Owner's manual

OPERATING INSTRUCTIONS

MONITORING TEMPERATURE(S)

IN REAL TIME

To measure temperatures sensed by one or more

installed thermocouples, press the POWER button

to activate the thermometer. On the HH91, the

temperature sensed by the T1 thermocouple will

appear on the primary readout. On the HH92, the

temperature sensed by the T1 thermocouple will

appear on the primary readout and the T2

temperature (if a T2 thermocouple is installed) will

appear on the secondary readout. This is the

“normal

” display mode for the HH92.

To swap the re

adouts on the HH92 (so T1 is shown

on the secondary readout and T2 is shown on the

primary readout), press the T1/T2/T1-T2 button.

To show the value of T1-T2 on the primary

readout and the value of T1 on the secondary

readout, press the T1/T2/T1-T2 button again. To

show T1-T2 on the primary readout and T2 on the

secondary readout, press the T1/T2/T1-T2 button

again.

When the HH92 is powered off and then on again, it

will resume operation in “normal” display mode—

with T1 on the primary readout and T2 on

the

secondary readou

To hold the value on the primary readout (HH91) or

the values on both readouts (HH92), press the HOLD

button. Note that while the thermometer is holding a

reading or readings, the relative time clock will

continue ticking. To release the hold and resume

real-time display of T1, T2 or T1-T2 values, press the

HOLD button again.