SPECIFICATION
Display
3½ digit black LCD on silver, annunciators and backlight (option -T only)
Supply voltage
1.3 - 1.7v DC for clock/thermometer (V
5.0 v ±0.5V DC for backlight (-T version)
Current consumption
7.0µA (clock)
13.1µA for 10s sampling; 41.2 µA for 1s (thermometer)
80mA maximum (HED241-T backlight)
160mA maximum (HED242-T backlight)
240mA maximum (HED243-T backlight)
Output current for alarm
200µA (maximum)
Accuracy
±1° (°C or °F)
Output current available (pins 3 and 4)
4µA (maximum)
Alarm frequency (pin 9)
4096Hz
External Sensor
TH 103 with 1 metre cable (available as an optional extra)
Environmental protection
IP40/DIN 40 050
Temperature measuring range using external thermistor
-20°C to +70°C
Operating temperature and measuring range using internal sensor
0°C to +50°C
Storage temperature
-20°C to +70°C
4
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