Datasheet
DIGITAL TACHOMETER
Model : DT-2244, DT-2245, DT-2238
Item Photo/Contact TachometerPhoto Tachometer Contact Tachometer
Model DT-2238 DT-2244 DT-2245
Photo Tachometer
:
5 to 99,999 RPM.
Contact Tachometer
:
5 to 99,999 RPM. 0.5 to 19,999 RPM.
Measurement
Contact Tachometer
:
Surface Speed
:
& Ran
g
e 0.5 to 19,999 RPM. m/min. -
Surface Speed
:
0.05 to 1,999.9 m/min.
m/min. - ft/min. -
0.05 to 1,999.9 m/min. 0.2 to 6,560 ft/min.
ft/min. - inch/min. -
0.2 to 6,560 ft/min. 2 to 78,740 inch/min.
RPM
:
RPM
:
RPM
:
0.1 RPM ( < 1,000 RPM ). 0.1 RPM ( < 1,000 RPM ). 0.1 RPM ( < 1,000 RPM ).
1 RPM ( 1,000 RPM ). 1 RPM ( 1,000 RPM ). 1 RPM ( 1,000 RPM ).
Resolution
m/min.
:
m/min.
:
0.01m/min. ( < 100 m/min. ). 0.01m/min. ( < 100 m/min. )
0.1m/min. ( 100 m/min. ). 0.1m/min. ( 100 m/min. )
ft/min.
:
ft/min.
:
0.1 ft/min. ( < 1,000 ft/mn. ). 0.1 ft/min. ( < 1,000 ft/mn. ).
1 ft/min. ( 1,000 ft/mn. ). 1 ft/min. ( 1,000 ft/mn. ).
inch./min.
:
0.1 inch/min.
( < 1000 inch/min. ).
1 inch/min.
( 1000 inch/min. ).
Display 5 di
g
its, 10 mm ( 0.4" ) LCD. 5 di
g
its, 10 mm ( 0.4" ) LCD. 5 di
g
its, 10 mm ( 0.4" ) LCD.
Accuracy ± ( 0.05% + 1 di
g
it ). ± ( 0.05% + 1 di
g
it ). ± ( 0.05% + 1 di
g
it ).
T
ime base Quartz crystal. Quartz crystal. Quartz crystal.
Circuit Exclusive one-chip of Exclusive one-chip of Exclusive one-chip of
microcomputer LSI circuit. microcomputer LSI circuit. microcomputer LSI circuit.
Operatin
g
0 to 50 ( 32 to 122 ).℃℉0 to 50 ( 32 to 122 ).℃℉0 to 50 ( 32 to 122 ).℃℉
T
emperature
Operatin
g
Less than 80% R.H. Less than 80% R.H. Less than 80% R.H.
Humidity
Memory Last/Max./Min. value. Last/Max./Min. value. Last/Max./Min. value.
Battery 4 x 1.5V AA ( UM-3 ) 4 x 1.5V AA ( UM-3 ) 4 x 1.5V AA ( UM-3 )
batteries. batteries. batteries.
Power
Photo type
:
Approx. DC 153 mA. Approx. DC 10 mA.
Consumption Approx. DC 153 mA.
Contact type
:
Approx. DC 10 mA.
Size 195 x 61 x 38.5 mm. 165 x 61 x 38.5 mm. 195 x 61 x 38.5 mm.
( 7.6 x 2.4 x 1.5 inch ). ( 6.5 x 2.4 x 1.5 inch ). ( 7.6 x 2.4 x 1.5 inch )
Wei
g
ht 280
g
( 0.61 LB ) 235
g
( 0.52 LB ) 280
g
( 0.61 LB )
* includin
g
battery. * includin
g
battery. * includin
g
battery.
Carryin
g
case...............
.
1 PC. Carryin
g
case...............
.
1 PC. Carryin
g
case...............
.
1 PC.
Reflectin
g
tape marks Reflectin
g
tape marks RPM adapter ( CONE )
Accessories ( 600 mm )..................
.
1 PC. ( 600 mm )..................
.
1 PC. ...............................1 PC.
Included RPM adapter ( CONE ) Operation manual......... 1 PC. RPM adapter ( FUNEL )
...............................1 PC. ...............................1 PC.
RPM adapter ( FUNEL ) Surface speed test wheel
...............................1 PC. ...............................1 PC.
Surface speed test wheel Operation manual......... 1 PC.
...............................1 PC.
Operation manual......... 1 PC.
DT-2238 had followin
g
countries patent & patent pendin
g
:
Patent USA - 4,823,080 GERMANY - G9015492.4, G8708922.0
T
AIWAN - 45478 & other countries patent pendin
g
.
* Appearance and specifications listed in this brochure are subject to change without notice. 0609-DT2244