|
|
|
|
DT-2239
100-10000 Flash per
min.
(FPM)/RPM
|
|
|
|
|
|
|
|
DESCRIPTION
|
| The model DT-2239
is a microprocessor circuit design. high accuray, digital
readout, light duty STROBOSCOPE
OR TACHOMETER that is
ideal for inspecting and measuring the speed of moving
gears, fans, centrifuges, pumps, motors and other equipment
used in general industrial maintenance, production, quality
control, laboratories and colleges for demonstrating strobe
action. |
|
|
|
SPECIFICATIONS |
| Display |
0.3" LED, 4
digits |
Test Range Select |
Automation
(if over 9999 FPM/RPM) |
| Stroboscopic
Flash Rate |
100 to 10000
flashes per minute (FPM) |
Tachometer Speed
Rate |
100 to 10000 RPM |
| Accuracy |
+/-1 digit (100
to 5000 FPM/RPM).
+0.05%(over 5000 FPM/RPM). |
Resolution |
1 FPM/RPM (less
than 10000 FPM/RPM)
10 FPM/RPM (over 10000 FPM/RPM) |
| Sampling Time |
1 second |
Power Supply |
AC 110V +/-
15%,50/60Hz |
| Operating Temperature |
0℃ to 50 ℃ |
Operation
Humidity |
Less than 80%
R.H |
| Dimension |
21 x 12 x 12 cm (8.3x4.8x4.8inch) |
Weight |
1Kg (2.2LB) |
| Microprocessor circuit |
This stroboscope/tachometer employs an
exclusive one-chip of microcomputer LSI circuit &
crystal control time-base which results in extraordinary
over a wide, dynamic range. |
Calibration |
crystal time
base and microprocessor circuit, don't necessary take any
external calibration process. |
| Housing |
Compact and Impact plastic
injection case. Plastic lens.
Mirror type rellector. |
|
|
|
FLASH TUBE
SPECIFICATIONS |
| Flash Tube |
Xenon lamp. |
Flash Color |
Xenon white 6500
K∘ |
| Flash Duration |
Approximately 60
to 100 microseconds. |
Flash energy |
4 Watts-seconds
(Joules). |
| Operation duty
Cycle |
For prolong life and safe operation, please adhere to the following duty cycle;
Below 1000 RPM.... 30 Minutes.
Above 3600 RPM... 5 Minutes.
Always allow a 10 minutes off period between cycles. |
| Beam Angle |
80∘ |
| Flash tube replacement |
It is required to change the
flash tube when the instrument start to flash irregularly
at speed of 3600 RPM/FPM or more. |
|
|
|
|
OPERATIONS |
| 1. Preparation |
(a) Plug unit into a properly grounded 11V AC outlet (220V if so equipped).
(b) Turn the power switch to "ON" POSITION.
(c) Determine the range switch to "Low" or "High" position; |
| 2. Checking
Speed |
When checking speed. care must be taken to
insure that the strobe is flashing in unison (one to one)
with the object being monitored. A Stroboscope will also
stop motion at 2:1,3:1,4:1 etc, this is normally referred
to as harmonies. To be sure of unison, turn the dia until
two images appear...this will double the actual speed.
Then lower the flashing rate until a single and stationary
image appears...this is the actual true speed. |
| 3. Checking
Motion |
For motion analysis, simply locate the
actual speed as mentioned above and then turn the dia
slowly up or down. This will give a stow motion effect
allowing complete inspection. |
|
|
|
|
OTHER MODELS |
| DT-2239-2 |
Power supply used the 220ACV +/- 15%,50/60Hz.
Other Specification are exact same as DT-2239 |
| DT-2239-8 |
Power supply
used the external 12V DC rechargeable battery (not
included). |
| PW-126 |
DC 12V power
battery (12V-6AMP-HOUR) & charge system (AC 110V/120V)
|
|
|
