horiba DS-51 User manual

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■Preface Thank you for purchasing the DS-51 conductivity 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.
Warranty and Responsibility
Your meter is covered by warranty for a period of one(1)
year, under normal use. Although unlikely, if any trouble attributable
to us should occur during this period, necessary exchange or
repairs shall be conducted by us,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 partyother than us or aparty
authorized by us
• 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 us
We 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.

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 c o r r e c t
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 mea-
surement 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 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.

TABLE OF CONTENTS
DS-51 V
Chapter 1 Overview of COND 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 Conductivity measurement........................................... 16
Chapter 3 Functions . . . . . . . . . . . . . . . . . . . 23
3.1 Data memory function................................................... 23
3.2 Displaying and setting the clock.................................. 25
3.3 Setting modes................................................................ 26
3.3.1 Entering the Setting mode .............................................................26
3.3.2 Temperature compensation setting ...............................................28
3.3.3 Conductivity unit setting .................................................................29
3.3.4 Temperature coefficient setting .....................................................29
3.3.5 Sample ID# setting ........................................................................30
3.3.6 Maintenance mode ........................................................................31
Chapter 4 RS-232C communications . . . . . 39
4.1 Cautions before use...................................................... 39
4.2 Command list................................................................. 40
4.3 On-line operation commands....................................... 42
4.4 Data request commands and responses..................... 46
4.5 Communication example using the Hyper Terminal.. 54

TABLE OF CONTENTS
VI HORIBA
Chapter 5 Printer . . . . . . . . . . . . . . . . . . . . . . 57
5.1 Connecting the printer.................................................. 57
5.2 Printer setting ................................................................ 58
5.3 Printer output timing..................................................... 59
5.4 Printing format............................................................... 60
5.4.1 When the ENTER key is pressed in the Measurement mode ....... 60
5.4.2 When the manual data memory is performed
in the Measurement mode ............................................................. 61
5.4.3 When the ENTER key is pressed
in the Data Memory Call screen .................................................... 62
5.4.4 When calibration or check is performed in the Calibration mode .. 62
5.4.5 Test printing format in the Maintenance mode .............................. 62
Chapter 6 Maintenance and Troubleshooting 63
6.1 Conductivity electrode maintenance........................... 63
6.2 Troubleshooting ............................................................ 64
6.2.1 Error message chart ...................................................................... 64
6.2.2 More troubleshooting ..................................................................... 68
Chapter 7 Reference . . . . . . . . . . . . . . . . . . . 71
7.1 Conductivity measurement .......................................... 71
7.2 Specifications ................................................................ 77
7.3 Default settings.............................................................. 80
7.4 Operation flowcharts..................................................... 81
7.5 Pin layout of special cables.......................................... 82
7.5.1 RS-232C communications cable ................................................... 82
7.5.2 Cable for CITIZEN printer .............................................................. 82
7.5.3 Cable for SEIKO printer ................................................................. 82
7.6 Spare and optional parts .............................................. 83
7.6.1 Optional parts ................................................................................ 84

Chapter 1 Overview of COND Meter
1.1 Package contents
DS-51 1
Chapter 1 Overview of COND 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 COND meter.
To take measurements, you will need electrode(s).
Refer to "7.6 Spare and optional parts" page 83 when purchasing the
electrode(s).
Name Q’ty
Meter 1
Stand 1
Dry-cell batteries 4
Operation manual 1
AC adapter 1