Datasheet

PHOTO/CONTACT TACHOMETER
Model : DT-2238
FEATURES
* World's patent, Multi-functions, one instrument TACH. ( RPM, m/min., ft/min. ).
* Wide measurin
g
ran
g
e from 0.5 to 100,000 RPM.
* 0.1 RPM resolution for the measured value < 1000 RPM.
* The last value, max., value, min. value will be stored into the memory
automatically & can be obtained by pressin
g
Memory Call Button.
*Hi
g
h visible LCD display
g
ives RPM readin
g
exactly with no
g
uessin
g
or errors & saves
battery ener
g
y.
* This tachometer used the exclusive one chip MICRO-COMPUTER LSI circuit & crystal
time base, offer the hi
g
h accurate measurement & fast samplin
g
time.
* The use of durable, lon
g
lastin
g
components, includin
g
a stron
g
, li
g
ht wei
g
ht ABS
plastic housin
g
, assures almost maintenance free performance for many years.
* The housin
g
cabinet has been carefully shaped to fit comfortable in either hand.
SPECIFICATIONS
Display 5 di
g
its, 10 mm(0.4") LCD(Liquid Crystal Display), with
function annunciation.
Measurement PHOTO TACH. : 5 to 99,999 RPM.
& Ran
g
e CONTACT TACH. : 0.5 to 19,999 RPM.
SURFACE SPEED ( m/min. ) :
m/min.- 0.05 to 1,999.9 m/min.
ft/min.- 0.2 to 6,560 ft/min.
Resolution RPM 0.1 RPM ( < 1,000 RPM ).
1 RPM ( 1000 RPM ).≧
m/min. 0.01 m/min ( < 100 m/min. )
0.1 m/min ( 100 m/min. )≧
ft/min. 0.1 ft/min. ( < 1,000 ft/min. )
1 ft/min. ( 1,000 ft/min. )≧
Accuracy RPM : ± ( 0.05% + 1 di
g
it ).
Surface speed : ± ( 2% + 1 di
g
it )
*
If the circumference size of the surface test wheel is 10 c
m
exactly.
Time base Quartz crystal, 4.194 MHz.
Circuit Exclusive one-chip of microcomputer LSI circuit.
Operatin
g
Temp. 0- 50 ( 32 - 122 ).℃℉
Operatin
g
Less than 80% R.H.
Humidity
Memory Last, Max. & Min. value.
Battery 4 x 1.5V AA ( UM-3 ) battery.
Power Photo type Approx. DC 153 mA.
Consumption Contact type Approx. DC 10 mA.
Size 195 x 61 x 38.5 mm ( 7.6 x 2.4 x 1.5 inch )
Wei
g
ht 280
g
( 0.61 LB )/includin
g
battery.
Accessories Carryin
g
case...................................................
.
1 PC.
Included Reflectin
g
tape marks ( 600 mm )......................1 PC.
RPM adapter ( CONE )......................................
.
1 PC.
RPM adapter ( FUNNEL )................................... 1 PC.
Surface speed test wheel..................................
.
1 PC.
Operation manual............................................. 1 PC.
* Appearance and specifications listed in this brochure are subject to change without notice. 0608-DT2238