DM2 Product Specifications
Pressure Channels:
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2 independent pressure channels (A & B) |
Pressure Range:
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-1250 Pa to +1250 Pa (-5 to +5 inches H2O) |
| Resolution: |
0.01 Pa (0.0001 inches H2O, 0.001 lb/ft2) |
| Accuracy: |
1% of pressure reading or 0.15 Pa (whichever is greater) |
| Weight: |
14 oz (397 g) |
| Dimensions: |
: 8.75" × 4.25" × 3" ( 22.2 × 10.8 × 7.6 cm) |
LCD Display:
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2.4" × 1.4" (6 × 3.6 cm) |
Operating Temp:
|
32 to 130oF (0 to 53oC) |
| Power: |
A/C or (4) AA Batteries. 4 NiMH rechargeable batteries and charger included. Integrated on board charging circuit also included. |
Calibration Meets:
|
Canadian CGSB-149.1-2002 & SuperE, USA ASTM E 779 - 03, European EN 13829 & CEN, UK TM-23 Energy Standards, Rain Penetration Standards. NFPA 2001- 01, ISO 14520 and UBC-905 fire standards. |
Supported Units of Measurement
Channel A:
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- Pressure in Pascals, inches H2O, lb/ft2
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| Channel B: |
- Pressure in Pascals, inches H2O, lb/ft2
- Flow in cfm, l/s, m3/s, m3/h
- Flow @ (any pressure) calculates flow at ANY desired pressure configured in Setup menu
- Leakage Area - EqLA (Canadian) and/or EfLA (US) in cm2, in2, ft2
- Leakage Area @ (any pressure) calculates ELA at ANY desired pressure
- Air-changes per hour according to volume entered on keypad
- Velocity in m/s, km/h, ft/s, ft/min, mph
- Velocity-Flow in cfm, l/s, m3/s, m3/h according to cross-sectional area entered on keypad
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DM-2 Functionality
| Range/Config: |
Cycles through flow ranges of the blower door or duct tester being used. |
| Setup: |
Permits changing default units, displayed outputs, devices and reference pressures |
| Baseline: |
Measures and removes background pressures on Channel A for subsequent testing. |
| Time Avg: |
Advanced box-car averaging displays continuous updates of the average pressure. No more waiting for your next average pressure measurement! Dramatically reduces the affect of wind and other pressure fluctuations. |
| Auto Zero: |
On start up and every 8 seconds on both channels. May be turned off. |
| Device: |
Selects the flow characteristics of virtually any blower door, Duc-tester or a pilot tube.
@: Turns on/off extrapolation to configured pressures |
| Volume/Area: |
Enter volume and/or area values to calculate air-change and flow/unit area results. |
DM-2A Extended Functionality
| Set Speed: |
Allows direct control of Fan speed from the DM-2 - no need to handheld speed control. |
| Set Pressure: |
Permits "set and forget" control of your fan. Dial in "Set 50Pa" and the fan will ramp up and hold 50Pa giving on the fly flow, ACH or leakage measurements. As you identify and seal leaks, the fan will automatically adjust itself for the tighter enclosure. |
The USB Uplink allows the DM-2 Series Gauge to be connected to a computer for Data Acquisition, Automatic Control or remote data monitoring.
Product ID
DM211 - DM-2 Digital Gauge Set with Automatic Control (included with all Q series door fan systems.)