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Feature
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Specifications
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Sensors:
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2 independent differential pressure transducers with auto-zeroing
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Pressure Resolution:
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Display resolution is 1 Pa from -7.5 kPa to +7.5 kPa
or 0.01 "wc from -30.00 "wc to +30.00 "wc.
Internal resolution is 1/4 Pa or 0.001 "wc
and this is the resolution of the serial output.
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Pressure Range:
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Bi-directional: ±30.00 "wc and ±7.500 kPa.
For lower pressures, see the Infiltec
DM4
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Auto-Zeroing:
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Each pressure sensor is connected
to a pneumatic switch system that
measures and adjusts the zero pressure
every 10 seconds. Drifts due to
temperature and orientation change are
removed by this auto-zeroing. Accuracy
is specified as a % of measurement rather
than as a % full scale due to auto-zero.
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Keys:
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7 mode selection keys.
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- Device Key:
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Select: Manometer or Pitot tube modes.
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- Units Key:
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Dual Manometer: Metric (Pa, Pa), U.S. ("wc, "wc), Mixed ("wc, Pa)
Pitot flow: Metric (Pa, m/s), U.S. ("wc, fpm), Mixed (Pa, fpm)
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- Time Avg Key:
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Select block average of 1 (default), 2, 4, 8, 16, 32 or 64 seconds.
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- Low Flow Key:
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Dual Manometer: no function
Pitot flow: no function
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- Baseline Key:
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Resets zero pressure.
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- Hold Key:
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Holds reading on display until pressed again.
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- On/Off Key:
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Turn power on and off.
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Accuracy:
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Dual Pressure: ±1% of display measurement or ±1 digit, whichever is greater.
Pitot Flow: ±1.5% of measurement or better from 2540-21000 fpm (12.9-110 m/s)
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Display Type:
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2x16 high contrast LCD with numbers and characters.
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Operating Temperature:
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32°F to 122°F. (0°C to 50°C)
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Storage Temperature:
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-4°F to 160°F. (-20°C to 70°C)
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Maximum Pressure:
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±250 "wc, ±60 kPa or ±9 PSI
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Low Battery Display:
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Current battery voltage is displayed at startup,
"lowbat" displayed when voltage is under 7 volts.
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Over Range Indicator:
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!!MAX!! displayed when pressure is beyond ±30 "wc or ±7.5 kPa.
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Auto Zero:
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Pneumatic switches update zero pressure estimates every 8 seconds.
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Weight With Battery:
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~16 oz. (~455 grams)
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Dimensions:
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4.0"x7.5"x1.79" (101.6x190.5x45.4 mm).
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Battery Life:
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Over 100 hours from six AA alkaline batteries.
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Operating Medium:
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Air or non-corrosive, non-explosive gas.
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Pressure Connections:
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Two pairs, barbed for 1/8" ID tubing.
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Serial Output:
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9600-8N0 pseudo RS232 ASCII records at 1 Hz with LF+CR termination
±32767 range, 1/4 Pa resolution, comma separates two channel values
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Microprocessor:
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Programmable 4 Mhz Microchip PIC14000 with 16 bit a/d.
DM5 functions can be updated by replacing this chip.
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Custom Firmware:
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Custom microprocessor programming is available to optimize
the DM5 for your pressure/flow/ELA measurement application.
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Optional Accessories:
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Pitot tube, serial cable, 110VAC power adaptor.
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Accessories Included:
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Battery, soft carrying case, tubing, calibration certificate, user manual.
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Warranty:
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2 years coverage on parts and labor to repair any defects.
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