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电阻远传压力表

 

一、结构与用途 Sturcture and Use
 
      电阻远传压力表适用于测量对钢及铜合金不起腐蚀作用的液体,蒸汽和气体等介质的压力。因为在仪表内部设置一滑线电阻式发送器,故可把被测值以电量值传至远离测量点的二次仪表上,以实现集中检测和远距离控制。此外,本仪表井能就地指示压力,以便于现场工艺检查。
      YTT-150型差动远传压力表是二线制本质安全塑防爆仪表,用于测量对铜及其合金不起腐蚀作用的液体,气体和蒸汽的压力。仪表带上阻尼器后,可测量脉动、冲击、突然御荷介质的压力。带上隔膜部分后,可测量大粘度、有腐蚀性介质的压力。本仪表除就地进行压力指示外,还连续输出与被测压力信号成线性的4-20mA直流信号,可以与DDZ-III电动单元组合仪表的显示、记录、调节仪表联用,组成自动记录、调节、控制等系统。适用于石油、化工、冶金、电站、轻工业等部门使用。
      The resistance and long distance pressure meter is suit to measure the liquid ,steam. or gas which can't corrupt the cooper and steel. because this has a line resist-ance style transmitter, can transmit the signal to the second table.To get center check and control in long distance. Besides,this meter can note the pressure in pIace and easy technique check.
      YTT-150 slyle pressure diffrence power pressure is a kind of two line style anti-explode meter, to measure the liquid,gas, steam that has no corruption for cooper or steel. Can be check the pulse. rush, and break cease pressure ,After take the film,can be measure high adhibit and corrupt medium 's pressure. Except note the pressure, and can send the 4~20 mA DC signal, can be companied with the DDZ-III electro motion cell meter's show, record, control, and buildup auto record, adjust, conlrol system. Suit to been used in petrol, chemical metallurgy, power plant,light industry department.
 
二、工作原理 work principle
 
      本仪表由一个弹簧管压力表和一个滑线电阻式发送器组成。仪表机械部分的作用原理与一般弹簧管压力表相同。由于电阻发送器系设置在齿轮传动机构上,因此当齿轮传动机构中的扇形齿轮轴产生偏转时,电阻发送器的转臂(电刷)也相应发得以偏转,由于电刷在电阻器上滑行,使行被测压力值的变化换为电阻值的变化,而传至二次仪表,指示出一相应的读数值。同时一次仪表也指示相应的压力值。
      This meter composes by spring pressure meter and a line resistance transmitter. The mechanic part principle is same with normal spring pipe meter. When the gear has deflexion, the transmitter's brush also detlexion, and the pressure change cause resistance change,and transmit to the second tahle, and note the same number. At the same time, the original meter also shows this number.
 
三、技术参数及电路连接示意图 Technique parameter and circuit sketch
 
型号
Model
精度等级
Precision grade
起始电阻
Original resistance
满度电阻
Max resistance
测量范围
range of measurement
连接螺纹
Joint screw
YTZ-100
YTZ-150
YTZ-150H
YTZN-100
YTZN-150H
YTT-150
YTZP-150
1.5
1.6
3~20
输出信号
420mA
3~20
export signal
420mA
340~400
负载电阻
350Ω~350Ω
340~400
loaded resistance
350Ω~350Ω
0.1~0、0~0.16、0~0.25、0~0.4、0~0.6、0~1、 0~1.6、0~2.5、0~4、0~6、0~10、0~16、0~100、0~25、0~40、0~60、-0.1~0、-0.1~0.06、-0.1~0.15、-0.1~0.3、-1~0.5、-1~0.9、-0.1~1.5、-0.1~2.4 M20×1.5

Y 压力Pressure
B 不锈钢 Stainless steel
Z 真空 Vacuum
TZ 电阻远传 Resistance long distance transmeter
YZ 压力真空 Pressure vacuum
N 耐震 Antivibration
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