




Dwyer Instruments NISTCAL-EL1 | Portable Digital Tachometer NIST
The Model NISTCAL-EL1 Portable Digital Tachometer detects laser reflections using a photo sensor or uses a rotatable head to make contact with the object's shaft to measure rotational speed. Compared to LED aiming, the laser target provides a more accurate measurement and can record up to 20 inches away. The TAC-L model comes with a sizable backlit LCD for usage in dimly lit environments. The robust, lightweight ABS plastic housing of this tachometer is contoured to accommodate the user's hand pleasantly. This model comes with three contact rotating heads, a contact surface wheel, and a carrying box for protection.

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- Specifications
- Features
- Downloads
Accuracy | +/-(0.05% + 1 digit) |
Approvals | CE, RoHS |
Display | Backlit LCD; 5 digits, 7 segments, 0.7" (1.8 cm) H |
Maximum operating temperature | 32 to 122°F (0 to 50°C) |
Power | (4) 1.5 V AA alkaline batteries, not provided, user replaceable |
Range | Non-contact (RPM): 2.5 to 99,999 RPM; Contact (RPM): 0.5 to 19,999 RPM; Surface Speed (m/min): 0.05 to 1999.9 m/min |
Resolution | Non-contact (RPM): 0.1 RPM (2.5 to 999.9 RPM), 1 RPM (1000 to 99,999 RPM); Contact (RPM): 0.1 RPM (0.5 to 999.9 RPM), 1 RPM (1000 to 19,999 RPM); Surface Speed (m/min): 0.01 m/min (0.05 to 99.99 m/min), 0.1 m/min (100.0 to 1999.9 m/min |
Sampling Time | 0.8 s |
Weight | 1.37 lb (.620 kg) |
- Recording is possible with non-contact operation up to 20 inches away.
- Memory function retrieves data from the last power outage.
- A large backlit LCD to improve visibility in low light.
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