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MarMonix MAN-745 User Manual

Thermoanemometer + infrared thermometer
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ThermoAnemometer+InfraRedThermometer
Products Code: MAN-745
User Manual
WWW.MARMONIX.CO

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Summary of Contents for MarMonix MAN-745

  • Page 1 ThermoAnemometer+InfraRedThermometer Products Code: MAN-745 User Manual WWW.MARMONIX.CO...
  • Page 2 Introduction The 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. The InfraRed feature includes a laser pointer for convenient targeting. In addition, the meter can store 16 area setting dimension for easy recall.

  • Page 3: Specifications

    Specifications Air Velocity Range Resolution Accuracy m/s (meters per sec) 0.40 - 30.00 m/s 0.01 m/s ± (3%rdg + 0.20 m/s) km/h (kilometers/hour) 1.4 - 108.0 km/h 0.1 km/h ± (3%rdg + 0.8 km/hr) ft/min (feet per 80 – 5900 ft/min 1 ft/min ±...

  • Page 4: Meter Description

    battery life is reduced to 2 to 3 hours approx.) Battery current 8.3 mA DC approx. Weight 1.6 lbs. (725g) including battery & probe Dimensions Main instrument: 7.0 x 2.9 x1.2" (178 x 74 x 33mm) Sensor Head: 2.75” (70mm) Diameter Meter Description 1.
  • Page 5 • MAX/MIN (Temperature) Press to record and store the highest, lowest readings for air temperature. HOLD (Temperature) Press to freeze the displayed temperature reading. Press again to • unlock the display. AVG Press and hold to enter averaging mode. Averages up to 20 readings. •...

  • Page 6: Display Layout

    Display Layout MAX (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 PROBE TEMP: Reminder that the top LCD digits represent Air (Vane) Temperature : Indicates that the laser pointer is on.

  • Page 7: Operation

    Operation Connecting the Vane 1. The vane plug is inserted in the meter’s sensor jack at the top of the meter. The plug and jack are keyed so that the plug can only fit in the jack one way. 2. Turn the plug carefully until it lines up with the jack and then firmly push the plug in place. Do not apply undue force or try to twist the plug side-to-side.
  • Page 8 Air Flow Measurements (CMM / CFM) Turn on the meter using the ON/OFF button Press the UNITS button to select the desired air flow units: CMM Side view of Vane (cubic meters per minute) or CFM (cubic feet per minute). NOTE: At power up the meter will display the last unit of measure previously entered.
  • Page 9 7. 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.
  • Page 10 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 11 InfraRed (Non-Contact) Temperature Measurements 1. The IR sensor is located at the top of the meter. 2. Point the sensor toward the surface to be measured. 3. Press and hold the red IR button to begin measuring the surface temperature of a desired target.

  • Page 12: Battery Replacement

    Battery Replacement When appears on the LCD, the 9V battery must be replaced. 1. Disconnect the vane. 2. 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 13 InfraRed Measurement Considerations  When taking IR measurements the meter automatically compensates for ambient temperature changes. Note that it may take up to 30 minutes to adjust to extremely wide ambient changes.  Low temperature measurements quickly followed by high temperature measurements may require several minutes to stabilize as a result of the IR sensor cooling process.
  • Page 14 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 15 Thermal Emissivity Table for Common Materials Material Emissivity Asphalt 0.90 to 0.98 Concrete 0.94 Cement 0.96 Sand 0.90 Earth 0.92 to 0.96 Water 0.67 0.96 to 0.98 Snow 0.83 Glass 0.85 to 1.00 Ceramic 0.90 to 0.94 Marble 0.94 Plaster 0.80 to 0.90 Mortar 0.89 to 0.91...

  • Page 16: Useful Equations And Conversions

    Useful Equations and Conversions Area equation for rectangular or square ducts Height Width (W) Area (A) = Width (W) x Height (H) Area equation for circular ducts Area (A) = x r Radius Where = 3.14 and r radius x radius Cubic equations CFM (ft /min) = Air Velocity (ft/min) x Area (ft...

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