Dwyer TAC-L Series Portable Digital Tachometer Instruction Manual
- June 4, 2024
- Dwyer
Table of Contents
TAC-L Series Portable Digital Tachometer
Instruction Manual
TAC-L Series Portable Digital Tachometer
Model TAC-L Portable Digital Tachometer measures rotational speed either
by contacting a rotatable head to the shaft of the object, or using photo
sensor to detect the reflections from the laser. The laser target can record
from a distance of up to 20 inches and gives a more accurate measurement than
LED targeting. Model TAC-L includes a large LCD with a backlight for use in
dark areas. This tachometer is made of strong, lightweight ABS plastic
housing, which is designed to comfortably fit in the hand of the user.
Supplied with this model are 3 contact rotational heads, a contact surface
wheel, and a protective carrying case.
PRODUCT OVERVIEW
| A. Surface speed wheel | B. Contact test device |
|---|---|
| C. Contact measuring device | D. Measuring button |
| E. Function switch | F. Memory button |
| G. Display | H. Battery cover |
NON-CONTACT MEASURING (RPM)
- Apply a reflective mark to the object being measured.
- Slide the function switch to “rpm photo” and remove the cap.
- Depress the measuring button and align the visible light beam with the applied target. Verify that the monitor indicator lights when the target aligns with the beam.
NOTICE
In the case of measuring low RPM values with the non-contact laser, it is
suggested that the user attach more reflective marks an average distance apart
on the object, then measure as above, giving a more accurate measurement. The
user then must divide the reading shown by the number of reflective marks to
find the true RPM.
SPECIFICATIONS
Accuracy : ±(0.05% + 1 digit).
Display: Backlit LCD; 5 digits, 7 segments, 0.7˝ (1.8 cm) H.
Range: Non-contact (RPM): 2.5 to 99,999 RPM; Contact (RPM): 0.5 to 19,999
RPM; Surface speed (m/min): 0.05 to 1999.9 m/min.
Resolution: Non-contact (RPM): 0.1 RPM (2.5 to 999.9 RPM), 1 RPM (1000 to
99,999 RPM); Contact (RPM): 0.1 RPM (0.5 to 999.9 RPM), 1 RPM (1000 to 19,999
RPM); Surface Speed (m/min): 0.01 m/min (0.05 to 99.99 m/min), 0.1 m/min
(100.0 to 1999.9 m/min).
Non-contact Measuring Distance Range: 2 to 20˝ (5 to 50 cm).
Sampling Time: 0.8 s.
Temperature Limits: 32 to 122°F (0 to 50°C).
Power Requirements: (4) 1.5 V AA alkaline batteries, not provided, user
replaceable.
Weight: 1.37 lb (.620 kg).
CONTACT MEASURING (RPM)
-
Install the contact device, with the headpiece that works best for the object being measured.
The large tapered and pillar rubber pieces are more suitable for low speed. The small tapered piece is more suitable for high speed.
NOTICE
-
Slide the function switch to “rpm contact.”
-
Lightly press the rpm adapter against the center hole of the rotating shaft.
-
Depress the measuring button, being sure to keep the alignment straight.
-
Release the measuring button when the display reading stabilizes.
SURFACE SPEED MEASURING (M/MIN)
- Install the surface speed ring attachment.
- Slide the function switch “m/min contact.”
- Lightly press the speed ring to the object being measured.
- Depress the measuring button, being sure to keep the alignment straight.
- Release the measuring button when the display reading stabilizes.
MEMORY
The memory button is able to recall the records from the last time the
measuring button was pressed. Press and hold the memory button each time. The
first time the button is pressed, the maximum recorded value is shown,
alternated with “UP.” See Figure 2.
NOTICE
Recorded data is reset every time the measuring button is pressed.
The second time the button is
pressed, the minimum recorded value is shown, alternated with “DN.” See Figure
3.
The third time the button is pressed, the last recorded value is shown, alternated with “LA.” See Figure 4.
The fourth time the button is
pressed, there will be a countdown from 20 to 1. After this, the display will
show “An **.” The number that is displayed after “An” is the number of seconds
that the tachometer was recording during the last session. In the case of
Figure 5, the tachometer was recorded for 64 seconds.
Each time the button is pressed after that, it will show the recorded value for each second it was recording. After having gone through all of the values, pressing the button will start from the beginning with the maximum measurement.
REPLACING THE BATTERIES
When the batteries need to be replaced, the battery icon will appear in the
bottom left corner of the display. To replace the batteries, slide the battery
cover off of the tachometer and remove the 4 batteries. Install the new
batteries in the same position as the previous ones.
MAINTENANCE/REPAIR
Upon final installation of the Model TAC-L, no routine maintenance is required
besides changing the batteries. The Model TAC-L is not fielded serviceable and
should be returned if repair is needed. Field repair should not be attempted
and may void the warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sale” in our catalog and on our website.
Contact customer service to receive a Return Goods Authorization number before
shipping the
product back for repair. Be sure to include a brief description of the problem
plus any additional application notes.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
FR# 444140-00 Rev. 2
Phone: 219-879-8000
Fax: 219-872-9057
www.dwyer-inst.com
e-mail: info@dwyermail.com
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