Ashcroft A6400 설치 및 유지보수 지침 매뉴얼 - 페이지 5

{카테고리_이름} Ashcroft A6400에 대한 설치 및 유지보수 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Ashcroft A6400 8 페이지. Absolute pressure gauge

2.7 Environmental protection

This device may optionally contain a filling liquid (e.g. glycerin or silicone oil). The provisions set out in the

regulation s u c h a s R E A C H on production and use of chemicals are to be respected, and the relevant safety

data sheets from the manufacturers of the chemicals are available on our website for download.

3 Technical data

The detailed technical information can be found in the product datasheet.

The label with the product information is located on the outside of the housing.

5.1 Overview

Diaphragm

Link

Movement

5.2 Description of function

The sensing system consists of two pressure chambers, separated

by a diaphragm (1). The upper pressure chamber contains a high level vacuum and provides the reference for

absolute pressure measurement.

Pressure to be measured is applied to the pressure connection and the lower pressure chamber. The sensing

element, a diaphragm, will be exposed from lower side with pressure. Under pressure the elastic diaphragm is

deflecting against the zero position. This deflection is proportional to the adjacent pressure. The link and movement

transfer the deflection to the pointer.

The display of the measured value is given on a 270° scale.

5.3 Description of components

5.3.1 Scale with pointer

The pressure gauge is equipped with a dial face and pointer similar to EN 837-3, nominal size 100 mm or 160 mm.

5.3.2 Instrument connection

The instrument connection is located on the bottom side of the pressure gauge and is a threaded connection.

5.3.3 Vent valve

The vent valve for the housing is located on the top side. If the nipple is pulled out, the housing is ventilated

and the pressure which has built up in the housing due to the influence of temperature is discharged. With

the valve closed, protection class IP 66(dry gauge) is achieved. Liquid filled gauges should be vented for

temperature compensation.

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