Reflex Level Gauge

The reflex level gauge shows liquid level by light refraction, using the difference in refractive index between liquid and vapour. The gauge glass has prismatic right-angled grooves on the side facing the liquid: in the liquid-filled section the light is absorbed and the glass appears dark, while in the gas- or air-filled section the light is totally reflected and the glass appears bright. The result is an easy-to-read level line that needs no power supply or illuminator. Fully enclosed in a fabricated carbon steel body, the gauge suits boilers, deaerators, process and power plants.

Features

• Single glass level gauge with prismatic reflex glass, standard type A, size 30 mm
• Fully covered by a fabricated carbon steel body
• Pressure ratings PN16, PN25 and PN40
• Standard flanges DN20/PN40 or DN20/ANSI 300
• Wide choice of models from 285 mm to 2590 mm minimum centre-to-centre distance

How it works

• Liquid-filled area absorbs the light and appears dark
• Gas- or air-filled area totally reflects the light and appears bright
• The boundary between dark and bright marks the level

Benefits

• Easy level reading
• Low operating cost
• Assured level indication without power supply
• Daylight is enough; no illuminator needed

Applications

• Boilers
• Surge vessels and deaerators
• Process and power plants
• Chemical industries
• Food and beverage industries

LKS supplies the reflex level gauge in Malaysia, with installation and after-sales support. Contact our engineers for model selection and a quotation.