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Omron H7ET-N Counter

The Omron H7ET-N Counter is a reliable time counter designed for precise hour and day measurement in industrial equipment. It supports selectable ranges from 0.0 h to 999999.9 h or up to 3999 days 23.9 hours, ensuring flexibility for long-duration monitoring. With a 7-digit LCD, 8.6 mm character height, and zero-suppression, it provides excellent visibility. The unit accepts no-voltage input and features external/manual reset control with a stable 20 ms response. Rated IP66 at the front, it performs reliably in demanding environments. Manufactured by Omron and listed under Omron Counter solutions, this model belongs to the Omron H7ET Series.

BrandOmron
ProductCounters
Model NumberH7ET-N

Omron H7ET-N Counter - Technical Specifications

SpecificationValue
FunctionTime Counter
Input signalCount input, Reset
No-voltage input (Contact input)Short-circuit (ON) impedance: 10 kΩ max. Residual voltage: 0.5 V max. (Actual performance 1.0 V) Open circuit impedance: 750 kΩ min.
Display methodLCD
Display Digits7 digit
External connectionsScrew terminal
Counter Reset systemExternal and manual reset
Input modeNo-voltage input
Display Character height8.6 mm (Black)
Display Zero suppressionEquipped
Time counter rangesIncrement (UP)
counter Time ranges0.0 h to 999999.9 h/0.0 h to 3999 d 23.9 h (selectable)
Time counter Set value read selector±100 ppm (25 ℃)
External/Manual Reset time20 ms
Ambient temperature (Storage)-10 to 55 ℃ (with no freezing or condensation)
Ambient humidity (Operating)25 to 85 %
Dielectric withstand voltageBetween current carrying terminals and exposed non-current carrying metal parts: 1000 VAC 50/60 Hz 1 min
Impulse withstand voltageBetween current carrying terminals and exposed non-current carrying metal parts: 4.5 kV
Noise immunityBetween reset terminals: ±500 V Between timer input terminals: ±500 V square-wave noise by noise simulator (pulse width: 100 ns/1 µs, 1-ns rise)
Static immunity±8 kV (malfunction)
Vibration resistanceBetween current carrying terminals and exposed non-current carrying metal parts: 100 MΩ min. (at 500 VDC)
Shock resistanceDestruction: 300 m/s2, 3 times each in 6 directions Malfunction: 200 m/s2, 3 times each in 6 directions
Degree of protectionCase front: IP66, NEMA 4 (indoors), and UL Type 4X (indoors)
Case colorLight gray (Munsell 5Y7/1)
WeightApprox. 60 g

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