Pyromation 28-02700-T - Manual (Page 12)

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2. If a thermocouple is not connected or if the ther-
mocouple is defective, the display will indicate
OPEn.
3. Select °C or °F by pressing the °C/°F key. Tem-
perature scale can be switched at any time. The
thermometer remembers the last selected scale
the next time you turn the power on.
4. For optimum instrument accuracy, allow one
minute for ambient temperature stabilization. If
the unit has been stored at an extreme ambient
condition, more time will be needed.
Thermocouples are sensitive at the tip or measur-
ing junction. When taking temperature measure-
ments, allow time for the reading to stabilize. Mul-
tiplying the time constant of the probe by 5 will give
you the approximate time required.
Note that the readings will automatically change to
1° resolution below –99.9° or above 299.9°.
If desired, press the HOLD key to retain the read-
ing on the display. Press HOLD key again for nor-
mal operation.
If the display shows "- - - -" the temperature read-
ing is out of range of the instrument.
OPERATION
Note: Be sure the thermocouple you are using
matches the instrument setting indicated on the
unit.
1. Press the ON/OFF key. The thermometer per-
forms a self-test and all display digits and indi-
cators, as shown below, should remain on for
approximately two seconds.