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Omron H7ET-NV-B Counter

The Omron H7ET-NV-B Counter is a dependable time counter tailored for DC voltage input systems, offering measurement ranges up to 999999.9 hours or 3999 days 23.9 hours. Its high-visibility 7-digit LCD with bold black characters allows easy monitoring. Supporting voltage inputs from 4.5 to 30 VDC, it ensures compatibility with a wide range of control signals. With a 20 ms reset response, IP66 front sealing, and strong resistance to noise, shock, and vibration, it suits demanding industrial environments. Manufactured by Omron and available under Omron Counter solutions, this model belongs to the Omron H7ET Series.

BrandOmron
ProductCounters
Model NumberH7ET-NV-B

Omron H7ET-NV-B Counter - Technical Specifications

SpecificationValue
FunctionTime Counter
Input signalCount input, Reset
No-voltage input (Contact input)Hight level: 4.5 to 30 VDC Low level: 0 to 2 VDC (Input resistance Approx. 4.7 kΩ)
Display methodLCD
Display Digits7 digit
External connectionsScrew terminal
Counter Reset systemExternal and manual reset
Input modeVoltage 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: ±600 V Between timer input terminals: ±600 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 colorBlack (Munsell N1.5)
WeightApprox. 60 g

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