Non-Contact Mode
The following readings are stored in memory for 5 minutes after
release of the power switch:
• Last reading
• Maximum reading
• Minimum reading
These readings can be recalled by pressing the memory switch.
Ten extra readings can also be captured, stored, then recalled
using the memory switch - simply press the memory switch each
time a reading needs to be stored while the tachometer is in use.
Contact Mode (Rate Functions)
When the rate functions are selected (mPM, YPM, FPM and
IPM), the memory store and recall functions are accomplished
exactly as noted above.
Contact Mode (Length Functions)
When the counting functions are selected, the memory store and
recall functions are accomplished in the same manner as the non-
contact mode, the only exception being the maximum and
minimum readings (they do not exist).
To clear the memory completely (for all functions), press the
memory switch for approximately 6 seconds until the display
shows CCCCC, then release the switch.
Memory Recall
Place selector switch in the proper position. Using the 200L
adapter and 6” master wheel, the following industrial units of
measurement are achieved:
Low battery voltage is indicated by flashing LOW BAT on the
display. Remove end cover by using a coin or appropriate
screwdriver and replace both batteries. Please ensure proper
polarity.
Battery Replacement
Range and Accuracy
Although the tachometer alone is able to achieve the
above ranges, the master wheel has maximum speed
limitation of 5,000 FPM (for safety reasons)
MODEL
DT-205L
R: REVOLUTIONS
SINGLE RANGE
ACCURACY
RESOLUTION
Non-Contact RPM
6 - 8,300
± 1
(rev./min.)
8,300 - 25,000
± 2
1
25,000 - 99,999
±0.006% of reading ±1digit
(or ±6 RPM max.)
Contact RPM (rev./min.)
0.8 - 9,999.9
±0.6%
0.1
10,000 - 25,000
±0.006% of reading ±1digit
1
(or ±2 RPM max.)
F: FEET
SINGLE RANGE
ACCURACY
RESOLUTION
F/M (feet/min.)
0.4 - 9,999.9
± 0.6
0.1
10,000 - 12,500
± 1
1
FT (feet)
0.10 - 999.99
0.01
1,000.0 - 9,999.9
0.1
10,000 - 99,999
1
Y: YARDS
SINGLE RANGE
ACCURACY
RESOLUTION
Y/M (yards/min.)
0.13 - 999.99
± 0.06
0.01
1,000.0 - 4,167.0
± 0.3
0.1
YRd (length)
0.02 - 999.99
0.01
1,000.0 - 9,999.9
0.1
10,000 - 99,999
1
I: INCHES
SINGLE RANGE
ACCURACY
RESOLUTION
I/M (inches/min.)
5 - 99,999
±0.006% of reading ±1digit
1
(or ±6 RPM max.)
IN (length)
1.0 - 9,999.9
0.1
10,000 - 99,999
1
m: METERS
SINGLE RANGE
ACCURACY
RESOLUTION
m/M (meters/min.)
0.11 - 999.99
± 0.06
0.01
1,000.0 - 3,810.0
± 0.3
0.1
m (length)
0.02 - 999.99
0.01
1,000.0 - 9,999.9
0.1
10,000 - 99,999
1
NOTE: When using the 6” master wheel, accuracy can be
affected as much as 0.3% of reading
3