PCBA scheme development -- electronic thermometer scheme
2021-11-24 09:31:57
fandoukeji
Brief description of electronic thermometer scheme:
Working voltage: dc2.6v-3.6v
Test range: 0 ℃ ~ 100 ℃ (larger range can be customized)
Test accuracy: ± 0.1 ℃, in accordance with en12470 and ASTM e1112.
Resolution: 0.1 ℃ / ° F, 0.01 ℃ / ° F. One or two decimal places
Unit selection: press the key to switch ℃ / ℉;
Calibration point: 0 ℃ / 100 ℃
Operating temperature: - 10 ℃ - 75 ℃
Working current: less than 100mA
Calibration: two point calibration: 0 ℃ and 100 ℃; Times ≤ 300 times
Sensor type: electronic PN junction or voltage transmitter. IC built-in amplifier circuit, no external pre op amp.
Low voltage detection: one point or two-point detection
Key types: touch, touch and toggle
Display: LCD display with backlight
Buzzer: Yes