Sanwa LP10 Manual

Sanwa Måleudstyr LP10

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Thank you for purchasing SANWA laser power meter LP10.

Read this manual carefully before use for safe use of the instrument.

Retain this manual together with the instrument for future reference.

[1] Operating Precautions

Do not stare directly at the laser light or allow its reflections

enter your eyes during measurement. Laser light incident to

your eyes may lead to degradation or loss of eyesight. Special

care is required for the IV light which is invisible for naked eyes.

An excessive optical input may damage the photodiode in

the light sensor. Do not apply light that is stronger than the

measurable range .

Be careful not to damage the light sensor surface or stain it

by douching with a bare hand. Scratches or stain may

deteriorate the sensitivity of the instrument. If the light

sensor surface gets dirty, wipe lightly with ethyl alcohol.

The auto power save function of the instrument turns it off in 15

minutes after an operation. To resume the meter from auto power

save status, press MAX/MIN button or turn the Range switch off

position, then turn off the power.

Be sure to set the Power/Range switch to OFF after use.

This instrument is a pocket-sized laser power meter featuring

excellent portability and operability.

It can be applied easily in check and maintenance of the

optical power levels of equipment using laser light.

Using 633 nm of a He-Ne laser as the reference wavelength,

this instrument enables direct reading of the optical power of

visible-range laser light from a visible laser pointer, DVD

player’s optical pickup, etc.

The power of other wavelength can also be measured by

converting the reading according to the spectral sensitivity

characteristic table (typical values).

The measured object is CW laser. A modulated laser cannot

be measured accurately.

[2] Applications

[4] Nomenclature

•

Pocket size.

Separate light sensor probe can be integrated with the main

body for measurement.

4039 full-scale count with a bar graph display.

Direct reading of the laser power of the reference

wavelength of 633 nm, while the laser power of other

wavelengths can be read by converting it according to the

spectral sensitivity characteristic table.

Wide measuring range from 0.01 W to 40.39 mW.μ

MIN/MAX hold functions.

The diffusion sheets are used in the sensor, it can suppress the

“return light” that is generated when a laser light enters the sensor.

Auto power save function prevents wasting of battery power.

[3] Features

Normal measurement

Push Push 2s

Push 2s

Push

MAX Hold MIN Hold

MIN Hold mode:

Holds the minimum value during measurement and

displays it in the digital display. Indicated by “MIN” shown

in the display.

MAX Hold mode:

Holds the maximum value during measurement and

displays it in the digital display. Indicated by “MIN” shown

in the display.

•

The bar graph display is not held.

The MIN/MAX Hold mode is canceled when the

measurement range is changed.

The auto power save function does not work in

the MIN/MAX Hold mode.

Using the MAX Hold function makes it possible display

always the maximum value measured. This solves the

problem in the meter reading, that varies depending on the

position, distance and angle of the incidence of laser beam

into the light sensor surface.

[5] Functions

Notes)

•

Power/Range switch

This rotary switch is used to turn the illuminance meter

on-off and switch the measurement range to the 40 W, 400 μ

μW, 4 mW or 40 mW range.

Battery warning indicator

When the internal batteries are nearly exhausted and the

supply voltage drops, blinking “BT” appears in the display. If

this happens, please replace both batteries with new ones.

MIN/MAX Hold button (Also used as the protection cover lock)

Push this button during measurement to set the digital value

display to the MAX Hold or MIN Hold mode as shown below.

How to integrate the light sensor

probe with the main body for

measurement

Insert the light sensor probe in

the position on the top left of the

main body as shown in the

figure.

How to open or close the

protective cover

To open the protective cover,

push and hold the button on the

left side of main body into the

direction shown in the figure,

and open the protective cover.

To close the protective cover, first store the light sensor

probe in the storage position of the main body as described

below, and then close the protective cover until it is locked.

How to store the light sensor probe

The light sensor probe can be stored in the main body as

shown below.

Fit the light sensor probe

into the storage position so

that the light sensor surface

faces up.

Bend the cord and store it

in the space on the right of

the light sensor probe.

The auto power save function of the instrument turns

it off in 15 minutes after an operation. To resume the

meter from auto power save status, press MAX/MIN

button or turn the Range switch off position, then turn

off the power.

When over range, displays "OL".

Laser should be received on the center of the sensor at

right angle.

Measurement of weak laser power (below 1 mW) tends

to be affected by ambient light (disturbance). In this

case, it is required to take a countermeasure against

disturbance, by performing measurement in a dark room.

Notes)

Measurement Procedure

[6] Measurement

•

Set the measuring range to the maximum range (40 mW).

Apply the laser beam to the light sensor surface.

After measuring the current power, set the measuring range

to the optimum range.

After completing measurement, set the Power/Range switch to OFF.

How to correct the wavelength sensitivity of the light sensor

The reference wavelength that can be read directly with this

instrument is 633 nm. To measure light with wavelengths

other than 633 nm, convert the reading using the sensitivity

correction coefficient obtained from the photodiode’s spectral

sensitivity characteristics (typical values).

Reading Correction coefficient Wavelength-converted value

2.44 (mW) x 0.74

≒1.81 (mW)

*This conversion value is a guide and is not guaranteed.

Example)

When the measured laser light wavelength is 780 nm and the

power meter reading is 2.44 mW:

To maintain accuracy, perform calibration and inspection at least once an year.

[7] Maintenance and Administration

[8] After-Sale Servicing

The panel and case are little resistant to volatile solutions and heat. Do

not wipe the thermometer using lacquer thinner or alcohol and do not

place it heat a source of high temperatures (soldering iron, for example).

Do not store the instrument in a place subject to vibrations

or in a place which it may drop.

Do not store the instrument under direct sunlight or in a

place with low temperatures, high humidity or condensation.

Be sure to remove the batteries when the instrument is not

to be used for an extended period.

For information of repair, please contact the dealer, selling

agent or maker.

Storage

Set the Range switch to OFF, then remove the screw retaining

the battery compartment cover using a screwdriver.

Remove the battery compartment cover and take out the

exhausted batteries.

Insert new batteries without mistaking the + and – polarity.

Attach the battery compartment cover and clamp it with the screw.

Battery replacement

Replacement Procedure:

For calibration and inspection of the instrument, please

contact dealer, sole agent and maker.

Calibration

1. Maintenance check

External finish

Light sensor

Check if the external finish is damaged by dropping the

instrument, etc.

Check if the light sensor surface is damaged or durty.

Check if the light sensor cord is damaged.

If any of the above parts is damaged, do not use the instrument

but have it repaired.

•

Light sensor element

Measurable wavelength

range

Directly-readable

wavelength

Display

Over load indication

Low battery indication

Sampling rate

Ranges

Measured object

Accuracy

Functions

EMC directive, RoHS directive

Power supply

Power consumption

Environmental condition

Operating temperature

/humidity range

Storage temperature

/humidity range

Dimensions

Light sensor probe

Sensor cord length

Accessories

Si photodiode (Light sensor surface diameter Ø 9 mm)with diffusion sheet

400 nm to 1100 nm

633 nm (He-Ne laser)

Other wavelengths should be converted using typical

correction factor

Digital display: 4039 full scale

Bar graph display: 41-segment display

displays“OL”

Blinking “BT” appears in the display when the built-in batteries

are nearly exhausted and battery supply voltage drops

Digital display: Approx. 3 times/sec.

Bar graph display: Approx. 30 times/sec.

40 W range: 0.01 W to 40.39 Wμ μ μ

400 W range: 0.1 W to 403.9 Wμ μ μ

4 mW range: 0.001 mW to 4.039 mW

40 mW range: 0.01 mW to 40.39 mW

CW laser, the modulated laser cannot be measured accurately

±5 % (in the 4 mW range, at the reference wavelength of

633 nm and 1 mW)

Temperature: 23 2 ℃±℃

MIN Hold function, MAX Hold function

Auto power save function (15 min. after operation)

IEC61326(EMC). EN50581(RoHS).

LR44 1.5 V x 2

Approx. 8 mW

Altitude 2000 m or below, pollution degree Ⅱ.

Temperature 0 to 40 , humidity 80 %RH or less℃

(without condensation)

Temperature -10 to +50 , humidity 80 %RH or less℃

(without condensation)

117( ) x 76( ) x 18( ) mm, approx. 120 gramsH W D

84( ) x 16( ) x 10( ) mmH W D

Approx. 0.5 m when extended

Instruction manual x 1

[9] Specifications

Design and specifications are subject to change for reasons of

improvement, etc.

INSTRUCTION MANUAL

LASER POWER METER

Dempa Bldg., 4-4 Sotokanda 2-Chome

Chiyoda-ku, Tokyo, Japan

LP10

Protective cover

Light sensor probe

storage position

Light sensor probeLight sensor window

Power/Range

switch

MIX/

MAX

Hold

button

LCD display panel

-3--2-

-6--4- -5-

-1-

-7- -8-

Produkt Specifikationer

Mærke:	Sanwa
Kategori:	Måleudstyr
Model:	LP10

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