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Summary of Contents for Besantek BST-AFM05
- Page 1 BESANTEK User's Manual CFM/CMM Thermo Anemometer + lnfraRed Thermometer Model : BST-AFMOS 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com...
- Page 2 Introduction BESANTEK BST-AFM06 CFM/CMM Thermo Anemometer with InfraRed Thermometer measures Air Velocity, Air Flow (volume), Air Temperature (with probe) and Surface Temperature (with the InfraRed function). The large, easy-to-read backlit LCD includes primary and secondary displays plus numerous status indicators.
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Page 3: Specifications
BESANTEK • In case the device is going to be unused for an extended period of time, remove the batteries to prevent them from draining • Expired or damaged batteries can cause cauterization on contact with the skin. Always, therefore, use suitable hand gloves in such cases •... - Page 4 Custom LSI microprocessor circuit Dual function 0.5" (13 mm) 4-digit LCD Circuit 1 reading per second approx. Display Air velocity/flow sensor: Conventional Sampling rate angled vane arms with low-friction ball Sensors bearing. Temperature sensors: NTC-type precision thermistor and InfraRed 6 to 14µm 0.95 fixed IR Spectral response IR Emissivity...
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Page 5: Meter Description
BESANTEK Meter Description • Power ON/OFF button Probe input jack Laser pointer IR Sensor Rubber holster • LCD Display IR thermometer measurement :--'\:�����tfl - -1 button Airflow buttons (4) Air Temperature function buttons (2) Vane Airflow Average button Backlight button... - Page 6 BESANTEK ◄ (LEFT) also serves as change decimal point button in AREA mode UNITS Press to select the mode of operation. In FLOW mode, the meter displays air volume. In VELOCITY mode, the meter displays air speed. • (UP) also serves as increase number button in AREA mode.
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Page 7: Display Layout
BESANTEK Display Layout E� -1888� �/8881 IR TEMP � MAX Mtl AVG HOLD • (top of LCD): Max Hold function engaged for the Air Temperature function • HOLD (top of LCD): Data Hold function engaged for the Air Temperature function •... -
Page 8: Operation
BESANTEK Temperature units of measure °F: • • airflow units of measure CFM/CMM: • Ft2, : units for area dimensions • air velocity units of measure mis, ft/min, km/h, MPH, knots: • multipliers for air flow readings X10, X100: •... -
Page 9: Air Flow
BESANTEK Air Velocity Measurements 1. Tum on the meter using the Side view of Vane ON/OFF button. Press UNITS button to select the desired unit of measure. NOTE: Arrow At power up the meter will display the last unit of measure previously entered. - Page 10 4. Repeat steps 2 - 3 until all desired points have been measured. 5. Press the AREA button to clear the multipoint averaging memory. 6. To return to standard velocity measuring mode press and hold AVG button until meter beeps twice. Note: In AVG mode, press and hold the AVG button until the meter beeps twice to return to normal operation.
- Page 11 BESANTEK Air Flow Measurements (CMM CFM) 1. Tum on the meter using the ON/OFF button Side view of Vane 2. Press the button to select UNITS the desired air flow units: CMM (cubic meters per minute) or Arrow CFM (cubic feet per minute).
- Page 12 2. Push the AREA button to scroll thru and select the desired location. Once you have selected the desired memory location enter your dimension Use the ▲ (UP) button to change the flashing digit Use the ◄ (LEFT) button to move the decimal Use ►...
- Page 13 Data Hold (Air Velocity/Air Flow) 1. While taking measurements, press the HOLD button to freeze the air velocity/air flow reading for later viewing. 2. The HOLD indicator will appear in the bottom of the LCD display. 3. Press HOLD again to return to normal operation. MAX/MIN/AVG Record (Air Velocity/Air Flow) This allows the user to record and view the highest (MAX), lowest (MIN) and average (AVG) readings.
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Page 14: Temperature Units
Temperature Units 1. Remove the meter’s rubber protective jacket and select the desired temperature units using the °F/°C slide switch located in the battery compartment. 2. Replace the protective jacket and connect the sensor to the sensor input jack on top of the meter. Data Hold (Air Temperature) 1. - Page 15 BESANTEK Automatic Power OFF To conserve battery life, the meter automatically turns off after 20 minutes. To override this feature: 1. Tum the meter OFF. 2. Press and hold the{) (Backlight) key while turning the meter ON. 3. "dis APO" will appear in the display. The AUTO POWER OFF feature will now be disabled.
- Page 16 BESANTEK 6. Note that the vane (Air Temperature) continues to monitor temperature during IR tests and its temperature is displayed on the top of the LCD (smaller digits). 7. After approximately 3 seconds the meter defaults to the Air Flow and Air Temperature display.
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Page 17: Battery Replacement
BESANTEK Battery Replacement When � appears on the LCD, the 9V battery must be replaced. Disconnect the vane. Remove the meter's rubber protective jacket 3. Use a flat blade screwdriver or a coin to open the rear battery compartment 4. Replace the 9V battery 5. - Page 18 BESANTEK Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle lnfraRed Measurement Considerations • When taking IR measurements the meter automatically compensates for ambient temperature changes. Note that it...
- Page 19 BESANTEK IR Theory IR thermometers measure the surface temperature of an object. The meter's optics sense emitted, reflected, & transmitted energy that is collected and focused onto the meter's detector. The meter's circuitry translates this information into an LCD reading.
- Page 20 BESANTEK Emissivity Most organic materials and painted or oxidized surfaces have an emissivity of 0.95. Inaccurate readings will result when measuring shiny or polished surfaces. To compensate, cover the surface under test with masking tape or flat black paint. Allow time for the tape to reach the same temperature as the material underneath then measure the temperature of the tape or the painted surface.
- Page 21 BESANTEK Cloth (black) 0.98 Human skin 0.98 Leather 0.75 to 0.80 Charcoal (powder) 0.96 Lacquer 0.80 to 0.95 Lacquer (matt) 0.97 Rubber (black) 0.94 Plastic 0.85 to 0.95 Timber 0.90 Paper 0.70 to 0.94 Chromium oxides 0.81 Copper Oxides 0.78 Iron Oxides 0.78 to 0.82...
- Page 22 BESANTEK Useful Equations and Conversions Area equation for rectangular or square ducts (A} = Width (W) Height (M} Al'H Height (H) Width (W) Area equation for circular ducts (A) : @ x Al'eG Where @: 3.14 and r 2 = radius x radius...
- Page 23 BESANTEK Cubic equations CFM (ft3/min) = Air Velocity (ft/min) x Area (fl CMM (m /min) = Air Velocity (m/sec) x Area (m x 60 inches Measurements made in NOTE: feet meters must be converted to before using the above formulae.
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