DIGITAL

PHOTO/CONTACT

TACHOMETER

This PHOTO/CONTACT TACHOMETER is

small in size, light in weight, easy to carry.

Although complex and advanced, it is convenient

to use and operate. Its ruggedness will allow

many years of use if proper operating techniques

are followed. Please read the following

instructions carefully and always keep this

manual within easy reach.

1. FEATURES

* Multifunctional, one instrument combines

PHOTO TACH. (RPM) & CONTACT TACH.

(RPM , m/min., ft/min).

* Wide measuring range.

* The last Value / max. Value / min. Value will be

automatically stored in memory and can be

obtained by pressing MEMORY CALL

BUTTON .

* LCD display gives exact rpm with no guessing or

errors and saves battery energy.

* This tachometer used the exclusive one chip of

MICROCOMPUTER LSI-circuit and crystal

time base to accurately offer the high accuracy

measurement.

2. SPECIFICATIONS

Display : 5 digits, 10mm (0.4 ) LCD ( Liquid

Crystal Display)

Measurement range :

PHOTO TACH.: 2.5~99,999 RPM

CONTACT TACH. : 2.5~19,999 RPM

SURFACE SPEED: 0.05~1,999.9 (m/min.)

0.2~6,560 ft/min

Resolution:

TACHOMETER:

0.1 RPM (2.5 ~ 999.9 RPM)

1 RPM (over 1,000 RPM)

SURFACE SPEED:

0.01m/min. (over 10 m/min.)

0.1 m/min. (over 100 m/min.)

0.1 ft/min. (0.1 ~ 999.9 ft/min.)

1 ft/min. (over 1,000 ft/min.)

Accuracy : TACH.: (0.05%+1 RPM)

SURFACE SPEED: (0.05%+0.03m/min.)

Sampling Time:

PHOTO TACH. (1 sec. over 60 RPM).

CONTACT TACH. (1 sec. over 15 RPM)

Photo Tach. Detecting distance :

50 to 150mm / 2 to 6 inch. (typical max.

300mm/12 inch ).

Test range select: Automation

Battery : 4x1.5AA(UM-3)battery

Operation temp. : 0-50 (32-122 )

Size : 215x65x38mm (8.5 x2.6x1.5 inch)

Weight : 300g/0.651b (including batteries)

Accessories :

Carrying case ...............................1pc.

Reflective tape marks (350mm).......2pc.

RPM adapter (CONE).....................1pc.

RPM adapter (FUNNEL).................1pc.

Surface speed test wheel.................1pc.

Operation manual...........................1pc.

3-8 Rotating ring

3-9 Circumferential speed ring

3-10 Battery Compartment/Cover

4. PHOTO TACH. MEASURING PROCEDURE

4-1. Slide the FUNCTION SWITCH to RPM

PHOTO position.

4-2. Apply a reflective mark to the object being

measured. Depress the MEASURE BUTTON

and align the visible light beam with the

applied target. Verify that the MONITOR

INDICATOR lights when the target passes thru

the light beam. Release the MEASURE

BUTTON when the reading stabilizes (about 2

seconds). If the test RPM less than 50 RPM,

suggest to attach more REFLECTIVE

MARKS averagely. Then divided the reading

shown by the number of REFLECTIVE

MARKS is the real RPM to get high

resolution & stability on display reading.

4-3 REFLECTIVE MARK

Cut and peel adhesive tape provided into

approx. 12mm ( 0.5 ) sq uares an d ap ply on e

square to each rotation shaft.

a. The non-reflective area must always be

greater than the reflective area.

b. If the shaft is normally reflective, it must be

covered with black tape or black paint before

attaching reflective tape.

5.CONTACT TACH. MEASURING PROCEDURE

5-1 Slide the FUNCTION SWITCH to RPM

CONTACT position.

5-2 Depress the MEASURE BUTTON and

lightly pressing the rotating ring (3-8) against

the center hole on the rotating hole. Release

the MEASURE BUTTON when the reading

stabilizes (approx. 2 seconds ).

6. SURFACE SPEED MEASUREMENT

6-1Slide the FUNCTION SWITCH to m/min

(SURFACE SPEED) or ft/min. (SURFACE

SPEED) position.

6-2Depress the MEASURE BUTTON and

simply attaching the surface speed test wheel

to the detector. Release the MEASURE

BUTTON when the reading stabilizes.

7. MEMORY CALL BUTTON OPERATION

7-1 A readout (the last Value, max. Value, min.

Value) obtained immediately before releasing

the MEASURE BUTTON is automatically

memorized. For example, please ref. fig. 2.

7-2 That memorized values can be displayed on

the indicator when

A. First push-To display the last value: LA and

the last value will be displayed by turn.

B. Second push-To display the maximum value:

UP and the max. value will be displayed by turn.

C. Third push-To display the minimum value:

dn and the min. value will be displayed by turn.

8. BATTERY REPLACEMENT

8-1 When it is necessary to replace the battery

(battery voltage less than approx. 5V ), symbol

- + will appear on the display.

8-2 To loose the screw of the battery cover (Fig.1, 3-

10) away from the instrument and remove the

batteries.

8-3 Install the batteries correctly into the case.

Permanent damage to the circuit from incorrect

installation.

8-4 If the instrument is not to be used for any

extended period, remove batteries.