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2.5 Keyboard
Traditional metal-click switches, with a working life of one million operations, are used to enter the operator’s instructions.
The contact closure of the keyboard keys is acknowledged, as a coded signal, directly by the microcontroller.
2.6 Display
The high contrast customised alphanumeric LCD display indicates the measured temperature value.
It is also used for operators’ messages, instrument configuration set-up, special operative modes, etc.
It is equipped with a backlight device to allow easy readings even in poor light conditions.
2.7 Digital Interface
A digital interface with TTL logic levels is available for communication with external units. A serial data port provides
communication capability at a logic level of 0-5 V (four wires: Tx, Rx, GND, Vcc).
A special software set enables the transfer of all the recorded data on a Personal Computer for further statistical
analysis.
2.8 Self calibration
The hardware-firmware design allows the automatic calibration of the instrument. The calibration procedure is protected
by a security code.
2.9 Thermocouple Input
To extend the operative capability the instrument is equipped with an auxiliary input for thermocouple.
This feature, when used with a calibrated thermocouple, can be used to obtain accurate temperature measurements
eliminating the problems of emissivity and the interfering light.
The thermocouple can be used to obtain an accurate temperature reading of the target material and then these data are
used to determine the compensation value for the actual emissivity, including the interfering light, within a range from
0.10 to 1.00.
2.10 Analog Output
An analog output (1 mV/°C/°F/K) is available to drive an external analog input device (eg. a potentiometric or hybrid
recorder) for long term trend profiling and tests.