General-tools-and-instruments UV254SD Manual de usuario descargar pdf (Pagina 10)

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

Stored readings Maximum, minimum

Datalogging sampling times 1 second to 1 hour (automatic mode)

SD card capacity 1 GB to 16 GB

Settable parameters Date, time, auto power off, beep sound, temperature unit

(ºF or ºC), sampling time, thermocouple type (K or J),

decimal point or comma

Operating temperature 32º to 122ºF (0º to 50ºC)

Operating relative humidity 0 to 85%

Power source 6 Alkaline “AA” batteries or optional 9-VDC AC adapter

Power consumption 6.5 mADC (normal operation, with backlight off and SD

card not saving data; 30 mADC with backlight on)

Dimensions of meter 6.97 x 2.68 x 1.77 in. (177 x 68 x 45mm)

Weight of meter 12.38 oz. (351g)

Dimensions of UVA probe head 1.77 in. (diagonal) x 1.26 in. (L) (45 x 32mm)

Dimensions of UVA probe handle 0.94 in. (diagonal) x 4.92 in. (L) (24 x 125mm)

Weight of UVA probe 3.53 oz. (100g)

Dimensions of UVC probe 1.50 (diagonal) x 0.98 in. (L) (38 x 25mm)

Weight of UVC probe 3.63 oz. (103g)

MAINTENANCE & TROUBLESHOOTING TIPS

Keep the UV light probes clean and their sensors under their protective covers when not in use.

When the icon appears in the left corner of the display, it’s time to replace the six

“AA” batteries that power the instrument (although measurements will remain valid for

several hours after the low-battery indicator first appears). Replacing the batteries requires

removing the two screws that hold the battery compartment cover in place, as explained in

Step 1of the setup procedure on page 5. After inserting fresh batteries in the correct

orientation, tighten the screws to secure the cover.

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General-tools-and-instruments UV254SD Manual de usuario Pagina 10