The number of impulses in a time unit enables the display of rotational speed. The correct sensor, mounted on the shaft, enables its use as a speed indicator to adjust rotational speed or protect the device against underspeed or overspeed situations.

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STI-73

STI-73 ratemeters are the board-type ratemeters designed to control rotational speed. Available parameters of divider and multiplier enable flexible scaling of rotational speed and also... more

Power supply	19V ÷ 50V DC; 16V ÷ 35V AC or 85 ÷ 260V AC/DC
Input	pulse, fully isolated, with debouncing filter and pulse width control, max. input frequency 50.0 kHz
Display	LED, red, 6 x 9 mm high
Data memory	non-volatile memory, EEPROM type

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STI-94

STI-94 ratemeters are the board-type ratemeters designed to control rotational speed (from 1,5 to 50000 rev/min) or its inversion (revolution period). Available parameters of divider and... more

Power supply	19V ÷ 50V DC; 16V ÷ 35V AC or 85 ÷ 260V AC/DC
Input	pulse, fully isolated, with debouncing filter and pulse width control, max. input frequency 50.0 kHz
Display	LED, red (green on request), 6 x 13 mm high
Data memory	non-volatile memory, EEPROM type

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STI-N118

STI-N118 ratemeters in tight, wall mounted case (IP 65), are designed to control rotational speed (from 1,5 to 50000 rev/min) or its inversion (revolution period). Available parameters... more

Power supply	230 V AC ± 10%; 110 V AC ± 10%; 24 V DC (non separated from measurement input)
Input	pulse, fully isolated, with debouncing filter and pulse width control, max. input frequency 50.0 kHz
Display	LED, red (green on request), 6 x 13 mm high, with 8-step adjustment of brighness
Data memory	non-volatile memory, EEPROM type

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