Specifications
General Specifications
Circuit
Exclusive one-chip LSI circuit with crystal time base
4-digit (10,000 count; 0 to 9999) LED display
Display
Measurement unit
RPM (revolutions or rotations per minute) is the speed of the
moving device under test which equals the FPM rate (strobe
flashes per minute)
Operating Temperature 32 to 122oF (0 to 50oC)
Operating Humidity
Power Supply
< 80% RH
110VAC (461830) or 220VAC (461831) 50/60Hz ±10%
<25 watts @ 115V
Power Consumption
Weight
2.2 lbs. (1kg)
Dimensions
8.3 x 4.8 x 4.8" (21 x 12 x 12cm)
Impact resistant plastic with plastic lens and mirrored reflectors
Housing construction
Electrical Specifications
Measurement Range
Resolution
100 to 10,000 RPM/FPM
0.1 (<1000 RPM/FPM)
1 (1000 to 9999 RPM/FPM)
10 (10,000 RPM/FPM)
± (0.05% + 1 digits)
1 second
Accuracy
Sampling Time
Strobe Flash adjust range
LOW: 100 to 1,000 RPM/FPM
HIGH: 1000 to 10,000 RPM/FPM
Xenon lamp
Strobe Flash tube type
Strobe Flash duration
Strobe Flash Energy
Strobe Beam Angle
Strobe Flash Color
60 to 1000 microseconds
4 Watt-Seconds (Joules)
80o
White 6500oK
Notes: Replace the Xenon lamp when readings appear irregular. To prolong the Xenon lamp
life and ensure safe operation, please adhere to the following recommendations.
•
A 30-minute use limit < 3000rpm and 5-minute use limit > 3000rpm exists. Do not use
the instrument for periods longer than specified otherwise damage to the instrument
may result.
•
•
Always permit a 10-minute cool-down between cycles.
Do not touch the Xenon flash tube.
4
Model 461830/461831 Version 2.2 November 2003
EXTECH [ EXTECH INSTRUMENTS CORPORATION. ]
