Simplified Integrated Amount ofSolar Radiation Measuring System

OptoLeaf Measuring Instrument
D-Meter RYO-470
Instruction Manual(2016.11.02)
Before use, read this instruction manual carefully and understand the contents well.
Save this manual for future reference.

Contents
Introduction ................................................... 2
Directions for use ......................................... 3
Packing contents (basic set) ....................... 4
Names and functions of OptoLeaf
measuring instrument, D-Meter ................ 5
For correct use ............................................. 6
How to use D-Meter, OptoLeaf measuring
instrument ................................................... 7
1．How to turn on the power ..................... 7
2．How to turn off the power ..................... 7
3．How to set OptoLeaf to be measured .. 8
4．Before measurement ............................. 9
5．Zero adjustment ................................... 10
6．OptoLeaf measurement ...................... 11
7．Error message ..................................... 12
Warranty ...................................................... 13

Taisei Fine Chemical Co., Ltd.
Function product Division
3-5-1, Nishi-shinkoiwa, Katsushika-ku,
Tokyo 124-8535, JAPANhttp://www.taisei-fc.co.jp

Instruction Manual

Introduction
Thank you very much for purchasing our simplified integrated amount of solar radiation measuringsystem, OptoLeaf and OptoLeaf measuring instrument. This system is an instrument to measure theamount of solar radiation based on the degree of color fading of a colored film.
Before use of this system, please read this manual carefully and handle this system appropriately tomake this system function properly.

Make sure to note the following points:
 The specifications of this device and the contents of this manual are subject to change
without notice.
 Be aware that we will not bear any responsibility for any damage caused by the use of thisdevice.
 Be aware that we will not bear any responsibility for the results produced by abuse, misuse,or improper use of this device.
 Our responsibility for guarantee shall not exceed the cost of repairing this device orreplacing any part in any case.
 We will try to bring the contents of this manual to perfection, but if any point is unclear orincorrect, please contact us.
 Reproduction or transcription of all or part of this document without permission is prohibited.

-2-Instruction ManualDirections for use
Warning
Failure to observe the following may cause breakdown, smoking, ignition, injury, and more.
1. Do not disassemble or remodel the product.
2. Do not insert a foreign substance, such as an iron plate, plastic, or paper.
3. Do not use this product in a dusty or water-splashing environment.
4. Do not throw the product into fire.
5. Keep this product out of the reach of infants.

CautionFailure to observe the following may cause performance deterioration, breakdown, damage,deformation, and discoloration.
1.

Keep this product away from direct sunlight, and high temperature andhumid environments.

2.

Use this product only within the temperature range of 20°C ± 15°C (5°Cto 35°C).

3.

When “LOBAT” is displayed on the screen, replace the existing
batteries with new ones.

4.

Do not apply excessive force to this product; for example, do not put anobject on this product.

5.

Do not expose this product to strong impacts; for example, do not drop
this product from the top of a desk.

6.

Do not put this product into a place where excessive force is appliedsuch as a pants hip pocket.

7.

Do not use thinner, benzene, alcohol, or the like to wipe this product.

Be aware that we will not bear any responsibility for the results produced by abuse, misuse,or improper use of this product.

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Packing contents (basic set)
Simplified integrated amount of solar radiation measuringsystemOptoLeaf measuring instrument, D-Meter RYO-470

・・・1pc.

OptoLeaf ( R-3D・Y-1W・O-1D )Leaf holder

・・・2pcs.

* The rolls ordered with the main unit will be included.

Transparence ref. leaf

・・・2pcs.

* The explanation of how to use OptoLeaf and OptoLeaf

Instruction manual (this book)・・・1copy

color fading curves are packed with OptoLeaf.

AA battery

・・・ pc(s).

-4-・・・roll(s)Instruction ManualNames and functions of OptoLeaf measuring instrument, D-Meter
Leaf holder

LCD panel

Catches a leaf to be measured.

Displays absorbance, and more.

Leaf selection slide switch
Selects a leaf to be measured from R-3D,
Y-1W, and O-1D.

ADJUST (ZERO) switch
Starts zero adjustment.

START switch
Turns on the power or starts absorbancemeasurement.

Leaf inlet
Accepts a leaf with the leaf holder to the end.

Battery box
Holds two AA batteries.
The lid can be opened by sliding.

-5-Instruction ManualFor correct use
1．Operating temperature
D-Meter is a microcomputer-embedded precision instrument; use this instrument under a normal
temperature environment.
Because the CPU of the microcomputer is heat sensitive, be careful not to raise the temperature ofD-Meter.
Be aware also to keep this product out of direct sunlight. In addition, be careful not to use this product inextremely low temperatures.
* Normal temperature: 20°C ± 15°C (5°C to 35°C) ... according to the definition of “normal temperature”
by the Japanese Industrial Standard (JIS Z 8703)
2．Measurement range
The measurement range of D-Meter is 2.2 to 0.6.
OptoLeaf measurement shall be performed with absorbance of not less than 0.6 as a guideline.
If the absorbance deviated from this range, the accuracy is lowered. Measurement shall be performed
within the range as much as possible.
(An error with a spectrophotometer is usually within ±0.05, but when the range is exceeded, the error
may be within ±0.10 in some cases)
A value more than 2.3 for a high concentration and a value less than 0.5 for a low concentration aredisplayed as errors.
The measurement range of D-Meter is a rough range for which OptoLeaf color fading curves (calibrationcurve) can be used.
3．Measurement of OptoLeaf’s initial value
Be sure to measure the initial values of all OptoLeaf pieces before use.
OptoLeaf is manufactured so that the initial value falls within 2.0 ± 0.2, but a uniform concentration isconsiderably hard to be made, and even for the same OptoLeaf, the values may vary depending on
measuring points. That is why, when plural OptoLeaf pieces are used to perform multi-point
measurements at the same time, be sure to measure the initial value for each OptoLeaf before use.
OptoLeaf is used to measure the degree of color fading based on the initial value; therefore, even if thecolor of OptoLeaf slightly fades, OptoLeaf can be used by measuring the initial value freshly.
4．How to place OptoLeaf on leaf holder
Measure the same points of OptoLeaf before and after exposure.
When OptoLeaf is placed on the leaf holder, it is recommended to arrange it in the same directions as
before exposure. During use of D-Meter, because absorbance is measured with transmitted light, there isno difference between the front and back surface of OptoLeaf if the same points are measured.
5．OptoLeaf color fading curve graph (calibration curve)
Be aware that measurement accuracy is reduced if exposure is insufficient or too much.
The provided color fading curve graphs (calibration curve) show values with fading OptoLeaf to someextent, and the values in the area can be obtained with an approximate expression (attached sheet).
However, the approximate expression does not apply in the stage of beginning and late fading, and then,those graphs are omitted on purpose. The tendency of the values of beginning or late fading is different
from the one of the fading central area, and it can be said that another curves (or expression) may exist.
The measurement range of D-Meter is the central area of the color fading (color fading curve graph).

-6-Instruction Manual

How to use D-Meter, OptoLeaf measuring instrument
1． How to turn on the power
Hold down the START switch (red button) in the center of the panel for 1 second to turn on the power.
If the START switch is released within 1 second, the operation becomes invalid. In such a case, holddown the START switch again for 1 second.
When the power is turned on, the LCD shows the currently selected OptoLeaf type that is selected withthe slide switch.
Holding down START switch

1 second

Keep on pressing the START switch until this indication appears.
Case of selecting “R-3D” with slide switch* Other indications are shown as follows:
Case of selecting “Y-1W” with slide switch

Case of selecting “O-1D” with slide switch

2．How to turn off the power
If no operation is performed (state of not pressing any switch) for 40 seconds, the power is automaticallyturned off.
Switch operation cannot turn off the power.
When nothing is shown on the LCD, the power is in the OFF state.

-7-

Instruction Manual

3．How to set OptoLeaf to be measured
Set OptoLeaf to be measured on the leaf holder and cut it into an appropriate size.
The size should be appropriate for setting it on the leaf holder and hiding the entire hole in the center ofthe holder with it.
Correct setting
Recommended size: 35 mm x 20 mm
The dimensions of the OptoLeaf roll are 35
mm in width and 10 m in length, and cutting it
into 20 mm in length is the right size.
20 mm

Set OptoLeaf horizontally whenviewed from the side
Wrong setting(1) An opening of the holeleads to the wrong result(2) Not nipping OptoLeaf may
cause OptoLeaf to move(3) Because of too large a size,
it cannot enter the leaf inlet(4)Warped OptoLeaf leads to the wrong result
Insert the leaf holder with the OptoLeaf side upward into the leaf inlet to loading it into the D-Meter mainunit.
At this moment, insertion should be performed as far as it will go.
If the leaf holder is not successfully inserted, correct measurement cannot be performed.

-8-

Instruction Manual

4．Before measurement
・ Measurement shall be performed as follows:(1) Zero adjustment (for the purpose of obtaining correct measurement results)* Perform measurement by inserting a transparent reference leaf.
* The results are saved even after the power is turned off. It is still recommended to performzero adjustment once after turning on the power to grasp the instrument state.
(2) OptoLeaf measurement* Insert OptoLeaf and perform measurement.
・ The OptoLeaf measurement flow is shown as follows:
START switch (red)1 second
Hold down the START switch (red) for
1 second to turn on the power
Power on
ADJUST switch (yellow)

Zero adjustment can beperformed anytime.

1 second
Insert a transparent ref. leaf and hold down the ADJUSTswitch (yellow) for 1 sec. to perform zero adjustment

Zero adjustment

START switch (red)Insert OptoLeaf and press the START switch(red) to start OptoLeaf measurement

OptoLeaf measurement

NoMeasurement end?

Yes
No operation is performed for 40 seconds, the power is automaticallyturned off.
Measurement end-9-

Instruction Manual5．Zero adjustment
For the purpose of obtaining correct measurement results, zero adjustment shall be performed before
OptoLeaf measurement.
A reference is established with use of a transparent reference leaf.
Place a transparent reference leaf on the leaf holder and insert the holder into the leaf inlet.
* Insertion shall be performed as far as it will go.
Next, hold down the ADJUST switch for 1 second, and the indication on the display panel changes asfollows:
Hold down ADUST sw.

1 sec.

Hold down the ADUST
switch (yellow) for 1 sec.

This is the indication of measurement start.
The ADJUST switch can be released.

The countdown to completion starts.

This is the indication of measurement completion.
Do not discharge the transparent ref. leaf until thispoint.

Note: (1) If the ADJUST switch is released before “---“ is displayed, zero adjustment is canceled. In such acase, the reference used at the last time is active.
(2) When zero adjustment is successfully completed, the reference value is saved in the memory,and it remains even after the power is turned off.
(3)If an error occurs during the process of zero adjustment, be sure to retry zero adjustment.
If an error occurs, zero adjustment is not completed. If OptoLeaf measurement is performed
under the status quo, the “E05: measurement error” occurs.

-10-Instruction Manual

6．OptoLeaf measurement
Select an OptoLeaf type with use of the leaf selection slide switch depending on OptoLeaf to bemeasured. (photo)* If the selected type of the leaf selection slide
switch does not match the actual type of OptoLeaf to
be measured, correct measurement cannot beperformed.

Place OptoLeaf to be measured on the leaf holder, insert the holder into the leaf inlet of the main unit,and press the START switch, and the information on the leaf selection slide switch is displayed and theabsorbance is displayed on the display panel.

Place OptoLeaf

Press START switch

Info on current leaf selection slide switch is displayed

At selecting “R-3D”

At selecting “Y-1W”

At selecting “O-1D”

Absorbanceisdisplayed.
Note: (1) If the selected type of the leaf selection slide switch does not match the actual type of OptoLeaf
to be measured, correct measurement cannot be performed.
(2) Zero adjustment and OptoLeaf measurement can be always performed while the power is in theON state.
(3) No operation is performed for 40 seconds, the power is automatically turned off.
(4) If OptoLeaf with excessive color fading (with the concentration close to a transparent referenceleaf) is measured, the measurement error occurs.

-11-Instruction Manual

7．Error message
When an error is displayed on the display panel, refer to the list of errors and perform thecorresponding remedy.
LOBAT

Indicates the error No. in 2
Indicates error occurrencedigits

Lights up when battery level is low (battery replacement required)

List of errors

ErrorNo.

Error type

Causeclassification

Remedy01

Measurement error(measured value beyond the range)

Operation

Perform measurement again

02

Zero adjustment/Measurement error(affected by external light)

Operation

Shut off external light03

Zero adjustment error(measured value beyond the range)

Operation

Insert transparent ref. leaf again

04

System error(failure of memory in which ref. data issaved)

Instrument

Manufacturer repair is required

05

Measurement error(zero adjustment not performed)

Operation

Perform zero adjustment

06

Measurement error(measured value below the range)

OperationPerform measurement again

07

Zero adjustment error(measured value beyond the range)

Operation

Insert transparent ref. leaf again

08

Measurement error(measured value beyond the range)

Operation

Perform measurement again

09

System error(failure of leaf selection slide switch)

Instrument

Manufacturer repair is required

20

System error(program failure)

Instrument

Repair is required-12-Instruction Manual

Warranty
This warranty shall apply based on the warranty provisions described below; fill in the date of purchase,the addresses, and the telephone numbers below.

－ Warranty Provisions －(1) In the event of product failure under normal operating conditions according to the instruction manual,
we will repair or replace this instrument without charge based on this warranty; therefore, please do
not hesitate to contact us.
(2) We shall bear no responsibility for any damage directly or indirectly caused by the failure of thisinstrument or the use of this instrument.
(3) The following cases require fee to repair:(1) Failure or damage caused by the customer’s inappropriate handling, such as dropping thisproduct and impact on this product during transportation or movement(2) Failure or damage caused by the customer’s misuse, improper modification, or repair(3) Failure or damage caused by natural disaster, such as fire, salt damage, gaseous damage,earthquake, lightning strike, or storm and flood damage, and external factors such as abnormalvoltage(4) This warranty is valid only in Japan.
(5) This warranty is not reissued. Please keep this warranty in a safe place.

-13-Instruction Manual

Product name/Model

OptoLeaf Measuring Instrument, D-Meter RYO-470

Product No.

Warranty period

Date of purchase
One year warranty from YYYY/MM/DDCompany
name or yourCustomer

nameAddress

Telephone No.

DealerShopAddress
Telephone No.

If a failure occurs during the period described above from the date of purchase, ask us for repair orreplacement by presenting the product and this warranty. This warranty is our promise to repair or replace theinstrument without charge based on the period and conditions specified in this document. This warranty shallnot limit the legal rights of the customer. For repair, replacement, or others even after the warranty period
expires, please do not hesitate to contact us.

For inquiries about unclear points or consultation, contact us as follows:
Taisei Fine Chemical Co., Ltd.
Function product Division
3-5-1, Nishi-shinkoiwa, Katsushika-ku,
Tokyo 124-8535, JAPANhttp://www.taisei-fc.co.jp-14-