| 摘要 |
FIELD: hydraulic and pneumatic systems. SUBSTANCE: known indicators with body in the form of pipe union containing spring-loaded plunger, and threaded cap on body requires direct visual attention for checking air pressure in system. Novel indicator permits repeated use, remote signalling, adjustment of pressure level that is sensitivity. Indicator has sealed body with resilient bellows 6, sleeve with flange 4 made of electric current conducting material. Seated in cap 7 at clearance with respect to flange 4 of sleeve 3 is plug 8 of dielectric material with central hole 12 in which axially installed is adjusting screw 10 with position lock 11. Spring 13 rests against sleeve bottom 5 and is directed towards bottom 5. End face of adjusting screw 10 and sensing member are made as two electrical contacts 14 located on end face of plug 8 for interaction with flange 4 of sleeve and connected with external electrical signalling system. EFFECT: high efficiency. 1 cl, 1 dwg |
