隔爆型，本安型带热电阻温度变速器，SBWZ-4480/44SI，主要特点：
● 采用硅橡胶或环氧树脂密封结构，因此耐震、耐湿，适合在现场环境中安装使用；
● 现场安装在热电偶，热电阻的接线盒内使用，直接输出4-20mA、0-10mA的输出信号。这样既节约了昂贵的补偿导线费用，又提高了信号远距离传输过程中的抗干扰能力；
● 热电偶变送器具有冷端自动补偿功能；精度高、功耗低，使用环境温度范围宽，工作稳定可靠；
● 适用范围广,即可以与热电偶,热电阻形成一体化现场安装结构,也可以作为功能模块安装在检测设备中和仪表盘上使用:
工作原理：
热电偶或热电阻传感器被温度转换成电信号,再将信号送入变送器的输入网络,该网络包含调零和热电偶补偿等相关电路。经调零后的信号输入到运算放大器进行信号放大，放大的信号一经V/I转换器运算处理后以DC4-20mA电流输出；另一路经A/D转换器处理后到表头显示。变送器的线性化电路有两种，均采用反馈方式。对热电阻传感器，用正反方式校正，对热电偶传感器，用多段折线逼近法进行校正。一体化数字显示温度变送器LCD显示的采用两线制方式输出。
技术参数
1.输入信号：热电偶：K、E、J、B、S、T、N；热电阻：Pt100、Cu50、 Cu100、（三线制、四线制），智能型温度变送器的输入信号可通过PC机或手操器任意设置；
2.输出信号：在量程范围内输出DC4-20mA电流信号，与热电偶、热电阻的输入信号成线性或与温度成线性。智能型温度变送器输出DC4-20mA电流信号同时叠加符合HART标准协议通信信号；
3.基本误差为：0.5%FS；0.2%FS；智能型0.2%FS;
4.接线方式：二线制；三线制;
5.显示方式：四位LCD显示温度,智能型四位LCD可通过PC机或手操器设定使之显示现场温度，传感器值，输出电流和百分比例中的任一种参数;
6.工作电压：普通型12∽35V DC；智能型12V∽45V DC；额定工作电压为24V DC;
7.允许负载电阻：500Ω（24VDC供电）;极限负载电阻R（max）=50（Vmin-12）,例如在额定工作电压24V DC时,负载电阻可0-600Ω范围内选择使用。
8.工作环境：
a：环境温度 -25∽80℃（常规型）
-25∽70℃（数显型）
b：相对温度 5%∽95%
c：机械振动f≤50HZ,振幅≤0.15mm
d：无腐蚀气体或类似的环境;
9.温度影响系数：δ≤0.05%/℃
电热恒温干燥箱： 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, 电热恒温培养箱: 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, 净化工作台： 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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