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© Retrotec 2017
4. Change [Settings] for gauge operating parameters
Tapping [Settings] from the Home screen will bring up a menu that lists gauge settings. There are three
“Settings” screens, each displaying a number of gauge operating parameters that can be changed.
Figure 34: [Settings] can be changed on the gauge, and are remembered when the gauge is turned back on
More specifically, the [Settings] allows a user to:
• acquire and apply bias pressure correction by tapping [Baseline] [Capture Baseline]
• enter the conditioned [Area] or [Volume] (sometimes needed by “Result to be displayed”)
• enter the number of seconds for [Time averaging]
• change the type of, and units for, the “Result to be displayed”
• tap [Network] , then tap [Status] to toggle connection types and edit network credentials
• set a [Default @ Pressure] for Result extrapolation when [Set Speed] is used
• select the inactivity time (15 min, 30 min, 1 h, 2h, Off), after which the gauge powers itself down,
[Power down time]. The gauge will not power itself down if “Off” is chosen.
• enable or disable [Sound] feedback upon key press
• set an appropriate “n” value, a slope for result extrapolation, with [Ducts=0.6, House=0.65]
• update gauge firmware by tapping [Firmware] [Update Firmware] (requires the DM32
Configurator software – refer to section 6)
• Reset touchscreen sensitivity with [Re-calibrate touchscreen]
For screen illustrations on using a function, click the hyperlinks in the above list.
4.1 Capture [Baseline] Pressure
Measure and remove bias/Baseline pressures due to wind or stack that are present before test pressures
are applied. The captured Baseline is subtracted from the pressure reading on [Channel A].
1. Tap [Capture Baseline] to begin sampling
2. Tap [End Capture] after 30 to 60 seconds. The displayed Baseline pressure is now subtracted from
all future readings on [Channel A]
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