Product overview: The 931 tachometer is a handheld tachometer that accurately measures revolutions per minute (RPM) or surface speed and distance. This tachometer integrates two kinds of speed measuring functions of contact type and non-contact type. "infrared beam function can be used for non-contact speed measuring; Contact speed measurements may be made using a connection adapter and an optional tachometer head. "The storage function allows the storage of readings (MAX), minimum readings (MIN), average readings (AV) and readings. Optical (non-contact) measurement speed: 1 to 99999 RPM Contact measurement speed: 1 to 19999 RPM Accuracy: & plun; 0.02% reading + 1 word Optical sensing distance: 500mm Product features: Compact and easy to hold Easy switching between contact and non-contact measurement modes Different speed heads and speeds are suitable for different measuring situations Values/min/mean and readings Technical indicators:
Range
Optical (non-contact) measurement of 1 to 99999 revolutions per minute
Contact measurement 1 to 19999 RPM
Precision
& plun; 0.02% reading 1 word
Sensing distance (optics)
12 bits
Battery type
(2) 1.5 V LR6 (alkaline) 5 battery
Battery life
About 40 hours
Working temperature
0 oC to +50 oC(32 oF to 122 oF)
Storage temperature
-20 oC to +70 oC(0 oF to 160 oF)
Weight
250 g (0.55 lb)
Size
175 x 60 x 28 mm (7 x 2.5 x 1 in)
Product overview: The 931 tachometer is a handheld tachometer that accurately measures revolutions per minute (RPM) or surface speed and distance. This tachometer integrates two kinds of speed measuring functions of contact type and non-contact type. "infrared beam function can be used for non-contact speed measuring; Contact speed measurements may be made using a connection adapter and an optional tachometer head. "The storage function allows the storage of readings (MAX), minimum readings (MIN), average readings (AV) and readings. Optical (non-contact) measurement speed: 1 to 99999 RPM Contact measurement speed: 1 to 19999 RPM Accuracy: & plun; 0.02% reading + 1 word Optical sensing distance: 500mm