Non-contact digital handheld tachometer (high-speed type)
HR-6800
This compact, handheld Digital Tachometer provides high-precision, non-contact measurement of the rotational speed of high-speed rotating bodies up to 999,990 r/min. In addition to high-speed rotating bodies such as dental rotating bodies and spindles in textile machinery, it can also measure the rotational speed of high-speed cutting drills and motors in increasingly common machine tools. Simply bring the electromagnetic sensor close to the rotating shaft; the sensor detects the shape (contours) of drill teeth, and magnetizes general rotating machinery, allowing for easy, non-contact, direct r/min reading. The measurement range is wide, from 100 r/min to 999,990 r/min. It comes standard with both analog output (switchable with monitor output) and pulse output. The analog output is for recording with data recorders, the monitor output is for sensor waveform confirmation and FFT analyzer input signals, and the pulse output is for FFT analyzer tracking analysis signals. Furthermore, up to 20 measurement results can be saved as history in the internal memory, making it convenient for post-measurement review and recording. *We sincerely apologize, but please bring your own batteries.
| Measurement target | Rotating bodies for dental applications, rotating bodies for textile applications, rotating bodies for high-speed machine tools *A portion of the rotating body being measured must be magnetized.  |
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| Compatible detectors | MP-5350 high-speed compatible dedicated sensor (sold separately) | |||||||||||||||
| Arithmetic method | Periodic calculation method | |||||||||||||||
| Display section | LCD display with 5 digits (character height 10.2 mm), backlit. | |||||||||||||||
| Measurement time | Within 50 ms + 10 cycles of input signal time | |||||||||||||||
| Display update time | Switchable between 1 s and 0.5 s. | |||||||||||||||
| Unit of measurement | ×10 r/min | |||||||||||||||
| Rotational speed measurement range |
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| Measurement accuracy | Displayed value × (±0.02%) ± 1 count *Measurement accuracy relative to the displayed value |
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| Memory function | Measurement results: Max. 20 data points are stored in non-volatile memory (recorded values are retained even when the power is off). | |||||||||||||||
| Peak hold function | Maximum value (MAX), minimum value (MIN) | |||||||||||||||
| Overrange display | An overrange (ERROR) mark is displayed when the measured value exceeds the display range. | |||||||||||||||
| Rotation limit warning function | When the rotation speed exceeds a preset upper limit, an upper limit warning (↑ mark) is displayed. | |||||||||||||||
| Trigger function | Adjust using the rotary volume control on the right side of the unit. | |||||||||||||||
| Analog output | Output relative to the displayed rotation speed value 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 if the rotation speed is outside the measurement range, there will be a delay of several seconds.) 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 (switchable with the above rotation speed analog output) | |||||||||||||||
| Pulse output | Output one pulse for each signal detected. Output voltage: Hi +4.5 V or higher, Lo +0.5 V or lower Output logic: Positive logic Load resistance: 100 kΩ or more |
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| Operating temperature range | 0 to +40°C | |||||||||||||||
| Storage temperature range | -10°C to +50°C | |||||||||||||||
| Operating humidity range | 35-85% RH (non-condensing) | |||||||||||||||
| Storage humidity range | 35-85% RH (non-condensing) | |||||||||||||||
| Power supply | 4 x AAA batteries (1.5V), or dedicated AC adapter PB-7090 (optional) | |||||||||||||||
| battery life | 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 | A warning mark (LOW mark) will be displayed when the battery voltage drops below approximately 4.4 V. | |||||||||||||||
| Outline drawings | 66 (W) × 189.5 (L) × 47.5 (D) mm
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| Weight | Approximately 280g (main unit only, including batteries) | |||||||||||||||
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| Detection method | Electromagnetic induction method |
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| Connection cable | 1 m included (with BNC connectors on both ends) |
| Operating temperature range | 0 to +40°C |
| Storage temperature range | -10 to +50°C |
| Vibration resistance (current carrying) | 19.6 m/s2 |
| Shockproof (electrical) | 490 m/s2 |
| Outline drawings | 107 × Φ 14 mm
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| Weight | Approximately 50 g (detector unit only) |
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