Omega HHT13 User Manual

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M4151/0507

HHT13

Pocket Laser Tachometer

with Remote Sensor Input

SAFEGUARDS AND PRECAUTIONS

LASER RADIATION

AVOID DIRECT EYE EXPOSURE

CLASS 2 LASER PRODUCT

MAX OUTPUT POWER: 1mW

EMITTED WAVELENGTH: 650nm

CLASSIFIED TO IEC 60825-1:2001

14.0 OPTIONS / ACCESSORIES

HHT-RT-5 Reflective Tape, 5 foot [1.5 m] roll, ½ inch [13 mm]

wide

HHT13-RCA Remote Contact Assembly with 10 cm wheel,

concave and convex tips

WARNING - This product emits a visible beam of laser light.
Avoid exposure to the laser radiation. The use of optical viewing
aids (binoculars, for example) may increase the ocular hazard.

CAUTION - The laser beam should not be intentionally aimed at
people or animals.

CAUTION - Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.

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 2002/96/EC 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.

HHT13-CTE Concave/convex contact tips and 10 cm linear contact

wheel

HHT13-LCW 12 inch circumference wheel for use with HHT13-

RCA

HHT20-ROS Remote Optical Sensor

HHT-ROS-CABLE 25 foot extension cable for all sensors

HHT13-CC10 Padded Nylon Carrying Case

24

12.0 BATTERIES

When displayed, replace batteries.

Remove battery
cover

Install two 1.5V
“AA” alkaline
batteries

NOTE: Both
batteries face the
same direction.

13.0 CLEANING

To clean the instrument, wipe with a damp cloth using mild soapy solution.

TABLE OF CONTENTS

TABLE OF CONTENTS

1.0 OVERVIEW ............................................................................. 1

2. 0 FEATURE LOCATIONS ............................................................ 1

3.0 LCD DISPLAY SYMBOLS ....................................................... 2

4.0 HHT13 SPECIFICATIONS........................................................ 3

5. 0 PREPARATION FOR MEASUREMENT .................................... 7

5.1 Non-Contact Preparation ............................................. 7

5.2 Direct Contact Preparation.......................................... 7

5.3 Connecting External Sensors ..................................... 8

6.0 TACHometer Mode ................................................................ 9

6.1 TACHometer Setup ....................................................... 9

6.2 TACHometer Operation .............................................. 11

7.0 RATE Mode........................................................................... 12

7.1 RATE Setup ................................................................. 12

7.2 RATE Operation .......................................................... 14

8.0 TOTALizer Mode .................................................................. 15

8.1 TOTALizer Setup......................................................... 15

8.2 TOTALizer Operation .................................................. 18

9.0 TIMER Mode ......................................................................... 19

9.1 TIMER Setup ................................................................ 19

9.2 TIMER Operation ......................................................... 20

10.0 MAKING MEASUREMENTS .................................................. 21

10.1 Non-Contact Measurements ..................................... 21

10.2 Direct Contact Measurements .................................. 2 1

11.0 INPUT / OUTPUT .................................................................. 22

12.0 BATTERIES ........................................................................... 23

13.0 CLEANING ............................................................................ 23

14.0 OPTIONS /ACCESSORIES ................................................... 24

23

1.0 OVERVIEW

The HHT13 is a precision hand-held multifunction Tachometer, Ratemeter,
Totalizer and Timer. It is programmable to display directly in Revs, Inches,
Feet, Yards, Miles, Centimeters and Meters or function as a stopwatch or
interval timer. Input / output sockets allow for remote sensing and pulse
output to external indicating devices. For ease of use, the instrument can be
“Locked-on” for continuous operation.

2.0 FEATURE LOCATIONS

LCD display

Min / Scroll
Down arrow

Tripod mounting bushing
(underside)

Start / Reset button

Belt clip

Menu / Select
and Lock-on
button

11.0 INPUT / OUTPUT

Input socket (

Output socket (

Signal Input

+3V Out to

Sensor

Common

(GND)

Input: Accepts remote sensor or

Remote Contact Assembly
(HHT13-RCA). 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.

Common
(GND)

+3V Out to
Sensor

Signal Input

TT

T)

TT

SS

S)

SS

Input socket

Output socket

Max / Scroll Up
arrow

Battery compartment

Input Connector Detail (Stereo plug)

Signal Input

Common

(GND)

Common
(GND)

Signal Input

AVOID EXPOSURE - LASER RADIATION IS
EMITTED FROM THIS APERTURE

Output Connector Detail (Mono plug)

1

22

10.0 MAKING MEASUREMENTS

10.1 Non-Contact Measurements

Hand-held

OR

Laser

10.2 Direct Contact Measurements

Rotational Linear

(Use concave
tip for small
shafts)

to RCA

from HHT13 from HHT13

ONLY USE MODERATE PRESSURE

WARNING: Making measurements in direct contact with rotating
equipment can be dangerous. Keep all loose clothing and hair
away from exposed moving machinery. Keep the hand holding
the instrument well behind the back end of the Remote Contact
Assembly. Properly replace all machinery guards after completing
measurement. Do not use for rotation greater than 20,000 RPM.

21

External Sensor (HHT20-ROS

shown)

Light

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).

2

4.0 HHT13 SPECIFICATIONS

Laser Specifications:

Classification: Class 2 (per IEC 60825-1 Ed 1.2 2001-8)

Complies with FDA performance standards for laser products except
for deviations pursuant to Laser Notice No. 50, dated July 26, 2001.

Maximum Laser Output: 1mW
Pulse Duration: Continuous
Laser Wavelength: 650 nm
Beam Divergence: < 1.5 mrad
Beam Diameter: 4 x 7 mm typical at 2 meters

Laser Diode Life: 8,000 operating hours MTBF (1 year

warranty)

Non-Contact Specifications:

Ranges: RP M 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 reflective 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)

3

8. Save and
advance

9. Exit Setup –
Ready to
measure

Unit will remember these settings (including lock on/off) even if turned off
and back on.

DONE, then Units
selected

9.2 TIMER Operation

Measure:

Manual

Auto

Reset

Lap

Power Off

Each press toggles Start and Stop

Start and Stop triggered by

OR

Remote Optical Sensor
(HHT20-ROS)

With Timer stopped ­Resets time to 00:00.0

With Timer running ­Stops at elapsed time to date.
To continue, press again.

Automatic after 90 seconds

OR

if unit not Locked on

20

9.0 TIMER Mode

9.1 TIMER Setup

1. Turn Power
ON

1a. To toggle Lock

On/Off

Press and Hold

2. Enter Setup
Mode

3. Enter selection
of Mode

4. Select TIMER
Mode

5. Save and
advance

6. Enter selection
of Timer
function

7. Select Timer
function

19

Last Units selected
are displayed

Locked On

Last Mode selected
is displayed

OR

OR Toggles between

Repeat until

TIMER displayed

MAN or AUTO

Manual and
Auto

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

8.2 TOTALizer Operation

Measure

Press and hold Lock on

Recall Max
or Min

Recall Time
in seconds

If unit is
Locked on:

Power Off

NOTE: Pressing

OR

Max or Min Speed (in
last selected Tach or Rate
mode units)

Shows time in seconds
from when the Start /
Reset button is pressed
until the last input signal
measured.

Resets Max/Min, Total and
Measurement Time

Automatic after 90 seconds if

OR

unit not Locked on

OR

once before 90
seconds will keep
measurements in
memory and the
display turned on
longer.

18

TOTALizer Setup (continued):

9. Enter selection
of number of
decimal places

10. Select decimal
places

11. Save and
advance

12. Exit Setup –
Ready to
measure

Units = COUNT: Rotational/Linear Units:
DONE,

then Units selected

Unit will remember these settings (including lock on/off) even if turned off
and back on.

OR

NONE, 1, 2 or 3

Repeat until
desired decimal
places displayed

DONE,
USE CONTACT TIP or

[wheel selected],
then Units selected

Display: 5 x 0.5” (12.7mm) numeric digits plus 5 Alpha-numeric LCD

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 1.2 V and high above 2 V (TTL compatible)

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.

617

5.0 PREPARATION FOR MEASUREMENT

5.1 Non-Contact Preparation

For Internal operation (Red laser) or External operation
using optional Remote Optical Sensor (ROS-Red LED).

1. Clean
Shaft

2. Apply 1/2”
square T-5
Reflective
tape

6. Enter
selection of
Units

Internal or External ROS: External RCA:

COUNT

Only

7. Select Units

Different options displayed for
Internal or External operation.

Rotational: REV
Linear: INCH, FEET,
YARDS, CM, METER

OR Repeat until

desired Units
displayed

For Small Shafts:

5.2 Direct Contact Preparation

For External operation ONLY using optional Remote
Contact Assembly (HHT13-RCA).

Select and install contact option:

1. Contact Tip (Convex tip shown.

Use Concave tip for small shafts.)

7

As small as 1/8” wide
on side or radius edge

Align flats

8. Save and
advance

Only for Linear Units:
8a. Enter selection

of Wheel

8b. Select Wheel

8c. Save and

Advance

OR

COUNT or REV Linear Units

Last Wheel
selected is
displayed

OR

Toggles
between

10CM and
12IN

16

8.0 TOTALizer Mode

8.1 TOTALizer Setup

2. 10 cm Wheel 3. 12 inch Wheel

OR

1. Turn Power

2. Enter Setup

3. Enter

4. Select

5. Save and

15

ON

Internal or External ROS: External RCA:

Last Units
selected

1a. To toggle Lock On/

Off

Press and Hold

Mode

selection of
Mode

TOTAL
Mode

advance

Different messages displayed for
Internal or External operation.

OR Repeat until

EXTRN, then scrolling
message, then last
Units selected

Locked On

Last Mode selected
is displayed

TOTAL displayed.

Install with
pin in shaft

Tighten screw
securely into flat
on shaft.

fully seated
in slot.
Tighten
screw.

5.3 Connecting External Sensors

Plug sensor into







Input socket

SS

S

SS

In

Remote Optical Sensor

(HHT20-ROS)

Remote Contact Assembly

(HHT13-RCA)

(shown with optional 12 inch wheel)

8

6.0 TACHometer Mode

6.1 TACHometer Setup

11. Save and
advance

1. Turn
Power
ON

1a. To toggle Lock On/

Off

2. Enter
Setup
Mode

3. Enter
selection
of Mode

4. Select
TACH
Mode

5. Save and
advance

6. Enter
selection
of Units

Press and Hold

OR

Last Units selected are
displayed

Locked On

Last Mode selected is
displayed

Repeat until TACH
displayed

RPS, RPM or RPH

12. Exit Setup –
Ready to
measure

Unit will remember these settings (including lock on/off) even if turned off
and back on.

DONE,
USE CONTACT TIP or

[wheel selected],
then Units selected

7.2 RATE Operation

Measure

Press and hold Lock on

Recall Max

Recall Min

If unit Locked
on:

Power Off

OR

Max Speed

Min Speed

Resets Max/Min

Automatic after 90 seconds

OR

if unit not Locked on

9

14

RATE Setup (continued):

6. Enter selection
of Units

Linear: IPS, IPM, IPH, FT/S, FT/M, FT/H, YPS, YPM,
YPH, MPH, CM/S, CM/M, CM/H, M/SEC, M/MIN, M/H

7. Select Units

8. Save and
advance

Only for Linear Units:
8a. Enter

selection of
Wheel

Rotational: C RPS,
C RPM or C RPH

OR Repeat until

desired Units
displayed

OR

Rotational Units

Linear Units

Last Wheel
selected is
displayed

7. Select Units

8. Save and
advance

9. Enter selection
of number of
decimal places

10. Select decimal
places

11. Save and
advance

OR Repeat until

desired Units
displayed

NONE, 1, 2 or 3

OR

Repeat until
desired decimal
places displayed

8b. Select

8c. Save and

9. Enter selection
of number of
decimal places

10. Select decimal
places

13

Wheel

Advance

OR Toggles

NONE, 1, 2 or 3

OR

Repeat until
desired decimal
places displayed

between 10CM
and 12IN

12. Exit Setup –
Ready to

DONE, then Units
selected

measure

Unit will remember these settings (including lock on/off) even if turned off
and back on.

10

6.2 TACHometer Operation

Measure

OR

7.0 RATE Mode

NOTE: External Remote Contact Assembly (HHT13-RCA) must be

inserted into input socket.

Recall Max

Recall Min

If unit Locked
on:

Power OFF

Press and hold

Lock on

Max Speed

Min Speed

Resets Max/Min

Automatic after 90 seconds

OR

if unit not Locked on

7.1 RATE Setup

1. Turn
Power
ON

1a. To toggle Lock

On/Off

Press and Hold

2. Enter
Setup
Mode

3. Enter
selection
of Mode

4. Select
RATE
Mode

5. Save and
advance

OR

EXTRN, then scrolling
message, then last Units
selected

Locked On

Last Mode selected is
displayed

Toggles between
RATE and TOTAL.
Select RATE.

11

12