍型雙金屬溫度計(jì)：抗振差壓表；保護(hù)繼電器；抗振電接點(diǎn)壓力表（大功率）；防爆感應(yīng)接點(diǎn)壓力表；抗振感應(yīng)接點(diǎn)壓力表；控制器；感應(yīng)接點(diǎn)壓力表（帶開關(guān)放大器）； 抗振電接點(diǎn)壓力表（帶保護(hù)繼電器）；抗振磁敏電接點(diǎn)壓力表等系列儀表。

如果您對(duì)我們的產(chǎn)品感興趣, 請(qǐng)發(fā)個(gè)郵件或撥個(gè)電話, 我們立即將有關(guān)資料、價(jià)格傳真過去, 供您參考選用。真誠(chéng)的希望能有機(jī)會(huì)為您服務(wù), 在交往中加深了解, 在了解中密切合作, 以求和您共同發(fā)展, 取得更大的成就。歡迎新老朋友索取資料和價(jià)格，有函必復(fù)，有電必回，加強(qiáng)溝通，力求雙贏。

信號(hào)轉(zhuǎn)換成電信號(hào)的轉(zhuǎn)換器，以實(shí)現(xiàn)電液系統(tǒng)自動(dòng)程序控制和安全保護(hù)。適用一般環(huán)境油、氣、水等工作介質(zhì)，儀表壓力切換可調(diào)，反應(yīng)靈敏，并有燈光顯示，其技術(shù)指標(biāo)符合液壓壓力繼電器產(chǎn)品質(zhì)量分等JB/JQ2020-88標(biāo)準(zhǔn)。PD-H-L壓力繼電器已獲實(shí)用新型專利，專利號(hào)：91-65222，該產(chǎn)品廣泛應(yīng)用于機(jī)械、冶金、礦山、石油、化工等自動(dòng)控制和安全保護(hù)。