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儀表信號放大器

品名:儀表信號放大器用途:將傳感器的微弱信號轉(zhuǎn)換成標(biāo)準(zhǔn)信號,用傳感器生產(chǎn)工業(yè)標(biāo)準(zhǔn)變送器型號: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，0-nV；輸出標(biāo)準(zhǔn)信號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)用法2:將1號傳感器數(shù)值，減去2號傳感器數(shù)值，將兩者之差放大成0-10v或4-20mA標(biāo)準(zhǔn)信號,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)則信號運(yùn)算在0-10V或4-20mA標(biāo)準(zhǔn)信號用法6: 將0-5V正比例信號轉(zhuǎn)換成5-0V反比例信號,或0-10V正比例信號轉(zhuǎn)換成10-0V反比例信號應(yīng)用示例:1,濕度傳感器的輸出信號0.8~1.8v,值為15~95%的非標(biāo)準(zhǔn)信號.要轉(zhuǎn)換一個(gè)標(biāo)準(zhǔn)濕度變送器,只需將傳感器信號接入信號放大器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80mV~600mV,值為0.01~6m的非標(biāo)準(zhǔn)信號.要轉(zhuǎn)換一個(gè)標(biāo)準(zhǔn)空氣流量(流速)變送器,只需將傳感器信號接入信號放大器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1.2V~3.8V,值為0~10KPa的非標(biāo)準(zhǔn)信號.要轉(zhuǎn)換一個(gè)標(biāo)準(zhǔn)壓力變送器,只需將一個(gè)傳感器信號接入信號放大器J2,另一個(gè)傳感器信號接入信號放大器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,要推動(dòng)一個(gè)只能接入4~20mA的變頻器或閥門推動(dòng)器,只需將信號接入J1,調(diào)節(jié)W3使輸出為20mA,將控制信號接入閥門就可以運(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,通過電腦在國際互聯(lián)網(wǎng)上發(fā)布,或遠(yuǎn)程管理人員監(jiān)控.

DH388A0型選頻放大器

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

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.輸入電壓信號動(dòng)態(tài)范圍：10μv — 2000mv 3.靈敏度： 10μv （滿量程）4.輸入阻抗：20KΩ(1KHz)

7280/7265/7225　數(shù)字鎖相放大器

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.

該公司產(chǎn)品分類：水質(zhì)分析儀/多參數(shù)水質(zhì)分析儀其它基礎(chǔ)儀表其它測量/計(jì)量儀器生物顯微鏡激光拉曼光譜(RAMAN) 表面阻抗蠕動(dòng)泵電化學(xué)工作站、恒電位儀液體處理工作站(移液工作站) 在線測厚儀生物芯片、芯片掃描儀、芯片點(diǎn)樣儀、芯片檢測儀微波、電、磁學(xué)量的測量儀表微流控芯片等離子體表面處理儀橢偏儀鎖相放大器其它動(dòng)物實(shí)驗(yàn)儀器白光干涉測厚儀掃描探針顯微鏡SPM（原子力顯微鏡AFM、掃描隧道顯微鏡STM）紫外、紫外分光光度計(jì)、紫外可見分光光度計(jì)、UV

ZPE型伺服放大器

ZPE型伺服放大器是電動(dòng)單元組合儀表的重要組成部分，可與以單相或三相電動(dòng)機(jī)驅(qū)動(dòng)的各種角行程、直行程和多轉(zhuǎn)式電動(dòng)執(zhí)行機(jī)構(gòu)及電動(dòng)調(diào)節(jié)閥配合采用過零觸發(fā)固態(tài)繼電器，無觸點(diǎn)電子開關(guān)使運(yùn)行安全，并設(shè)有執(zhí)行機(jī)構(gòu)正行、反行和電源保險(xiǎn)絲熔斷的信號指示及斷信號保護(hù)功能和對外報(bào)警觸點(diǎn)。伺服放大器分為普通型和保護(hù)型。 (同F(xiàn)C-A／B型)ZPE型伺服放大器技術(shù)參數(shù)和性能：輸入信號： Ⅱ型0～10mA Ⅲ型4～20mA·DC 輸入電阻： Ⅱ型200Q Ⅲ型250Ω 輸入通道：4個(gè) 最大輸出電流：5A 20A 死區(qū)可調(diào)節(jié)范圍：1—3％斷信號識別：<2mA(僅III型) 電源電壓：220V 50HZ 環(huán)境溫度：一0～+50~C 環(huán)境濕度：10—70％安裝形式：墻掛式，架裝式外型尺寸：如示意圖

ZCX-系列電動(dòng)操作顯示器 DFD系列操作器伺服控制PID調(diào)節(jié)器 SFD系列電動(dòng)伺服操作器 SFD-1002J型電動(dòng)操作器 SWF型位置發(fā)送器 ZPE型伺服放大器 QJ型球型鉸鏈機(jī) SM單相伺服電機(jī) 電動(dòng)執(zhí)行機(jī)構(gòu) ZKJ型角行程電動(dòng)執(zhí)行機(jī)構(gòu) ZKZ型直行程電動(dòng)執(zhí)行機(jī)構(gòu) ZAJW型電動(dòng)調(diào)節(jié)蝶閥

ZAZP型/ZAZN型電動(dòng)單雙座調(diào)節(jié)閥 ZAZM型電動(dòng)套筒調(diào)節(jié)閥 ZAZQ、ZAZX型電動(dòng)三通調(diào)節(jié)閥

該公司產(chǎn)品分類：其他智能空氣凈化裝置氣體檢測報(bào)警器儀表保護(hù)保溫箱系列無紙記錄儀分析儀器傳感器電極系列電化學(xué)水分析測量儀表工業(yè)自動(dòng)化儀表盤智能數(shù)據(jù)采集裝置汽輪機(jī)相關(guān)儀表及傳感器校驗(yàn)儀系列電動(dòng)操作顯示器節(jié)流裝置及平衡容器變送器系列閃光報(bào)警器及音響器智能通用數(shù)顯儀系列氧化鋯氧量分析儀系列流量儀、流量計(jì)、變送器智能溫度巡測與記錄儀指示儀，監(jiān)控儀，物位儀

振動(dòng)臺伺服功率放大器

振動(dòng)臺伺服功率放大器產(chǎn)品說明

振動(dòng)臺伺服功率放大器特點(diǎn):系統(tǒng)伺服保護(hù)器 Servo System Protection 具過位移、過電流、音圈異常溫度指示、功率放大器異常溫度指示、抽風(fēng)異常指示、放大器之N.TR/P.TR異常指示及緊急停止指示共１０個(gè)異常數(shù)位指示燈。

振動(dòng)臺伺服功率放大器 Power Amplifier 功率效益：９６％（一年可省下數(shù)十萬電費(fèi)及減少產(chǎn)生大量廢熱氣節(jié)省冷氣支出，改善工作環(huán)境。失真率：≦0.2%THD。精確度設(shè)定0.1%。具有過電流、過電壓、雜訊偵測保護(hù)及多項(xiàng)輸出極限值設(shè)定。

振動(dòng)臺伺服功率放大器 | 振動(dòng)臺功率放大器

DFDA5000帶伺服放大器的后備操作器

帶伺服放大的后備智能操作器

適用范圍

DFDA5000是伺服放大器、手動(dòng)操作器和后備功能一體化智能產(chǎn)品，接收0-10mA/4-20mA/0-5V/1-5V閥位給定信號，輸出正轉(zhuǎn)、反轉(zhuǎn)控制信號。適合于作為DCS系統(tǒng)回路調(diào)節(jié)控制輸出和智能調(diào)節(jié)器控制輸出的后備操作器使用。

功能特點(diǎn)

★ DFDA5000處在自動(dòng)工作態(tài)時(shí)，其功能類似伺服放大器。按閥位給定信號和閥位反饋信號的誤差進(jìn)行調(diào)節(jié)控制，以確保實(shí)際閥位及時(shí)跟蹤閥位給定信號，實(shí)現(xiàn)自動(dòng)控制。

★ DFDA5000處于手動(dòng)狀態(tài)時(shí)，其功能類似一個(gè)操作器，可通過面板上的D鍵和Ñ鍵直接操作正轉(zhuǎn)輸出信號和反轉(zhuǎn)輸出信號，即按住D鍵時(shí)，輸出正轉(zhuǎn)信號，按住Ñ鍵時(shí)輸出反轉(zhuǎn)信號，松開按鍵后不輸出任何控制信號。

★ 實(shí)際閥位反饋輸出信號

實(shí)際閥位反饋輸出信號是DFDA5000輸出給前級的DCS系統(tǒng)或前級調(diào)節(jié)器的信號，其作用有二：一是使DCS系統(tǒng)隨時(shí)可監(jiān)測實(shí)際閥位。二是實(shí)現(xiàn)DFDA5000手動(dòng)轉(zhuǎn)自動(dòng)無擾切換使用。

★ 手自動(dòng)無擾切換

l DFDA5000自動(dòng)轉(zhuǎn)手動(dòng)時(shí)，以當(dāng)時(shí)的實(shí)際閥位反饋值作為初始值，開始手動(dòng)調(diào)節(jié)控制，因此自動(dòng)轉(zhuǎn)手動(dòng)是無擾的。

l DFDA5000手動(dòng)轉(zhuǎn)自動(dòng)操作

DFDA5000手動(dòng)時(shí)輸出一個(gè)手動(dòng)狀態(tài)信號給前級的DCS系統(tǒng)或調(diào)節(jié)器，DCS系統(tǒng)或調(diào)節(jié)器收到DFDA5000的手動(dòng)狀態(tài)信號后即停止PID運(yùn)算，并讓其控制輸出跟蹤閥位反饋信號，DFDA5000手動(dòng)轉(zhuǎn)自動(dòng)后手動(dòng)狀態(tài)信號撤消，DCS系統(tǒng)或前級調(diào)節(jié)器以當(dāng)時(shí)的輸出控制值為初始值恢復(fù)PID控制。這樣DFDA5000手動(dòng)轉(zhuǎn)自動(dòng)操作也是無擾的。

★ 遠(yuǎn)程手自動(dòng)控制

DFDA5000提供了遠(yuǎn)程手動(dòng)，遠(yuǎn)程閥門開和遠(yuǎn)程閥門關(guān)一組控制輸入信號，這組控制輸入信號只接受干觸點(diǎn)信號，其功能和面板上的A/M鍵D鍵和Ñ鍵的功能一樣。

★ 遠(yuǎn)程強(qiáng)制手動(dòng)

DFDA5000提供了遠(yuǎn)程強(qiáng)制手動(dòng)輸入信號，該信號只接受干觸點(diǎn)信號，通常和前級DCS和智能調(diào)節(jié)器的故障狀態(tài)輸入信號對接，用于在前級DCS和智能調(diào)節(jié)器發(fā)生故障時(shí)，DFDA5000能自動(dòng)轉(zhuǎn)到手動(dòng)狀態(tài)，使閥位保持不變，以實(shí)際閥位不因前級調(diào)節(jié)器或DCS系統(tǒng)的故障而失控。

★ 輸入輸出信號

l 閥位給定：0-10mA/4-20mA/0-5V/1-5V輸入通用。

l 實(shí)際閥位反饋信號輸入：0-10mA/4-20mA/0-5V/1-5V通用。

l 閥位反饋輸出：0-10mA/4-20mA/0-5V/1-5V可設(shè)定。

l 正轉(zhuǎn)、反轉(zhuǎn)輸出信號：41A/600V雙向可控硅控制，容量大，壽命長可驅(qū)動(dòng)各種規(guī)格的電動(dòng)調(diào)節(jié)閥門。

l 4個(gè)DI輸入：只接受干觸點(diǎn)信號。

l 手動(dòng)狀態(tài)繼電器輸出。

★ 單片機(jī)智能化設(shè)計(jì)，全部參數(shù)按鍵可設(shè)定，雙數(shù)顯、雙光柱顯示（豎表）。

★ 可帶RS485/ RS232隔離通訊接口。

技術(shù)參數(shù)

訂貨選型

型譜									說明
DFDA									帶伺服放大器的智能后備操作器
設(shè)計(jì)序列	5								開關(guān)電源
輸入信號類型		5							0-10mA輸入
		6							4-20mA輸入
		7							0-5V輸入
		8							1-5V輸入
輸出信號			0						可控硅正反轉(zhuǎn)驅(qū)動(dòng)信號輸出
			1						繼電器正反轉(zhuǎn)驅(qū)動(dòng)信號輸出
反饋輸入信號類型				5					0-10mA輸入
				6					4-20mA輸入
				7					0-5V輸入
				8					1-5V輸入
反饋輸出信號類型					5				0-10mA輸出
					6				4-20mA輸出
					7				0-5V輸出
					8				1-5V輸出
外形結(jié)構(gòu)						V			80×160×150mm雙數(shù)顯豎表
						F			96×96×110mm雙數(shù)顯方表
						SF			72×72×110mm雙數(shù)顯小方表
						GV			80×160×150mm雙光柱雙數(shù)顯豎表
供電電源類型									供電電源220VAC
							D		供電電源24VDC
通訊接口類型									不帶通訊接口
								RS232	RS232隔離通訊接口
								RS485	RS485隔離通訊接口
								Modbus	RS485隔離通訊接口（Modbus-RTU協(xié)議）

備注：96×96×110mm雙數(shù)顯方表無遠(yuǎn)程控制功能；72×72×110mm雙數(shù)顯小方表無遠(yuǎn)程控制功能，無繼電器正反轉(zhuǎn)驅(qū)動(dòng)信號輸出。

l 電源：220VAC或24VDC。

l 閥位給定輸入：0～10mA或4～20mA或0～5V或1～5V通用。

l 閥位反饋輸入：0～10mA或4～20mA或0～5V或1～5V通用。

l 閥位控制正反轉(zhuǎn)輸出：220VAC/15A

l 閥位反饋輸出：0～10mA或4～20mA或0～5V或1～5V通用。

l 手自動(dòng)狀態(tài)輸出：繼電器觸點(diǎn)220VAC/3A或24VDC/3A。

l 報(bào)警狀態(tài)輸出：繼電器觸點(diǎn)220VAC/3A或24VDC/3A。

l 通訊接口：RS485或RS232輸入輸出光電隔離。

l 遠(yuǎn)程手/自動(dòng)信號：干觸點(diǎn)輸入。

l 遠(yuǎn)程開閥門信號：干觸點(diǎn)輸入。

l 遠(yuǎn)程關(guān)閥門信號：干觸點(diǎn)輸入。

該公司產(chǎn)品分類：壓力計(jì) 數(shù)顯表記錄儀電線電纜顯示儀表料位儀物位儀液位計(jì) 物位儀表流量計(jì) 流量儀表溫度計(jì) 熱電阻熱電偶溫度儀表壓力表變送器壓力儀表壓力發(fā)生裝置校驗(yàn)儀

DFDA5000GV帶伺服放大器的智能后備操作器

DFDA5000是伺服放大器、手動(dòng)操作器和后備功能一體化智能產(chǎn)品，接收0－10MA/4-20MA/0-5V/1-5V閥位給定信號，輸出正反控制信號。適合于作為DCS系統(tǒng)回路調(diào)節(jié)控制輸出和智能調(diào)節(jié)器控制輸出的后備使用。　功能特點(diǎn)：　1　實(shí)際閥位反饋輸出信號　2　手自動(dòng)無擾切換　3　手自動(dòng)運(yùn)程控制　4　運(yùn)程強(qiáng)制手動(dòng) 　5　智能單片機(jī)設(shè)計(jì)，全部參數(shù)按鍵設(shè)定，雙數(shù)顯、雙光柱　6　可帶RS485/RS232隔離通訊接口