1.0
INTRODUCTION
The CDT-2000 Digital Tachometer combines the best features of contact
and non-contact tachometers for measuring rotational speed, surface speed
and length.
When used in the
non-conta
ct operating mode, a small piece of reflective
tape is applied to the rotating element (wheel, shaft, etc.). The CDT-2000
uses a visible LED light source to accurately measure the RPM from up to
14” (350 mm) away from the “target”. In the
contact
operating mode, the
speed is sensed using one of the contact adapters supplied with the instru-
ment.
In applications where surface speed or linear speeds are to be measured,
the universal wheel is used for direct readout of feet/min, meters/min or
inches/min, as selected by the user. The CDT-2000 can also be used to
measure the accumulated total of continuously running material such as
paper, wire/yarn being wound on a spool, or for checking the calibration
of on-line counters and totalizer devices.
1.1 Applications
2
Contact RPM
— Used to measure the speed of rotating
motors, shafts, pulleys, gears, etc.
Non-Contact RPM
— Used when contact measurement
is not possible due to access space restrictions, safety
concerns, etc.
Linear Speed and Length
— Used to measure the
linear speed or length of moving surfaces, such as
conveyor belts, printed materials, webs of fabric
or paper, etc.
8.0
MEMORY SYSTEM
The CDT-2000 is supplied with a built-in memory
system which stores the
last
measurement,
the
maximum
measurement and the
minimum
measurement which occurred during a measuring
period. A measuring period is the interval of time
while the Measure key is depressed. The stored
values are retained in memory even when the
power turns off (auto power off). To recall the
stored values after auto power off:
1. Press the Measure key to turn the power on
2. Press the MEM key to recall the desired value
The Memory key accesses the CDT-2000’s built-in memory.
Each time the MEM key is pressed the values stored in
memory will be recalled to the display in the sequence listed below. The
appropriate memory indicator will be shown together with the recalled
value on the display.
Note:
When the batteries are removed, the values stored in memory will
be lost.
11
8.8.8.8.8
max min mem
rpm
m/min
ft/min
in/min
mem
mem
max
mem
min
mem
max
mem
min
mem
MEM
MAX
MIN
LAST
MEM
min
rpm
max
mem
t
