EXTECH 407026 Heavy Duty Meter User Guide

407026 Heavy Duty Meter
User Guide

Introduction

Congratulations on your purchase of the Extech Heavy Duty Light Meter. This light meter offers selectable lighting types, data record/recall, relative display mode, and PC interface. This professional meter, with proper care, will provide years of safe reliable service.

Specifications

General Specifications

range);
Relative mode: 0 to 1999%
Data Hold| Freezes displayed reading
Lighting Types| Sodium, Daylight/Tungsten, Fluorescent and Mercury
Sensor Structure| Cosine/color corrected photo-diode meets C.I.E.
Memory Store/Recall| Records/Recalls Max/Min/Avg readings
Sample rate| 0.4 seconds (approx.) per reading
Zero Adjust| Push-button procedure
Auto Power Off| After approx. 10 minutes
Data Output| RS-232 PC serial interface (optional software/cable PN 407001)
Operating conditions| 0 °C to 50 °C (32 °F to 122 °F); <80% RH
Power Supply| 9V battery
Power consumption| Approx. 5 mA DC. (approx. 200 hr battery life)
Weight| 320 g (0.71 lbs.)
Dimensions| Instrument: 180 x 72 x 32 mm (7.1 x 2.8 x1.3″)
Sensor: 85 x 55 x 17.5 mm (3.3 x 2.2 x 0.7″)

Range Specifications

Note: The accuracy specification above applies to calibration performed using a precision standard incandescent tungsten light source of 2856O K with meter on the tungsten setting.

Meter Description

1. LCD Display
2. Keypad
3. Light sensor
4. Battery compartment (rear)
5. Sensor input
6. RS-232 PC Interface jack
7. Protective Holster
8. LCD Contrast Adjust

Operation

Meter Power and Automatic Power Off

1. Press the POWER button to turn the meter on. If the display does not switch on, check the 9V battery.
2. Press the POWER button again to turn the meter off.
3. The meter has an automatic power off feature that conserves battery energy. After 10 minutes the meter automatically shuts off. To defeat this feature, press the RECORD button to put the meter in the recording mode.

Display ZERO Calibration
Please perform a zero calibration before each use. This will ensure the highest accuracy.

1. Place the sensor cover over the light sensor, effectively blocking all light to the sensor.
2. Select the 2,000 LUX range using the RANGE switch.
3. Press the ZERO button. The reading should be zero.
4. Remove the sensor cover from the light sensor and proceed.

Selecting the unit of measure
Press the LUX/Fc button to select the desired unit of measure. The display icons will reflect the current setting.
Selecting a light source
Select the type of lighting to be measured by pressing the LIGHT SOURCE button. The display will indicate the lighting type icon (see icon list below).
L = Tungsten/Daylight (use this setting when calibrating with a Tungsten lamp)
F = Fluorescent
S = Sodium
C = Mercury
Note: For Halogen and Metal Halide light use the Tungsten setting

Taking Measurements
Hold the light sensor in the area where light is to be collected. The light being measured must encompass the entire surface of the light sensor dome (pin point lighting such as with LED light cannot be measured).
The display will indicate the light intensity value in LUX or Foot candles (Fc). Note that since the main display area is limited to a reading of ‘1999’, the right-most digit in the 20,000 LUX and 5,000 Fc ranges appears on the lower LCD line. In the 50,000 LUX range, the last two digits appear on the lower LCD line
It may be necessary to adjust the display contrast due to a change in viewing angle or voltage drift. Use the LCD Contrast adjustment located on the right side of the meter to set the preferred contrast.
Display Range Selection
Take a measurement starting at the highest range and then work down using the RANGE switch. If the display shows dashes along the top of the reading area ( ¯ ¯ ¯), the input exceeds the maximum value for the selected range; select a higher range. If the display shows dashes along the bottom of the reading area ( – – – ), the input is too low; select a lower range.
Data Hold
While measuring, press the HOLD button to freeze the reading. The LCD will display D.H. indicating that the Data Hold function is engaged. Press HOLD again to return to normal operation.
Relative % Mode
In the RELATIVE mode of operation, the meter displays light level as a comparison to a reference value. The reference value is stored by pressing the ‘%’ button while the desired light level reference is on the display. When the button is pressed, ‘100%’ will be displayed and the ‘%’ icon will appear.
After the ‘%’ button is pressed, light measurements will be displayed as a percentage of the reference value. For example, if the light level reference is 1000 LUX, a display of 500 LUX will be represented as 50%. Further, a light level of 250 LUX will display as 25%. Use the equation below:

Press the ‘%’ button again to return to normal operation.
Maximum (MAX), Minimum (MIN), and Average (AVG) readings
The meter can keep track of the highest, lowest, and average readings for later recall.

1. Press the RECORD button to start tracking the MAX, MIN, and AVG readings. The REC display will switch on.
2. When desired, press the RECALL button.
3. The MAX display icon appears next to the REC display icon. The reading shown is the highest reading encountered since the RECORD button was pressed.
4. Press RECALL twice more to view the MIN and AVG readings.
5. Press the RECORD button to return to normal operation.

RS-232 PC Interface
This meter is equipped with a RS-232 serial data port. For streaming of data to a PC via the RS232 Output jack, the optional 407001-USB kit (RS232 to USB cable and driver CD) along with the 407001 software (available free at www.extech.com) are required.
Battery Replacement
When the low battery indicator appears (LBT), replace the battery as soon as possible. Reliable readings can be obtained for several hours after the first appearance of the low battery indication.
To replace the battery:

1. Remover the meter’s rubber protective holster.
2. The battery compartment is located on the lower back of the meter. Pry the battery compartment cover off using a small coin or screwdriver and remove the battery.
3. Replace the 9V battery and reinstall the cover.
4. Ensure that the battery cover is secured after replacing the battery.

You, as the end user, are legally bound (Battery ordinance) to return all used batteries and accumulators; disposal in the household garbage is prohibited!
You can hand over your used batteries/accumulators at collection points in your community or wherever batteries/accumulators are sold!
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its life cycle

Typical Light Levels

Study
1,500-3,000| 150-300| Electronic Assembly, Drafting| 1,000-2,000| 100-200| Sewing
| | Office| | | Restaurant
75-100| 7-10| Indoor Emergency Stairs| 75-150| 7-15| Corridor Stairs
100-200| 10-20| Corridor Stairs| 150-300| 15-30| Entrance, Wash Room
200-750| 20-75| Conference, Reception Room| 300-750| 30-75| Cooking\Dinning Room
750-1,500| 75-150| Clerical Work| 750-1,500| 75-150| Show Window
1,500-2,000| 150-2000| Typing, Drafting| | |
| | Store| | | Hospital
75-150| 7-15| Indoors| 30-75| 3-7| Emergency Stairs
150-200| 15-20| Corridor/Stairs| 75-100| 7-10| Stairs
200-300| 20-30| Reception| 100-150| 10-15| Sick Room, Warehouse
300-500| 30-50| Display Stand| 150-200| 15-20| Waiting Room
500-750| 50-75| Elevator| 200-750| 20-75| Medical Exam Room
750-1,500| 75-150| Show Window, Packing Table| 750-1,500| 75-150| Operating Room
1,500-3,000| 150-300| Storefront, Show Window| 5,000-10,000| 500-1000| Eye Inspection

Common Conversion Factors

10-4 lm/cm2
10-4 phot (ph)
9.290 x 10-2 lm/ft2
9.290 x 10-2 foot-candles
Luminance (Visible Flux Density per Solid Angle)| 1 lm/m2/sr =| 1 candela/m2
Luminous Intensity (Visible Flux per Solid Angle)| 1 lm/sr =| 1 candella
Luminous Flux ( Visible Flux)| 1 lumen (lm) =| 1.464 x 10-3 watts @ 555 nm

Copyright  ©  2014 FLIR  Systems, Inc.
All  rights reserved  including the right  of reproduction  in  whole  or in part  in  any form
www.extech.com
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