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4 461825-EU-EN v1.6 10/13
MEMORY RECORD AND RECALL
The 461825 can record Maximum, Minimum, and Last Reading for the period of time during which
the Measure Trigger button is held. These stored values can then be read directly on the meter's
display. The memory will automatically erase after approximately 10 seconds of meter inactivity.
Access the memory data immediately after the measurements.
1. Follow the instructions for normal operation.
2. Release the Measurement Trigger button.
3. Immediately press the Memory Recall button once to display the Last Reading taken
during the measurement period. 'LA' will alternately display with the data reading to
indicate 'Last Reading".
4. Release and press the Memory Recall button again to display the Maximum reading
taken during the measurement period. 'UP' will alternately appear with the data reading to
indicate Max. reading.
5. Release and press the Memory Recall button again to display the Minimum reading taken
during the 30 second test period. 'dn' will alternately appear with the data reading to
indicate Min. reading.
Specifications
General Specifications
Circuit Custom LSI microprocessor based design
Display Reversible, 10mm (0.4") 5-digit (99999 count) LCD display
Measurement units RPM (revolutions or rotations per minute)
Memory Recall Records/Recalls Max/Min/Last readings with memory push-button
Operating
Temperature
0 to 50
o
C (32 to 122
o
F)
Operating Humidity < 80% RH
Power Supply Four 1.5V 'AA" batteries (UM-3 or equivalent)
Weight 216g (0.48 lbs.) meter only
Dimensions 207 x 72 x 48mm (8.2 x 2.8 x 1.9")
Accessories Reflective tape and carrying case
Electrical Specifications
Measurement Range 5 to 99,999 RPM for the Tachometer
100 to 100,000 FPM/RPM for the Stroboscope
Resolution 0.1 RPM (<1000 RPM) and 1 RPM (> 1000 RPM)
Accuracy ± (0.1% + 2 digits)
Sampling Time 1 second (> 60 RPM)
Photo Tachometer detection
distance
50 to 150mm (2 to 6") typical
Note: Detection distances up to 300mm (12") are
possible depending upon ambient light
Stroboscopic Flash rate 100 to 100,000 FPM (flashes per minute)
Stroboscopic Flash adjust range Range A: 100 to 1,000 FPM
Range B: 1000 to 10,000 FPM
Range C: 10,000 to 100,000 FPM
Stroboscopic Flash tube type High efficiency LED lamp
Stroboscopic Flash duration 60 to 1000 microseconds (approx. 16% of period)
Stroboscopic Flash Color Orange
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