Maintenance teams planning replacements for H7ET-N frequently review Omron Photoelectric Sensor, Omron H7Ec N and Omron Photoelectric Sensors E3T Series to prevent downtime, checking availability and compatibility with existing systems.
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 H7ET-N Series.
| Brand | Omron |
| Product Type | Counters |
| Model Number | H7ET-N |
Omron H7ET-N Counter - Technical Specifications
| Specification | Value |
|---|---|
| Function | Time Counter |
| 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) |
| Time counter Reset system | External and manual reset |
| Input signal | Count input, Reset |
| Input method | No-voltage input |
| No-voltage input (No-contact inputοΌ/ Voltage input | Short-circuit (ON) impedance: 10 kΞ© max. Residual voltage: 0.5 V max. (Actual performance 1.0 V) Open circuit impedance: 750 kΞ© min. |
| External/Manual Reset time | 20 ms |
| Display method | LCD |
| Display Digits | 7 digit |
| Display Character height | 8.6 mm (Black) |
| Display Zero suppression | Equipped |
| Ambient temperature (Operating) | -10 to 55 β (with no freezing or condensation) |
| Ambient temperature (Storage) | -25 to 65 β (with no freezing or condensation) |
| Ambient humidity (Operating) | 25 to 85 % |
| Insulation resistance | Between current carrying terminals and exposed non-current carrying metal parts: 100 MΞ© min. (at 500 VDC) |
| 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 | Destruction: 10 to 55 Hz, 0.375 mm single amplitude each in 3 directions for 2 h Malfunction: 10 to 55 Hz, 0.15 mm single amplitude each in 3 directions for 10 min |
| 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) |
| External connection method | Screw terminal |
| Case color | Light gray (Munsell 5Y7/1) |
| Weight | Approx. 60 g |
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