Fluid Control Edition 2003
• The quality of a sight (gauge) glass de- pends mainly on the chemical compo- sition and mechanical strength of the glass material. Constant glass quality is provided through glass analyses and acid/alkali tests. The mechanical strength is at- tained through thermal pre-stressing. Liquid level gauges The gauge glass is the most important component of the liquid level gauge. KLINGER gauge glasses are suit- able for installation in liquid level gauges of almost any make. We manufacture our gauge glasses our- selves and use exclusively “extra-hard” borosilicate glass which is subse- quently heat-treated. KLINGER gauge glasses have high me- chanical strength and are exceptionally resistant to alkalis, acids and boiler wa- ter (within the service limitation). Our glass testing laboratory carries out con- tinuously quality control tests: purity of glass, flaws in glass, dimensional accu- racy, etc. This ensures the high quality standard of KLINGER gauge glasses. We manufacture reflex and transparent glasses according to the most varied international standards. Fields of application: • Oil refineries • Petro-chemical plants • Pharmaceutical manufacture • Chemical processing • Mechanical engineering, especially manufacture of boilers and storage vessels • Foodstuffs and beverages industry • Water engineering • Paper and cellulose industry • Textile industry • Marine engineering • Nuclear engineering 2 Stress-optical view of thermally pre-stressed circular and long gauge glasses in polarized light KLINGER transparent glass (above) and reflex glass (underneath) Circular gauge glasses made from borosilicate glass “extra-hard”
• Reflex glasses The side facing the medium chamber is provided with moulded grooves set at 90° angles. The moulding process in- creases the resistance of the glass grooves to wear; the “skin” which the glass attains during moulding gives it maximum smoothness and hardness. This makes it extremely resistant to the attack of boiler water. Applications: Up to 35 bar saturated steam, reflex glasses provide the optimum solution: they are corrosion resistant and provide an absolutely clear indication. Reflex glasses can be used with all me- dia except steam at service conditions up to 400 bar or temperatures up to 400 °C. Transparent glasses KLINGER transparent glasses are also manufactured from “extra-hard” boro- silicate glass. The surfaces on both sides are finely ground and polished to ensure optimal transparency. Applications: In steam service above 35 bar and with media with a high pH-value. KLINGER transparent glasses must be protected by a mica shield on the side facing the medium chamber. Transpar- ent glasses should always be chosen for contaminated, viscous or corrosive media. Within the given service limita- tions they may be used for all media ex- cept steam at pressures up to 340 bar or temperatures up to 400.°C. Packing KLINGER gauge glasses are packed in individual cardboard boxes. In addition to the glass, each package contains a KLINGER sealing gasket and cushion gasket and forms a complete unit ready for installation. Note Only KLINGER original parts guarantee a trouble free operation of the gauge glasses. Therefore it is recommended to use only original spare parts for gauge glasses, mica shields, sealing gaskets and cushion gaskets. Standards We manufacture reflex and transparent glasses in series to the following stan- dards: OeNORM M 7354 (long gauge glasses) DIN 7081 (long gauge plate glasses) JIS B 8211 (Japanese Industrial Stan- dard) OMV-Spez. H 2009 (OMV-AG, Vienna) MIL-G-16356 D (US-Navy-Ships) Esso Eng. Spec. 123 (Esso Research & Engineering Co. – New Jersey) S..O..D. Spec. 123 (Standard Oil Devel- opment Company – New Jersey) BS 3463 (British Standard Institution). Quality control KLINGER reflex and transparent glasses are subject to continuous control dur- ing manufacture in order to guarantee exact dimensions, stress conditions, material composition and resistance to bending strain. 3 KLINGER transparent glass (left side) and reflex glass (right) in polarized light KLINGER package units for gauge glasses, sealing gaskets and cushion gaskets
• 4 All measurements in mm In the interest of technical progress, designs and dimensions are subject to modification Reflex glasses A, B, H Overall dimension (mm) Size Type A Weight g/piece Type B Weight g/piece Type H Weight g/pieceL B S L B D L B S 0 I II III IV V VI VII VIII IX X – 115 140 165 190 220 250 280 320 340 – – 30 30 30 30 30 30 30 30 30 – – 17 17 17 17 17 17 17 17 17 – – 118 146 176 200 237 265 303 334 359 – 95 115 140 165 190 220 250 280 320 340 370 34 34 34 34 34 34 34 34 34 34 34 17 17 17 17 17 17 17 17 17 17 17 110 132 162 195 228 264 301 338 387 410 461 – 115 140 165 190 220 250 280 320 340 – – 34 34 34 34 34 34 34 34 34 – – 22 22 22 22 22 22 22 22 22 – – 176 214 254 294 344 392 445 503 536 – KLINGER gauge glasses Applicational range reflex glasses Type A 1) Type B 1) Type H bar °C