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Omron H7ET-N-B Counter
The Omron H7ET-N-B Counter is a dependable time counter suitable for tracking long-duration operating hours in machines and panels. It offers flexible time ranges up to 999999.9 hours or 3999 days 23.9 hours, supporting precise incremental measurement. Its 7-digit LCD with 8.6 mm black characters ensures clear readability, while external and manual reset options simplify operation. With stable no-voltage input compatibility and a 20 ms response, it maintains reliable performance. Built with IP66 front protection and strong resistance to noise, vibration, and shock, it suits harsh environments. Manufactured by Omron and part of the Omron Counter lineup, this model is included in the H7ET-N Series.
| Brand | Omron |
| Product | Counters |
| Model Number | H7ET-N-B |
Omron H7ET-N-B Counter - Technical Specifications
| Specification | Value |
|---|---|
| Function | Time Counter |
| Input signal | Count input, Reset |
| No-voltage input (Contact inputοΌ | Short-circuit (ON) impedance: 10 kΞ© max. Residual voltage: 0.5 V max. (Actual performance 1.0 V) Open circuit impedance: 750 kΞ© min. |
| Display method | LCD |
| Display Digits | 7 digit |
| External connections | Screw terminal |
| Counter Reset system | External and manual reset |
| Input mode | No-voltage input |
| Display Character height | 8.6 mm (Black) |
| Display Zero suppression | Equipped |
| Time counter ranges | Increment (UP) |
| counter Time ranges | 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±500 V Between timer input terminals: Β±500 V square-wave noise by noise simulator (pulse width: 100 ns/1 Β΅s, 1-ns rise) |
| Static immunity | Β±8 kV (malfunction) |
| Vibration resistance | Between current carrying terminals and exposed non-current carrying metal parts: 100 MΞ© min. (at 500 VDC) |
| Shock resistance | Destruction: 300 m/s2, 3 times each in 6 directions Malfunction: 200 m/s2, 3 times each in 6 directions |
| Degree of protection | Case front: IP66, NEMA 4 (indoors), and UL Type 4X (indoors) |
| Case color | Black (Munsell N1.5) |
| Weight | Approx. 60 g |
