Structural principle:The SG49W boiler dual color quartz tube level gauge utilizes light to exhibit different refractive indices and reflection characteristics in different media, and uses a color filter to make the liquid phase green and the gas phase red, with dual color display and extremely clear gas-liquid interface.

Characteristic comparison:(SG49WType andB49Xtype)

Main technical indicators:
Measurement range (installation center distance): 300, 350, 440, 500 ······· 2000mm
● Visual height: 100, 150, 240, 300 ········ 1800mm
● Working pressure of the tested medium: 1.6，2.5，4.0，6.4MPa
● Working temperature:- 10℃~+450℃
● Heat tracing steam pressure: ≤ 0.6MPa
● Steam jacket size: G1/2 "external thread
Observation distance: 15M (natural light) 50M (with lighting)
● Display color code: water phase green, gas phase red
● Lighting: 36V AC 6W
Interface flange: Adopting the flange standard HG20592~20635-97 issued by the Ministry of Chemical Industry in 1997. Flange diameter DN20, DN25， If users need to adopt other standards (such as GB, ANSI, DIN, etc.), they can design according to their needs.

instructions:
When using the water level gauge, the valve should be slowly opened to allow liquid to enter, and then the special glass tube should be preheated for 20-30 minutes. After reaching a certain temperature, the valves at both ends can be fully opened to allow water or other media to enter.
During use, it is required to regularly discharge pollutants to avoid blockage of channels due to erosion and false water levels.
When the quartz tube is accidentally damaged, using the upper and lower handles of the instrument to turn the plugs of the upper and lower plugs 90 degrees can prevent the medium in the container from continuing to flow out. At this time, the damaged parts can be replaced.


Transportation, storage, installation, use, and maintenance:
The packaged water level gauge can be transported by conventional means of transportation, but it should be avoided from severe vibration and direct erosion by rain and snow.
The water level gauge should be placed in a dry and ventilated room with a temperature of 0-40 ℃ and a relative humidity of no more than 80%. The outdoor air should not contain any corrosive medium to the instrument.
The water level gauge must be installed vertically, with a vertical deviation of less than 3 °.
A shut-off valve should be installed between the water level gauge and the container to isolate it from the medium during cleaning and maintenance.
According to the condition of the medium, the main body tube should be cleaned regularly to remove debris inside the tube.

Ordering Notice:● Model specifications ● Measurement range (center distance L) ● Working pressure ● Working temperature ● Material requirements ● Flange standards