Horiba Scientific LAQUA-PD210, LAQUA-PD220 Instruction Manual

• Preface

This manual describes the operation of the following instrument.

Brand: LAQUA

Series name: LAQUA 200 Series Handheld Water Quality Meter

Model: LAQUA-PD210, LAQUA-PD220

Model description: pH/ORP/Dissolved Oxygen Meter

Be sure to read this manual before using the product to ensure proper and safe operation of
the product. Also, safely store the manual so it is readily available whenever necessary.
Product specifications and appearance, as well as the contents of this manual are subject to
change without notice.

• Warranty and responsibility

HORIBA Advanced Techno Co., Ltd. warrants that the product shall be free from defects in
material and workmanship and agrees to repair or replace free of charge, at option of HORIBA
Advanced Techno Co., Ltd., any malfunctioned or damaged product attributable to
responsibility of HORIBA Advanced Techno Co., Ltd. for a period of Three (3) years from the
delivery unless otherwise agreed in a written statement. In any one of the following cases,
none of the warranties set forth herein shall be extended:

• Any malfunction or damage attributable to improper operation

• Any malfunction attributable to repair or modification by any person not authorized by
HORIBA Advanced Techno Co., Ltd.

• Any malfunction or damage attributable to the use in an environment not specified in this
manual

• Any malfunction or damage attributable to violation of the instructions in this manual or
operations in the manner not specified in this manual

• Any malfunction or damage attributable to any cause or causes beyond the reasonable
control of HORIBA Advanced Techno Co., Ltd. such as natural disasters

• Any deterioration in appearance attributable to corrosion, rust, and so on

• Replacement of consumables

HORIBA Advanced Techno Co., Ltd. SHALL NOT BE LIABLE FOR ANY DAMAGES
RESULTING FROM ANY MALFUNCTIONS OF THE PRODUCT, ANY ERASURE OF DATA,
OR ANY OTHER USES OF THE PRODUCT.

• Trademarks

• Microsoft, Windows, Windows Vista are registered trademarks or trademarks of Microsoft

Corporation in the United States and other countries.

Other company names and brand names are either registered trademarks or trademarks of the
respective companies. (R), (TM) symbols may be omitted in this manual.

CODE:M003658-3200793612-GZ0000553861

March,2019 © 2019 HORIBA Advanced Techno Co., Ltd.

I

Regulations

• Regulations

• EU regulations

• Conformable standards

This equipment conforms to the following standards:

EMC: EN61326-1

RoHS: EN50581

Warning: This product is not intended for use in industrial environments. In an
industrial environment, electromagnetic environmental effects may
cause the incorrect performance of the product in which case the
user may be required to take adequate measures.

Class B, Basic electromagnetic environment

9. Monitoring and control instruments

• Information on disposal of electrical and electronic equipment and disposal of batteries and accumulators

The crossed out wheeled bin symbol with underbar shown on the product or accompanying

documents indicates the product requires appropriate treatment, collection and recycle for
waste electrical and electronic equipment (WEEE) under the Directive 2012/19/EU, and/or

waste batteries and accumulators under the Directive 2006/66/EC in the European Union.
The symbol might be put with one of the chemical symbols below. In this case, it satisfies
the requirements of the Directive 2006/66/EC for the object chemical. This product should not

be disposed of unsorted household waste. Your correct disposal of WEEE, waste batteries and

accumulators will contribute to reducing wasteful consumption of natural resources, and

protecting human health and the environment from potential negative effects caused by

hazardous substance in products.
Contact your supplier for information on applicable disposal methods.

• Authorised representative in EU

HORIBA UK Limited

Kyoto Close, Moulton Park,

Northampton, NN3 6FL, United Kingdom

II

Regulations

• FCC rules

FCC Compliance Statement

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 (2) this device must accept

any interference received, including interference that may cause undesired operation.

Responsible Party for FCC matter

HORIBA Instruments Incorporated

Head Office

9755 Research Drive

Irvine, California 92618 USA

[phone]

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.

Any changes or modifications not expressly approved by the party responsible for compliance

could void the user's authority to operate the equipment.

• Korea certification

• Taiwan battery recycling marks

III

Regulations

• China regulation

标记的意义

Meaning of Marking

本标记适用在中华人民共和国销售电器电子产品，标记中央的数字

表示环境保护使用期限的年数。( 不是表示产品质量保证期间。)
只要遵守这个产品有关的安全和使用注意事项，从制造日开始算起
在这个年限内，不会给环境污染、人体和财产带来严重的影响。请
不要随意废弃本电器电子产品。

This marking is applied to electric and electronic products sold in

the People's Republic of China. The figure at the center of the
marking indicates the environmental protection use period in
years. (It does not indicate a product guarantee period.) It
guarantees that the product will not cause environment pollution
nor serious influence on human body and property within the
period of the indicated years which is counted from the date of
manufacture as far as the safety and usage precautions for the
product are observed. Do not throw away this product without any
good reason.

IV

Regulations

产品中有害物质的名称及含量

Name and amount of hazardous substance used in a product

有害物质

Hazardous substances

部件名称

Unit name

本体

Main unit

电池

Battery

AC 适配器　

AC adopter

电缆　

*2

Cable

支架

*2

Stand

打印机

*2

Printer

电极

Electrode

本表格依据 SJ/T 11364 的规定编制。

This form is prepared in accordance with SJ/T 11364.

○ : 表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要

求以下。

Denotes that the amount of the hazardous substance contained in all of the

homogeneous materials used in the component is below the limit on the acceptable
amount stipulated in the GB/T 26572.

×: 表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的

限量要求。

Denotes that the amount of the hazardous substance contained in any of the
homogeneous materials used in the component is above the limit on the acceptable
amount stipulated in the GB/T 26572.

铅

Lead
(Pb)

*1,*2

*2

汞

Mer­cury
(Hg)

× ○○ ○ ○ ○

× ○○ ○ ○ ○

× ○○ ○ ○ ○

× ○○ ○ ○ ○

○○○ ○ ○ ○

× ○○ ○ ○ ○

× ○ × ○○ ○

镉

Cad­ mium
(Cd)

六价铬

Hexa­valent
chromium
(Cr (VI))

多溴联苯

Poly

bromobi-

phenyl

(PBB)

多溴二苯醚

Poly
bromo-

diphenyl

ether

(PBDE)

*1: 本部件的环保使用期限为 10 年。　The environmental protection use period

of this product is 10 years.

*2: 选配件　Optional products

V

For Your Safety

• For Your Safety

• Hazard classification and warning symbols

Warning messages are described in the following manner. Read the messages and follow the

instructions carefully.

• Hazard classification

This indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury. This is to be
limited to the most extreme situations.

This indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

This indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury. It may also
be used to alert against unsafe practices.

• Warning symbols

Description of what should be done, or what should be

followed.

VI

Description of what should never be done, or what is

prohibited.

For Your Safety

• Safety precautions

This section provides precautions for using the product safely and correctly and to prevent

injury and damage. The terms of DANGER, WARNING, and CAUTION indicate the degree of
immanency and hazardous situation. Read the precautions carefully as it contains important
safety messages.

• Instrument and electrode

Do not disassemble or modify the instrument. Otherwise, it may heat up or be ignited

resulting in a fire or an accident.

Harmful chemicals

Some electrodes are used with hazardous standard solutions. Handle them with care.

The internal solution of pH electrode is highly concentrated potassium chloride (3.33
mol/L KCl)
hydroxide (KOH). If the internal solution comes in contact with the skin, wash it off
immediately. If it gets into the eyes, flush with plenty of water and then consult a
doctor.

Broken glass

Broken glass may cause injury. The outer tube and tip of an electrode are made of

glass. Handle them with care.

Do not use the phono jack under wet or humid conditions. Otherwise, it may cause a

fire, electric shock, or breakage.

and internal solution of DO electrode is highly concentrated potassium

VII

For Your Safety

• Battery

Keep batteries out of reach of children. If someone accidentally swallows a battery,

consult a doctor immediately.

If alkaline fluid from a battery gets into the eyes, do not rub the eyes, rinse with clean

water immediately and then consult a doctor. Contact with alkaline fluid could cause
blindness.

Do not put batteries in a fire, expose to heat, disassemble or remodel.
Doing so can case fluid leakage, overheating or explosion.

VIII

Product Handling Information

• Product Handling Information

• Operational precautions (instrument)

• Only use the product including accessories for their intended purpose.

• Do not drop or physically impact the instrument.

• The instrument is made of solvent-resistant materials but that does not mean it is resistant
to all chemicals. Do not expose the instrument in strong acid or alkali solution, or wipe with
such solution.

• If the instrument is dropped into water or gets wet, wipe it using soft cloth. Do not heat to
dry it.

• The instrument has a dust-proof and waterproof structure i.e., the instrument does not
malfunction even when immersed in water of 1 m depth for 30 minutes. This does
guarantee non-destructive, trouble-free, dust-proof, and waterproof performance in all
situations.

• When replacing the batteries or when a serial cable connected, the instrument does not
have the dust-proof and waterproof performance. The dust-proof and waterproof
performance is maintained only when the covers are attached correctly.

• After replacing the batteries or removing the serial cable connected, make sure that the
waterproof gasket attached to the cover is not deformed or discolored, or has foreign
matter adhering to it. If the waterproof gasket is deformed, discolored or has foreign matter
adhering to it, dust could get inside, water leaks could occur that could lead to instrument
malfunction.

• To disconnect an electrode or serial cable, hold the connector and pull it off. If you pull at
the cable, it may cause breakage.

• The phono jack communication between the instrument and a personal computer (referred
to as PC in the rest of this document) may fail because of environmental conditions, such
as electromagnetic noise.

• Do not replace the batteries in a dusty place or with wet hands. Dust or moisture could get
inside the instrument, possibly causing instrument malfunction.

• Do not use an object with a sharp end to press the keys.

• If the power supply is interrupted while measurement data is being saved in the instrument,
the data could be corrupted.

• A NiMH rechargeable battery can be used in this instrument.

• Operational precautions (battery)

• Do not short circuit a battery.

• Position the + and  side of the battery correctly.

• When the battery has depleted or the instrument will not be used for a long time, remove

the batteries.

• Of the specified battery types, make sure to use two batteries of the same type.

• Do not use a new battery together with a used battery.

• Do not use a fully charged nickel-metal hydride battery together with a partially charged
battery.

• Do not attempt to charge a non-rechargeable battery.

IX

Product Handling Information

• Environmental conditions for use and storage

• Temperature: 0 °C to 45 °C

• Humidity: under 80% relative humidity and free from condensation

• Avoid the following conditions:

• Strong vibration

• Direct sunlight

• Corrosive gas environment

• Locations close to an air-conditioner

• Direct wind

• Transportation

When transporting the instrument, repackage it in the original package box. Otherwise, it may

cause instrument damage.

• Disposal

• Standard solution used for the calibration must be under neutralized before the disposal.

• When disposing of the product, follow the related laws and regulations of your country for
disposal of the product.

X

Contents

■ Product Overview ............................................................. 1

● Package Content........................................................ 1

● Key Features .............................................................. 2

● Product components................................................. 3

■ Basic operations ............................................................... 7

● Mode and measurement............................................ 9

■ Calibration ....................................................................... 11

● pH Calibration ...........................................................11

● ORP/mV Calibration................................................. 13

● DO Calibration.......................................................... 15

● Temperature Calibration ......................................... 21

■ Data .................................................................................. 23

● Data capture and storage........................................ 23

● Data transfer............................................................. 24

■ Setup ................................................................................ 25

● P1 pH setup .............................................................. 25

● P1 DO setup ............................................................. 29

● P2 Data setup ........................................................... 33

● P3 General setup ..................................................... 40

● P4 CLK setup ........................................................... 49

■ Maintenance and storage .............................................. 54

● Maintenance and storage of the instrument ......... 54

XI

Contents

● Maintenance and storage of electrodes ............... 55

■ Error messages and trouble shooting .......................... 57

■ Appendix ......................................................................... 62

● Appendix 1 ............................................................... 62

● Appendix 2 ............................................................... 65

● Appendix 3 ............................................................... 65

XII

Product overview

1

2

3

5

4

■ Product Overview

This section describes the package content, key features and product components of LAQUA
PD200 handheld meters.

● Package Content

After opening the carry case, remove the meter and check for damage on the instrument and
confirm that the standard accessories all exist. If damage or defects are found on the product,
contact your dealer.
LAQUA PD200 Series Handheld meter and meter kit include the following items:

S.NO. Name

1 Instrument

2 Instruction manual

3 2 AA batteries

4 Electrodes

5 Calibrating solutions

1

Product overview

● Key Features

• IP67 water ingress, dust-proof, shock-resistant, anti-slip meter housing.

• Large monochrome LCD (50 x 50 mm) with white LED back lighting.

• Built-in electrode holder (up to 2 electrodes).

• Foldable meter stand.

• Simple user interface and single parameter display.

• 500 (for PD210) / 1000 (for PD220) data memory.

• Automatic Temperature Compensation (ATC) with temperature calibration.

• Adjustable auto shut-off time (1 to 30 minutes).

• Auto-hold / Auto stable / Real-time measurement modes with stability indicator.

• Powered by 2 x AA batteries.

• Real-time clock (only for PD220).

• PC (standard USB) / Printer (25 pin serial) connection via 2.5 mm diameter phono jack.

2

Product overview

● Product components

No Name Function

1 Monochrome LCD Displays the measured value

2 Operation keys Used for instrument operation

3 Electrode connector Connect to the BNC connector of the electrode

4 Temperature connector (T) Connect to the temperature sensor of the electrode

5 Battery cover Open/close to insert/remove batteries

6 Electrode holder Hold the electrode to carry with the instrument

7 Meter stand

8 Serial connector Connects the serial cable and printer cable

Open stand to place the meter at an inclined position on a
flat surface

3

Product overview

● Display

No Name Function

1 Status Icon

2 Parameters Displays the measured parameters like pH, RmV, and DO

3

4

Temperature display

5

area

Measured value, set

6

item display area

7

Displays the current operation mode (Setup, Calibration,
Measurement and Data mode)

Stability indicator shows value is stable for documentation in
Auto Stable and Auto Hold modes

Appears when the measured value display is stable and fixed in
auto-hold mode

Displays the measured temperature

Displays the measured value and the set value

Indicates electrode sensitivity level

8

9 Indicates data being transfered to the printer or computer

10 Displays the unit for the measurement parameter

11 Displays the battery level

Indicates error situation

4

● Battery level display

100% battery life

50% battery life

20% battery life

Batteries are weak and need replacement. Refer “ BATT LOW ” (page 57) to
solve this

● Electrode sensitivity level

Electrode sensitivity above 95%(excellent)

Electrode sensitivity between 85% to 95% (very good)

Electrode sensitivity between 80% to 85%(good). Refer “ SLPE ERR ” (page

57) to solve this

Product overview

5

Product overview

● Keypad operation

Keypad Name Function

CAL key

MEAS key

DATA key Switches from the measurement mode to the data mode.

MODE key In the measurement mode, changes measurement parameters.

SET key Switches from the measurement mode to the setup mode.

ENTER key

UP key

DOWN key

POWER key Powers ON/OFF the instrument.

Switches from the measurement mode to the calibration mode.
Starts calibration in the calibration mode.

Switches the operation mode to the measurement mode.
Releases the fixed measurement value mode in the auto hold
mode and begins a fresh measurement.

Determines the selection or setup.
Saves data in the measurement mode and calibration mode.

In the setup mode, navigates between various setups.
Selects preferred option in some setup screens.
Increases or decreases selected digit when entering numbers.

6

Basic operations

Note

■ Basic operations

This section describes function and basic operation method of each part of LAQUA PD200

handheld meter.

● Turning on the instrument

Inserting the batteries

This instrument is operated by batteries. You can use AA

alkaline batteries or AA Ni- MH chargeable batteries.
Perform the following procedure to insert batteries in the
instrument.

1. Unscrew the battery cover on the back of the
instrument counter-clock wise to unlock the bat­tery cover.

2. Remove the battery cover and set the batteries

inside.

3. Replace battery cover.

4 . S c r e w t h e b a t t e r y c o v e r o n t h e b a c k

of the instrument clockwise to lock the battery
cover.

• Do not replace the batteries in a dusty place or with wet hands. Dust or moisture could get
inside the instrument and possibly cause an instrument malfunction.

• Do not short-circuit a battery.

• Note polarity as shown in the battery compartment.

• When the battery has depleted or the instrument is not used for a long time, remove the
batteries.

• Of the specified battery types, make sure to use two batteries of the same type.

• Do not use a new battery together with an used battery.

7

Basic operations

Electrode connector

Temperature jack (T)

● Connecting an electrode

To perform calibration/ measurement, it is necessary to use the appropriate electrode for

measurement parameter. Recommended electrodes for various sample are listed in our
product catalog. Use the following procedure to correctly connect the electrode to the
instrument:

1. Insert the electrode connector by fitting its groove with the connector pin of the instrument (refer below table).

2. Turn the electrode connector clockwise by following the grooves.

3. Slide the connector cover on the connector.

4. When using a combination electrode equipped with a temperature sensor, insert the temperature jack (T) to the ATC socket on the meter.

CH1 CH2

pH Electrode DO Electrode

8

Basic operations

● Mode and measurement

● Changing the operation mode

You can change the operation mode to four available modes depending on the purpose of use.

The status icon indicates the current mode.

Icon Name Function

Setup mode Perform various setup functions.

Calibration

mode

Measurement

mode

Data mode Performs data setup. Displays the saved data.

You can change the operation mode using the corresponding key:

• Measurement mode: Press the key to change to the measurement mode.

• Calibration mode: In the measurement mode, press the key to change to the
calibration mode.

• Data mode: In the measurement mode, press the key to change to the data mode.

• Setup mode: In the measurement mode, press the key to change to the setup mode.

Performs calibration.

Performs measurement.

9

Basic operations

● Changing the measurement parameter

This instrument measures multiple parameters. For measurement, an electrode corresponding

to the measurement parameter is required. In the measurement mode, the measurement

parameter can be changed by pressing the key.

10

pH calibration

Note

Tip

■ Calibration

This section describes the basic calibration method using LAQUA PD200 handheld meter, pH
electrode and DO electrode.

● pH Calibration

Calibration is necessary for accurate pH measurement. To perform pH calibration, follow the
procedure detailed below.

Prerequisites

• Clean the pH electrode with DI (deionized) water and wipe it with tissue paper.

• Switch on the PD meter and plug in the pH electrode.

• Prepare buffer solution required for calibration.

• Keep the meter in pH measurement mode.

• Dip the pH electrode at least 3 cm in the buffer solution.

• Perform two-point calibration using:
pH 7 and 4 for acidic sample.
pH 7 and 10 for alkaline sample.

• Perform three-point calibration using pH7, 4 and 10 if you are unsure of the expected

sample pH value. It is recommended to calibrate with pH7 first.

• Default buffer setup is BUFF USA. If you want to change to BUFF NIST or BUFF DIN,

refer to “P 1.1 Buffer selection” on page 26.

• To abort an ongoing calibration process at any point of time, press the key.

• It is recommended to clear the previous calibration data before performing calibration. For

erasing the calibration data, refer to “P 1.3 Erase calibration data” on page 28.

11

pH calibration

Note

Calibration

1. After placing the pH electrode in the buffer solution, press the key.

2. The selected buffer standard appears on the meter screen and meter starts checking

various calibration values with a blinking on screen.

3. Wait for the to stabilize (stable calibration reading).

4. Press the ENT key to confirm and save calibration data.

5. Meter displays DONE indicating end of the pH calibration procedure.

6. Repeat for other calibration points as required.

If you want to know previous calibrated values, press the key when you are in the CAL

mode.The display scrolls through the calibrated values and indicates slope and offset values.

12

ORP calibration

Note

Tip

● ORP/mV Calibration

Calibration is necessary for accurate ORP measurement. To perform ORP calibration, follow
the procedure detailed below:

Prerequisites

• Clean the ORP electrode with DI (deionized) water and wipe it with tissue paper.

• Switch on the PD meter and plug in the ORP electrode.

• Prepare buffer solution required for calibration.

• Ensure that the meter is in mV measurement mode.

• Dip the ORP electrode into the standard solution ensuring that the solution level is at least

3 cm from the electrode tip.

• Absolute value measurement mode and relative value measurement mode are the two

types of measurement mode available for ORP (mV) measurement.

• In absolute value measurement mode, the handheld meter displays the actual voltage

value.

• In relative value measurement mode, user can adjust the absolute mV value by calibration.

If the mV value is adjusted, the meter automatically indicates relative mV value as RmV.
The adjustment mV is applied as an offset to the absolute mV value.

• In the relative mV mode, the absolute mV value can be adjusted by ± 200 mV.

To abort an ongoing calibration process at any point of time, press the key.

13