HT7510
Functional Description
The following description is for HT7510 only.
• Power switch: press switch to turn the power
on or off.
• When power is on: press the switch, then it will
generate a “beep” sound for 0.125 sec.
a. Displays all the segments first for 2 sec.
b. After a. shows the temperature of the last
reading for 2 sec.
c. After b. shows L °C (or °F ) for 0.75 sec.
d. After c. displays the measurement tem-
perature, the °C (or °F) mark will flash at a
speed of 1Hz.
e. If the temperature < 32 °C (or 90 °F), the
display shows L °C (or °F).
f. If the temperature ≥ 42 °C (or 108 °F), the
display shows H °C (or °F).
g. The display always show the higher tem-
perature during the measurement.
h. If the measured temperature does not
change for more than 16 sec, the measure-
ment is over and the °C (or °F) mark flash
stops.
i. When measurement is over, if the tempera-
ture > 37.5 °C (or 99.5 °F),the buzzer alarms
“Beep-Beep-Beep---Beep-Beep-Beep---” for
4 sec, as follows:
if the temperature ≤ 37.5 °C (or 99.5 °F),
the buzzer alarms “Beep-Beep-Beep-Beep-
” for 4 sec, as follows:
j. If the measurement is over 8 min. 40 sec.
the power will automatically turn off
k. When the measurement is over and the
temperature rises within 8 min. 40 sec, the
°C (or °F) mark will flash again (repeat
from step 2-d), and starts to count again
until 8 min. 40 sec.
l. When beep sound is on for 4 sec, the tem-
perature is not measured.
• When power is off: the standby current ≤ 1µA.
• The frequency of the buzzer is 5.3kHz
• Bonding option: °C or °F.
• Measurement to 0.1 degree in either °C or °F.
• Sensor use 503ET.
• Reference resistor value (sensor in 37.0 °C)
• When battery voltage is low, the battery mark
“∇” flashes at a speed of 1 Hz and the meas-
urement may not be accurate. The low voltage
detect: 2.4V ± 0.05V.
• During the process of mass production, in or-
der to adjust the reference resistance (RF), let
test 2 be floating, the measured temperature
will be the actual temperature of the meas-
ured environment. It can be up or down, not
always the higher one.
Selection table for clinical thermometer
Part No.
Voice Language
HT84018-0D
English
6
10th Feb ’99