主要特點：
● 采用硅橡膠或環(huán)氧樹脂密封結(jié)構，因此耐震、耐濕，適合在現(xiàn)場環(huán)境中安裝使用；
● 現(xiàn)場安裝在熱電偶，熱電阻的接線盒內(nèi)使用，直接輸出4-20mA、0-10mA的輸出信號。這樣既節(jié)約了昂貴的補償導線費用，又提高了信號遠距離傳輸過程中的抗干擾能力；
● 熱電偶變送器具有冷端自動補償功能；精度高、功耗低，使用環(huán)境溫度范圍寬，工作穩(wěn)定可靠；
● 適用范圍廣,即可以與熱電偶,熱電阻形成一體化現(xiàn)場安裝結(jié)構,也可以作為功能模塊安裝在檢測設備中和儀表盤上使用:
工作原理：
熱電偶或熱電阻傳感器被溫度轉(zhuǎn)換成電信號,再將信號送入變送器的輸入網(wǎng)絡,該網(wǎng)絡包含調(diào)零和熱電偶補償?shù)认嚓P電路。經(jīng)調(diào)零后的信號輸入到運算放大器進行信號放大，放大的信號一經(jīng)V/I轉(zhuǎn)換器運算處理后以DC4-20mA電流輸出；另一路經(jīng)A/D轉(zhuǎn)換器處理后到表頭顯示。變送器的線性化電路有兩種，均采用反饋方式。對熱電阻傳感器，用正反方式校正，對熱電偶傳感器，用多段折線逼近法進行校正。一體化數(shù)字顯示溫度變送器LCD顯示的采用兩線制方式輸出。
技術參數(shù)
1.輸入信號：熱電偶：K、E、J、B、S、T、N；熱電阻：Pt100、Cu50、 Cu100、（三線制、四線制），智能型溫度變送器的輸入信號可通過PC機或手操器任意設置；
2.輸出信號：在量程范圍內(nèi)輸出DC4-20mA電流信號，與熱電偶、熱電阻的輸入信號成線性或與溫度成線性。智能型溫度變送器輸出DC4-20mA電流信號同時疊加符合HART標準協(xié)議通信信號；
3.基本誤差：0.5%FS；0.2%FS；智能型0.2%FS;
4.接線方式：二線制；三線制;
5.顯示方式：四位LCD顯示溫度,智能型四位LCD可通過PC機或手操器設定使之顯示現(xiàn)場溫度，傳感器值，輸出電流和百分比例中的任一種參數(shù);
6.工作電壓：普通型12∽35V DC；智能型12V∽45V DC；額定工作電壓為24V DC;
7.允許負載電阻：500Ω（24VDC供電）;極限負載電阻R（max）=50（Vmin-12）,例如在額定工作電壓24V DC時,負載電阻可0-600Ω范圍內(nèi)選擇使用。
8.工作環(huán)境：
a：環(huán)境溫度 -25∽80℃（常規(guī)型）
-25∽70℃（數(shù)顯型）
b：相對溫度 5%∽95%
c：機械振動f≤50HZ,振幅≤0.15mm
d：無腐蝕氣體或類似的環(huán)境;
9.溫度影響系數(shù)：δ≤0.05%/℃
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TH-2000, TH-300A, TH-500A, TH-1000A, 90-2, 90-3, 真空泵： 2XZ-0.25, 2XZ-0.5, 2XZ-1, 2XZ-2, 2XZ-4, 2XZ-8, SHZ-III, SHZ-IIID, VC100A, 2XZ-2, SHB-3, DL-2004, DL-2010, DL-1030, DH10-100, DH20-100, DH20-200, SC-2, 1810D, RE52AA, RE52A, RE-5203A, RE-5000, RE-3000A, RE-3000B, RE-52-10A, SHZ-III, SHZ-3, 分析天平,精密天平,電子天平： AUW120D, AUW220D, AUW120, AUW220, AUW320, AUX120, AUX220, AUX320, AUY120, AUY220,UW420S,UW820S,UW4200S,UW8200S,UW220H,UW420H,UW620H,UW4200H,UW6200H,UX420S,UX820S,UX4200S,UX8200S,UX220H,UX420H,UX620H,UX2200H,UX4200H, UX6200H,TX223L,TX323L,TX2202L,TX3202L,TXC323L,BW12KH,BW22KH,BW32KH,BW32KS,BW52KS,BX12KH,BX22KH,BX32KH,BX32KS,BX52KS,BL-220H,BL-320H,BL-320S, BL-620S,BL-2200H,BL-3200H,BL-3200S,TXB222L,TXB422L,TXB622L,TXB2201L,TXB4201L,TXB6201L,TXB621L,TXB6200L,EL/ELB600SA, EL/ELB6000SA,EL/ELB-12K,EL/ELB120, 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