• Easy, Flexible Operation

    View data on both the large backlit LCD display and from iOS® or Android™ mobile devices using the ExView app via Bluetooth.

  • Standalone Capture and Display

    Take non-contact RPM measurements of rotating objects up to 500 mm (1.64 ft) and count up to 99,000; freeze the display with ‘data hold’ feature.

  • Portable Collection, Analysis, and Reporting

    Export .CSV data; create and send PDF reports including photos of the measurement location taken with a connected smartphone or tablet camera.

General Specifications
Measurement Angle
±30° from perpendicular
Measurement Distance
50 to 500 mm
Revolution Count (Photo)
0 to 99999
Revolution Count (Photo) Basic Accuracy
±2 digits
Revolution Count (Photo) Max Resolution
Rotation Speed [Photo]
10 to 99999 rpm
Rotation Speed [Photo] Basic Accuracy
Rotation Speed [Photo] Max Resolution
0.1 rpm (<9999.9 rpm), 1 rpm (≥10000 rpm)
Sampling Time (Photo)
1 s (>120 rpm)
Sensor Type
Photodiode and laser tube
Wireless Connectivity
Bluetooth® (via ExView iOS/Android mobile app)
Wireless Transmission Range
up to 90 m line of sight
Additional Details
CE, FCC, UKCA, IEC60825-1:2014 CLASS 3R
4.7 × 2.1 × 1.1 in (120 × 53 × 28 mm)
5-digit (99999-count) backlit segment LCD display
Operating Conditions
32 to 104°F (0 to 40°C),≤80% RH
3 × AAA (1.5V) batteries
2 years
2.9 oz (81.6 g)
Related Documents

Extech RPM250W