Vacuum gauges are a critical service tool and one that all licensed technicians should have, however, they have a reputation for being too fragile.
This is due in part to the majority using a fragile silicon sensor that can be damaged following oil contact or exposure to positive pressure.
Yellow Jacket pioneered and patented the stainless steel sensor creating the most robust Vac gauge available, but it could still be damaged by positive pressures in excess of 1 bar (14.5psi)
Fast forward to AHR 2017 and Yellow jacket has released the new Omni Vacuum Gauge; the first capable of positive pressure up to 31bar ( 450psi) without damage.
The combination of the oil resistant and positive pressure capability makes it a revolution in vacuum gauge reliability.
It is built into a small ballistic plastic case with added features such as multiple units of measure, an electronic screen that can be read in direct sunlight and a settable audible alarm when the target is reached.
They are now available from all leading wholesalers or contact Sky Refrigeration on 03 9735 2313. www.skyrefrig.com