AccuTech Pyrometer - 52-50640 / 52-50635

These pyrometers may have a coiled cord probe (as shown) or a straight cord, depending on model. All function the same. Plug the probe into the top of the pyrometer. Notice the wide (-) and narrow (+) spades.If the unit reads backwards (temp displayed goes down with increased temp) it is plugged in backwards. The unit will not display without the probe. This pyrometer will auto-shutoff after 30 minutes. There is also a low battery indicator on the display. Replace with an alkaline 9 volt in the rear. To use the MAX/MIN functions push the button once. The unit will display the highest temp reached. Push again for MIN. To clear, hold button for 3 seconds. To use HOLD push button once. Temp will stay until you push HOLD again. To use REL: This function will tell you the difference between 2 temp readings. - For example between the inside and outside of a tire or the front to the rear. Take the first temp and push the button once. The display will go to 0. Take the second temp. The display will read the difference + or –. Push the button again to clear.