Product Instruction
Glass plate level gauge is divided into three kinds: transparent type glass plate level gauge, reflection-type glass plate level gauge and sight glass type glass plate level gauge. The level gauge is mainly composed by level gauge’s body, upper valve (gas valve), lower valve (liquid valve), drain valve, insurance steel ball and so on.
When the glass plate have some cracks or be damaged, the insurance steel ball will automatically stop the side valve of gas and liquid to avoid or reduce flowing. So the worker can cut off the bottom valve to handle it. This series product is stable, sealed and reliable, simple installation, which is ideal instrument for detecting for liquid level in all kinds of containers with middle or low pressure.
Connecting the upper and lower flanges of this level gauge with the upper and lower flanges of the container to form a permeator, then the height of liquid can be directly seen.
Product Structure
Reflex Level Gauge
It contains a flat glass with several grooves. According to the light refraction and reflection laws, the light enters directly from the smooth surface of the glass and refracts inside the liquid, making this area become dark. However, if the light hits the air part, it reflects, making this area become bright. In this way, the liquid level is observed. It is mainly used to observe the level of colorless, transparent liquids.
Technical Data
Measuring range: 300–2000 mm
Working pressure: ≤ 10 MPa
Working temperature: -20 °C to 450 °C
Visible range: 100 mm – 300 mm per section
Chamber material: carbon steel, stainless steel, titanium
Glass material: toughened high borosilicate glass, quartz glass, aluminosilicate glass
Connection: thread, flange, clamp, welding
Display: single color, double color (air displays red and water displays green)
Transparent Level Gauge
It mainly consists of a chamber and 2 transparent flat glasses installed before and after the chamber. The light enters from the back of the level gauge to illuminate the chamber between the two glasses, so that the operator can observe the liquid level from the front. It is mainly used to observe the level of opaque or colored liquids.
Technical Data
Measuring range: 300–3000 mm
Working pressure: ≤ 22 MPa
Working temperature: ≤ 550 °C
Visible range: 100 mm – 300 mm per section
Chamber material: stainless steel 301, 316L, carbon steel
Glass material: borosilicate glass, aluminosilicate glass, quartz glass
Connection: flange, thread
Surface treatment: galvanized, lacquer finish
Display: single color, double color (air displays red and water displays green)
No Blind Zone Transparent Level Gauge
Glass plates on both sides are arranged in a staggered pattern. The blind zone of one side can be observed from the other side, thus eliminating the blind zone problem exists in ordinary glass plate level gauge to achieve the purpose of continuous indication within the whole measuring range.
Measuring range: 300–3600mm
Working pressure: ≤ 16 MPa
Working temperature: ≤ 450 °C
Visible range: 100 mm – 300 mm per section
Chamber material: stainless steel 304, 316L, 20#
Glass material: borosilicate glass, aluminosilicate glass
Connection: flange, thread
Display: single color, double color (air displays red and water displays green)
Quick Opening Glass Plate Level Gauge
The 90° quick opening and quick closing function of the valve at both ends of the liquid level gauge solves the problem that needle valve requires too long period for opening and closing and needs to rotate the handle for many turns. In this way, it saves the time of switching the valve to a certain extent, thus ensuring the efficiency of the normal work and maintenance.
Measuring range: 285–2590 mm(can be customized)
Working pressure: 1.6–6. 0MPa
Working temperature: ≤ 450 °C
Chamber material: carbon steel
Glass material: borosilicate glass, aluminosilicate glass
Surface treatment: galvanized, lacquer finish
Connection: flange
Double Colored Boiler Liquid Level Gauge
HY series double colored liquid level gauges are a local instrument specially designed and manufactured for monitoring the liquid level of the boiler drum of the thermal power set. It can realize remote monitoring if it is equipped with a supporting TV monitoring system.
Measuring range: 600, 670 mm (or customized upon request)
Working pressure: ≤ 22 MPa
Working temperature: saturated steam water temperature
Visible range: 100 mm – 300 mm per section
Material: 20#
Display: air displays red and water displays green, double colored
Connection: flange or welding ɸ28× 4 mm
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