規格參數

  準確度等級：1.5
  測(ce)量(liang)范圍：0～0.1；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；0~25；0～40；0～60；-0.1~0；-0.1～0.06；

           -0.1～0.15；-0.1~0.3；-0.1～0.5：-0.1~0.9：-0.1～1.5；-0.1～2.4MPa

控制方式(shi)(shi)：感應(ying)式(shi)(shi)電流(liu)開關(引進(jin)德(de)國“p+f”公司的(de)器件)

工作電壓：8V DC
工作電流：通態≥3mA、斷態≤1mA
二限***小的間隔范圍：滿量程的2.5％
工作環境溫度：-10～55℃
重量：1.5kg

結構原理

 本儀(yi)表的(de)測量系統由(you)彈簧(huang)管、拉桿和齒輪傳(chuan)動(dong)機構(gou)(gou)、示值部件組成。被測介質的(de)壓(ya)力作用于(yu)彈簧(huang)管，使其自由(you)端產(chan)生(sheng)位移，由(you)拉桿傳(chuan)至(zhi)齒輪傳(chuan)動(dong)機構(gou)(gou)予以放大，并轉換成指(zhi)針(zhen)的(de)轉動(dong)，在度盤上指(zhi)示出被測壓(ya)力值。

 本儀(yi)表的(de)(de)(de)接(jie)(jie)點(dian)(dian)形式為(wei)(wei)感(gan)應接(jie)(jie)近開(kai)(kai)關(guan)(guan)，其關(guan)(guan)鍵器件——感(gan)應開(kai)(kai)關(guan)(guan)由德國的(de)(de)(de)“p+f公司”制造(zao)。接(jie)(jie)點(dian)(dian)發出(chu)位式信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)的(de)(de)(de)工作(zuo)原理以YXG-1520-B/21為(wei)(wei)例(li)加以說(shuo)明：當壓(ya)力(li)(li)為(wei)(wei)零時，上(shang)限(xian)(xian)(xian)(xian)接(jie)(jie)點(dian)(dian)輸(shu)出(chu)為(wei)(wei)小于1mA的(de)(de)(de)斷(duan)態(tai)(tai)(tai)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)，下(xia)限(xian)(xian)(xian)(xian)接(jie)(jie)點(dian)(dian)輸(shu)出(chu)為(wei)(wei)大于3mA的(de)(de)(de)通(tong)態(tai)(tai)(tai)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)。當壓(ya)力(li)(li)上(shang)升到達(da)(da)下(xia)限(xian)(xian)(xian)(xian)值(zhi)時，下(xia)限(xian)(xian)(xian)(xian)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)針(zhen)進入下(xia)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)的(de)(de)(de)縫(feng)隙中，使(shi)下(xia)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)電氣(qi)狀(zhuang)態(tai)(tai)(tai)改(gai)變(bian)(bian)，下(xia)限(xian)(xian)(xian)(xian)接(jie)(jie)點(dian)(dian)輸(shu)出(chu)立即跳變(bian)(bian)成(cheng)小于1mA的(de)(de)(de)斷(duan)態(tai)(tai)(tai)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)。當壓(ya)力(li)(li)繼續(xu)上(shang)升，下(xia)限(xian)(xian)(xian)(xian)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)針(zhen)保(bao)留(liu)，接(jie)(jie)點(dian)(dian)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)保(bao)持。當壓(ya)力(li)(li)上(shang)升到達(da)(da)上(shang)限(xian)(xian)(xian)(xian)值(zhi)時，上(shang)限(xian)(xian)(xian)(xian)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)針(zhen)被(bei)帶離上(shang)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)的(de)(de)(de)縫(feng)隙，使(shi)上(shang)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)的(de)(de)(de)電氣(qi)狀(zhuang)態(tai)(tai)(tai)改(gai)變(bian)(bian)，上(shang)限(xian)(xian)(xian)(xian)接(jie)(jie)點(dian)(dian)輸(shu)出(chu)立即跳變(bian)(bian)成(cheng)大于3mA的(de)(de)(de)通(tong)態(tai)(tai)(tai)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)。壓(ya)力(li)(li)繼續(xu)上(shang)升，信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)保(bao)持。當壓(ya)力(li)(li)回落至(zhi)上(shang)限(xian)(xian)(xian)(xian)值(zhi)時，上(shang)限(xian)(xian)(xian)(xian)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)又(you)插回上(shang)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)的(de)(de)(de)縫(feng)隙中，上(shang)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)又(you)回復(fu)原來狀(zhuang)態(tai)(tai)(tai)，使(shi)上(shang)限(xian)(xian)(xian)(xian)接(jie)(jie)點(dian)(dian)輸(shu)出(chu)跳變(bian)(bian)回小于lmA的(de)(de)(de)斷(duan)態(tai)(tai)(tai)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)。壓(ya)力(li)(li)繼續(xu)下(xia)降，信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)保(bao)持。當壓(ya)力(li)(li)下(xia)降至(zhi)下(xia)限(xian)(xian)(xian)(xian)值(zhi)時，下(xia)限(xian)(xian)(xian)(xian)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)針(zhen)又(you)被(bei)帶離下(xia)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)的(de)(de)(de)逢隙，下(xia)限(xian)(xian)(xian)(xian)感(gan)應開(kai)(kai)關(guan)(guan)又(you)回復(fu)原來的(de)(de)(de)狀(zhuang)態(tai)(tai)(tai)，使(shi)下(xia)限(xian)(xian)(xian)(xian)接(jie)(jie)點(dian)(dian)輸(shu)出(chu)跳變(bian)(bian)回大于3mA的(de)(de)(de)通(tong)態(tai)(tai)(tai)信(xin)(xin)號(hao)(hao)(hao)(hao)(hao)(hao)。

 本儀表與外(wai)設備用適當的(de)電路(lu)連接后，便能發出所(suo)需的(de)報警信號(hao)或開、停(ting)機(ji)等控(kong)制的(de)壓(ya)力的(de)動作，將(jiang)系統(tong)壓(ya)力控(kong)制在(zai)所(suo)需范圍(wei)內。

 本(ben)儀表為(wei)本(ben)質安全型(xing)儀表，當其(qi)與(yu)關聯設(she)備(bei)相聯后，便(bian)能構成本(ben)安防(fang)爆系統。