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Summary of Contents for TEC EXHAUST FAN FLOW METER
- Page 1 EXHAUST FAN FLOW METER OVERVIEW AND MANUAL...
- Page 2 THE ENERGY CONSERVATORY WARRANTY EXPRESS LIMITED WARRANTY Seller warrants that this product, under normal use and service as described in the operator’s manual, shall be free from defects in workmanship and material for a period of 24 months, or such shorter length of time as may be specified in the operator’s manual, from the date of shipment to the Customer.
- Page 3 Snap pin Short handle Overview The Energy Conservatory’s (TEC) Exhaust Fan Flow Meter is designed to make quick and accurate measurements of air flow through residential exhaust fans. The effective air flow measurement range for the Exhaust Fan Flow Meter is 10 to 124 cubic feet per minute (CFM). The device should be used with a TEC pressure and flow gauge, such as the DG-1000.
- Page 4 Overview continued The pressure reading taken from the Exhaust Fan Flow Meter is easily converted to air flow in CFM using a flow table attached to the side of the metering box. The DG-1000 and DG-700 digital pressure and flow gauges can also be set up to display air flow readings directly in CFM.
- Page 5 Conducting the test 1. DG-1000: Turn on the DG-1000 gauge by pressing and holding the power button until the green light comes on. DG-700: Power on the gauge by pressing the On/Off button. DG-1000 power button 2. DG-1000: After the Home screen loads, touch Gauge to open the Gauge app. 3.
- Page 6 Door position 2. With the exhaust fan turned on, place the Exhaust Fan Flow Meter completely over the fan grill so that the flexible gasket on the end of the metering box creates an air tight seal around the grill. Hold the gauge steady for at least 10 seconds so that the gauge auto-zeros.
- Page 7 1. Channel A pressure less than 1.0 pascal • If the Channel A pressure is below 1.0 Pa, first check the door position. If the door position is set to E1 or E2, adjust the position to create a smaller opening in the metering box (e.g. E2 or E3). If the door position is set to E3 (the smallest opening) and the metering box pressure is still below 1.0 Pa, then the fan flow you are trying to measure is outside the low range of the instrument (i.e.
- Page 8 Flow Conversion Table Meter Pressure (PA) Flow (CFM)
- Page 9 Calibration and Measurement Accuracy CALIBRATION FORMULA Door Opening Formula Flow (CFM) = 43.73 x (Metering box pressure in pascals) Flow (CFM) = 20.72 x (Metering box pressure in pascals) Flow (CFM) = 10.07 x (Metering box pressure in pascals) FLOW ACCURACY ±10% of reading when used with a 1% accurate pressure gauge (such as a DG-700) with a display resolution of 0.1 Pa (0.0004 inches of water) FLOW RANGE...
- Page 10 The drivers are available through Windows Update, and the DG-500 and DG-700 drivers can be downloaded from TEC at software.energyconservatory.com. TEC also offers mobile apps for Apple and Android devices that can be found in the Apple App Store or the Google Play Store.
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