The Omron H7ET-NV1-B Counter is a reliable time counter engineered for DC voltage input environments, supporting 4.5 to 30 VDC for simple integration. It offers extended timing ranges up to 999999.9 hours or 3999 days 23.9 hours, suitable for long-term equipment monitoring. Its 7-digit LCD ensures excellent readability, while a 20 ms reset response improves operational control. The IP66-rated front and strong resistance to shock, vibration, and noise deliver durability across harsh industrial applications. Manufactured by Omron and part of Omron Counter offerings, this model belongs to the Omron H7ET Series.
0.0 h to 999999.9 h/0.0 h to 3999 d 23.9 h (selectable)
Time counter Set value read selector
Β±100 ppm (25 β)
External/Manual Reset time
20 ms
Ambient temperature (Storage)
-10 to 55 β (with no freezing or condensation)
Ambient humidity (Operating)
25 to 85 %
Dielectric withstand voltage
Between current carrying terminals and exposed non-current carrying metal parts: 1000 VAC 50/60 Hz 1 min
Impulse withstand voltage
Between current carrying terminals and exposed non-current carrying metal parts: 4.5 kV
Noise immunity
Between reset terminals: Β±600 V
Between backlight power terminals: Β±480 V
Between timer input terminals: Β±600 V
square-wave noise by noise simulator (pulse width: 100 ns/1 Β΅s, 1-ns rise)
