描述
熱電偶測(cè)溫儀大都帶有冷端補(bǔ)償系統(tǒng),我們采用“直接尋找補(bǔ)償值”方法來(lái)消除補(bǔ)償導(dǎo)線引起的誤差。以性能穩(wěn)定的直流電壓發(fā)生器或熱電偶溫度校驗(yàn)儀作為源，以高精度數(shù)字多用表作為主標(biāo)準(zhǔn)器進(jìn)行監(jiān)測(cè)，從而對(duì)高精度熱電偶測(cè)溫儀進(jìn)行校準(zhǔn)。同時(shí)，對(duì)冷端補(bǔ)償進(jìn)行單獨(dú)的計(jì)量，更加準(zhǔn)確地校準(zhǔn)高精度熱電偶測(cè)溫儀。性能穩(wěn)定的直流電壓發(fā)生器或熱電偶溫度校驗(yàn)儀通過(guò)數(shù)字按鍵，輸入熱電偶測(cè)溫儀所需校準(zhǔn)溫度點(diǎn)熱電勢(shì)。該模擬熱電勢(shì)值由高精度數(shù)字多用表作為主標(biāo)準(zhǔn)器進(jìn)行監(jiān)測(cè)，以調(diào)節(jié)熱電偶溫度校驗(yàn)儀輸出熱電勢(shì);此時(shí)被校高精度熱電偶測(cè)溫儀再通過(guò)放大、濾波、A/D轉(zhuǎn)換采樣(或在A/D芯片進(jìn)行放大、濾波和A/D轉(zhuǎn)換采樣)獲取信號(hào)的數(shù)字信息，最后通過(guò)單片機(jī)(或嵌入式系統(tǒng))將采集所得數(shù)字信息通過(guò)軟件由于冷端補(bǔ)償法的使用點(diǎn)多面廣，與熱電偶配用的溫度二次儀表大都帶有冷端補(bǔ)償系統(tǒng)，對(duì)這類儀表的檢測(cè)是溫度二次儀表檢測(cè)的一個(gè)重要部分。參照J(rèn)JG617-1996《數(shù)字溫度指示調(diào)節(jié)儀》檢定規(guī)程的規(guī)定，對(duì)與熱電偶配用的數(shù)字溫度二次儀表的基本誤差的檢測(cè)，采用的方法是將被檢儀表連接補(bǔ)償導(dǎo)線插入冰點(diǎn)器，再用銅導(dǎo)線與信號(hào)源連接,輸入直流電壓信號(hào)來(lái)測(cè)量?jī)x表的誤差。考慮到以下幾個(gè)方面:補(bǔ)償導(dǎo)線盡管有20℃時(shí)的修正值，其修正值本身的擴(kuò)展不確定度U=0.3℃(k=2);由于材料氧化、彎折而引起應(yīng)力變化等會(huì)帶來(lái)性能的漸變及熱電偶的不穩(wěn)定;溫度差異帶來(lái)的修正值的差異，冷端溫度并不一定是20℃，而修正值一律采用20℃時(shí)的修正數(shù)據(jù)，存在一定誤差。采用直接尋找補(bǔ)償值，來(lái)消除補(bǔ)償導(dǎo)線引入的誤差。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。
主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門(mén)子，摩托羅拉，安川。力士樂(lè)。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家
ALLEN-BRADLEY 1391B-AA45/D AC SERVO CONTROLLER
SIEMENS S7-300 SIMATIC PLC SYSTEM 315-2AF03-0AB0 CPU
SIEMENS 6ES5955-3LC42 POWER SUPPLY MODULE
TIMKEN M241549/M241510 TAPERED ROLLER BEARING,NEW
34 ALLEN-BRADLEY 800T SERIES PUSH BUTTONS,MIXED
NORDSON 8514893 HOT MELT GLUE GUN,NEW
BALDOR ZD18H203-E AC FLUX VECTOR DRIVE,3HP
SIEMENS 6SN1118-0AA11-0?AA1 SINGLE AXIS DRIVE
3 GUHRING 23MM SOLID CARBIDE COOLANT DRILLS,TIN,NEW
TELESIS TMC420/TMP 1700 PINSTAMP & CONTROLLER
NEWALL 7B211000 DP7 DIGITAL READ-OUT,AXIS,S?CALE
ALLEN-BRADLEY 2711-T6C2L1 PANELVIEW 600 OIP W/AIC+
30 ALLEN-BRADLEY PUSH-PULL START-STOP BUTTONS,PILOTS
RELIANCE ELECTRIC 0-51874-2 STATIC SEQUENCE CARD
ALLEN-BRADLEY 2711-K5A8 PANELVIEW 550 INTERFACE,NEW
BALDOR ZD18H430-EO VECTOR DRIVE,NEW
ANN ARBOR INX6TTPIII850-T?FT INDUSTRIAL COMPUTER
FANUC A06B-6050-H104 VELOCITY CONTROL UNIT
ALLEN-BRADLEY 1394C-AM07 AC SERVO AXIS CONTROLLER,NEW
INDRAMAT HDS02.2-W040N-H?S12-0 AC DIGITAL SERVO DRIVE
NEWALL 7B211000 DP7 DIGITAL READ-OUT,AXIS,S?CALE
FANUC A06B-6058-H222 SERVO AMPLIFIER
SQUARE-D KA36200 200 AMP CIRCUIT BREAKER I-LINE
DART MD10P DC SPEED CONTROL DRIVE,W/PU-20E PICKUP,NEW
5 POUNDS KESTER 24-7068-9720 LEAD FREE SOLDER 1mm
SIEMENS 505-6851-A REMOTE BASE CONTROLLER,NEW
24 ALLEN-BRADLEY PILOT LIGHT PUSH-BUTTONS,KE?YED,MIXED
5 WILSON/STRIPPIT 1-1/4″STYLE OBROUND PUNCHES & DIES,
ALLEN-BRADLEY 1785-V40B PLC-5 VME RIO CONTROLLER
ALLLEN-BRADLEY F-4050-Q-H04AA AC SERVO MOTOR,2.5 KW
ALLEN-BRADLEY F-4050-Q-H04AA AC SERVO MOTOR,2.5KW
ALLEN-BRADLEY 1394C-AM04 AC SERVO AXIS MODULE,3KW
ALLEN-BRADLEY 1756-A17 CONTROLLOGIX PLC RACK,17-SLOT
BALDOR DC ADJUSTABLE SPEED MOTOR DRIVE
3 WILSON TOOL 1-1/4″STYLE SQUARE PUNCHES & DIES
1 SET STI MS4324 SAFETY LIGHT CURTAINS,LCC CONTROLLER
40 3M 07526 SCOTCH-BRITE 3″ BRISTLE DISCS,50GRADE,R?OLOC
1 SET FAFNIR 2MM9109WI-DUL SUPER-PRECISION BEARINGS
2 KENNAMETAL NSR-163D NL7 LATHE INSERT TOOL HOLDERS
2 HPI ER-32 COLLET CHUCKS,CAT-40,T?OOL HOLDER
NORTON 5″x1-3/4″x1-1/4?” CBN GRINDING WHEEL NEW
RELIANCE ELECTRIC S-4075-R-H00AA SERVO MOTOR
2 CUTLER-HAMMER ED3225 3-POLE CIRCUIT BREAKER,225 AMP
SQUARE-D Q2-32125 125 AMP CIRCUIT BREAKER I-LINE
KENNAMETAL? 11-5/8″X 1-1/2″ BORING BAR,A24UMCLNR4 NC7
WILSON .250″X4″ THICK TURRET RECTANGLE PUNCH & DIES
SQUARE-D AW-2 ELECTRONIC FOOT SWITCH,600VAC/D?C,COVERE
BERGER LAHR RDM 51117/50 STEPPING MOTOR,NEW
銷售熱線：18150087953