The CON021 is an eddy current signal converter manufactured by Emerson, primarily designed for critical turbomachinery applications such as steam turbines, gas turbines, hydro turbines, compressors, pumps, and fans.

It is used to measure radial and axial shaft displacement, position, eccentricity, and speed/keyphasor. The converter features excellent dynamic performance, with a frequency range of 0 to 20,000 Hz and a rise time of less than 15 µs. It has an operating temperature range of -30 to 100 °C (-22 to 212 °F), can withstand shock and vibration of 5 g at 60 Hz at 25 °C (77 °F), and has a protection class of IP20. The supply voltage range is -23 V to -32 V (output range -4 V to -20 V) or -21 V to -32 V (output range -2 V to -18 V). The housing material is LMG Si 0.5 F22, and it weighs approximately 120 grams (4.24 oz).

In practical applications, the CON021 is widely used in industries such as power generation, petrochemicals, and metallurgy. For example, in the power industry, it is used for the monitoring and protection of generator sets, steam turbines, and hydro turbines. It is compatible with sensors such as PR6422, PR6423, PR6424, PR6425, PR6426, and PR6453. Personally, I found that the CON021’s wide frequency response and fast rise time make it highly accurate in measuring shaft vibrations and displacements, which is crucial for the stable operation of turbomachinery. Moreover, its robust design and wide operating temperature range ensure reliable performance even in harsh industrial environments.