If you have a Power Unit application, your NOSHOK Regional Sales Manager or the NOSHOK Customer Support Team is ready to provide a custom Measurement Solution in the design stage, which can reduce your manufacturing cost and improve the unit’s performance.

Hydraulic Power Units are essentially the heart of a hydraulic system. Consisting of a motor, a reservoir and a hydraulic pump, these units can generate a huge amount of power to drive almost any kind of hydraulic force. These units are used in a wide range of applications that require heavy and continuous lifting or other requirements for the repeated use of powerful and directional force, including Machine Tools, Automation, Mobile Equipment, Oil & Gas, Marine and much more.

Hydraulic Power Units require a variety of pressure and temperature measurement instrumentation, as well as valves to keep them running smoothly and efficiently. NOSHOK offers a variety of Measurement Solutions that are ideal for this application.

The pressure a power unit can deliver at the outlet is known as the operating pressure. The power unit may be indicated as a single pressure rating, or it can be rated to operate over a range of pressure. This pressure can be measured mechanically using pressure gauges both at the pipe and at a panel, or for more automated units it can be measured electronically using pressure transmitters and transducers.

The cooling method can be none, or via heat exchanger or fan-driven oil cooler. Therefore, temperature must also be measured and regulated. This can be achieved by using bimetal thermometers and/or vapor actuated thermometers, or temperature transmitters such as the cost-effective 810 Series Compact OEM Temperature Transmitter, 800 Series Platinum Resistance Temperature Transmitter, and the 850 Series Electronic Indicating Temperature Transmitter/Switch.

All hydraulic power units incorporate some type of integrated pump. Some units come equipped with multi-stage pumps, which operate like multiple pumps connected in series. Hydraulic power unit pump types include single stage, double stage, three or more pump stages, and multiple pump units. Pressure switches are often employed for functions including pump turn on and shut off.

Valves can be used to control direction, pressure and amount of fluid flow through the power unit, including block and bleed valves, multi-port valves and mini needle valves.