详细介绍: 上海幻通温度变送器将温度传感元件(热电阻或热电偶)与信号转换放大单元有机集成在一起,用来测量各种工艺过程中-200-1600℃范围内的液体、蒸气及其它气体介质或固体表面的温度。它通常和显示仪表、记录仪表以及各种控制系统配套使用。它具有结构简单,安装、使用、维修方便的特点,目前已广泛用于石油、化工、冶金、电站、轻工等部门。
温度变送器分为普通型、021-56041298隔爆型和数显一体化三类。其中,普通型与隔爆型可以选择不同的内
置温度变送器模块,以满足用户不同的应用要求。温度变送器按温度传感器不同,又分为热电偶和热电阻
两种系列。
二、工作原理
温度变送器是由温度传感器和信号转换器组成,信号转换器安装在温度传感器的冷端接线盒内,温度传感器受温度影响产生电阻或电势效应,经转换产生一个差动电压信号。此信号经放大器放大,再经电压、电流变换,输出与量程相对应的4-20mA 的电流信号。三、产品特点
1. 二线制传送。信号转换器供电的两根导线同时也传送输出信号;
2. 输出恒流信号(4-20mA)。抗干扰能力强、远传性能好;
3. 信号转换器用环氧树脂封装成模块,具有抗震动、耐腐蚀、防潮湿等优点,可用于条件较差的场所;
4. 热电偶的毫伏信号经信号转换器直接转换成4-20mA 电流输出,用普通电缆线传送信号,可省去价格
昂贵的补偿导线;
5. 带现场显示的温度变送器既输出4-20mA 的电流信号,又能在测温现场读到实测温度,经操作人员带
来很大方便;
6. 精度高、抗干扰、长期稳定性好、免维护、可远传(最远达1000 米)三、主要技术指标
1. 量程:-200~1800℃;
2. 常规精度:±0.25%FS;
3. 供电电压:13~30VDC;
4. 负载电阻:0~250 ? ;
5. 输出信号:4~20 mA;
6. 基本误差:±0.2%FS,0.5%FS;
7. 显示方式:液晶显示:
8. 环境温度影响:0.25%/10℃;
9. 冷端补偿误差:0.5%/10℃;
10.防爆标志:dⅡBT4
11. 防护等级:IP65;
12. 输入类型:热电阻、Pt100二线或三线、热电偶(所有已知类型)
13. 环境温度:-40-65℃,带显示型为了10-70℃;
14. 环境湿度:0-95%RH,不冷凝;
15. 显示选项:指针表或数字LCD 显示器可选:
16. 保护管材质:1Cr18Ni9Ti 或陶瓷或钢玉管;
WRE-15B,WRN2-15B,WRE2-15B,WRN-15AB,WRE-15AB,WRN2-15AB,WRE2-15AB,WRN-4318,WRE-4318,,WN2-4318,
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WRN2-420, WRE-420, WRE-420A, WRE2-420, WRN-430, WRN2-430, WRE-430, WRE2-430, WRN-520, WRN2-520, WRE-520,, WRE2-520, WRN-530, WRN2-530, WRE-530, WRE2-530, WRN-621, WRN-621A, WRN2-621, WRE-621, WRE-621A, WRE2-621, WRN-631, WRN2-631, WRE-631, WRE2-631. 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