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General Tools DCFM8906 Digital Display Review

3

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Poor

Revainrating 2 out of 5  
Rating 
2.0
🔬 Substance Analysis Instrumentation, 🔍 Test, Measure & Inspect

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Description of General Tools DCFM8906 Digital Display

Single hand airflow measurement. Displays CFM, FPM, MPF, KPH, MPS. Temp range 14 to 122-Degree Fahrenheit. Air flow range: 80 to 5900. Includes 9-Volt battery and molded hard case.

Reviews

Global ratings 3
  • 5
    0
  • 4
    1
  • 3
    0
  • 2
    0
  • 1
    2

Type of review

Revainrating 1 out of 5

Poor airflow accuracy at many speeds

Overview: General tools DCFM8906Accuracy is expressed as a percent of upper range limit according to the manufacturer, not as a displayed value. So the claimed accuracy is +/- 177 fpm (5900 x 3%). As 3% of the displayed value is the minimum expected from decent lower level certified models these days, this degrades this unit at measurement speeds below about 60 mph.ft/m5900 3% (67.0 mph) accuracy 2950 6% (33 .5 mph ) 1475 9% (16.8 mph). etc. If anyone at General Tools thinks this review by…

Pros
  • Check, measure and inspect
Cons
  • Hide

Revainrating 1 out of 5

Poor airflow accuracy at many speeds

Overview: General Tools DCFM8901According to the manufacturer, accuracy is expressed as a percentage of the upper range limit, not as a displayed value. Thus, the claimed accuracy is +/- 138 fpm (6900 x 2%). Since 3% of the displayed value is the minimum expected from decent certified lower-end models these days, at reading speeds below about 60 mph.ft/m6900 Accuracy 2% (78.4 mph) 3450 4% (39, 2mph ) 1725 8% (19.6mph). etc. If anyone at General Tools thinks this review by others at General…

Pros
  • Industry and Science
Cons
  • New competitors appear

Revainrating 4 out of 5

Good enough for homeowner projects.

I bought a house and there were numerous leaks in the air ducts. Before I started repairing leaks I bought this gauge to measure the existing airflow. I also remeasured several times as I worked and measured the end results. While I did feel an obvious improvement in airflow and heat and cold distribution, it was nice to have some data to work with. While the counter definitely worked well for this project, I'll only use it occasionally now that the job is done. for this tool. If you're in a…

Pros
  • Flow meter
Cons
  • I don't remember but there was something