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Extech
Model 461891 Contact Tachometer
Measures from 0.5 to 19999 RPM plus linear surface speeds
- Measures
from 0.5 to 19999 RPM plus linear surface speeds
- Simple
Operation. Turn on, contact rotating object with sensor tip,
allow reading to stabilize (approx 2 seconds), and read RPM
with excellent precision. Pressing Memory recalls precision.
Pre
- Autoranging
with 0.05% RPM accuracy of full scale. Achieve 0.1 RPM resolution
from 0.5 to 999.9 RPM and 1 RPM resolution at higher ranges
up to 19999 RPM. (See 461891 specifications on chart
- Linear
surface speeds in Ft/min or M/min. Includes an attachable
surface wheel which enables tachometer to read surface measurements
of moving webs or other linear moving objects.
- Complete
with cone, RPM sensor tip, surface speed wheel, four 1.5 volt
AA batteries, and carrying case.
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 |
| Specifications
for Photo, Contact, and Combination Tachometers |
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|
| |
Photo
|
Contact
|
Combined
Photo/Contact
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| Part
Number: |
461893
|
461891
|
461895
|
| Range
- RPM: |
5-99,999
|
0.5-20,000
|
5-99,999
(Photo)
0.5-20,000 (Contact)
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| Surface
Speed: |
|
0.2
to 6560 Ft/min
|
0.2
to 6560 Ft/min
|
| |
|
0.05
to 1999.9m/min
|
0.05
to 1999.9m/min
|
| Accuracy:
(All models) |
±(0.05%rdg
+1d)
|
|
|
| Resolution:
(All models) |
0.1
RPM (0.5 to 999.9RPM)
|
1
RPM >1000 RPM
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|
| Sampling
Time: |
PHOTO:
1 Sec > 60 RPM; CONTACT: 1 Sec > 6 RPM
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|
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| Dimensions: |
6.7x2.8x1.5
(170x27x37mm)
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8.5x2.6x1.5
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| Weight: |
8.8
oz (250 g)
|
9.2
oz (260 g)
|
10.6
oz (300 g)
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