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一、結構與用途 Sturcture and Use

電阻遠傳壓力表適用于測量對鋼及銅合金不起腐蝕作用的液體，蒸汽和氣體等介質的壓力。因為在儀表內部設置一滑線電阻式發送器，故可把被測值以電量值傳至遠離測量點的二次儀表上，以實現集中檢測和遠距離控制。此外，本儀表井能就地指示壓力，以便于現場工藝檢查。 YTT-150型差動遠傳壓力表是二線制本質安全塑防爆儀表，用于測量對銅及其合金不起腐蝕作用的液體，氣體和蒸汽的壓力。儀表帶上阻尼器后，可測量脈動、沖擊、突然御荷介質的壓力。帶上隔膜部分后，可測量大粘度、有腐蝕性介質的壓力。本儀表除就地進行壓力指示外，還連續輸出與被測壓力信號成線性的4-20mA直流信號，可以與DDZ-III電動單元組合儀表的顯示、記錄、調節儀表聯用，組成自動記錄、調節、控制等系統。適用于石油、化工、冶金、電站、輕工業等部門使用。
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

本儀表由一個彈簧管壓力表和一個滑線電阻式發送器組成。儀表機械部分的作用原理與一般彈簧管壓力表相同。由于電阻發送器系設置在齒輪傳動機構上，因此當齒輪傳動機構中的扇形齒輪軸產生偏轉時，電阻發送器的轉臂（電刷）也相應發得以偏轉，由于電刷在電阻器上滑行，使行被測壓力值的變化換為電阻值的變化，而傳至二次儀表，指示出一相應的讀數值。同時一次儀表也指示相應的壓力值。

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、技術參數及電路連接示意圖 Technique parameter and circuit sketch

型號 Model	精度等級 Precision grade	起始電阻 Original resistance	滿度電阻 Max resistance	測量范圍 range of measurement	連接螺紋 Joint screw
YTZ-100 YTZ-150 YTZ-150H YTZN-100 YTZN-150H YTT-150 YTZP-150	1.5 1.6	3~20 輸出信號 420mA 3~20 export signal 420mA	340~400 負載電阻 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	壓力Pressure
B	不銹鋼 Stainless steel
Z	真空 Vacuum
TZ	電阻遠傳 Resistance long distance transmeter
YZ	壓力真空 Pressure vacuum
N	耐震 Antivibration