Zoriver JBH-100 全不銹鋼膜片式絕壓表用于絕壓力測量壓力表
JBH-100 全不銹鋼膜片式絕壓表
JBH-100 All Stainless Steel Diaphragm Absolute Pressure Gauge
產(chǎn)品簡介Application
絕壓表主要用于監(jiān)視或測量某些真空設(shè)備(如真空包裝機(jī)械、監(jiān)測冷凝壓力和液體的蒸氣壓
力的設(shè)備等)中*對壓力的儀表。
Absolute pressure gauge use to watch or measure some vacuum equipments (for example: vacuum packing machine, watch condensation pressure and liquid steam pressure equipment.) which is absolute pressure gauge.
*對壓力是指以*對壓力零位(*對真空)作基準(zhǔn)，高于*對壓力零位的壓力。
Absolute pressure means when absolute pressure is zero (absolute vacuum), the pressure which hyper absolute pressure zero.
*對壓力值一般可用下式表示：
Absolute pressure can be figured by the following:
*對壓力值 = 真空度(負(fù)壓)值 + 大氣壓力值
Absolute pressure=vacuum (negative pressure) value + atmosphere pressure value
工作原理Working Principle
膜片式絕壓表由內(nèi)腔、外腔和機(jī)芯三部分組成。內(nèi)腔是由膜片、上接體和波紋管組成一真空腔，其真空腔內(nèi)按儀表不同的量程抽至不同的真空度(負(fù)壓)。外腔是由膜片和下接體組成，并通過接頭直通大氣或真空泵。在對絕壓表外腔抽真空(負(fù)壓)時，在抽至絕壓表的上限前，由于內(nèi)腔的負(fù)壓大于外腔負(fù)壓，指針應(yīng)停留有上限位置。只有外腔負(fù)壓大于內(nèi)腔負(fù)壓時，膜片則向下發(fā)生位移，并通過傳遞桿帶動機(jī)芯上扇齒，使指針發(fā)生偏轉(zhuǎn)，以達(dá)到測量*對壓力的目的。
Diaphragm absolute pressure gauge is composing of inner cavity, outer cavity and movement. Inner cavity is a vacuum cavity, which is composing of diaphragm, upper parts and bellows vacuumize according to the different ranges. Outer cavity is composing of diaphragm and lower parts; connect to atmosphere or vacuum pump by the socket. When outer cavity is vacuum (negative pressure), before vacuumize absolute pressure to the upper limit, negative pressure of inner cavity is higher than outer cavity’s. The pointer should on zero. When the negative pressure of outer cavity is higher than inner cavity’s, the diaphragm has down displacement, and drive the movement teeth by transfer shank, the pointer has excursion, so can measure the absolute pressure.
主要技術(shù)參數(shù)Specification
● 外殼直徑 ：100mm
Case Diameter: 100mm
● 接體直徑 ：160、100 mm
Seals Diameter: 160,100mm
● 工作溫度：-20 ~ +60℃
Ambience: -20 ~ +60℃
● 量程：0~10/ 16/25/40/ 60/ 100 kPa abs
Range: 0-10/16/25/40/60/100kpa abs
● 精度：1.6 級
Accuracy: 1.6
● 過壓保護(hù)：≥ 量程的10 倍壓力
Overpressure Protect: 10 times of the range
● 連接螺紋：20 × 1.5
Thread: 20X1.5
絕壓表外形尺寸圖
Absolute pressure dimension drawing
絕壓表工作原理圖
Absolute pressure working principle drawing |
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