Standard_Parts_Catalogue

Page 1564 | 3.5 Controlling, Venting, Sealing of Liquids and Gases GN 650 GN 650.1 Oil Level Indicators Screw Steel, Zinc Plated Screw Stainless Steel 1 l 1 2 Type How to order (Screws steel) 1 2 GN650-127-A 1 l 1 2 Type How to order (Screws stainless steel) 1 2 GN650.1-76-B 2 Type A Without thermometer B With thermometer 1 l 1 b d l 2 l 3 l 4 l 5 l 6 l 7 s ≈ Thermometer scale Max. wall thickness °C °F  76 27 M10 21  40 106 18 15 16 12 20 ... 100 68 ... 210 127 31 M12 23  80 161 23 17 17 12  0 ... 100 32 ... 210 254 35 M12 21 203 290 26 18 18 12  0 ... 100 32 ... 210 A special feature of oil level indicators GN 650 / GN 650.1 is that the liquid level is visible even from the side. The polyamide body consists of two parts which are ultrasonically wel- ded together. The oil level indicators are individually air pressure tested for leaks at 3 bar. Oil level indicators GN 650 / GN 650.1 can also be used on tanks which are pressurised. Pressure test results regarding resistance under pres- sure are available. As reflector, a white lacquered aluminum strip is used which shows mar- king lines or temperature scale. The scale is placed behind and outside the liquid column as a protective measure. The shape of the oil level indicators offers a magnifying effect which ma- kes the scale easily legible. see also ... • List of Oil Level Indicator Types → Page 1562 • Oil Level Indicators GN 650.2 (with Protective Housing) → Page 1566 • Oil Level Indicators GN 650.4 (Narrow Type) → Page 1567 Information • Body plastic Crystal-clear Polyamide (PA-T) - - Ageing resistant - - High mechanical strength - - Temperature resistant up to 90 °C - - Solvent resistant, but not suitable for alcohol - - Avoid contact with hot water • Reflector aluminum - - White lacquered - - With two black marking lines resp. scale • GN 650 - - O-rings, rubber NBR (Perbunan ® ) - - Set screw, hexagon nut, serrated lock washer Steel, zinc plated, blue passivated • GN 650.1 - - O-rings, rubber FPM (Viton ® ) - - Set screw, Stainless steel AISI 303 - - Hexagon nut, serrated lock washer Stainless steel AISI 304 • RoHS Specification • Oil level indicators GN 650 (AR) suitable for media containing alcohol • Oil level indicators GN 650.1 (BW) suitable for hot water On request Original design HCX./HCX-SST