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User's Manual

Hygro Thermo-Anemometer

Model 407412

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Summary of Contents for 407412

Page 1: ...User s Manual Hygro Thermo Anemometer Model 407412 ...

Page 2: ...her written or oral is expressed or implied Introduction Congratulations on your purchase of Extech s Hygro Thermo Anemometer This Heavy Duty meter measures and displays Air Velocity Temperature and Relative Humidity Temperature Air flow can be displayed in the following units of measure feet per minute meters per second miles per hour kilometers per hour and knots Temperature and RH units are dis...

Page 3: ...0 4 25 00 m s 0 01 m s 2 0 2 m sec km h kilometers hour 1 4 90 0 km h 0 1 km h 2 0 2 km hr mph miles hour 0 9 55 9 mph 0 1 mph 2 0 2 mph knots nautical miles hour 0 8 to 48 6 knots 0 1 knots 2 0 2 knots Temperature Range Resolution Accuracy 32 o F to 122 o F 0 o C to 50 o C 0 1 o F o C 1 5 o F 0 8 o C Relative Humidity Range Resolution Accuracy 10 to 70 RH 0 1 3 RH 70 to 95 RH 0 1 4 RH ...

Page 4: ... to freeze the currently displayed reading C F Press to select the temperature unit of measure RECORD Press to track the MAX and MIN readings RECALL Press to retrieve the current MAX and MIN memory FUNCTION Select Humidity left position or Air Velocity right position UNIT Select the unit of measure for Air Velocity 5 Battery compartment and tilt sand are located on the back of the meter 6 Rubber p...

Page 5: ...d 5 Hold the probe by the handle in the area to be monitored The meter will display Relative Humidity Temperature 6 Note that humidity measurements take several minutes to stabilize Data Hold Press the DATA HOLD button to freeze the displayed reading The DH icon will appear on the LCD while Data Hold is engaged Press the DATA HOLD button again to resume normal operation Min Max Record Mode When se...

Page 6: ...ined for several hours after the first appearance of the low battery indicator To replace the battery 1 Remove the meter s protective rubber holster 2 Open the battery compartment on the back of the meter using a small coin or a flat blade screwdriver 3 Replace the 9V battery close the compartment and replace the holster Relative Humidity and Temperature Calibration 1 Turn the meter on and select ...

Page 7: ... com Extech Instruments Corporation 285 Bear Hill Road Waltham MA 02451 Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to veri...

Page 8: ...e formulae Unit of Measure Conversion Table m s ft min knots km h MPH 1 m s 1 196 87 1 944 3 6 2 24 1 ft min 0 00508 1 0 00987 0 01829 0 01138 1 knot 0 5144 101 27 1 1 8519 1 1523 1 km h 0 2778 54 69 0 54 1 0 6222 1 MPH 0 4464 87 89 0 8679 1 6071 1 Width W Height H Area A Width W x Height H CFM ft3 min Air Velocity ft min x Area ft2 CMM m3 min Air Velocity m sec x Area m2 x 60 Radius Area A x r2 W...

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