What's New / Testing, Monitoring, Tools

Fieldpiece Instruments Inc.: Draft Simulator

Draft SimulatorModel DDSM1 draft simulator allows HVAC professionals to accurately test pressure switches and calibrate adjustable pressure switches to any furnace. This allows technicians to carry adjustable switches on their trucks, instead of switches for a variety of furnaces, said the company. Designed to simulate the negative pressure created by the draft inducer at start-up, when used with a manometer, the DDSM1 produces a consistent vacuum pressure that is adjustable to the furnace pressure, and it will maintain that pressure from 0-100 inches of column water, depending on the bleed port. To use the DDSM1, with the furnace turned off, it can be simply connected via the supplied leads and hoses to the pressure switch and a manometer, turn on the draft simulator, and slowly adjust the pressure dial. The red LED indicates when the pressure switch closes. The tech checks the reading on the manometer to see what pressures open and close the switch. According to the company, the amount of pressure to open and close the switch should be within 10 percent of the manufacturer’s rating. In addition to furnaces, the DDSM1 can accurately test pressure switches in boilers, water heaters, filter systems, clean rooms, draft hoods, air balance, and zoning. The DDSM1 can also be used to test signal transducers on furnace boards. The draft simulator features long battery life, sturdy controls, a tilt stand, and a rugged reinforced shell for extra grip and protection from drops.

Fieldpiece Instruments Inc.

eProduct 181

Did you enjoy this article? Click here to subscribe to The NEWS Magazine

You must login or register in order to post a comment.



Image Galleries

2015 ACCA Conference

Images from the 2015 ACCA Conference in Grapevine, Texas. Posted on April 8, 2015.


NEWSMakers: Clint Schreck

Clint Schreck, general manager, Columbus Worthington Air, Columbus, Ohio, discusses winning Angie’s List Super Service Award, how to handle online reviews, and much more.

More Podcasts


NEWS 05-25-15 cover

2015 May 25

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

Legislation and Regulation

What legislative/regulatory issue is most important to you as a HVAC business owner?
View Results Poll Archive


2015 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

More Products

Clear Seas Research


Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.


Magazine image
Register today for complete access to ACHRNews.com. Get full access to the latest features, Extra Edition, and more.


facebook icontwitter iconyoutube iconLinkedIn i con