Transparent flat gauge glass, also called transparent sight glass, transparent level glass and transparent level gauge, is usually made of borosilicate glass and aluminosilicate glass. The glass is manufactured into the strip shape and used in boiler or some instruments for observing the liquid level.
Transparent type is also manufactured from "extra-hard" borosilicate glass. The surfaces on both sides are finely smooth and ensure optimal transparency.
A) One is as same with reflex Gauge Glasses,use molds to make the semi-finished products,afterwards,ground and polish the two side to ensure optimal transparency. By this manufacturing technique,the definition isn't good.
B)The other manufacturing technique is made of High Borosilicate sheet of 17mm thickness, cut the glass sheet according the detailed size and polish the side face for the smooth.This manufacturing technique glass is very clear,but the goods cost is higher.
It can be used with all media at service conditions up to 6MPa and temperatures up to 430 degrees centigrade.
Green Plain Gauge Glass
This green gauge glass is a kind of used in the field of petroleum, chemical industry, metallurgy, electric power, food, medicine.
In the other two sides fired green glass glaze. According to the optics refraction principle, in the absence of liquid, from the glass facade, can clearly see the green color on the surface. When the fluid in the liquid level meter, the refractive index of glass and liquid is the same, the color will not be reflected, can see the white.
The sizes are all customized according to clients' requests.
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