How it Works
Horiba
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D-54
Instruction Manual
226 pgs5.32 Mb0
Table of contents
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Horiba D-54 Instruction Manual

Preface

Thank you for purchasing one of the D-50 Series pH meters. This meter is designed with a compact body that can be held in one hand and features a water-resistant construction Note 1. It has a large-sized LCD display, which enables to use the varied functions by simple operations, and especially will be convenient to use on-location. Carefully read this manual before using the meter.
IP-67 standards
・ Dust does not get into internal parts. ・ Water does not flow into internal parts when the meter is submerged 1 m
below the surface between the water and the device of 5 ℃ or less.
of the water for 30 minutes, at a temperature differential

HORIBA's Warranty and Responsibility

Your meter is covered by HORIBA's warranty for a period of one (1) year, under normal use. Although unlikely, if any trouble attributable to HO RIBA should occur during this period, necessary exchange or repairs shall be conducted by HORIBA, free of charge. The warranty does not cover t he following:
・ Any trouble or damage attributable to actions or conditions specifically mentioned to be avoided in the operation manuals
・ Any trouble or damage attributable to use of the meter in ways or for purposes other than those described in the operation manuals
・ If any repairs renovations, disas se mb ly, etc. ar e pe rf or me d o n th is me te r b y any party other than HORIBA or a party authorized by HORIBA
・ Any alteration to the external appearance of this pH meter attributable to scratches, dirt, etc. occurring through normal use
・ Wear and tear to parts, the exchange of accessories, or the use of any parts not specified by HORIBA
HORIBA also shall not be liable for any damages resulting from any malfunctions of this product, any erasure of data, or any other uses of this product.

Unauthorized reprinting or copying of this operation manual

No unauthorized reprinting or copying of all or part of this operation manual is allowed. The utmost care has been used in the preparation of this operation manual. If, however, you have any questions or notice any errors, please contact the HORIBA customer service center printed on the back cover of this operation manual.
Copyright © HORIBA, Ltd. 2003

■ CE Marking

This product is in conformity with the following directives and standards:
Directives:The EMC Directives 89/336/EEC The Electrical Product Safety Directive 73/23/EEC
Standards: EN61326: 1997+A1:1998 (EMISSION: Class B, IMMUNITY Category: Minimum Require-
ment) EN61010-1: 2001
Installation Environment
This product is designed for the following environment.
- Pollution degree 2
- Measurement category Ⅰ

Precautions for use

WARNING:Do Not use the equipment for measurements within measurement categories
Ⅱ , Ⅲ and Ⅳ .

■ FCC Warning

This equipment has been tested and found to comply withthe 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.
I
Precautions for use

■ Type and Definition of Signal Words

For the safety use, the meter is equipped with the Warning Labels to alert every operator and user to the possible risk and danger. Before using understanding each message.
The meaning of signal words are as follows:
(WARNING)
This indicates an potentially hazardous situation which, if not avoided, will result in death or serious injury.
(CAUTION)
This indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert unsafe practices.

■ Safety Precautions

For the safety use, be sure to read the following precautions:
WARNING:
●Do not use any unspecified AC adapters.
Heat or fire may occur to cause fire or accidents.
●Do not disassemble or modify the meter.
Heat or fire may occur to cause fire or accidents.
CAUTION:
●Do not use the serial communication or AC adapter in the place that
may possibly contact with moisture. It may cause fire, electric shock, or breakage.
●Part of the electrode is made of glass; handle with care not to break it.
II
● Indication
Precautions for use
WARNING
This indicates an potentially hazardous situation which, if not avoided, will result in death or serious injury.
CAUTION
This indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert unsafe practices.
This mark indicates the operation requires a special care and attention.
This mark indicates to which the reader should go for reference.
HINT!
This mark indicates reference information.
III

■ Cautionary Items

● Precautions
●Do not give physical shock to the meter like dropping or hitting.
●Do not immerse the meter into alcohol, organic solvent, strong
acid, strong alkaline, and other similar solutions. The meter contains ABS resin, acrylic resin, and various rubber products in its body
●Do not use a hair-dryer for drying the meter. When the meter is
dropped into water or get wet, wipe it using soft cloth.
●Perform the key operation by the fingers, not by the hard object like
metal stick or rod.
●Be careful not to let water into the meter when the electrode connector
is empty or the AC adapter or serial communications cable has been connected. In those states, the meter is not water-proof
●To disconnect the electrode cable or interface cable, pull them out with
holding the connector part. Do not pull the cable part; it may cause a breakage.
●Do not remove the battery gasket or twist it.
●When opening the battery case, make sure that no foreign matter is
attached to the battery gasket.
●Do not use any unspecified batteries ; it may cause a breakage.
.
Precautions for use
.
● Location of use and storage
●The place which room temperature is at 0 ℃ to 45 ℃
●The place which relative humidity is under 80% and free from
condensation
Do not use or store the meter at;
●The place of much dust
●The place with strong vibration
●The place with direct sunlight
●The place with corrosive gas generation
●The place near from an air-conditioner
●The place with direct wind
● Move and Transportation of the meter
To transport the meter, use the packaging box at the delivery. Transportation by any unspecified packing methods may cause a breakage.
● Disposal
Standard solution used for the calibration must be under neutralization before the disposal. As for the disposal of the meter, treat it as an industrial waste.
IV

CONTENTS

1 Overview of the Meter . . . . . . . . . . . . . . . . . . . . 1
1.1 Package contents........................................................................... 1
1.2 Functions......................................................................................... 3
1.3 Part names ...................................................................................... 8
1.4 Explanation of display.................................................................... 9
1.5 Operation keys................................................................................ 12
1.6 Connecting the electrodes............................................................. 13
1.7 Inserting/replacing the dry-cell batteries ..................................... 16
1.8 Connecting the AC adapter ........................................................... 18
1.9 Using the protective cap (D-53/54/55)........................................... 19
2 Taking Measurements . . . . . . . . . . . . . . . . . . . . 21
2.1 Turning the meter ON/OFF............................................................. 21
2.2 Settings required before measurement........................................ 21
2.3 Measurement modes...................................................................... 22
2.4 Selecting the measurement modes .............................................. 24
2.5 Measuring pH.................................................................................. 25
2.6 Measuring ORP............................................................................... 35
2.7 Ion measurement (D-53)................................................................. 39
2.8 Conductivity measurement (D-54) ................................................ 49
2.9 Dissolved oxygen (DO) measurement (D-55)............................... 55
3 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.1 Data memory function.................................................................... 65
3.2 pH calibration history display ....................................................... 68
3.3 Displaying and setting the clock................................................... 72
3.4 Setting modes................................................................................. 74
3.4.1 Entering the Setting mode ............................................................ 74
3.4.2 Display and description ................................................................ 75
3.4.3 pH standard solution setting ......................................................... 77
3.4.4 Temperature compensation setting .............................................. 80
3.4.5 Auto data storage setting ............................................................. 81
3.4.6 pH calibration frequency setting ................................................... 83
3.4.7 Sample ID# setting ....................................................................... 84
3.4.8 Ion unit setting (D-53 ) .................................................................. 85
D-52/53/54/55 V
CONTENTS
3.4.9 Ion slope setting (D-53) ................................................................ 86
3.4.10 Conductivity unit setting (D-54 ) ................................................... 86
3.4.11 Temperature coefficient setting (D-54 ) ........................................ 87
3.4.12 DO salinity compensation setting (D-55 ) ..................................... 88
3.4.13 DO atmospheric pressure compensation setting (D-55 ) ............. 89
3.4.14 Maintenance mode ....................................................................... 89
4 RS-232C communications . . . . . . . . . . . . . . . . . 99
4.1 Cautions before use....................................................................... 99
4.2 Command list.................................................................................. 101
4.3 On-line operation commands........................................................ 104
4.4 Data request commands and responses...................................... 113
4.5 Communication example using the HyperTerminal.................... 126
5 Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
5.1 Connecting the printer................................................................... 129
5.2 Printer setting ................................................................................. 130
5.3 Printer output timing...................................................................... 131
5.4 Printing format................................................................................ 132
5.4.1 When the ENTER key is pressed in the Measurement mode ...... 132
5.4.2 When the manual data memory storage is performed in the
Measurement mode .................................................................................134
5.4.3 When the ENTER key is pressed in the Data Memory Call screen 134
5.4.4 When calibration or check is performed in the Calibration mode . 135
5.4.5 When the ENTER key is pressed in the calibration history display 137
5.4.6 Test printing format in the Maintenance mode ............................. 138
6 Maintenance and Troubleshooting . . . . . . . . . . 139
6.1 pH (ORP) electrode maintenance.................................................. 139
6.2 ION electrode maintenance ........................................................... 143
6.2.1 65XX-10C electrode maintenance ............................................... 146
6.3 Conductivity electrode maintenance............................................ 151
6.4 Dissolved oxygen electrode maintenance................................... 152
6.4.1 Field-use electrode ....................................................................... 152
6.4.2 Laboratory-use electrode ............................................................. 154
6.5 Troubleshooting ............................................................................. 156
6.5.1 Error message chart ..................................................................... 156
VI HORIBA
CONTENTS
6.5.2 More troubleshooting .................................................................... 166
7 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
7.1 pH measurement............................................................................. 174
7.2 mV (oxidation-reduction potential [ORP]) measurement............ 180
7.3 Ion measurement............................................................................ 186
7.4 Conductivity measurement............................................................ 190
7.5 Dissolved oxygen measurement................................................... 197
7.6 Specifications ................................................................................. 200
7.7 Default settings............................................................................... 202
7.8 Operation flowcharts...................................................................... 203
7.9 Pin layout of special cables......................................................... 207
7.9.1 RS-232C communications cable ................................................ 207
7.9.2 Cable for CITIZEN printer ............................................................. 207
7.9.3 Cable for SEIKO printer ................................................................ 207
7.10 Spare and optional parts.............................................................. 208
7.10.1 Spare parts list ........................................................................... 208
7.10.2 Options ......................................................................................... 215
D-52/53/54/55 VII
CONTENTS
VIII HORIBA
1 Overview of the Meter
This chapter explains the part names, how to connect the electrodes, how to replace the batter precautions when using the meter.
1.1 Package contents

1 Overview of the Meter

1.1 Package contents

ies, and
The following items are shipped with each HORIBA pH meter package.
Meter (main unit) 1 unit
Dry-cell batteries 2 pcs.
Strap 1 pc
D-52/53/54/55 1
1 Overview of the Meter
1.1 Package contents
Soft case 1 pc
Protective cap 1 pc (D-53,54,55)
Operation manual 1 book
To take measurements, you will need electrode(s). Refer to “7.10 Spare and optional parts” page 208 when purchasing the electrode(s).
2HORIBA
1.2 Functions
The D-50 Series features the following functions.
● Measurement items
1 Overview of the Meter

1.2 Functions

Items
pH
ORP (mV) ION
Conductivity
Dissolved oxygen
Temperature
Model
D-52 D-53 D-54 D-55
○ ○ ○ ○
○ ○ ○ ○
− ○ − −
− − ○ −
− − − ○
○ ○ ○ ○ −
pH electrode, pH standard solution
ORP electrode ION electrode,
Ion standard solution Conductivity electrode,
Conductivity standard solution
DO electrode
Required electrode/
standard solution
● Functions
An overview of the functions found on HORIBA D-50 Series is shown below.
Function Explanation
Data memory Enables a
maximum of 300 items to be stored.
pH repeatability check
Displays the difference between the calibration value and measured value after calibration.
Model
D-52 D-53 D-54 D-55
○ ○ ○ ○
○ ○ ○ ○
Page
No.
page 65
page 32
D-52/53/54/55 3
1 Overview of the Meter
1.2 Functions
Function Explanation
pH calibration history
display
Displays the date of calibration
, asymmetrical potential
and
sensitivity.
Relative mV display
Displays mV when the measured potential is shifted to 0 mV.
ION calibration history display
Displays date of calibration and the offset potential/ sensitivity.
Clock The date and time
are displayed.
Model
D-52 D-53 D-54 D-55
○ ○ ○ ○
○ ○ ○ ○
− ○ − −
○ ○ ○ ○
Page
No.
page 68
page 38
page 70
page 73
Auto Power OFF
Turns ON/OFF setting that automatically turns power OFF if no keys are touched
minutes.
RS-232C communications
for 30 Enables
communication with a computer, using RS-232C.
Printer output Prints the contents
of the memory (printer sold separately).
Commercial power supply
Enables the use of commercial power, using an AC adapter (sold separately).
○ ○ ○ ○
○ ○ ○ ○
○ ○ ○ ○
○ ○ ○ ○
page 94
page 99
page 129
page 18
4HORIBA
● Setting Items
1 Overview of the Meter
1.2 Functions
Function Explanation
pH standard solution setting
Enables standard solution used for calibration to be changed to N and U
S specification settings.
pH temperature compensation
Enables temperature compensation to be conducted in pH
easurement
M mode, either manually or using a
IST
s
Model
D-52 D-53 D-54 D-55
○ ○ ○ ○
○ ○ ○ ○
Page
No.
page 77
page 80
temperature sensor.
Auto data memory
Stores data automatically at an interval of 2 sec. to 24 hours.
pH calibration frequency setting
Sets the next calibration time according to
the number of measurements made after calibration.
Sample ID ID No. of the
sample
Ion unit Toggles between
g/L and mol/L.
○ ○ ○ ○
○ ○ ○ ○
○ ○ ○ ○
− ○ − −
page 81
page 83
page 84
page 85
Ion slope Displays the
valence of
− ○ − −
page 86
measured ion.
D-52/53/54/55 5
1 Overview of the Meter
1.2 Functions
Function Explanation
COND unit Toggles between
S/m and S/cm.
COND temperature coefficient
Automatically or manually sets a temperature coefficient for a sample.
DO salinity compensation
DO atmospheric pressure compensation
Compensates for salinity of sample.
Compensates for atmospheric pressure
at mea-
surement site.
Model
D-52 D-53 D-54 D-55
− − ○ −
− − ○ −
− − − ○
− − − ○
Page
No.
page 86
page 87
page 88
page 89
RS-232C communications and the printer cannot be used simultaneously.
6HORIBA
● Functions in Maintenance mode
1 Overview of the Meter
1.2 Functions
Function Explanation
LCD check Enables check for whether or not all LCD
.
Battery voltage
segments are displayed Enables simple check of battery voltage. page
check Temperature
display
Adjusts the display of the temperature sensor to the actual temperature.
calibration Auto Power OFF Sets the function that automatically turns the
power OFF if no keys are touched 30 minutes.
pH/ION CH setting
Changes pH/ION measurement channel. page
(D-53 only) Remaining data
Displays the remaining memory. page
memory
Page
No.
page 91
92 page
93
page 94
95
96
Data memory clear
Initializing settings
Deletes data in memory. page
96
Initializes all settings to the default values. page
97
Printing test Conducts a printing test. page
98
D-52/53/54/55 7
1 Overview of the Meter

1.3 Part names

1.3 Part names
The D-52/53/54/55 pH meters have the following parts:
Serial communication port
Display
Keys
AC connector
Temperature connector (CH2)*
Electrode connector (CH1)
Electrode connector (CH2)*
* The D-52 has CH1 only.
Dry-cell battery holder
Temperature connector (CH1)
8HORIBA
1.4 Explanation of display
1 Overview of the Meter

1.4 Explanation of display

Input channel
Error No., Data No. Year,
Status display
Measurement data, hour and minute
Calibration history
Part name Display Contents
Input channel Input channel 1
Measurement item
Temperature, month and day
HOLD
Electrode status
Second
Meter mode
Measurement unit
Cursor for selecting setting modes
Setting modes differ according to model
Input channel 2
Measurement item
Displayed when measuring mV Displayed when measuring pH
Displayed when measuring dissolved oxygen
Displayed when measuring conductivity
Displayed when measuring ions Displayed in mV Measurement
mode, when relative mV is being set
Error No. Displayed when an error is
generated
D-52/53/54/55 9
1 Overview of the Meter
1.4 Explanation of display
Part name Display Contents
Data No. Displayed when the data number
Status display Shows error number and data
has been set.
number. Displayed when AUTO data
memory is being performed.
Displayed when the serial communication is active.
Displayed when temperature compensation function or automatic temperature
−
−
compensation has been set. Displayed when NIST standard is
selected at pH standard solution. Displayed when US standard is
selected at pH standard solution. Displayed when custom standard
is selected at pH standard solution. Displayed during data memory
function (for 3 sec.). Displayed while data in memory is being called up and when manual data memory is being called up, or blinks when automatic data memory is being called up.
Displayed when a printer is connected. (Sometimes displayed when a computer is connected depending on the computer.)
−
Displayed during manual temperature compensation
. Not displayed during automatic temperature compensation
.
10 HORIBA
1 Overview of the Meter
1.4 Explanation of display
Part name Display Contents
HOLD Displayed while the data is held
(HOLD status). Blinks during measurement or calibration.
Electrode status (Only in pH Measurement mode)
Not displayed: Normal Blinking: Cleaning is needed.
Constant display: Replacement
time is approaching.
Calibration history
Calibration history display: Displayed after calibration for pH and ION electrodes as calibration history.
When no calibration data is available
: Displayed when no calibration has been performed for pH and ION electrodes.
Meter mode Displayed when in Measurement
mode
.
Displayed when in Calibration mode
.
D-52/53/54/55 11
1 Overview of the Meter

1.5 Operation keys

1.5 Operation keys
This section describes the functions of the keys.
Name Description
MEAS key Returns to the Measurement
mode. Starts measurement.
MODE key Selects measurement item.
SET key Selects setting item.
CAL key Enters the Calibration mode.
Starts calibration.
UP key Executes the data memory
function. value
ENTER key Establishes the setting. DOWN key Calls up data memory.
Decreases numerical value.
CAL DATA key
ON/OFF key
The automatic power-off function is a default setting for this meter. The power is automatically turned OFF if no
Calls up calibration data.
Turns ON/OFF the power. This key takes effect only after pressed for one second to prevent accidental operation.
Increases numerical
.
operation is performed 30 minutes.
after a period of approximately
12 HORIBA
1.6 Connecting the electrodes
Connect the electrodes to the meter using the following procedure
・Do not allow any water to come into contact with the
connector. ・Do not touch the connector with uncleaned hands. ・Hold the metal portion when turning the electrode
conenctor
The following connectors are used depending on electrode
:
.
type:
1 Overview of the Meter

1.6 Connecting the electrodes

CH1 Electrode
connector: Temperature
connector:
CH2 Electrode
connector:
Temperature connector:
Connect the pH/ORP electrode to CH1. Connect the ion/conductivity/DO electrode to CH2.
pH/ORP electrode
Temperature electrode for CH1
ION electrode (D-53) Conductivity electrode (D-54) DO electrode (D-55)
Temperature electrode for CH2
D-52/53/54/55 13
1 Overview of the Meter
1.6 Connecting the electrodes
● Electrode connector (G-R electrode)
Ion/Conductivity/DO electrode
O-ring
1. Insert the electrode connector, making sure to
align the connector grooves with the pins in the connector port on the main unit (see photo, ① ).
pH/ORP electrode
Do not push the electrode with undue force when the pins are not properly aligned.
2. Push the electrode connector into the connector
port while turning it clockwise, following the grooves (see photo, ① and ② ).
3. Push the connector cover over the connector
(see photo, ③ ), being careful to push it straight on without turning it.
The meter will be waterproof only if this cover is placed properly over the connector.
14 HORIBA
● Temperature connector
1. Insert the temperature connector into the jack on
the main unit until the O-ring on the electrode cannot be seen at all (see photo, ④ ).
The meter will not be waterproof if the electrode is not inserted properly.
When the temperature electrode is not connected (or is connected improperly), the compensation (ATC) will be 25°C.
1 Overview of the Meter
1.6 Connecting the electrodes
automatic temperature
D-52/53/54/55 15
1 Overview of the Meter

1.7 Inserting/replacing the dry-cell batteries

1.7 Inserting/replacing the dry-cell batteries
The dry-cell batteries are not placed in the meter before shipping. To insert the batteries, follow the procedure below Note that if “ERR 2” appears on the display while using the meter, teries is running low. When this occurs, replace the bat- teries promptly. Dry-cell battery type: AA alkaline
・Insert the batteries, paying attention to the orientation
.
it indicates that the charge of the dry-cell bat-
of the battery poles (+ and -).
・Removing the batteries will erase the clock data. To
save the clock data, remove and replace the batteries while the meter is connected to the AC adapter separately)
・Replace the batteries only after turning the power OFF.
Any saved data will not be lost.
・When opening and closing the battery cover, be care-
ful that no water gets inside the meter.
・Check that the rubber packing is not twisted and no
foreign matter is stuck to it. Otherwise the meter may no longer be waterproof.
The life of the batteries included with the meter may be short because the batter check before shipping.
.
ies were used for the operation
(sold
To insert/replace the batteries
1. Loosen the screw of the battery cover by using a
coin or screwdriver, etc. The cover is constructed so that the stop screw cannot be completely removed and lost.
2. Pull up the screw, and remove the battery cover
by sliding it out.
16 HORIBA
1 Overview of the Meter
1.7 Inserting/replacing the dry-cell batteries
3. If there are old batteries inside, remove them.
4. Place the new batteries in the meter, verifying
the orientation of the poles (“+” and “-”).
5. Check that the rubber packing is not twisted and
no foreign matter is stuck to it.
6. Insert the edge of the battery cover into the
grooves on the meter, and then tighten the stop screw.
Edge
Tighten
Grooves
Main unit
Stop screw
Battery cover
Batteries
Rubber packing
Check that the rubber packing is twisted and no foreign matter is stuck to it. Otherwise the meter may no longer be waterproof.
Battery life
The table below shows the battery life of alkaline batteries
during continuous use. The life of manganese
batteries is about a half of the alkaline batteries.
Model Battery life
D-52, 53, 55 approx. 200 hours D-54 approx. 100 hours
D-52/53/54/55 17
1 Overview of the Meter

1.8 Connecting the AC adapter

1.8 Connecting the AC adapter
When using the meter with an AC power supply, use the designated AC adapter (option).
AC adapter specifications
Supply voltage range 100 - 200 V AC Frequency range 50/60 Hz Current rating Max 370 mA Class2 Power supply Equipment pro-
tected by double insulation
Indoor use only Supply voltage fluc-
tuations allowed up to
± 10%
.
AC adapter connector
When the AC adapter is connected, the meter is no longer
waterproof.
Be careful not to let water get into the meter.
18 HORIBA

1.9 Using the protective cap (D-53/54/55)

1.9 Using the protective cap (D-53/54/55)
For meters having two electrode connector channels, be sure to use the protective cap when using only one channel, in order to protect the unused connector
Protective cap
1 Overview of the Meter
D-52/53/54/55 19
1 Overview of the Meter
1.9 Using the protective cap (D-53/54/55)
20 HORIBA
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