Sight Glass Level Gauges

Wika Sight Glass Level Gauges

The gauge body, which is the core component of WIKA's glass level gauges, provides continuous and direct level indication without the need for supply power. It has been machined with a liquid channel. Glasses, mica shields, process connections, and valve heads are other components. For some applications at extreme temperatures, mica shields are advised.

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Model LGG

Applications

Continuous level indication without supply voltage
Direct indication of the level
Individual design and corrosion-resistant materials make the products suitable for a broad range of applications
Chemical industry, petrochemical industry, oil and natural gas extraction (on- and offshore), shipbuilding, machine building, power generating equipment, power plants
Oil and gas, heat transfer and refrigeration systems, plants for cryogenics

Special features

Process- and procedure-specific production
Operating limits:
- Operating temperature: -196 ... +374 °C¹⁾
- Operating pressure: Vacuum to 250 bar¹⁾
Wide variety of different process connections and materials
Illumination optional
Heating and/or insulation optional

1) Individual limit values. For application limits, the joint consideration of temperature and pressure is required!

Description

The main element of the glass level gauge is the gauge body. Incorporated into this gauge body are the liquid channel (if necessary the heating channel) and the seating faces for the chambered seals and sight glasses. Onto the gauge body are mounted, or are already integrated, the valve heads and process connections. Drain or vent are also possible.

The glasses and/or mica shields as well as the seals are fitted, secured and sealed with the aid of U-bolts and covers or pressure frames. Glasses from borosilicate glass in accordance with DIN 7081 are used. For steam, the glasses can be used up to 243 °C, with mica design to 300 °C. For other media, temperatures up to 300 °C are possible, in special cases up to 374 °C. The use of mica is needed for specific applications.