General Tools and Instruments DT4208SD - Manual (Page 14)

MAINTENANCE & TROUBLESHOOTING TIPS
Keep your probes and thermocouples clean.
When the icon appears in the upper left corner of the display, it’s time to replace the
eight “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 1 of the Setup Instructions on p. 6. After inserting fresh batteries in the
correct orientation, replace the cover and tighten the screws to secure it.
If the meter “freezes” (like a computer) and buttons become unresponsive, try resetting the
instrument by pushing the RESET button on its right side (callout 1-12 of Fig. 1) with the
end of a paper clip.
Remove the batteries when storing the instrument for an extended period of time.
Do not drop or disassemble the instrument or immerse it in water.
OPTIONAL ACCESSORIES
Optional accessories available from General Tools & Instruments include:
• Additional TPK500 thermocouple probes
• TPK900 thermocouple probes with a measurement range of -50° to 900°F
(-45° to 482°C)
• TPK05 thermocouple probes with a measurement range of -40° to 1562°F
(-40° to 850°C)
• TPK03 thermocouple probes with a measurement range of -40° to 950°F
(-40° to 510°C)
• Other “K” type thermocouple probes and extenders of various diameters, types
and measurement ranges
• 9VDC adapter for a 110V power supply (General P/N AC1)
Types “J”, “T”, “E”, “R” and “S” thermocouples are widely available from industrial
distributors.
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