Gauge

The PTO on a dump truck is used to open the tailgate and raise the bed of the truck, dumping its contents. Common problems dump truck operators encounter involve elevating the bed of the dump truck too high, the material not dumping out the back of the bed and the dump truck rolling. Using a PTO on a dump truck involves following procedural steps in the proper order, because if the PTO is operated out of order, you can put yourself and others at risk. Step 1 Back the dump truck to the area you want to stage your material. Put the truck in neutral and set the emergency air brake. Step 2 Flip the tailgate release switch and listen for the gate to release. If you do not hear the tailgate release, exit the cab and check the gate release hooks. If they have not released, return to the cab and flip the tailgate release switch closed, raise the rpm until the air pressure gauge indicates that the tanks are full, then re-engage the tailgate release switch. If you raise the truck's bed ...

Pressure gauge s are very common instruments in the process industry. As with any measurement device, pressure gauges need to be calibrated at regular intervals to assure they are accurate. There are many things to consider when calibrating pressure gauges. This article lists 20 things you should consider when calibrating pressure gauges. 1. Accuracy classes  :Pressure gauges are available in many different accuracy classes. Accuracy classes are specified in ASME B40.100 (accuracy classes from 0.1 to 5 % range) as well as in EN 837 (accuracy classes from 0.1 to 4 % range) standards. The accuracy class specification most often being “% of range” means that if the accuracy class is 1% and if the scale range is zero to 100 psi, the accuracy is ± 1 psi. 2. Pressure media  :When calibrating pressure gauges, the most common pressure media are gas or liquid. Gas is most often regular air, but in some applications, it can also be different gases, such as nitrogen. Most commonly, the...

Vibration is one of the most common causes of pressure gauge failure in production facilities, posing a host of threats. Just for starters, simply reading a gauge mounted to a vibrating piece of equipment can be difficult. Vibration also can move a gauge’s pointer mechanism “off zero” — making readings inaccurate. If you don’t address vibration risks in your production lines, your gauges will wear out prematurely. That, in turn, will result in an endless, expensive cycle of replacements with gauges that are apt to be just as ill-suited to high-vibration settings. In comparison to huge pieces of equipment, a gauge may seem to be a small concern. Yet, gauges are among the small details that, if not given proper attention, can leave you without information needed to address problems before they turn into larger ones. Gauges come in many different types, designs and levels of quality, so the most important consideration in selecting a gauge is matching it to its application. In fact, ins...