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2. Figure: Diurnal Variations in Body Temperature
Hours of activity and work Hours of rest and sleep
a.m. p.m. a.m.
Deg.
Deg.
F.
C.
Source: 1911, Encyclopedia Britannica, 11
th
edition, Volume 2, Part 1, Slice 1, p95.
TROUBLESHOOTING
LCD screen Description & Solution
fl ashes
Battery power is low, but the CTD504 can still measure.
➜
Remove the worn-out battery. Insert a new CR2032 battery
as soon as possible. Without enough energy, the CTD504
cannot function as it should.
lights
Battery power is too low to measure.
➜
Remove the worn-out battery. Insert a new CR2032 battery
as soon as possible.
Too high ambient temperature
Ambient temperature is higher than 40.0 °C (104.0 °F)
➜
Leave the CTD504 in a room around 10.0 °C – 40.0 °C
(50.0 °F – 104.0 °F) for 30 minutes. Then measure again.
Too low ambient temperature
Ambient temperature is lower than 10.0 °C (50.0 °F)
➜
Leave the CTD504 in a room around 10.0 °C – 40.0 °C
(50.0 °F – 104.0 °F) for 30 minutes. Then measure again.