Dwyer Instruments TAC3 series User manual

DWYER INSTRUMENTS, INC.
P.O. BOX 373 •MICHIGAN CITY, INDIANA 46361 U.S.A.
Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [email protected]
Series TAC3 Pocket Tachometer
Specifications - Installation and
Operating Instructions

Diode Laser
Max. output power: <1 milliwatt
Wavelength: 650 nanometers (visible light)
Min. divergence: 1.0 milliradian
Output: Continuous (CW)
Laser hazard classification: Class 2
Contact info: www.dwyer-inst.com
Country of Origin: USA
SAFEGUARDS AND PRECAUTIONS
Laser hazards
• Eye injury from beam - Do not look into the direct or reflected beam; can cause eye injury
up to 25 ft (7.5 m) away.
• Visual interference (glare) with pilots and drivers - Interferes with vision up to 525 ft (160
m) away. Can be a distraction up to 1 mile (1.6 km) away. NEVER point any laser towards
aircraft or vehicles; it is unsafe and illegal.
Safe use guidance
Class 2 lasers are considered safe for
accidental eye exposure. Do not look or
stare into beam. Do not aim at aircraft.
This is not a toy. Always supervise children.
Read and follow all instructions in this manual carefully, and retain
this manual for future reference.
Do not use this instrument in any manner inconsistent with these operating
instructions or under any conditions that exceed the environmental
specifications stated.
This instrument is not user serviceable. For technical assistance, contact the
sales organization from which you purchased the product.
In order to comply with EU Directive 2012/19/EU on Waste Electrical and
Electronic Equipment (WEEE): This product may contain material which could
be hazardous to human health and the environment. DO NOT DISPOSE of this
product as unsorted municipal waste. This product needs to be RECYCLED in
accordance with local regulations, contact your local authorities for more information. This
product may be returnable to your distributor for recycling - contact the distributor for details.

TABLE OF CONTENTS
TABLE OF CONTENTS
1.0 OVERVIEW..............................................................................1
2.0 FEATURE LOCATIONS ..........................................................1
3.0 LCD DISPLAY SYMBOLS.......................................................2
4.0 TAC3 SPECIFICATIONS.........................................................3
5.0 INPUT / OUTPUT ....................................................................7
6.0 PREPARATION FOR MEASUREMENT .................................8
6.1 Non-Contact Preparation..............................................8
6.2 Direct Contact Preparation...........................................8
6.3 Connecting External Sensors ......................................9
7.0 TAKING MEASUREMENTS..................................................10
7.1 Non-Contact Measurements ......................................10
7.2 Direct Contact Measurements ...................................10
8.0 TACHometer Mode...............................................................11
8.1 TACHometer Setup......................................................11
8.2 TACHometer Operation...............................................13
9.0 RATE Mode...........................................................................13
9.1 RATE Setup..................................................................14
9.2 RATE Operation...........................................................16
10.0 TOTALizer Mode...................................................................17
10.1 TOTALizer Setup .........................................................17
10.2 TOTALizer Operation ..................................................20
11.0 TIMER Mode .........................................................................21
11.1 TIMER Setup ................................................................21
11.2 TIMER Operation .........................................................22
12.0 BATTERIES...........................................................................23
13.0 CLEANING ............................................................................24
14.0 OPTIONS /ACCESSORIES...................................................24

1
1.0 OVERVIEW
The Model TAC3 is a 32 function tachometer/ratemeter, totalizer/counter, and
timer. It is programmable to read in English or Metric units. An input socket
accepts remote sensing devices and an output socket allows for pulse output
to external indicating devices. The Model TAC3 can be tripod mounted and
“Locked-On” for accurate and continuous operation. This tachometer also
stores minimum, maximum and last measurement in memory.
2.0 FEATURE LOCATIONS
Min / Scroll
Down arrow
Start / Reset button
Max / Scroll Up
arrow
LCD display
Menu / Select
and Lock-on
button
Battery compartment
AVOID EXPOSURE - LASER BEAM IS
EMITTED FROM THIS APERTURE
Output socket
Input socket
Belt clip
Tripod mounting bushing
(underside)

2
3.0 LCD DISPLAY SYMBOLS
On Target Indicator. Blinks on whenever there is an input
signal. Will appear to be solid on at higher frequencies.
Low Battery icon. Indicates that the batteries are low and need
to be replaced.
Times Ten icon. Indicates that the value shown is ten times
that which is displayed.
Laser Indicator. Red laser is on when this indicator is
illuminated.
Lock icon. Indicates that the unit is “Locked” on and making
continuous measurements (Lock mode).

3
4.0 TAC3 SPECIFICATIONS
Laser Specifications:
Classification: Class 2 (per IEC 60825-1:2014)
This product complies with IEC 60825-1 Ed.3 and 21 CFR 1040.10
and 1040.11 except for deviations pursuant to Laser Notice No. 50 of
June 2007.
Maximum Laser Output: <1mW
Pulse Duration: Continuous
Laser Wavelength: 650 nm
Beam Divergence: > 1.0 mrad
Beam Diameter: 4 x 7 mm typical at 2 meters
Laser Diode Life: 8,000operatinghoursMTBF(1yearwarranty)
Non-Contact Specifications:
Ranges: RPM 5 – 200,000
RPS 0.084 – 3,333.3
RPH 300-999,990
Resolution: Fixed: 1 (10 above 99,999)
Auto-ranging: 0.001 to 1.0 (10 above 99,999)
Accuracy: ±0.01% of reading or resolution limit
Operating Range: up to 25 feet (7.62 m) or up to 70 degrees off
perpendicular to TAC-5 tape target
Contact Specifications using optional Remote Contact Assembly:
Range: Contact Tips: 0.5 to 20,000 RPM
10 cm / 12-inch Wheel: 0.5 to 12,000 RPM
Resolution: Fixed: 1 (10 above 99,999)
Auto-ranging: 0.001 to 1.0 (10 above 99,999)

Contact Specifications (continued):
Accuracy: Revs: ±0.05% of reading (RPM) or resolution limit
(with no slippage)
Linear: ±0.5% of reading or resolution limit (with no
slippage)
Contact Measurements Ranges:
TACHOMETER:
Revolutions per Minute (RPM) 0.5 to 20,000 RPM
Revolutions per Second (RPS) 0.0833 to 333.33 RPS
Revolution per Hour (RPH) 30 to 999,990 RPH
RATES: Wheel Circumference:
Inches per Second 10 cm: 0.033 to 1312.3 IPS
12 in: 0.100 to 2,400.0 IPS
Inches per Minute 10 cm: 1.969 to 78,740 IPM
12 in: 6.000 to 144,000 IPM
Inches per Hour 10 cm: 118.11 to 999,990 IPH
12 in: 360.00 to 999,990 IPH
Feet per Second 10 cm: 0.003 to 109.36 FT/S
12 in: 0.009 to 200.00 FT/S
Feet per Minute 10 cm: 0.164 to 6,561.7 FT/M
12 in: 0.500 to 12,000 FT/M
Feet per Hour 10 cm: 9.843 to 393,700 FT/H
12 in: 30.000 to 720,000 FT/H
Yards per Second 10 cm: 0.001 to 36.453 YPS
12 in: 0.003 to 66.667 YPS
Yards per Minute 10 cm: 0.055 to 2,187.2 YPM
12 in: 0.167 to 4,000.0 YPM
4

Contact Measurements Ranges (continued):
RATES: Wheel Circumference:
Yards per Hour 10cm: 3.281 to 131,233 YPH
12 in: 10.000 to 240,000 YPH
Miles per Hour 10 cm: 0.002 to 74.564 MPH
12 in: 0.006 to 136.36 MPH
Centimeters per Second 10 cm: 0.084 to 3,333.3 CM/S
12 in: 0.21 to 3,048.0 CM/S
Centimeters per Minute 10 cm: 5.000 to 200,000 CM/M
12 in: 15.240 to 365,760 CM/M
Centimeters per Hour 10 cm: 300.00 to 999,990 CM/H
12 in: 914.40 to 999,990 CM/H
Meters per Second 10 cm: 0.001 to 33.333 M/SEC
12 in: 0.003 to 60.960 M/SEC
Meters per Minute 10 cm: 0.050 to 2,000.0 M/MIN
12 in: 0.153 to 3,657.6 M/MIN
Meters per Hour 10 cm: 3.000 to 120,000 M/H
12 in: 9.144 to 219,460 M/H
TOTALIZER:
Counts: 0 to 999,999
Scale Totals in Inches, Feet, Yards, Centimeters or Meters
Input: Internal or External optics or linear contact wheel
Timer Specifications:
Minutes:Seconds.Tenths to 99:59.9
Accuracy: ±0.2 second
Resolution: 0.1 second
5

Display: Dual LCD Display (5-digit upper/scrolling, 5-digit
alphanumeric lower display)
Batteries: 2 “AA” 1.5 V (DC) alkaline included
(Note: Batteries are NOT rechargeable.)
Battery Life: 30 hours continuous typical with batteries provided
External Input:
Absolute max: -0.3 V to 5 V (DC)
Minimum: low below 1.2V and high above 2V (TTLcompatible)
Edge: Triggers on Positive edge
Power Out: 3.0 V nominal, approx. 2.8 V @ 20 mA max
Pulse Output: 0 V to 3.3 V (DC) pulse
Same shape as External Input signal or high when internal
optics sees a reflection
Dimensions: 6.92” (17.58 cm) H x 2.4” (6.10 cm) W x 1.6” (4.06 cm) D
Weight: Approx. 7 oz. (210 g)
This product is designed to be safe for indoor use under the following
conditions (per IEC61010-1).
Installation Category II per IEC 664
Pollution Degree Level II per IEC 664
Temperature: 40 °F to 105 °F (5 °C to 40 °C)
Humidity: Maximum relative humidity of 80% for temperatures up to
88 °F (31 °C) decreasing linearly to 50% relative humidity
at 100 °F (40 °C). Humidity non-condensing.
Specifications subject to change without notice. 6

7
5.0 INPUT / OUTPUT
Output socket (q)
Input socket (p)
Input: Accepts remote sensor or
Remote Contact Assembly.
1/8” (3.5mm) stereo phone
plug.
Output: 1 pulse per revolution TTL
output on internal operation.
Pulse repeater with external
sensors. 1/8” (3.5mm) mono
phone plug.
Pulse Output
Common
(GND)
Common
(GND)
Pulse Output
Signal Input
+3V Out to
Sensor
Common
(GND)
Common
(GND)
+3V Out to
Sensor
Signal Input
Input Connector Detail (Stereo plug)
Output Connector Detail (Mono plug)