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No hay artículos en el carroDwyer Mark II series molded manometers are of the inclined and inclined-vertical types. The curved inclined-vertical tube of the Model 25 gage provides higher ranges with more easily read increments at low readings. The Model 25 is excellent for Spray Booth and Filter Indicating work. Included with each Mark II manometer are two tubing connectors for 1/8" pipe or sheet metal ducts, two mounting screws, 3/4 ounce bottle of red indicating fluid, red and green pointer flags, and complete instructions. The Model 25 also includes 8 feet of flexible double column plastic tubing.
Chris B.
Comentado en los Estados Unidos el 29 de abril de 2023
Just took a course in industrial ventilation from ACGIH and decided to buy this manometer to hook up to my home HVAC system. Took about 20 minutes to install and it working great. I checked the system static pressure across the filter and as you can see it’s just about time for a filter change. My system’s max static pressure rating across the fan is 0.5” wg. The picture shows that I’m at about 0.4” wg with a four month old MERV 12 filter. I put a new MERV 11 filter in my unit and the pressure dropped to 0.2”wg. You can also take velocity and total pressure measurements as well if you have a pitot tube. We will see how the unit holds up. It pretty sturdy so I don’t anticipate having any issues.
Kevin B.
Comentado en Canadá el 26 de febrero de 2021
I use this product to test Total External Static Pressure (TESP) on furnaces. It's also utilized to balance Heat Recovery Ventilation (HRV). The only suggestion would be adding magnets.
Altecom
Comentado en México el 3 de enero de 2018
Buen aparato , lo hemos usado durante muchos años , aunque con la llegada de los menos complicados manómetros digitales , estoa aparatos no se usan mucho , excepto cuando se acompañan de un tubo pitot.
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Comentado en Canadá el 7 de marzo de 2017
Arrived and works as described
GIM 64
Comentado en Canadá el 25 de marzo de 2017
I have used Dwyer products for many years and have always been satisfied with their accuracy and quality. I'm using this manometer to monitor the air pressure drop over my premium in-line electronic air filter. The manufacturer of the air filter says it could go for up to nine months before servicing, but I never expected that kind of performance. The Dwyer manometer proves that my filter, in my application, must be serviced within 40 days or the system airflow becomes too restricted leading to excessive energy consumption. I'd rather clean the filter more often than pay extra for fuel and electricity. Looks great too! Comes with mounting screws, red indicating fluid, and tubing. You'll need to buy a pair of magnetic static tips to insert into your ductwork.
Jeffrey F Brady
Comentado en los Estados Unidos el 17 de enero de 2017
I am using this Manometer to allow for a visual identification of when my whole house furnace filter needs to be changed. As the filters are between $30 and $40 I do not want to change too often as I will be wasting money and if I wait too long potentially damaging my HVAC system which is less than ideal..... My current scheme is to pull the filter out and look at the color of the filter which is inaccurate to say the least, so after a recent cold snap and my furnace not operating due to a filter that needed to be changed I opted to do something about it. Competitive products seemed a little cheap to me so I went this route. As a mechanical engineer by training I was very pleased with the lab instrument quality of this Manometer, when you open yours up you will be surprised by the size of the this unit, fully 6"x6" or more. Everything that I needed to accurately measure a pressure differential was included as well as a surprise built in level for that really assisted with the installation of the product.What is extremely important about this Manometer is that the first inch of the water column is essentially more "horizontal" allowing for more accuracy in the first inch of the water column. The reason for this is that your furnace is most likely designed for about 0.5" of static external pressure. This is typically found on the HVAC systems label.So in my case when I installed the Manometer and zeroed it out with no filter in place, then added a new clean filter it measured .1" rise in the water column. That is about 20% of the total rise allowed by my HVAC units spec. (By the way that was a dead on match to the Filtrete specs for this filter, which is always nice) So I will need to change that filter when the water column reads .5" of water. Having that first inch essentially expanded out is really nice so I can see what is going on visually.Long story short, if this keeps my wife happy because her house is warm as her furnace filter was changed when it should have been then all things considered this was a great purchase. :-)Have a great day and some fun as a home geek. Jeff
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