horiba NAVI F-51 User manual

■Preface Thank you for purchasing the F-51 pH meter.
This meter has a large-sized LCD display, which enables to use the
varied functions by simple operations, and especially will be
convenient to use in laboratory.
Carefully read this manual before using the meter.
■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 HORIBA should occur during this period, necessary exchange or
repairs shall be conducted by HORIBA, free of charge. The
warranty does not cover the 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, disassembly, etc. are performed
on this meter by any party other than HORIBA or a party
authorized by HORIBA
• Any alteration to the external appearance of this 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

Precautions for use
I
■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
Requirement)
EN61010-1: 2001
Installation Environment
This product is designed for the following environment.
- Pollution degree 2
- Measurement category Ⅰ
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 b e r e q u i r e d t o
correct the interference at his own expense.

Precautions for use
II
■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:
■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.
(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.

Precautions for use
III
●Indication
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.
This mark indicates reference information.
HINT!

Precautions for use
IV
■Cautionary Items
●Precautions
●Do not give physical shock to the meter like dropping or hitting.
●Avoid water or solution from being contact with the meter body.
Water or solution, if contacts with the meter, may cause the
meter breakage.
●To remove the dirt on the meter, wipe it off with dry and soft cloth
as silicone cloth. (Do not use water)
●Do not pour water to the electrode and/or the connector part of
the meter body. Do not touch with dirty or wet hands.
●The electrode and/or the connector part of the meter body
requires high insulation. Contact with water or with dirty hands
may bring defective insulation, to cause indication fluctuation or
erroneous measurement values. Sometimes the electrode itself
may be damaged to an unrecoverable level.
●Perform the key operation by the fingers, not by the hard object
like metal stick or rod.
●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 use any unspecified batteries ; it may cause a breakage.
●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 conden-
sation
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.

TABLE OF CONTENTS
F-51 V
Chapter 1 Overview of pH Meter . . . . . . . . . 1
1.1 Package contents.......................................................... 1
1.2 Functions ....................................................................... 2
1.3 Explanation of part names............................................ 4
1.3.1 Meter body ....................................................................................4
1.3.2 Display ...........................................................................................4
1.4 Operation keys............................................................... 6
1.5 Assembling the electrode stand.................................. 7
1.6 Connecting the electrodes ........................................... 8
1.7 Inserting/replacing the dry-cell batteries.................... 10
1.8 Connecting the AC adapter.......................................... 11
Chapter 2 Taking Measurements . . . . . . . . . 13
2.1 Turning the meter ON/OFF ........................................... 13
2.2 Settings required before measurement....................... 13
2.3 Measurement modes..................................................... 14
2.4 Selecting the measurement modes............................. 15
2.5 Measuring pH................................................................. 16
2.6 Measuring ORP.............................................................. 25
Chapter 3 Functions . . . . . . . . . . . . . . . . . . . 29
3.1 Data memory function................................................... 29
3.2 Calibration history display ........................................... 31
3.3 Displaying and setting the clock.................................. 33
3.4 Setting modes................................................................ 34
3.4.1 Entering the Setting mode .............................................................34
3.4.2 pH standard solution setting ..........................................................35
3.4.3 Temperature compensation setting ...............................................38
3.4.4 pH calibration frequency setting ....................................................39
3.4.5 Sample ID# setting ........................................................................39
3.4.6 Maintenance mode ........................................................................40
Chapter 4 RS-232C communications . . . . . 49
4.1 Cautions before use...................................................... 49
4.2 Command list................................................................. 50
4.3 On-line operation commands....................................... 52
4.4 Data request commands and responses .................... 55

TABLE OF CONTENTS
VI HORIBA
4.5 Communication example using the HyperTerminal... 65
Chapter 5 Printer . . . . . . . . . . . . . . . . . . . . . . 67
5.1 Connecting the printer.................................................. 67
5.2 Printer setting................................................................ 68
5.3 Printer output timing..................................................... 69
5.4 Printing format............................................................... 70
5.4.1 When the ENTER key is pressed in the Measurement mode ....... 70
5.4.2 When the manual data memory is performed in the Measurement mode 71
5.4.3 When the ENTER key is pressed in the Data Memory Call screen 71
5.4.4 When calibration or check is performed in the Calibration mode .. 71
5.4.5 When the ENTER key is pressed in the calibration history display 72
5.4.6 Test printing format in the Maintenance mode .............................. 72
Chapter 6 Maintenance and Troubleshooting 73
6.1 pH (ORP) electrode maintenance ................................ 73
6.2 Troubleshooting............................................................ 77
6.2.1 Error message chart ...................................................................... 77
6.2.2 More troubleshooting .................................................................... 83
Chapter 7 Reference . . . . . . . . . . . . . . . . . . . 89
7.1 pH measurement ........................................................... 89
7.2 mV (oxidation-reduction potential [ORP]) measurement 94
7.3 Specifications................................................................ 99
7.4 Default settings ............................................................. 100
7.5 Operation flowcharts .................................................... 101
7.6 Pin layout of special cables ......................................... 102
7.6.1 RS-232C communications cable ................................................... 102
7.6.2 Cable for CITIZEN printer ............................................................. 102
7.6.3 Cable for SEIKO printer ................................................................ 102
7.7 Spare and optional parts .............................................. 103
7.7.1 Spare parts list .............................................................................. 103
7.7.2 Optional parts ................................................................................ 105

Chapter 1 Overview of pH Meter
1.1 Package contents
F-51 1
Chapter 1 Overview of pH Meter
This chapter explains the part names, how to connect the electrodes,
how to replace the batteries, and precautions when using themeter.
1.1 Package contents
The following items are shipped with each HORIBA pH meter.
To take measurements, you will need electrode(s).
Refer to "7.7 Spare and optional parts" page 103 when purchasing the
electrode(s).
Name Q’ty
Meter 1
Stand 1
Dry-cell batteries 4
Operation manual 1

Chapter 1 Overview of pH Meter
1.2 Functions
2HORIBA
1.2 Functions
The pH meter features the following functions.
●Measurement items
●Functions An overview of the functions found on the pH meter is shown below.
Items Required electrode/standard solution
pH pH electrode
pH standard solution
ORP (mV) ORP electrode
Temperature −
Function Explanation Page
No.
Data memory Enables a maximum of 300 items to be
stored. page
29
pH repeatability
check Displays the difference between the
calibration value and measured value after
calibration.
page
22
pH calibration
history display Displays the date of calibration,
asymmetrical potential and sensitivity. page 31
Relative mV dis-
play Displays mV when the measured potential
is shifted to 0 mV. page
27
Clock The date and time are displayed. page
33
Auto Power OFF Turns ON/OFF setting that automatically
turns power OFF if no keys are touched for
30 minutes.
page
44
RS-232C
communications Enables communication with a computer, using RS-232C. page
49
Printer output Prints the contents of the memory (printer
sold separately). page
67
Commercial
power supply Enables the use of commercial power, using an AC adapter (sold separately). page
67