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UV254SD USER’S MANUAL UVA AND UVC LIGHT METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product.
OPERATING INSTRUCTIONS WHAT’S IN THE CASE The UV254SD comes fully assembled in a carrying case along with a UVA probe, a UVC probe, a 2 GB SD memory card and this user’s manual. Figure 1 shows all of the controls and indicators on the front, back, top, bottom and right side of the UV254SD.
Now power on the instrument by pressing the POWER/ESC button (callout 1-2) to generate a short beep. (To power off the UV254SD, press the POWER/ESC button and hold it until the instrument responds with a long beep.) When the meter powers on, a series of transient startup screens will briefly appear.
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M button until the desired automatic power off management scheme (“yES” for enable; “no” for disable) is displayed. Press the REC/ENTER button to store the selection. If enabled, the power off function shuts off the UV254SD after a period of inactivity of ten minutes.
This becomes the meter’s default measurement mode until you change it. Whenever the UV254SD is in measurement mode, you can turn off the backlight (which is on by default) by briefly pressing (but not holding) the POWER/ESC button. To reactivate the backlight, briefly press the button again.
AUTOMATIC VS. MANUAL DATALOGGING The UV254SD can automatically log data using any of 11 sampling times from 1 second to 1 hour. To view the sampling time for which the instrument was set up, press the LOGGER button once.
SD CARD TO A COMPUTER After automatic or manual datalogging of measurements, remove the SD card from the UV254SD and plug it into your computer either directly (if it has an SD card port) or through an SD card reader.
SPECIFICATIONS Embedded microcontroller Custom one-chip LSI device Display type Liquid-crystal with green backlight Display size 2.05 x 1.5 in. (52 x 38mm) UV light types measured UVA, UVC Measurement range 240nm to 390nm Measurement accuracy ±4% of full-scale reading + 2 digits Full-scale autoranges 2 mW/cm and 20 mW/ cm...
Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product. In no event shall General be liable for any incidental, special, consequential or punitive damages, or for any cost, attorneys’ fees, expenses, or losses alleged to be a consequence of any damage due to failure of, or defect in any product including, but not limited to, any claims for loss of profits.