Author: Sam Myers, Retrotec

When pressurizing a building with a blower door, did you know that extra tubing must be added to the Channel B side of your gauge if you are not using a Retrotec DM32? If this tubing connection is neglected, you will have a reading that is approximately 20% high due to the open Channel B port that is referencing the indoor pressure of 50Pa instead of the outdoor pressure. Therefore, the extra tube is needed to connect that port on Channel B to the outside so that it is referencing the outside instead of the pressure induced by the blower door.

However, the Retrotec DM32 automatically

This webinar from Retrotec is an introduction to the DM-32 gauge. This video focuses on:

• Ports & connections
• Updating the firmware
• DM32 interface and operation
• Calculating results
• Common errors
• Running other manufacturer’s fans
• Running other devices and hole flow

Sign up for live webinars, or view additional previous webinars from Retrotec. To talk with a sales representative about Retrotec’s digital gauge, the DM32, call 1 (855) 738-7683.

Corbett Lunsford reviews the new Retrotec DM-32 Smart Gauge, and uses it to run a blower door test in Georgia while he sits in Chicago. Featuring home performance trainer extraordinaire Joe Medosch.

Watch how easy it is to use the DM32 with TEC's Exhaust Fan Flow Meter

See how you can check your gauge's calibration against itself and another gauge. Learn a simple way to test positive and negative ports against each other.

Learn how environmental factors can affect your testing, and how to recognize them. Included are: the moving tube problem; the pinched tube problem; getting water in your tube; and, finally, wind issues. See the massive pressure changes these factors can cause.

- DM32 interface and operation
- Running a Retrotec or MN fan
- Using Virtual Gauge, GaugeRemote, and Data Logger
- Calculating results