Function Description - Conrad Electronic DT 2 L/k Bedienungsanleitung

B Taking Measurements
Please proceed as follows:
Set the selector to the desired mode. "PHOTO", "CONTACT",
"m/min." or "ft/min.".
a) during contactless measuring, hold the measuring instrument
with the button activated in such a way that the laser point hits the
reflective tag. Read the measured value.
b) During contact measuring you will need a direct contact between
the two conical (rubber) adapters and the revolving parts of a
machine. Hold the mounted rubber adapter close to the end of the
shaft to be measured. Read the measured value.
c) During contact measuring of belt speed, carefully touch the belt
you want to measure with the friction wheel, keep the button pres-
sed and read the measured value.
d) You can then read the recorded values with the "MEMORY" but-
ton. Proceed as follows:
1. Press the key once: measured value of the highest number of
revolutions/belt speed, then the symbol "UP"
2. Press the key twice: measured value of the lowest number of
revolutions/belt speed, then the symbol "dn"
3. Press the key three times: last measured value of the number
of revolutions/belt speed, then the symbol "LA".
Warning!
Every new measuring automatically cancels/over-
writes the old values.
Disposal
If the Manual R.P.M. Counter DT2L does not function any more alt-
hough it has an intact power supply (4 x 1.5 V mignon batteries) and
cannot be repaired any more it has to disposed of in accordance
with the valid legal requirements.
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- If there is room to believe that safe operation has become impos-
sible, put the system out of operation and secure it against any
unintended operation. Safe operation must be presumed to be no
longer possible, if
- the product exhibits visible damage
- the does not work any more
- after it was stored under unfavourable conditions for a longer
period of time or
- the product was exposed to extraordinary stress caused by
transport.
- Never use the product immediately after it has been brought from
a cold into a warm room. Condensation water that forms might
destroy your measuring instrument. Leave the device switched
off and wait until it has reached room temperature.

Function Description

With the Manual R.P.M. Counter DT2L with integrated laser you can
determine the number of revolutions of revolving machines such as
fans, drives etc. quickly, accurately and contactless. Thanks to the
integrated laser (relatively) accurate point measurements can be
made. The measured r.p.m. is displayed on an energy-saving 5-digit
LCD (liquid crystal display). There are three adapters for contact
measurements:
• an external cone for concave shaft ends,
• an internal cone for shaft journals and
• a friction wheel for measuring belt speeds (ribbon saws, belt grin-
ders, V-belt drives, conveyor belts etc.)
Contactless measuring functions with a photo sensor. The measu-
ring distance is up to 1 m. Power supply is with four 1.5 V mignon
batteries. The Manual R.P.M. Counter can be used universally, e.g.
for professional (not industrial) private, or educational purposes etc.
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