Standard_Parts_Catalogue

Page 1567 | 3.5 Controlling, Venting, Sealing of Liquids and Gases 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 GN 650.4 Oil Level Indicators Narrow Shape 1 l 1 2 Type How to order 1 2 GN650.4-127-A 2 Type A Without thermometer, without protective housing B With thermometer, without protective housing AK Without thermometer, without protective housing, with plastic screws BK With thermometer, without protective housing, with plastic screws AS With thermometer, with protective housing BS With thermometer, with protective housing A special feature of oil level indicators GN 650.4 is their reduced dimension. The liquid level is visible even from side positions. The polyamide body consists of two parts which are ultrasonically welded together. The oil level indicators are individually air pressure tested for leaks at 3 bar. All oil level indicators GN 650.4 can also be used on tanks which are pressurised. Pressure test results regarding resistance under pressure 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 protection frame is designed to increase the resistance of the indicator by absorbing all shocks. The protection frame is mounted to the indicator. see also ... • List of Oil Level Indicator Types → Page 1562 • Oil Level Indicators GN 650 → Page 1564 Information • Body plastic Crystal-clear Polyamide (PA 6-T) - - Ageing resistant - - High mechanical strength - - Temperature resistant up to 90 °C - - Solvent resistant, but not suitable for alcohol - - Avoid contact with hot water • Protective housing Plastic (Polyamide PA-HP) Glass fiber reinforced, black, matte finish • Reflector aluminum - - White lacquered - - With two black marking lines resp. scale • O-ring, rubber NBR (Perbunan ® ) • Set screw, hexagon nut, serrated lock washer - - Type A / B / AS / BS: Steel, zinc plated, blue passivated - - Type AK / BK: Plastic (PA) Glass fiber reinforced, black matte finish Tightening torque max. 6 Nm • RoHS Specification 1 l 1 b 1 b 2 d l 2 l 3 l 4 l 5 l 6 l 7 l 8 l 9 l 10 s ≈ Thermometer scale Type A / AS Type B / BS Type AK Type BK Max. wall thickness °C °F  76 22 27 M 10 M 12 23 40 99 18 11,5 15 17,5 105 14,5 12 20 ... 100 68 ... 210 127 22 27 M 12 M 12 23 80 150 23 11,5 15 17,5 156 14,5 10  0 ... 100 32 ... 210 254 22 27 M 12 M 12 23 203 278 23 12 15 17,5 284 15 10  0 ... 100 32 ... 210 Original design HCZ. / HCZ/-VT