Non-contact Digital Handheld Tachometer (High-speed Type)
HR-6800
A compact handheld Digital Tachometer that measures the rotational speed of high-speed rotating bodies up to 999,990 r/min with high precision and non-contact.
In addition to high-speed rotating bodies such as dental rotary instruments and spindle of false twisting machines in textile machinery, it can also measure the rotational speed of high-speed cutting drills and high-speed motors, which are becoming more common in machine tools, simply by bringing an electromagnetic sensor close to the rotating axis. The shape (irregularities) of the drill teeth allows for non-contact direct reading of r/min by magnetizing general rotating machinery.
The measurement range is extensive, from 100 r/min to 999,990 r/min.
Standard features include both analog output (switchable with monitor output) and pulse output. The analog output can be used for recording with data recorders, the monitor output is for confirming sensor waveforms or for input signals for FFT analyzers, and the pulse output can be used as a tracking analysis signal for FFT analyzers. Additionally, measurement results can be stored in internal memory as a history for up to 20 entries, making it convenient for post-measurement verification and recording.
※ We sincerely apologize, but we kindly ask that customers provide dry batteries.
| measurement target | Dental rotary bodies, fiber rotary bodies, high-speed machine tool rotary bodies * Some parts of the measured rotary body must be magnetized.  |
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| Applicable detectors | MP-5350 dedicated sensor for high-speed applications (sold separately) | |||||||||||||||
| calculation method | Cyclic Calculation Method | |||||||||||||||
| Display Section | LCD display, 5 digits (character height 10.2 mm), with backlight. | |||||||||||||||
| measurement time | 50 ms + within 10 cycles of the input signal | |||||||||||||||
| Display update time | Switchable between 1 s and 0.5 s | |||||||||||||||
| measurement unit | 10 r/min | |||||||||||||||
| Rotational speed measurement range |
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| measurement accuracy | Display value × (±0.02 %) ±1 count *Measurement accuracy relative to the display value |
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| Memory function | Measurement results: Up to 20 data points can be stored in non-volatile memory (retains recorded values even when power is off). | |||||||||||||||
| Peak hold function | Maximum value (MAX), Minimum value (MIN) | |||||||||||||||
| Over range display | When the measurement value exceeds the display range, an over range (ERROR mark) is displayed. | |||||||||||||||
| Rotation upper limit warning function | When the rotational speed exceeds the preset upper limit, the upper limit warning (↑ mark) is displayed. | |||||||||||||||
| trigger function | Adjust using the rotary volume control on the right side of the main body. | |||||||||||||||
| Analog Output | Output Output voltage: 0 to 1 V/0 to full scale (full scale can be set arbitrarily) Conversion method: 10 bit D/A conversion method Linearity: ± 1 %/full scale Output update time: within 50 ms + 1 cycle time (* Please note that there may be a delay of several seconds if the rotation speed is outside the measurement range.) Temperature stability: ±0.05 %/full scale/°C (span & zero) Setting error: ±0.5 %/full scale Load resistance: 100 kΩ or more |
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| monitor output | Analog output for monitoring sensor signals (to be used in switching with the above-mentioned rotational speed analog output) | |||||||||||||||
| Pulse output | One pulse output for each signal detection Output voltage: Hi +4.5 V or higher, Lo +0.5 V or lower Output logic: positive logic Load resistance: 100 kΩ or higher |
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| Operating temperature range | 0 to +40 °C | |||||||||||||||
| Storage Temperature Range | −10 °C to +50 °C | |||||||||||||||
| Operating Humidity Range | 35 to 85 % RH (without condensation) | |||||||||||||||
| Storage Humidity Range | 35 to 85 % RH (without condensation) | |||||||||||||||
| Power Supply | Four AA batteries ※ (1.5 V) or optional dedicated AC adapter PB-7090 | |||||||||||||||
| battery lifespan | Continuous usage time: approximately 13 hours (with backlight OFF), approximately 8 hours (with backlight ON) (using alkaline batteries, at 20 °C) |
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| Battery warning display | When the battery voltage falls below approximately 4.4 V, a warning mark (LOW mark) is displayed. | |||||||||||||||
| Outline Dimensions | 66 (W) × 189.5 (L) × 47.5 (D) mm
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| Weight | Approximately 280 g (body only, including batteries) | |||||||||||||||
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| Detection method | electromagnetic induction method |
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| connection cable | 1 m with attached (BNC connectors on both ends) |
| Operating temperature range | 0 to +40 °C |
| Storage Temperature Range | −10 to +50 °C |
| Vibration resistant (when powered) | 19.6 m/s2 |
| Shock resistant (electrification) | 490 m/s2 |
| Outline Dimensions | 107× Φ 14 mm
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| Weight | Approximately 50 g (detection part only) |
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