Owner's manual

POWER button. Powers thermometer on and off.

TC TYPE button (HH91 only). Selects thermometer

type (“K”, “J”, “T” or “E”)

T1/T2/T1-T2 button (HH92 only). Selects one of four

display options:

a) T1 on primary readout and T2 on secondary

readout

b) T2 on primary readout and T1 on secondary

readout

c) T1-T2 on primary readout and T1 on secondary

readout

d) T1-T2 on primary readout and T2 on secondary

readout

°C/°F/K button. Selects temperature unit of primary

and secondary readouts

MAX/AVG/MIN button. Pressed briefly, selects

whether ma

ximum, minimum or average value of

measurement sess

ion (since thermometer was

powered on) is displayed on primary readout.

Pressed and held, exits Max/Min/Avg display mode

and resumes real-time display mode.

HOLD (ENTER) button:

• On HH91, pressing HOLD button briefly “freezes”

T1 value on primary readout.

• On HH92, pressing HOLD briefly freezes T1, T2 or

T1-T2 value on primary readout and T1 or T2

value on secondary readout (values held are

determined by setting of T1/T2/T1-T2 button).

• On HH91 and HH92, ENTER button is only used

to set system time format.

SETUP button. Initiates 7-step

setup procedure

(see p. 7)

and buttons. On HH91 and HH92, used to

enable/disable ambient temperature compensation