80260-00

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The 80260-00 is a thermocouple amplifier module which is used to convert a milli-volt temperature signal from a thermocouple to a 4-20mA output signal. The module includes two LEDs that provide an indication of power and also helps the user adjust the amplifier to provide the necessary gain for the temperature measurement. This article is intended to provide an understanding of the application field and working principle of this module.

Application field

The 80260-00 is used in a wide variety of applications such as industrial process control, heating and ventilation systems, climate control systems, and laboratory research. The module is designed to amplify signals generated by thermocouples. These thermocouples are temperature sensors that produce a milli-Volt signal proportional to the temperature measured. The module amplifies this signal to a 4 to 20mA output, which is the standard for industrial process control systems, such as the Pithon control systems. The module is also capable of powering the thermocouple through the 4-20mA circuit.

Working principle

The 80260-00 is a thermocouple amplifier module that uses a positive feedback loop to produce an amplified signal from the thermocouple. The module includes two inputs, one for the 4-20 mA output, and one for the milli-Volt input from the thermocouple. The milli-Volt input is amplified and a voltage divider is used to adjust the gain of the amplifier. The output is then converted to a 4-20 mA signal. This signal is then fed back to the input of the amplifier, creating a positive feedback loop, which is used to stabilize the output and provide a constant 4-20 mA signal.

The module also includes two LEDs and a trim pot for further control. The LEDs serve as an indicator of power on and also help the user adjust the gain of the amplifier. The trim pot is used to adjust the amplifier gain in order to match the thermocouple impedance, as well as to adjust the output offset. The trim pot can also be used to fine tune the output offset and temperature range.

The 80260-00 is a cost effective and reliable module for converting milli-Volt signals from a thermocouple into a standardized 4-20mA signal. The module makes it possible to measure temperature in a wide range of applications and can be used in both industrial and laboratory applications.

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