Physitemp Instruments TH8 - Manual (Page 4)

4.0 DIRECTIONS FOR USE
4.1 Connect temperature sensor(s) and cable(s). One, two or three of the numbered INPUTS
may be used.
4.2 Depress the ON-OFF pushbutton. In the ON position an orange indicator will be displayed
within the pushbutton. For several seconds the display should read “1888” as a segment check.
Do not use thermometer if any display numeral is incomplete.
4.3 Depress the numbered INPUT SELECT pushbutton which corresponds with the INPUTS
connection of the sensor to be monitored. A blue indicator will be displayed within the pushbut-
ton selected.
4.4 Monitor temperature. If more than one sensor is connected, switch whenever desired by
depressing the appropriate INPUT SELECT pushbutton. A calibration check is not necessary
before each use.
4.5 Special display indications.
LO BAT - This display appears when battery voltage is low. However, enough power
remains for at least 8 hours of accurate monitoring. The batteries should be
replaced as soon as convenient.
INPUT - This indicates an input circuit problem. Check connections. If necessary,
replace sensor or extension lead.
C or F - Display indicates temperature scale that has been selected with the slide switch
on the back panel.
5.0 REPLACING BATTERIES CAUTION: Use only alkaline “C" cell batteries.
5.1 Switch instrument OFF.
5.2 Grasp "squeeze release" on back panel
and pull off battery retainer.
5.3 Remove battery connectors and slide
out battery holder.
5.4 Discard old batteries and replace with
fresh “C" cells.
5.5 Replace battery holder and refit connectors.
5.6 Insert lower edge of battery retainer into bottom of case. While squeezing the "squeeze
release" push retainer in until flush with back of case. Release the squeeze release and push the
battery retainer in until the latch clicks.
4
SQUEEZE RELEASE