Friday, April 21, 2017

Vibration Dampening Improves Pressure Gauge Reading



Bourdon tube pressure gauges can exhibit rapidly oscillating indicators when subjected to pulsations from the measured line. The fast moving pointer on the dial face makes it impossible for an observer to obtain an accurate reading from the gauge. One solution has been to fill the case with a viscous liquid that served to dampen the vibration. While this is generally effective, it does create an additional potential maintenance burden related to the liquid.

A better solution is a dry gauge with a suitable means of dampening pointer oscillations that rivals that of liquid filled gauges. Winters Instrument, a manufacturer of industrial instrumentation on a global scale, offers a range of pressure gauges with their StabilZR™ dampened movement that provides liquid filled performance in a dry gauge.

The short video included with this post compares a standard dry gauge, liquid filled, and StabilZR™ versions. You can see the performance difference. Learn more about the StabilZR™ pressure gauges by sharing your process instrumentation challenges with application experts, combining your own process knowledge and experience with their product application expertise to develop effective solutions.


Tuesday, April 11, 2017

High Visibility Process Gauges Deliver Improved Readability in Low Light Conditions



Process gauges can sometimes, by necessity, be located in areas with low lighting or other conditions that do not promote easy viewing and reading of their dial face. Winters Instruments, manufacturer of a range of industrial instrumentation including dial face gauges, has released their WinBRIGHT high visibility pressure gauge dials. The new gauge dials provide either a highly reflective background color or glow in the dark option for the company's offering of pressure gauges in the 4" through 6" diameter range.

The video provides a quick overview of the new offering. Considering these gauges for installation in existing or new processes can bring better visibility to operators and technicians reading process gauges. More information is available from instrumentation specialists, with whom you should share your process measurement challenges and requirements. Combining your own experience and process knowledge with their product application expertise will yield a positive solution.

Wednesday, April 5, 2017

Closed Loop Cooling - Alternative Setup Delivers Benefits

Industrial processing often requires the transfer of heat, sometimes into the process, sometimes out of the process. External heat sources are often steam, hot water, or electric heaters. There are also instances where processing machinery either adds heat to the process or requires heat removal (cooling) in order to maintain proper function. If the heat source can accommodate a flowing liquid to provide removal of excess heat, it is a candidate for a closed loop cooling system.

One schematic for a closed loop cooling circuit would show the heat source connected to the piping system, with a pump for circulation and a finned coil located outdoors. The pump moves the heat transfer liquid through the hot area where heat moves from the process to the flowing liquid. The heated liquid continues to flow through the piping system to the finned coil, located outdoors. A fan moves air across the coil to provide heat transfer. The finned coil size would need to be comparatively large, since only sensible cooling using the forced air is employed. The fan capacity would be commensurate with the coil size and the circulating pump rating would be in line with the fluid moving requirements of the system. While this design is fairly simple, there may be a more efficient way to accomplish the heat transfer and deliver what may be beneficial additional features.

Consider a different schematic for the same application. This alternate design employs a closed loop cooling circuit for the heat source, but utilizes a different means of rejecting the heat from the closed loop to the outside air. A plate and frame heat exchanger transfers heat from the closed cooling loop to an open loop circuit that circulates through a cooling tower located outdoors. This scenario maintains the closed loop nature of the equipment cooling circuit, preventing entry of particulates or dissolved gases into the cooling fluid circulating through the process or machinery. Here is what the schematic looks like, courtesy of Delta Cooling Towers .
closed loop cooling system schematic with cooling tower
Closed loop cooling of process heat source using plat and frame heat exchanger and induced draft cooling tower
Courtesy Delta Cooling Towers
The cooling tower offers far greater efficiency than the fan and coil arrangement in the first design. Employing a plastic cooling tower will drastically reduce the life cycle cost over a galvanized steel model and the cooling tower will occupy significantly less space and require less costly support structure than the larger fan and coil arrangement. Total horsepower requirements for the system are reduced. The closed loop will not require any chemical additions for freeze protection because it no longer extends outdoors. This system also provides an element of flexibility, with expansion of the plate and frame heat exchanger a possibility. Cooling tower capacity is also expandable and available for other uses throughout the facility.

There are more details provided in the datasheet included below. Share your heat transfer and cooling challenges with application experts and explore various options. The combination of your process knowledge and experience with their product application expertise will produce an effective solution.


Tuesday, March 21, 2017

Forged Steel Valves for the Toughest Applications

cutaway view forged steel gate valve with handle and weld socket connections
Forged Steel Gate Valve
Cutaway View
Courtesy Crane ChemPharma Energy
Forging steel produces material of greater overall strength and toughness for parts and assemblies subjected to higher levels of stress. Forging is basically accomplished by applying localized mechanical pressure across the base steel, eliminating internal voids and gas pockets, while producing a unique oriented grain structure in the metal that delivers increased fatigue resistance.

Higher pressure or temperature applications in fluid process control can benefit from, and sometimes may require, the use of forged steel valves. Their ruggedness and ability to hold up under tough conditions make forged steel valves a good choice for many uses throughout general industrial, oil and gas, and power generation installations.

Forged steel valves are available in a broad range of sizes, connection types, and port configurations. Crane, world class manufacturer of industrial valves, offers forged steel gate, globe, and check valves to provide options for flow direction, stop, and throttle control.

There are almost countless variants and configurations of industrial valves from which to choose. Share your fluid control requirements and challenges with an industrial valve expert, combining your own process knowledge and experience with their product application expertise to develop effective solutions.


Friday, March 17, 2017

Ergonomic Electro-Pneumatic Valve Positioner

Spirax Sarco, global leader in steam system control products, has released a new valve positioner that ranks high on the user friendly scale. The EP500 is an electro-pneumatic positioner that features a cast aluminum enclosure and a host of features that facilitate a rapid and simple setup or calibration procedure.

See how easily setup is accomplished, and get a close look at the new valve positioner, in the video provided below. Reach out to a steam system and valve specialist for more information, and share your control valve and steam system challenges. The combination of your own process knowledge and experience will combine with the expertise of a product application specialist to develop effective solutions.

Thursday, March 9, 2017

Metal Seated Ball Valves Offer Potential for Long Term Cost Savings

3 piece ball valve with handle
Adding metal seats to a ball valve can extend its service life
Photo courtesy of Flo Tite
The majority of ball valves are provided with one of several elastomeric materials forming a soft seat between the trim, or ball, and the valve body. With the balance of the valve assembly in contact with the media likely to be metal (unless, of  course, it is a plastic valve), the soft seat, because of its properties and location, tends to experience wear and tear and be a common cause for repair or valve performance deterioration.

In fluid process control applications where the media conditions may not, at first glance, warrant the use of a metal seated valve, there may be long term returns to be gained from the added cost of metal seats. The factors that create wear and degradation of soft seats are generally better tolerated by metal seats. Process downtime or man-hours for repair have a cost, so avoiding or reducing the occurrences of repair or maintenance provide a return on the additional expenditure for a metal seated valve that can provide a longer service life.

Many commonly available ball valves are also available with metal seats as an option, or metal seated variants are offered as uniquely identified products. Whatever the case, consider hardening your valve selections with metal seated valves. There are instances where they are well suited to the application and will offer a return on the additional cost.

Share your fluid process control challenges with a valve specialist, combining your own process knowledge with their product application expertise to develop effective solutions.



Thursday, March 2, 2017

New Electric Linear Actuators for Industrial Valves

electric linear valve actuators
Electric linear actuators for industrial valves
ILEA Series
Courtesy Warren Controls
There are uncountable choices for industrial process control valves and actuators. With applications so diverse and requirements so specific, each product seems to enjoy a placement within a particular niche or range of usage where it provides the perfect combination of construction, performance, and cost attributes.

Warren Controls, manufacturer of a wide range of industrial control valves and actuators that include both linear and rotary designs, has released an electrically powered linear actuator that provides some application advantages.

The ILEA series of industrial linear electric actuators provides failsafe features, fast operation, robust environmental performance, and extended output force ranges. This all is delivered at a cost point making the ILEA series a contender for any modulating valve service application.

The datasheet included below provides additional detail. Share your fluid process control valve challenges with valve application experts, combining your own process knowledge with their product application expertise to develop effective solutions.