隔爆型，本安型帶熱電阻溫度變速器，SBWZ-4480/44SI，主要特點：
● 采用硅橡膠或環(huán)氧樹脂密封結(jié)構(gòu)，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(gòu),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(shù)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.基本誤差為：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%/℃
電熱恒溫干燥箱： 202-00,202-A-00,202-AB-00,202-0,202-A-0,202-AB-0,202-1,202-A-1,202-AB-1,202-2,202-A-2,202-AB-2, 202-3,202-A-3,202-AB-3, 202-4,202-A-4,202-AB-4,202V1, 202V2, PH030, LG050B, LG100B, LG165B, 電熱恒溫培養(yǎng)箱: DHP-9012,DHP-9032,DHP-9052,DHP-9082,DHP-9162,DHP-9272,DHP-9050,DHP-9080,DHP-9160,DHP-9270,HH.CP-01,HH.CP-T,HH.CP-01W,HH.CP-TW,HH.CP-01CRW,HH.CP-01CRW,MGC-300H,MGC-350HP303-00, 303-1, 303-2, 303-3, 303-4, 303A-00, 303A-1, 303A-2, 303A-3, 303A-4,303AB-00,303AB-1,303AB-2,303AB-3,303AB-4,360-BS-II,420-BS-II,360-S-II,420-S-II, 500-S-II,600-S-II,360-II,420-II,500-II,600-II,350-BS,400-BS,500-BS,600-BS,300-BS-II,400-BS-II,500-BS-II,600-BS-II,300-S-II,400-S-II,500-S-II,600-S-II,300-II,400-II,500-II,600-II,101-A0-BS-II,101-0-BS-II,101-1-BS-II,101-2-BS-II,101-3-BS-II,101-4-BS-II,101-A0-S-II,101-0-S-II,101-1-S-II, 101-2-S-II, 101-3-S-II, 101-4-S-II, 101-A0-II, 101-0-II, 101-1-II, 101-2-II, 101-3-II, 101-4-II, 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PH-101, PH-201, PH-301, PH-401, WG2010, 302A, SM10A, SM025, FQY010A, FQY015, FQY025, FQY050, FQY065, FQY160L,FB401A, 401A, 401AB, 401B, 402B, 151B, YS150, YW250, YG120, CTS-1, 冷藏箱： LZT 20-100, LZT 20-200, LZT 20-300, LZT 20-400, LZT 30-100, LZT 30-200, LZT 30-300,LZT 40-100, LZT 40-200, LZT 40-300,BRC200,BRC400,BRC800,MRC200,MRC400,MRC800, 凈化工作臺： SW-CJ-1D,SW-CJ-1G, SW-CJ-2D,SW-CJ-2G, SW-CJ-1F,SW-CJ-1FD, SW-CJ-2F,SW-CJ-2FD, SW-CJ-1BU,SW-CJ-1CU, SW-CJ-1B,SW-CJ-1C, SW-CJ-1FB,SW-CJ-2FB,VS-840-1, VS-840-2, BXS-A2,BCS-A2,BJ-1CD,BJ-2CD, CJ-820, CCJ-1650, VS-1300, HS-1300, SHJ-875, SHJ-1450, VD-650, VD-850, HD-650, HD-850, SW-CJ-1D, SW-CJ-1G, SW-CJ-2D, SW-CJ-2G, SW-CJ-1F, SW-CJ-1FD, SW-CJ-2F, SW-CJ-2FD, SW-CJ-1BU, SW-CJ-1CU, SW-CJ-1B, SW-CJ-1C, SW-CJ-1FB, SW-CJ-2FB, HS-840U, HS-1300U, VS840U, VS-1300U, BCM-1000, BHC-1300IIA/B3, SW-CJ-DD, SW-CJ-2DD, SW-TFG-12, SW-TFG-15, SW-TFG-18, SW-CJ-90, FLB-1B, FLB-1A, FLB-1C, FLB-1200, FLB-2400, FLB-3600, AAS-700AS, AAS-700AR, PAU-1000, ZJ-600, ZJ-800, 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