Extech Instruments RPM33-NIST User Manual page 11

Measurement Range Specifications
Photo‐Tachometer
Revolutions per
minute
Frequency
Contact‐Tachometer
Revolutions per
minute
Surface Speed
Length
(using circumference
wheel attachment)
Revolutions (counter
for custom sized
wheels)
Frequency
*Note that when RPM is mixed case (rPm) it represents readings >9999 with a resolution of '1' and when it
is upper case (RPM) if represents the range 0.2 to 9999.9 with 0.1 resolution.
Range
2 to 99,999 RPM
0 to 1666 Hz
2 to 19,999 rpm
0 to 2000 meters per
minute
0 to 78,720 inches per
minute
0 to 6560 feet per minute 1 ft/min
0 to 2186 yards per minute 1 yd/min
0.1 to 1000 meters
3.9 to 39,370 inches
0.3 to 3280 feet
0.1 to 1093 yards
0 to 99,9999 Revolutions
0 to 1666 Hz
Resolution
0.1 rpm (2.0 to 9999.9
RPM) 1 rpm (> 9999
rPm)*
1 Hz
0.1 rpm (2.0 to 9999.9
RPM) 1 rpm (> 9999
rPm)*
1 m/min
1 in/min
0.1 meter
0.1 inch up to 9999.9
1 inch > 9999
0.1 inch
0.1 yard
1 revolution (REV)
1 Hz
11
Accuracy
0.05% of reading + 1
digit
0.05% of reading + 1
digit
RPM33-en-EU_V1.3 4/13