Extech Instruments HD450-NIST User Manual
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Extech Instruments HD450-NIST User Manual

Heavy duty datalogging light meter with pc interface
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User's Guide
H
Duty Datalogging L
M
eavy
ight
eter
with PC Interface
Model HD450

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Summary of Contents for Extech Instruments HD450-NIST

  • Page 1 User's Guide Duty Datalogging L eavy ight eter with PC Interface Model HD450...

  • Page 2: Meter Description

    Introduction Congratulations on your purchase of the Extech HD450 Digital Light Meter. The HD450 measures illuminance in Lux and Foot candles (Fc). The HD450 is a Datalogger and includes a PC interface and Windows compatible software for downloading data. Up to 16,000 readings can be stored on the meter for download to a pc and 99 readings can be stored and viewed directly on the meter’s LCD display.

  • Page 3: Operation

    Operation Meter Power 1. Press the Power button to turn the meter ON or OFF 2. If the meter does not switch on when the power button is pressed or if the low battery icon is displayed on the LCD, replace the battery. Auto Power Off (APO) 1.
  • Page 4 Maximum (MAX) and Minimum (MIN) Reading Memory The MAX-MIN function allows the meter to store the highest (MAX) and lowest (MIN) readings. Press the MAX-MIN button to activate the feature. “Manu” and “MAX” will appear on the display and the meter will only display the highest reading encountered. Press the MAX-MIN button again.
  • Page 5 Clock and Sample Rate Setup In this mode, the ▲ and ▼ arrow buttons will allow adjustment of the selected (flashing) digits. The ◄ and ► buttons will scroll to the next or previous selection. Power the meter, then press and the REC/SETUP and UNITS buttons simultaneously to enter the Setup mode.

  • Page 6: Usb Pc Interface

    USB PC Interface Description The HD450 meter can be connected to a PC via its USB interface. A USB cable, along with Windows software, is included with the meter. The software allows the user to:  Transfer previously stored readings from the meter’s internal memory to a PC ...

  • Page 7: Specifications

    Specifications Range Specifications Units Range Resolution Accuracy 400.0 ± (5% rdg + 10 digits) 4000 40.00k 0.01k ± (10% rdg + 10 digits) 400.0k 0.1k Foot candles 40.00 0.01 ± (5% rdg + 10 digits) 400.0 4000 ± (10% rdg + 10 digits) 40.00k 0.01k Notes:...

  • Page 8: Maintenance

    Maintenance Cleaning The Meter and its sensor can be cleaned with a damp cloth. A mild detergent may be used but avoid solvents, abrasives, and harsh chemicals. Battery Installation / Replacement The battery compartment is located on the back of the meter. The compartment is easily accessed by pressing and sliding the rear battery compartment cover off of the meter in the direction of the arrow.

This manual is also suitable for:

Hd450

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