Sanwa SE300 Manual

Sanwa Måleudstyr SE300

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[1] SAFETY PRECAUTIONS

Before use, read the following safety precautions.

Thank you for purchasing Digital Tachometer Model SE300.

Before use, please read this manual thoroughly. After reading it,

keep it together with the product for reference to it when necessary.

The instructions given under symbols “ WARNING” and

“ CAUTION” must be followed to prevent incidents such as an injury.

1-1 Explanation of Warning Symbols

The meaning of the symbols used in this manual is as follows.

: Very important instructions for safe use.

• The warning messages are intended to prevent accidents to

operating personnel such as an injury.

• The caution messages are intended to prevent damage or

malfunction to the instrument.

1-2 Warning Instructions for Safe Use

To prevent human incidents such as an injury, be sure to

observe the following instructions when using the instrument.

1. Before proceeding to measurement, wear optimum working

cap and wear so that your hair and clothes are not entangled

by the rotating object. Be also sure to wear protective eyeglasses.

2. Never touch the rotating object during measurement.

3. Do not use the instrument if the rotating object to be

measured presents any irregularity.

4. If there is any risk of endangerment of the measurement

personnel by a part of the rotating object, secure the safety

of that part by installing an enclosure, etc.

5. Do not service or modify the instrument unless when

replacing the batteries.

6. The instrument should be inspected in the start-up inspection

of every day as well as more than once a year.

WARNING

1. Take care not to drop the instrument from a high altitude

when handling it.

2. Take care not to apply a strong impact to the lens section of

the instrument.

3. Do not open the case of the instrument, touch the internal

circuit boards or parts or modify it in any manner.

CAUTION

[2] APPLICATIONS AND FEATURES

2-1 Applications

This instrument is a noncontact, handheld type digital tachometer

designed for measuring the rotation speeds of rotating objects such

as motors. The instrument can also be used as a contact type tachometer

by connecting the optional ENC-3 Contact Measurement Attachment.

2-2 Features

• Designed in pursuit of the ease of holding to enable stable

measurement.

• Abundant measurement modes.

• Long detection distance in noncontact measurement (max. approx.

50 cm) enabling measurement from a distance from the rotating object.

• Contact measurement capability using the optional ENC-3

Contact Measurement Attachment.

• MAX/MIN display function.

• Auto power OFF function (approx. 2 min., cancellation possible).

• Bright backlight.

•

Fixed installation possible using a commercially available camera tripod.

[3] NAME OF COMPONENT UNITS

3-1 Main Instrument and Accessories

Irradiation/detection lens

Power button

Rotation detection

indicator LED

Front Back

Contact adapter fixing hole

Tripod hole

Battery cover

Function buttons

See section [4]

3-2 Display

Numeric value display Units

: Maximum value : Auto power OFF

: Minimum value : Contact measurement mode

: Data Hold : Low battery alarm

For the units and their combinations, see “5-3 Noncontact

Measurement” and “5-4 Contact Measurement”.

[4] DESCRIPTION OF FUNCTIONS

4-1 Power button:

Press and hold the button for more than one second to turn the

instrument ON.

All of the display and indicators light up and then the instrument

gets ready for measurement.

* If there is a reflective object in front of the lens when the instrument

is turned ON, a numeric value may be displayed. In such a case,

wait for about 2 seconds until the numeric value becomes [0].

(Ready for measurement)

Press the same button for more than one second to turn the

instrument OFF.

The measurement mode setting is saved in memory even after the

instrument has been turned OFF.

4-2 Auto power OFF

When the instrument has not detected reflected light for about 2

minutes after the last operation performed, the instrument turns

OFF automatically. To recover from the auto power OFF status,

turn the instrument ON with the usual procedure.

To cancel the auto power OFF function, press and hold the

button and then hold the Power button for more than one second

to turn the instrument ON. The indicator will not be displayed in

the measurement display.

4-3 Measurement mode selection: button

Each press of the button switches the measurement mode.

Press and hold the button for more than one second. The

indicator appears indicating that the instrument is in the noncontact

measurement mode. To return to the contact measurement mode,

press and hold the button for more than one second again.

* For details on the measurement mode switching of the noncontact

an d co n ta ct m ea s u re m e n t m o d es , s e e “ 5 - 3 No n co n t a ct

Measurement” and “5-4 Contact Measurement”.

4-4 Backlight switching: button

Press the button to switch ON the backlight of the display

panel. Press the button again to switch the backlight OFF.

4-5 Data hold: button

When the button is pressed, the indicator appears on

the display and the numeric value being displayed is held. The

displayed value will not change even when the measurement input

varies. When the button is pressed again, the indicator

disappears and the data hold function is canceled.

* The data hold function is also canceled when the button is

pressed.

4-6 Maximum and minimum value display:

button

Press the button to enter th mode in which the e

instrument saves and stores the maximum and minimum measurement

values from the moment the button is pressed. Each press of the

button switches the displayed values in the following cycle:

• Maximum value display: The instrument displays the maximum

value since the press of the button.

• Minimum value display: The instrument displays the minimum

value since the press of the button.

• Current value display: The instrument displays the current

measurement value while saving the maximum and minimum

values since the press of the button. To view the

maximum or minimum value, it is required to press the

button to the maximum or minimum value display.

To cancel the maximum and minimum value display, press and

hold the button for more than one second.

* The maximum/minimum value display function is also canceled

when the button is pressed.

* The button is disabled during data hold ). The (

maximum and minimum values are not updated during it.

* Maximum and minimum value display function is disabled in the

count measurement mode.

4-7 Count clear: button

Press the button during count measurement (unit: count)

clears the counted value.

4-8 Low battery alarm

When the battery power is consumed and the voltage drops below

about 2.3 V, the indicator appears on the display panel to

solicit early replacement of the batteries.

4-9 Tripod hole

The instrument can be installed on a

commercially available tripod for fixed

use. Screw in the tripod into the

threaded tripod hole on the rear of the

instrument.

• Thread size: 1/4-20 UNC (ISO 1222)

* Use a commercially available tripod.

[5] MEASURING PROCEDURE

5-1 Start-up inspection

Inspect the following points before starting the work of every day.

• Appearance: Check that the appearance of the instrument is not

damaged by falling, etc.

If any irregularity is found, do not use the instrument.

• Scratches and dirt on the lens: Check that the lens is not

clouded.

Accurate measurement is impossible if the lens is dirty or clouded.

Dirt or cloud should be removed by gently wiping with a soft, dry cloth.

• Check that the low battery alarm indicator is not displayed

when the instrument is turned ON. If it is displayed, replace the

batteries with new ones.

* If nothing is displayed on the display panel, the batteries could be

exhausted completely.

5-2 Warning for measurement

1. Do not measure a rotating object from a close distance at

which the instrument could contact the rotating object.

2. Do not attempt to measure an object rotating at a speed

exceeding the measuring range of the instrument.

WARNING

5-3 Noncontact measurement

Be sure to stop the rotating object to be measured before

attaching the reflective sticker on it.

WARNING

1. Before attaching the reflective sticker on the rotating object,

remove the moisture, oil and dust on the sticker attaching

surface completely.

2. If the sticker is to be attached on a shiny plated surface,

accurate measurement would be impossible due to diffuse

reflections. In this case, paint the sticker attaching surface

black or attach a piece of black tape on the surface.

3. Protect the reflective sticker on the rotating object against

penetration of intermittent light such as the light from a

fluorescent lamp. If an effect of extraneous light is expected,

adjust the positioning of the instrument so that it displays [0]

when the rotating object is not rotating before measurement.

4. Accurate measurement may sometimes be impossible under

direct sunlight.

5. Measurement of high-speed rotation may be impossible of

the time the irradiated light passes on the reflective sticker is

short (less than about 0.2 second). In this case, increase the

area of the reflective sticker.

CAUTION

To perform noncontact measurement, attach the reflective sticker

(provided with the instrument) on the rotating object to be

measured as shown below.

Rotating object

Reflective sticker

Irradiation light

1) Turn the instrument ON and set the desired measurement mode.

Each press of the button switches the measurement

mode in the following cycle:

Rotation speed measurement Rotation speed measurement

(revolutions per minute) (revolutions per second)

Rotation count measurement Interval measurement

(counts) (milliseconds)

2) Apply the irradiation light perpendicularly on the reflection

marking on the rotating object so that the rotation detection

indicator LED lights steadily. The distance between the tip of the

detection section of the instrument and the reflective surface on

the rotating object should be between 50 and 500 mm.

3) The instrument displays the measurement result.

SE300

DIGITAL TACHOMETER

01-1408 2040 6006

INSTRUCTION MANUAL

Dempa Bldg, 4-4 Sotokanda 2-Chome

Chiyoda-ku, Tokyo, Japan

− 1 − − 2 − − 3 − − 4 −

Produkt Specifikationer

Mærke:	Sanwa
Kategori:	Måleudstyr
Model:	SE300

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