Cojali jaltest tools JT2008 Betriebshandbuch - Seite 2

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Cojali jaltest tools JT2008 Betriebshandbuch
JT2008
Digital Tachometer
Operating Manual
Measurement Operation
⚠ Warning:
The Time will be off after the HOLD feature is enabled. The time will be
activated again after coming out the HOLD mode.
A. RPM Measurement (see Figure 3)
⚠ Warning:
Do not aim the laser directly at eyes.
To avoid the rotating object from touching the meter and cause any injury
or damage to the meter during the measurement, please keep the meter
more than 50mm away from the tested target.
To carry out RPM measurement, follow
the following procedure:
1.
Attach a piece of reflecting tape to the
object under test.
2.
Position the meter firmly on desired
location. Hold the meter and keep its light
source 50~200mm away from the object
under test.
3.
Press ON/OFF button, the Meter is default to
enter the RPM measurement mode. Point
the Tachometer light source to reflective
tape, The deviation from the ideal right-
angle should not be greater than 30.
4.
The LCD displays the RPM reading
Note:
1.
When measuring RPM, the LCD displays "0.0000" if there is no signal
within 7 seconds.
2.
When the RPM is greater than "99999" the LCD displays OL.
B. Counts
Self-lighted Counts (See Figure 4)
1.
Position the meter firmly on desired location.
Hold the meter and keep its light source
50~200mm away from the targets.
2.
Press the ON/OFF button.
3.
Press the R/C button to select Count mode.
4.
Point he Tachometer light source to the objects
under count. The deviation from the ideal right-
angle should not be greater than 30.
5.
The LED scans the objects under count, counts
the number and displays the total value.
Note:
1.
The object under count must be reflective.
Otherwise Counts feature cannot be used.
Receiving Light Source Outside (See Figure 5)
1.
Position the meter firmly on desired location. Hold
the meter and keep its light source 50~200mm
away from the targets. The deviation from the
ideal right-angle pointing should not be greater
than 30.
2.
Locate the Meter, objects under counts and light
source as shown in Figure 5.
3.
Press ON/OFF button.
4.
Turn the LED off, refer to page 9 point B.
5.
Then press R/C button to select Counts mode.
6.
When the objects under count pass between
the meter and light source, the meter counts the
number and displays the total value.
Note:
1.
Under the count mode, when the count number
is greater than "99999", the Meter will display OL
and hold the data.
2.
Press M/M/A button to zero the counts.
3.
Press ON/OFF to re-start counting.
Specifications
A. General Specifications
Display: 5 digits LCD display. Maximum display: 99999.
Overloading: Display OL.
Low Battery Indication: Display
Sampling Rate: Adjustable from 5ms~255ms.
Figure 3
Sensor Type: Photo diode and laser tube.
Measurement Distance: 50mm ~ 200mm.
Drop Test: one meter.
Power: 4pcs x 1.5V batteries (AA).
Dimensions: 184 x 56 x 34mm.
Weight: Approximate 100g (excluding battery)
B. Environmental Requirements
For indoor use only.
Altitude: 2000m
Temperature and humidity:
Operating:
0ºC~30ºC(≤85% R.H.)
30ºC~40ºC(≤75% R.H.)
40ºC~50ºC(≤45% R.H.)
Storage:
-20ºC~60ºC(≤85% R.H.)
Safety/ Compliances: IEC61010-031, IEC61326, IEC61010-1 pollution degree 2.
Certification:
Accuracy Specifications
Accuracy: ±(a% reading + b digits), calibration per year.
Operating temperature: 23ºC ± 5ºC
Operating humidity: ≤80% R.H.
Temperature Coefficient: 0.1 x (accuracy)/ ºC
Figure 4
A. RPM
Range
10~99.999 r/min
100~999.99 r/min
1000~9999.9 r/min
10000~99999 r/min
Figure 5
.
Resolution
Accuracy
0.001 r/min
0.01 r/min
± (0.04%+2)
0.1 r/min
1 r/min
A. RPM
Range
Resolution
Max. Input Frequency
0~99.999
1 digit
10kHz, Pulse Width 5%
MAINTENANCE
This section provides basic maintenance information including battery
replacement instruction.
⚠ Warning:
Do not attempt to repair or service your Meter unless you are qualified
to do so and have the relevant calibration, performance test, and service
information.
Do not attempt to open the back housing to avoid damaging the Meter or
affecting the accuracy.
A. General Service
Periodically wipe the case with a damp cloth and mild detergent. Do not
use abrasives or solvents.
Turn the Meter off when it is not in use.
Take out the battery when it is not in use for a long time.
Do not use or store the Meter in a place of humidity, high temperature,
explosive, inflammable and strong magnetic field.
B. Replacing the Battery (See Figure 6)
1.
Press ON/OFF to turn the Meter off.
2.
Turn the Meter's front case down.
3.
Remove the screw from the battery door,
and separate the battery door from the case
bottom.
4.
Take out the old batteries and replace with 4 x
1.5V battery (AA).
5.
Insert again the case bottom to the battery
door, and reinstall the screw.
This operating manual is subject to change without notice.
Figure 6