Longacre 50682 Memory Tire Pyrometer User Manual

Clearing display

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INTRODUCTION: Because this pyrometer records the 12 tire temperatures in a
specified order you must take the temperatures in that same order. Start with the
RF, then RR, LR, and LF. Do the outside of the tire first, center, then the inside.

IMPORTANT NOTE:

This pyrometer has special circuitry that will actually determine the final temp
more quickly and accurately than ordinary pyrometers. Simply stick the probe
into the tire and push the Read button immediately. No need to wait for the read-
ing to stabilize - the microprocessor will do this for you. This is called "Anticipa-
tion Circuitry" because it electronically anticipates - computes - the final stabilized
temp based on the rate of temp change of the probe. Almost instantly the pyrome-
ter will double beep and move on to the next temperature location on the tire.
WAIT UNTIL THE DISPLAY CHANGES TO MOVE THE PROBE. This system gives
you more accurate and consistant readings and helps minimize the variations
caused by different people's style of taking tire temps.

NOTE:

If you prefer to take temps in the traditional way - waiting for the temps to stabilize on the display, then record

the readings - this pyrometer can be reset to operate this way. All other functions will remain the same. To change hold
down Memory buttons #1 & 10 together for 2 seconds. The operating system will change so that when the Read button is
pushed the actual temperature at that time will be recorded. No "Anticipation" of the final temp will take place.The unit will
stay in this mode even if shut off. To change back to anticipation mode repeat the above procedure.

TO TAKE TEMPERATURES: Turn the pyrometer on. If any temps from your last
use are there they must be Cleared before you can take a new temps. You can
save them by storing in one of the Memories - 1 to 10.

To CLEAR DISPLAY: Push "Clear Display" button and hold for 2 seconds. The
following message will appear:

CLEARING DISPLAY

CLEARING DISPLAY

CLEARING DISPLAY

CLEARING DISPLAY

CLEARING DISPLAY

DID YOU WANT TO SAVE?

DID YOU WANT TO SAVE?

DID YOU WANT TO SAVE?

DID YOU WANT TO SAVE?

DID YOU WANT TO SAVE?

If you do want to save these in Memory QUICKLY RELEASE the "Clear Display"
button. Once the display is cleared those temps are lost.

BEGIN: The display should now be blank except for the upper right temp location
(Right Front outside). An arrow (>) indicates the active temp. Stick the probe into
the outside edge of the tire and push the "Read" button immediately. LEAVE THE
PROBE IN THE TIRE UNTIL THE DISPLAY MOVES TO THE NEXT LOCATION. You
don't need to wait for the temps to stabilize. The pyrometer will double beep, freeze
the temp on the display, and move to the next location. Move the probe to the
center of the tire and repeat. Take the remaining temps in the same way. After you
finish the last one (LF inside - > gone) all temps on the display will be frozen.

MISTAKES: If you make a mistake and don't feel that the last temp is correct you
can "back up" one or more locations. Push the "Re-Read" button as many times as
needed. Any temps in that location(s) will be erased.

MORE TEMPS: To take more temps it will be necessary to Clear the display. You
may want to save these temps in one of the Memories. Temps on the display will
stay until you Clear them, even if the unit is turned off.

- OVER -

Longacre Racing Products

www.longacreracing.com

Instructions For No. 50682 Memory Pyrometer

6/09

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