Ashcroft A6400 Інструкція з монтажу та обслуговування - Сторінка 5
Переглянути онлайн або завантажити pdf Інструкція з монтажу та обслуговування для Вимірювальні прилади Ashcroft A6400. Ashcroft A6400 8 сторінок. Absolute pressure gauge
Друкувати сторінку2.7 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.
4 Labeling on the device
The label with the product information is located on the outside of the housing.
5 Construction and function
5.1 Overview
1
Diaphragm
2
Link
3
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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