Pulse Width Modulation (PWM) Enables Flow Rate Control Without Changing Spray Pressure

Benefits

• Flexibility: Achieve a wide range of flow rates with a single nozzle
• Immediate flow adjustments: Using AutoJet spray controllers, response time of electrically-actuated PulsaJet spray nozzles is almost instantaneous
• Reduced clogging: Maintain low flows even with large spray orifices for improved reliability and reduced maintenance
• Reduced misting: Low flow operation using larger orifices at low pressures reduces the misting common at higher pressures and improves transfer efficiency and safety
• Uniform coating/improved quality: Constant pressure operation prevents variations in spray angle and drop size for more even coating over a wide range of flow rates

PWM Food Processing

Examples of PWM Flow Control Applications in Food Processing:

• Spraying flavors or oils onto bread, pastries and rice cakes
• Surface coloring with egg coating, milk protein, or caramel
• Moistening dough with water to maintain proper consistency
• Misting bread with water to improve seed adhesion
• Spraying food ingredients onto products or into trays
• Spraying water on hamburger patties, vegetables and pizza prior to freezing to maintain proper weight
• Spraying antimicrobial agents onto meat & poultry for food safety
• Spraying sunflower oil on peanuts
• Spraying aroma onto coffee and other food products

What You Need for PWM Flow Control

A fast spray nozzle
Electrically-actuated PulsaJet nozzles achieve speeds up to 10,000 cycles per minute and are ideal for PWM flow control. PulsaJet nozzles also offer accurate spray placement, excellent spray pattern integrity and a choice of hydraulic or air atomizing spray tips.

A spray controller–plus software
AutoJet Technologies offers a wide range of spray control options for manual or automated PWM flow control
regulation. Basic versions offer PulsaJet nozzle control with manual flow adjustment and advanced versions
provide total automation, optional spray detection/verification and more.

Spray knowledge
Effective PWM flow control requires a strong knowledge of how liquids flow and how spray nozzles work. Turning a spray nozzle on and off very quickly is not enough.

Spraying Systems Co. is the global leader in spray technology. Spray nozzles, turnkey spray systems, custom fabrication and research/testing services comprise the company’s offering. Spraying Systems Co. has ten manufacturing centers and more than 90 sales offices around the world. More information is available at www.spray.co.za or by contacting the company directly on +27 11 6183860 or grant@monitorspray.co.za

Monitor Engineering based in Johannesburg, sole importers of Spraying Systems Co’s range of spray nozzles, spray controllers and custom spray systems has opened an office in Durban  and will no longer  soley be working through agents in the KZN region. Due to the changing nature of the company’s extensive product range from supplying just spray nozzles to sophisticated precision spraying equipment, the company feels that expert application assistance and product knowledge is required to assist customers in this region – specifically with the Autojet and Spray Analysis range of products. Autojet Technologies is the turnkey systems division of Spraying Systems Co. and supplies a  range of patented spray controllers and top quality spray products, high speed automatic spray guns ,spray lances and manifolds that are engineered for precision spraying ,saving chemicals and water , minimizing manual labour and improving product quality.

Our Spray Analysis division operates the industry’s most sophisticated spray research laboratory. We have the ability to conduct Computational Fluid Dynamics(CFD) ,proof of concept tests, quality control tests, and design prototypes for new product development.

Monitor Engineering has represented Spraying Systems Co. in Southern Africa for over 45 years, supplying spray solutions to industries like food and beverage, pharmaceutical, automotive, chemical, petro-chemical, refinery ,paper, steel, mining and general manufacturing. Our product range includes standard spray nozzles, tank wash and air nozzles, air knife blower packages, lubrication systems, heated systems for spraying viscous liquids like chocolate, custom made spray injectors and Quills for Refinery applications and shower nozzles and headers for the Pulp & Paper industry and a variety of other standard spray products. Our tank wash range of products has expanded so rapidly over that last 6 months that we felt the need to have a dedicated website just for the tankwash market, www.tank-cleaning.co.za

Spraying Systems Co. is the global leader in spray technology. It has the broadest product range in the industry, ten manufacturing facilities and sales offices in more than 85 countries. Spray nozzles, turnkey spray systems, custom fabrication and research/testing services comprise the 70-year-old company’s offerings.

For more information visit www.spray.co.za or contact us on grant@monitorspray.co.za