USHIO PAS-110 User Manual

UshioAbsorbancePhotospectrometer

P i C O E X P L O R E R

User's Manual and Troubleshooting Guide

PA S-110

USHIO INC.

Contents of this User’s Manual may change without notice. Due to design improvements, and/or specication and app changes,

PiCOEXPLORER configuration may change without notice.

All company names and products names in this manual are the property of their respective trademark holders.

Thank you for purchasing the PiCOEXPLORER PAS-110 Absorbance Photospectrometer. This manual contains detailed descriptions, instructions for use, and specifications of this device. Please print out and store this manual in a safe place, and refer to as needed.

SAFETY NOTES

These safety notes are intended to help you use this device properly and safely. These notes contain essential and crucial instructions that must be followed at all times. Please read and understand these notes before reading the rest of the manual and guide.

SAFETY NOTES

DEVICE FEATURES

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WARNING

CAUTION

IMPORTANT

WARNING

This icon indicates a possible danger of loss of life or injury.

This icon indicates a possible danger of injury to personnel or physical damage.

This icon indicates important information concerning easy-to-make mistakes that can adversely affect operation and maintenance. Not following the instructions given could result in damage to the device.

l Do not use the device near medical equipment. The radio waves emitted by wireless

communication module could have an adverse effect on nearby pacemakers or electrical medical devices.

l Do not use near automatic doors, alarms, or other automatic electrical control devices.

The wireless communication module could cause malfunctioning in these devices.

l Do not use any USB cables that have been damaged or deformed. Doing so could result in smoke,

overheating, or fire.

l Carefully read and correctly follow the instruction in this user’s manual about the use of USB

cables. Replace any cable that looks defective or damaged.

l Do not wash the device with water, or disassemble or tamper with it in any way.

Doing so could result in electric shock, fire, or smoke.

l When powering the device thru a USB connector, use a PC with a limited-energy circuit USB

output, or an AC adapter with a limited-energy circuit used to power PCs.

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CAUTION

HANDLING OF PHOTOSPECTROMETER

l This device is for general analytic use. It was not designed for, nor should it be used for, medical

diagnostic purposes requiring very high levels of reliability and/or accuracy. USHIO INC. cannot be held responsible for any damages or liabilities resulting from the inappropriate use of this device for such purposes.

l To avoid eye injury, never look directly at the light source in the device. l When connecting and removing the USB cable, do so carefully; do not jam the connector or yank

the cord.

l Avoid dropping the unit or otherwise exposing to shocks or extreme forces.

HANDLING OF BATTERIES

l Follow all instructions of this manual on the handling and use of dry-cell batteries. l Use only the battery type specified (AAA type). Other types may damage the unit. l Insert batteries properly, matching the plus and minus ends to the equivalent connections inside

the unit.

l When replacing batteries, always replace all 3 batteries together. l Keep batteries out of the hands of small children. l If the unit will not be used for some time, remove the batteries before storage. Leaking batteries

can cause severe damage.

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CAUTION

HANDLING OF BATTERIES

l Do not expose batteries to heat or toss into open flames. l For the sake of the environment, dispose of used batteries responsibly and in accordance with

local regulations.

l The batteries that come packaged with the unit were inserted only for device testing purposes.

They may not last long; replace them as soon as possible.

HANDLING OF A BLUETOOTH DEVICE

l This is a Bluetooth low-energy compatible device. It cannot be connected with any other wireless

communication protocol.

l This device has been certified as having the proper wireless system for low-power electronic

communication. Do not remove the label of certification from the device. It is against the law to tamper with the device by disassembling, and/or altering operation. Doing so may result in criminal prosecution.

l This device communicates using a 2.4GHz frequency range. This range is also used by the

following wireless transmitters: commercial, scientific, and medical devices and other similar devices, wireless transmitters used to detect moving object on factory lines (which require licensing), low-power wireless transmitters which do not require licensing, and amateur wireless transmitters, all of the above designated herein as “other wireless transmitters”. Before using, make sure there is no such wireless transmitter in the vicinity which could cause interference. If you find that the operation of this device near another wireless transmitter is causing interference, increase the distance between the devices or if possible, turn off the other device.

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l Do not use in areas with high levels of dust, oil smoke, steam, damp, or high heat. l If the unit gets wet or submerged in liquid, immediately turn off and consult your vendor. l Dirt and other contaminants in the measuring chamber can cause erroneous readings. Before

using, make sure the measuring chamber is clean; if not, carefully wipe away all contaminants with a cotton swab or gauze/soft cloth.

IMPORTANT

l Do not swing the device by its strap. This could damage/loosen the water-resistant packing in the

device.

l Communications errors or reductions in communication speed may result when using the device

in the proximity of a 2.4GHz wireless LAN. Keep the device and the communicating tablet as close to each other as possible to avoid this.

LAWS AND REGULATIONS / APPROVED STANDARDS

FCC NOTICE

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and

this device must accept any interference received,

(2)

including interference that may cause undesired operation.

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ICES-003 NOTICE

This Class A digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe A est conformé à la norme NMB-003 du Canada.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

IC-NOTICE

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le

brouillage est susceptible d'en compromettre le fonctionnement.

CONTENTS

SAFETY NOTES

...........

DEVICE FEATURES .................................................................................................... 5

SAFETY NOTES

HARDWARE PACKAGE .................................................................................................... 5

HARDWARE COMPONENTS .................................................................................................... 6

BATTERY INSERTION .................................................................................................... 7

TAKING MEASUREMENTS

...........

1. Using the Top Screen ..........................................................................................10

2. Wireless Connection ............................................................................................11

3. Graphing the Standard Curve ............................................................13

3-1 Measuring Baseline Data .........................................................14

3-2 Measuring Known Concentrations .......................16

3-3 Graphing the Standard Curve ........................................18

3-4 Other Functions ......................................................................................19

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4. Taking Measurements.......................................................................................21

5. Displaying Previous Measurements .......................................23

6. Saving Data (to a CSV le) .........................................................................25

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7. Info Screen............................................................................................................................. 26

8. Save Screen .........................................................................................................................27

9. Help Screen ......................................................................................................................... 29

MAINTENANCE .................................................................................................30

TROUBLESHOOTING .................................................................................................31

WARRANTY AND AFTER-SERVICE

.................................................................................................33

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SPECIFICATIONS .................................................................................................34

DISCLAIMER .................................................................................................35

DEVICE FEATURES

注意書

＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿

l This device is a Bluetooth-enabled absorbance photospectrometer.

lDownload the special app on to a Bluetooth-enabled tablet to enable wireless access to the

measurements made by the photospectrometer.

lThe high sensitivity yet extremely compact design of this device is the result of USHIO's breakthrough

Silicone Optical Technology (SOT).

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lMeasurements can be made directly in a PCR tube without pipettes, eliminating worries about sample

contamination.

HARDWARE PACKAGE

The standard package includes:

(1) PAS-110 Unit .............................................................. 1

(2) Alkaline Dry-Cell Batteries (AAA Type) ............ 3

(3) Quick Start Guide (includes warranty). ............ 1

Quick Start Guide

注意書

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Quick Start Guide (includes warranty)

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PA S-110 Un i t

Alkaline Dry-Cell

Batteries (AAA Type)

HARDWARE COMPONENTS

Power Switch

Turns unit on and o.

Measurement Chamber Cover

Open this cover to insert PCR tube for sample measurement (we recommend a Watson 137-211c

0.2mL tube).

Status Light

lSteady Red:

check battery level

lSteady Purple:

powered and connected via Bluetooth Low Energy

l Blinking Red:

Low voltage (3.4V or less*)

lBlinking Blue:

measurement in progress

* Some battery types may fail

without rst blinking.

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Battery Cover

Open to insert batteries.

USB Interface Connector (micro USB)

For connection with a USB cable. Can be used to supply power instead of batteries. Not a data communication channel.

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BATTERY INSERTION

l The unit does not come with ready-to-use, fully charged batteries. If you find batteries already inserted,

be aware that these are for testing purposes only, and may already be near failure.

Batteries Needed: 3 AAA Type Dry-Cell Batteries

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CAUTION

Use only AAA type batteries. Use of other types may damage the unit.

Follow the 3 steps below when replacing batteries.

1. Open the battery cover on the back side of the unit.

2. Insert batteries, aligning the plus and minus (+ and - ) ends of the batteries with the plus and minus markings on the inside of the battery case.

3. Close the battery cover.

−

＋

＋＋

−

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Make sure battery cover is securely fastened. A loose cover may allow water to seep into the unit and cause damage.

CAUTION

Before opening the cover, wipe off any liquid on the outside to prevent seepage and possible damage.

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TAKING MEASUREMENTS

Do not let any sample liquid from the PCR Tube spill into the unit.

CAUTION

This could damage the optical unit.

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Follow the procedure outlined below for taking basic measurement readings.

1. Turn on unit power. The status light will turn red l.

* If battery level falls too low, the red light will begin blinking.

2. Open the measurement chamber lid and set PCR tube into the measurement chamber.

Firmly close the lid.

* Note that the tube lid

connector should fit snugly between the two guide projections at the back of the chamber.

3. Launch the tablet application

(PAS-110) by tapping the icon.

4. Make BLE connection.

(Refer to P11. 2. Wireless Connection.)

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(Refer to P10. 1. Using the Top Screen.)

Top Screen Connection Setting Screen

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TAKING MEASUREMENTS

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5. Draw a standard calibration curve.

(Refer to P13. 3. Graphing the Standard Curve)

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Drawing Standard Curve Screen

6. Measure sample concentration.

(Refer to P21. 4. Taking Measurements)

Standard Curve Graph Screen

7. Check previous measurements.

(Refer to P23. 5. Displaying Previous

Measurements)

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Concentration Measurement Screen Measurement History Screen

TAKING MEASUREMENTS

1. Using the Top Screen

The top screen displays the following buttons.

Bluetooth Connection Status

Unconnected

Battery Voltage Level OK

Battery Voltage Level Low

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Connection Setting Button

To connect to the hardware unit, goes to the connection setting screen (P11).

Measurement Button

Goes to the Measurement Screen to take measurements (P21).

Help Button

Goes to the Help Screen (P29).

Home Button

Returns to the Home Screen.

Illustration 1: Top Screen

Return Button

Go back to previous screen.

App History Button

Draw Standard Curve Button

Goes to the Draw Standard Curve Screen to allow creation of a standard calibration curve (P13).

Measurement History Button

Goes to the Measurement History Screen to allow inspection of previous measurements (P23).

Info Button

Goes to the Info Screen to show current device status (P26).

Save Button

Moves to the Save Screen (P27). On this screen you can also switch display languages between English and Japanese.

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TAKING MEASUREMENTS

2. Wireless Connection

Tap the Connection Setting Button on the top screen to move to this screen (see illustration 2-1).

③Bluetooth Device Address

Shows the last Bluetooth device connected to.

② Connect Button

Press to connect.

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① Device Search

Button

Search for devices to connect to.

Illustration 2-1: Connection Setting Screen

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TAKING MEASUREMENTS

(1) Tap Device Search Button ① to search for photospectrometer unit. If not detected, turn the

photospectrometer off and on, then tap the Device Search Button again. If the photospectrometer is found, its Bluetooth device address will be displayed as shown in illustration 2-3.

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Illustration 2-2:

Device Address Not Found

(2) Tap the device address that you wish to connect to.

The background color of the address will change, indicating selection.

(3) Tap the Connect Button

② to begin connecting.

(4) Once the connection is established, tap the Return Button to

return to the top screen.

Illustration 2-3:

Device Address Found

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Illustration 2-4:

Device Address Selected

TAKING MEASUREMENTS

3. Graphing the Standard Curve

When drawing a standard curve, first prepare a set of samples of known concentration.

The procedure is as follows:

1. measure baseline data;

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2. measure known concentration sample data;

3. check the results by graphing the data.

Before beginning the procedure, be sure to tap the Clear Button (3-4 (1)) to clear previous data.

CAUTION

The Clear Button is labelled

① in Illustration 3-11.

Tap the Standard Curve Button on the top screen to move to the Draw Standard Curve Screen (see Illustration 3-1).

① Input percentage

of LED output level

③ Begin Measure-

ment Button

④RGB Select

Button

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Illustration 3-1: Draw Standard Curve Screen ①

② Baseline data

input box

(Red dotted lines

show where up to 3 samples can be input.)

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3-1. Measuring Baseline Data

(1) Set the sample to be used for baseline concentration

measurement into the measurement chamber of the photospectrometer.

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(2) Set the LED optical output level by entering percentages into

the LED Output Level box

①. You can tap the box itself to

bring up a scrolling list of percentage values. Select the value you want and tap the OK Button to confirm.

(3) To begin baseline data measurement, first select a baseline

data input box by tapping on it. As shown in Illustration 3-3, this will put a black outline around the box.

Illustration 3-2:

Scrolling list of LED output levels

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Illustration 3-3.

Baseline data input box selected

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TAKING MEASUREMENTS

(4) Tap the Measure Button ③ to begin baseline measurement

(be sure the sample is in the photospectrometer). The measured valued will appear within the outlined box (see Illustration 3-4.)

At this time R, G, and B data are simultaneously measured.

When measurement is finished, the value will be displayed in white font. This data will be used to make the graph of the curve (refer to Page 18).

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(5) Tap the RGB Select Button to check that the baseline data

values for R, G, and B are not 65535. If the values show 65535, this means the measurement has saturated, and further absorbance measurements are not possible.

(6) If one of the RGB levels is saturated, return to step (2),

lower the LED output level in the input box, and measure again. If a change is made, select “Yes” when the Clear Data Confirmation Notice appears, as shown in Illustration 3-5, to clear the previous data.

(7) Once acceptable values have been obtained, the baseline

measurement procedure is done.

Illustration 3-4:

Measured value displayed in white

font

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Illustration 3-5:

Data Clear Conrmation Notice

TAKING MEASUREMENTS

3-2. Measuring Known Concentrations

Using the same Draw Standard Curve screen (Illustration 3-6), measure a series of samples of known concentrations.

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(1) Set a sample into the measurement chamber of the photospectrometer.

① Concentration

Units Selection Button

② Known Concen-

tration Data Input Area

(Always enter concentration values in ascending order in Input Areas 1→5.)

③ Known Concen-

tration Measurement Input Area

(Up to 3 measurements can be made on the sample, displayed inside the dotted red line.)

⑥ Standard Curve

Graph Display Button

④ Measurement

Button

⑤ Absorbance

Value Display (blue outline)

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Illustration 3-6: Draw Standard Curve Screen ②

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TAKING MEASUREMENTS

(2) Tap the Concentration Units Selection Button to choose the

units in which the measurements will be made (illustration 3-7). Press OK to confirm.

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(3) Tap the Known Concentration Data Input Area

② and input

the known concentration value.

(4) Tap the Known Concentration Measurement Input Area

select. A black outline will be displayed.

(5) Tap the Measure Button

④ to begin measurement. The

measured value will be displayed in white font.

(6) The Absorbance Value Display

⑤ will show the actual

calculated absorbance.

(7) When this measurement is finished, remove the current

sample in the photospectrometer, place the next sample in, return to step (1), and repeat the process.

③ to

Illustration 3-7:

Selection of Concentration Units

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(8) When all the samples have been measured, tap the Standard

Curve Graph Display Button

⑥ and confirm the graphed

results. The values displayed in white font (illustration 3-8) are the ones displayed on the standard curve (see Page 18). If you wish to a measurement from the graph, remove it by a long press on that data’s display box.

Illustration 3-8:

Results of Standard Curve

Measurement Procedure

TAKING MEASUREMENTS

3-3. Graphing the Standard Curve

(1) When you move to the Standard Curve Graph Screen, you will

see a display with the concentration on the X-axis and the absorbance on the Y-axis (Illustration 3-9).

① Least Squares Fit

Button

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(2) Tap the Least Squares Fit Button ① to

fit a least squares line to the data points (illustration 3-10). The R-squared values are displayed in the R2 Value area to indicate the degree of fit between the line and the data

(3) Use the RGB Selection Button

③ to

selectively display R, G, and B data points.

③ RGB Selection

Button

② R-squared

Display Area

Illustration 3-9:

Standard Curve Graph Screen

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Illustration 3-10:

Fitting a Line to the

Measured Data Points

TAKING MEASUREMENTS

3-4. Other Functions

This section describes miscellaneous functions of the app.

⑤ Graph Data Row

Selection Button

④ Graph Data Column

Selection Button

③Known Concentration

Data Input Area

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① Clear Button

Illustration 3-11:

Draw Standard Curve Screen

(1) Data Clear Function

Tap the Clear Button

① to clear all data

(2) Data Edit Button

Tap the Known Concentration Data Input Area, then

the Edit Button

② to directly edit the data values

(Illustration 3-12).

②Edit Button

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Illustration 3-12:

Directly Editing Data Values

TAKING MEASUREMENTS

(3) Graph Data Column Selection

Tap the Graph Data Column Selection Button ④ to select an entire column of displayed data

(illustration 3-13).

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Entire Data Column Selected

(4) Graph Data Row Selection

Tap the Graph Data Row Selection Button

Illustration 3-13:

⑤ to select an entire row of displayed data (illustration 3-14).

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Illustration 3-14:

Entire Graph Data Row Selected

TAKING MEASUREMENTS

4. Taking Measurements

Tap the Measure Button on the top screen to move to the Measurement Screen (illustration 4-1).

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① Title Input Box

⑦ RGB Selection

Button

④ Standard Curve

Graph Button

⑥ Concentration

Units Selection Button

② Measure Button

③ Least Squares

Fit Button

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⑤ CSV File Button

Illustration 4-1: Measurement Screen

(1) Set the sample to be measured into the measurement chamber.

(2) Enter the Title of the run into the Title Input Box

(3) Tap the Measure Button

② to begin measurement. The concentration will be calculated and displayed.

①.

If calculated concentration is not within range, “Out of range” will be displayed.

(4) Tap the Least Squares Fit Button

(5) Tap the Standard Curve Graph Button

(6) Tap the CSV File Button

⑤ to output the data values to a CSV file.

③ to switch to the Least Squares Linear Fit Display.

④ to check the data points on the standard curve graph.

Refer to page 25, Saving Data (to a CSV file).

Saved data can be rechecked at any time from the History Screen.

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(7) Tap the Concentration Units Selection Button, then Select RGB to display the RGB data (illustration 4-2).

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(8) Tap the RGB Selection Button

Illustration 4-2:

Concentration Units Selection

⑦ to switch between displays of R, G, and B data values (illustration 4-3).

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Illustration 4-3:

Example: Selected G Data Values

Displayed.

TAKING MEASUREMENTS

5. Displaying Previous Measurements

Press the Measurement History Button on the top screen to move to the Measurement History Screen (Illustration 5-1).

① Title Input Box

② Concentration

Units Selection Button

④ RGB Selection

Button

③ Least Squares

Fit Button

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(1) Tap the Title Input Box

Illustration 5-1: Measurement History Screen

①, and select the name of a previous measurement run you wish to display.

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(2) Tap the Concentration Units Selection Button and select RGB (illustration 5-1) to display the RGB sensor

data for that run.

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(3) Tap the Least Squares Fit Button

(4) Tap the RGB Selection Button

④ to switch between displays of R, G, and B data (illustration 5-3).

Illustration 5-2:

Concentration Units Selection

③ to switch to a Least Squares Linear Fit display of the data.

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Illustration 5-3:

Display of Measurement Data

TAKING MEASUREMENTS

6. Saving Data (to a CSV le)

CSV files are saved by default to the following internal storage folder on the Nexus 7.

computer\Nexus 7\Internal Storage\Android\data\com.ushio.pas110\files

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The CSV file format is as shown below.

Red Outline: Measurement data

Dotted Blue Outline: Standard curve data

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7. Info Screen

Tap the Info Button on the top screen to move to the Info Screen (illustration 7-1).

The Info Screen displays information on both the hardware photospectrometer and the mobile app.

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Illustration 7-1: Info Screen

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8. Save Screen

Tap the Save Button on the top screen to move to the Save Screen (illustration 8-1).

The Save Screen displays the Diagnostics and Function Settings Buttons.

① Diagnostics

Button

Tap to move to the Diagnostics Screen.

② Function

Settings Button

Tap to move to the Function Settings Screen.

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Illustration 8-1: Save Screen

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The Diagnostics Button ① is used by USHIO INC. to check device operation. Please do not use it.

Tap the Function Settings Button ② to move to the Function Settings Screen. On this screen you can switch the device language between English and Japanese (Illustrations 8-2,3).

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CAUTION

Please do not change the RGB sensor accumulation time on this screen.

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Illustration 8-2:

Function Settings Screen display set to English.

Illustration 8-3:

Function Settings Screen display set to

Japanese.

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9. Help Screen

Tap the Help Button on the top screen to move to the Help Screen (Illustrations 9-1,2).

This screen provides a weblink to the user’s manual, troubleshooting guide, and other relevant documentation. It also provides an email address for the Picoscope Support Desk. Contact the Support Desk if you have any further questions or concerns.

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Illustration 9-1: English Help Screen Illustration 9-2: Japanese Help Screen

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MAINTENANCE

Do not wipe the device with organic solvents.

CAUTION

Make sure the battery case cover is completely closed before cleaning.

Maintenance

◦ Device E xterior

Clean the device exterior with a clean, soft cloth wetted with a weak neutral detergent solution. Lightly wipe clean, then wipe again with a clean, dry cloth to remove all excess moisture.

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◦ Measurement Chamber

Do not use a stiff cloth to wipe the optical unit inside the chamber. Doing so can easily damage this sensitive component.

Remove dust and other contaminants from the optical unit by carefully wiping with a clean, soft cloth or cotton swab.

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◦ Long-Term Storage

If the device will not be used for a long time, securely fasten the measurement chamber cover, and remove all batteries (refer to section on Battery Insertion). Close and lock the battery cover, and store in a secure location away from direct sunlight, dust, dirt, or high temperature or humidity.

TROUBLESHOOTING

［Problem Indicator 1］No power to unit or soon shuts o󱐯

Possible Cause Solution

Batteries inserted incorrectly Check batteries, re-insert correctly.

Batteries low or dead Install fresh batteries (AAA x 3). Always change all 3 batteries

together. A standard USB cable can also be used to supply power.

Electric short or malfunction Possible damage due to shock of dropping or impact. Contact

your dealer.

［Problem Indicator 2 ］No Bluetooth connection or connection lost

Possible Cause Solution

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Auto-O function killed connection (No

Press power button on device to re-establish connection.

connection for 2 minutes, auto shut-o)

Device and receiver too far apart Connection best at distance of less than 10 meters. Ambient

conditions may impact transmission, so try to keep device and receiver as close as possible.

Interference from another device Electrical interference may occur due to transmission by wireless

LAN, microwave, or other Bluetooth devices in the vicinity. Move device and receiver away from such devices.

Too many possible receivers nearby Turn o power to other nearby receivers.

Physical object blocking signal between

Relocate device and receiver or remove object.

device and receiver

Device address not displayed on Connection Setting Screen

Please re-scan. Refer to Page 11, 2. Wireless Connection, in User’s Manual.

Software Malfunction Turn o both device and receiver, then turn on again. Data may

be lost when you do this.

Electrical short or malfunction inside device Possible damage due to shock of dropping or impact. Contact

your dealer.

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［Problem Indicator 3 ］Can't take readings (or reading results variable)

Possible Cause Solution

No Bluetooth connection See “No Bluetooth Connection” section immediately above.

Bluetooth connection to other device Re-connect to the photospectrometer.

Standard curve not correctly received Recheck data for errors. Refer to Page 13, 3. Graphing the

Standard Curve, in User’s Manual.

Error message: “Please redraw standard curve”

This message displayed when there is an ambient temperature dierence of ±10°C between time when curve was drawn and time of measurement. Adjust ambient temperature and restart measurement.

Screen freezes or display unstable Turn o device and receiver, turn on again. Data may be lost when

you do this.

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［Problem Indicator 3 ］Can't take readings (or reading results variable)

Possible Cause Solution

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Dirt or contaminant in measurement chamber

Clean chamber with a clean cotton swab or gauze. Do not use alcohol or organic solvent. Refer to Page 30, Maintenance, in User’s Manual.

Too little sample in tube Sample volume of 30μl or more required.

PCR Tube not inserted correctly Check whether lid is properly closed and no foreign objects inside

chamber. Reset tube in holder. Refer to Page 8 in User’s Manual.

PCR Tube dimensions do not t holder Switch to recommended tube size.

Device tilted Place device on a stable, level surface (less than a 10° tilt from

horizontal).

Sample concentration too strong Adjust output strength of LEDs. (Make sure you have used correct

volume and type of sample, and diluted correctly.)

Sample concentration too weak Make sure you have used correct volume and type of sample, and

diluted correctly.

Device cannot operate in current environment

Sample cannot be measured in current environment

Check operating parameters of device and use only in environments within the specied parameters.

Check specs of sample and only attempt measurement in environments within the specied parameters.

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Deterioration of LED or sensor Contact your dealer with details of how the device has been used.

USHIO PAS-110 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual