Reddit reviews HOLDPEAK 866B Digital Anemometer Handheld Wind Speed Meter for Measuring Wind Speed, Temperature and Wind Chill with Backlight and Max/Min
We found 5 Reddit comments about HOLDPEAK 866B Digital Anemometer Handheld Wind Speed Meter for Measuring Wind Speed, Temperature and Wind Chill with Backlight and Max/Min. Here are the top ones, ranked by their Reddit score.
Steday Wind Speed Measurement & High Accuracy: Wind Speed Range: 0.3-30m/s and Accuracy: 0.1dgtsESSENTIALS FOR BAD WEATHER:You will know the hurricane trend before going out. HOLDPEAK anemometer provides fast measurement for analysis of critical environment conditions.MULTIFUNCTIONAL ANEMOMETER YOU WILL NEED: Wind Speed, temperature and wind chill in one LCD display. Digital Anemometer Handheld measure wind speed in 5 units: m/s, km/h, ft/min, knots, mph.MORE EXTRA SPECIFICATIONS THAN OTHERS WIND SPEED METER: Through the built-in temperature regulator to adjust C/F temperature. Record and recall Max/Min/Average/Current function. Low battery indication. Screw hole in the button can be connected a lanyard.REASSURING AFTER-SALES SERVICE: We have perfect quality. If the meter what you received have any quality issues, please contact our After-sales personnel in time and we will serve you in good faith.
I have a mechanical anemometer I bought off amazon for like $25us and it works great but I use it to measure higher speed wind 5-20 knots, so not sure how well it would work at lower levels. https://www.amazon.com/gp/aw/d/B00ZHKWCP4
Sounds like you've diagnosed unbalanced airflow. First, follow the route that the air takes as it travels from the air handler out to the rooms, and between the floors. Have you ever seen a small handle that you don't know what it does? Some systems have dampers placed within the system, to adjust airflow during the seasons. If you have one or more, they may be in the wrong position, restricting to flow to upstairs.
You might want to buy one of these:
https://www.amazon.com/HoldPeak-HP-866B-Portable-Measuring-Anemometer/dp/B00ZHKWCP4/ref=sr_1_1?ie=UTF8&qid=1466132432&sr=8-1&keywords=HoldPeak+HP-866B
It will help you even out the flow between vents, so that all rooms can share equally in what your system is capable of putting out.
> Also, be aware that if you use that transmitter you have an accuracy of +/- 0.1 psi which doesn't meet your original requirements.
if you look at this chart [http://www.dwyer-inst.com/Product/Pressure/DifferentialPressure/Transmitters/SeriesDM-2000], I will be selecting model number "DM-2003-LCD". It has range of 0"-0.5" of water. With 1% FS accuracy, it will give +/-0.005" of water accuracy. It is more than enough
>can i ask for a better description of what your attempting to accomplish?
This is for my final year project. I am trying to estimate the remaining life of an airplane filter. It is a rectangular filter with dimensions of 3" by 5". I have designed a housing to sandwich the filter in between. It is airtight and it has 2" dia intlets and outlets. Pressure drop condition given to us have been measured at a set inlet flow rate. Therefore, before I attempt to measure the pressure drop, I have to make sure the flow rate is correct. I am also thinking to put an anemometer at the circular inlet ,
and calculate the velocity at the cross section just before air goes into the filter.[https://www.amazon.ca/HOLDPEAK-866B-Digital-Anemometer-Temperature/dp/B00ZHKWCP4/ref=sr_1_2?ie=UTF8&qid=1518621498&sr=8-2&keywords=anemometer] However, I don't know if doing that would yield accurate results. As you mentioned pitot tube also has its own drawback, as it measures the velocity of very small section. You would need a grid of those to get an accurate velocity measurement. Our final design needs to be something like a kit, therefore easy to assembly and operate. Putting a grid of pitot tubes is not preferable. Therefore I am considering to use an anemometer. What do you think?
Checking each of the vents airflow is step 1 of this process. Get something like this:
https://www.amazon.com/HoldPeak-HP-866B-Portable-Measuring-Anemometer/dp/B00ZHKWCP4/ref=sr_1_1?ie=UTF8&qid=1466132432&sr=8-1&keywords=HoldPeak+HP-866B
This little device tells you how hard the air pressure is coming out of the vent. Ideally, small rooms get low flow, and large rooms get higher airflow.
This should help you get adequate flow to each room.
You might look into purchasing two items. A non-contact thermometer:
https://www.amazon.com/Dr-Meter-IR-20-Non-contact-Infrared-Thermometer/dp/B00R19ANCS
And an air flow meter:
https://www.amazon.com/HOLDPEAK-866B-Digital-Anemometer-Temperature/dp/B00ZHKWCP4
This way you can quickly see how much air is coming out of each vent, and how cold it is. This will allow you to balance out the system, helping to insure even airflow into all the rooms.