General Tools and Instruments UV254SD - Manual (Page 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 2 and 20 mW/ cm 2
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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