horiba ES-51 User manual

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Preface Thank you for purchasing the ES-51 conductivity meter.
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.
Note 1:The water-resistant construction of this meter conforms to IP-67 of IEC
529, entitled “Water resistant testing and protection against penetration by solid
matter for electrical machinery and equipment.” To maintain the water-resistant
construction of this meter, follow the instructions in this manual when 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 of the water for 30 minutes, at a temperature differential
between the water and the device of 5 ℃or less.
Warranty and Responsibility
Your meter iscoveredbywarrantyfor aperiodof one(1)year,under
normal use. Although unlikely, if any trouble attributableto us shouldoccur
duringthis period, necessaryexchange or repairs shallbeconductedbyus,
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
anyparty other than us or a party 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 byus
We also shall not be liablefor any damages resulting from anymalfunctions
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 Require-
ment)
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 be
required to 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.
●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.
●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.

CONTENTS
ES-51 V
1 Overview of the Meter . . . . . . . . . . . . . . . . . . . . 1
1.1 Package contents........................................................................... 1
1.2 Functions......................................................................................... 3
1.3 Part names ...................................................................................... 6
1.4 Explanation of display.................................................................... 7
1.5 Operation keys................................................................................ 9
1.6 Connecting the electrodes............................................................. 10
1.7 Inserting/replacing the dry-cell batteries ..................................... 12
1.8 Connecting the AC adapter ........................................................... 14
2 Taking Measurements . . . . . . . . . . . . . . . . . . . . 15
2.1 Turning the meter ON/OFF............................................................. 15
2.2 Settings required before measurement........................................ 15
2.3 Measurement modes...................................................................... 16
2.4 Selecting the measurement modes .............................................. 18
2.5 Conductivity measurement ........................................................... 19
3 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.1 Data memory function.................................................................... 27
3.2 Displaying and setting the clock................................................... 30
3.3 Setting modes................................................................................. 32
3.3.1 Entering the Setting mode ............................................................ 32
3.3.2 Display and description ................................................................ 33
3.3.3 Temperature compensation setting .............................................. 34
3.3.4 Auto data storage setting ............................................................. 35
3.3.5 Sample ID# setting ....................................................................... 37
3.3.6 Conductivity unit setting ............................................................... 38
3.3.7 Temperature coefficient setting ................................................... 38
3.3.8 Maintenance mode ....................................................................... 39
4 RS-232C communications . . . . . . . . . . . . . . . . . 49
4.1 Cautions before use....................................................................... 49
4.2 Command list.................................................................................. 51
4.3 On-line operation commands........................................................ 54

CONTENTS
VI HORIBA
4.4 Data request commands and responses...................................... 60
4.5 Communication example using the HyperTerminal.................... 69
5 Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.1 Connecting the printer................................................................... 71
5.2 Printer setting ................................................................................. 72
5.3 Printer output timing...................................................................... 73
5.4 Printing format................................................................................ 74
5.4.1 When the ENTER key is pressed in the Measurement mode ...... 74
5.4.2 When the manual data memory storage is performed in the
Measurement mode .................................................................................75
5.4.3 When the ENTER key is pressed in the Data Memory Call screen 75
5.4.4 When calibration or check is performed in the Calibration mode . 76
5.4.5 Test printing format in the Maintenance mode ............................. 76
6 Maintenance and Troubleshooting . . . . . . . . . . 77
6.1 Conductivity electrode maintenance............................................ 78
6.2 Troubleshooting ............................................................................. 79
6.2.1 Error message chart ..................................................................... 79
6.2.2 More troubleshooting .................................................................... 84
7 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
7.1 Conductivity measurement............................................................ 92
7.2 Specifications ................................................................................. 99
7.3 Default settings............................................................................... 101
7.4 Operation flowcharts...................................................................... 102
7.5 Pin layout of special cables......................................................... 103
7.5.1 RS-232C communications cable ................................................ 103
7.5.2 Cable for CITIZEN printer ............................................................. 103
7.5.3 Cable for SEIKO printer ................................................................ 103
7.6 Spare and optional parts.............................................................. 104
7.6.1 Spare parts list ........................................................................... 104
7.6.2 Options ......................................................................................... 105

1 Overview of the Meter
1.1 Package contents
ES-51 1
1Overview of the 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
conductivity meter package.
Meter (main unit) 1 unit
Dry-cell batteries 2 pcs.
Strap 1 pc

1 Overview of the Meter
1.1 Package contents
2HORIBA
Soft case 1 pc
Operation manual 1 book
To take measurements, you will need electrode(s).
Refer to “7.6 Spare and optional parts” page 104 when
purchasing the electrode(s).

1 Overview of the Meter
1.2 Functions
ES-51 3
1.2 Functions
The ES-51 features the following functions.
●Measurement items
●Functions
An overview of the functions found on HORIBA the
ES-51 is shown below.
ItemsRequired electrode/
standard solution
Conductivity Conductivity electrode,
Conductivity standard
solution
Salinity
Resistivity
Temperature −
Function Explanation Page
No.
Data memory Stores the data of measured values and
temperature to the memory (max. 300
items)
page
27
Clock Displays the time on the screen and
recorded data. page
27
Auto Power
OFF Automatically turns off power if no operation is made after 30 minutes. page
44
RS-232C
communication Enables the communication with a computer using RS-232C. page
49
Printer output Prints the contents of the memory. page
71
AC adapter
connection The meter can be AC-powered. page
14

1 Overview of the Meter
1.2 Functions
4HORIBA
●Setting Items
RS-232C communications and the printer cannot be
used simultaneously.
Function Explanation Page
No.
Temperature
compensation Toggles between Automatic Temperature Compensation (ATC) mode that measures
the sample temperature using the
temperature sensor built-in the electrode and
Manual Temperature Compensation (MTC)
mode that uses user-specified temperature.
page
34
Auto data
memory Stores data automatically at an interval of 2 sec. to 24 hours. page
35
Sample ID Registration of sample ID page
37
COND unit Toggles between S/m and S/cm. page
38
COND
temperature
coefficient
Automatically or manually sets temperature
coefficient for a sample. page
38

1 Overview of the Meter
1.2 Functions
ES-51 5
●Functions in Maintenance mode
Function Explanation Page
No.
LCD check Enables check for whether or not all LCD
segments are displayed.page
41
Battery voltage
check Enables simple check of battery voltage.page
42
Temperature
zero adjustment Carries out temperature calibration. page
43
Auto Power OFF Sets the function that automatically turns the
power OFF if no keys are touched 30
minutes.
page
44
Remaining data
memory Displays the remaining memory.page
45
Data memory
clear Deletes data in memory.page
45
Initializing
settings Initializes all settings to the default values. page
46
Printing test Conducts a printing test.page
47

1 Overview of the Meter
1.3 Part names
6HORIBA
1.3 Part names
The ES-51, conductivity meter has the following parts:
Display
Keys
AC connector
Dry-cell battery holder
Serial communication
port
Temperature connector Electrode connector

1 Overview of the Meter
1.4 Explanation of display
ES-51 7
1.4 Explanation of display
Input channel
Temperature,
month and day
Measurement
item
HOLD
Second
Meter mode
Measurement unit
Setting modes differ
according to model
Cursor for selecting
setting modes
Error No.,
Data No.
Year,
Status display
Measurement
data, hour and
minute
Calibration
history
Part name Display Contents
Input channel Input channel 1
Displayed when measuring
conductivity
Error No. Displayed when an error is
generated
Data No. Displayed when the data number
has been set.

1 Overview of the Meter
1.4 Explanation of display
8HORIBA
Status display
−
−
−
Shows error number and data
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 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 aprinter is
connected. (Sometimes displayed
when a computer is connected
depending on the computer.)
Displayed during manual
temperature compensation.
Not displayed during automatic
temperature compensation.
HOLD Displayed while the data is held
(HOLD status).
Blinks during measurement or
calibration.
Meter mode Displayed when in Measurement
mode.
Displayed when in Calibration
mode.
Part name Display Contents

1 Overview of the Meter
1.5 Operation keys
ES-51 9
1.5 Operation keys
This section describes the functions of the keys.
The automatic power-off function is adefault setting for
this meter. The power is automatically turned OFF if no
operation is performed after a period of approximately
30 minutes.
Name Description
MEAS key Returns to the Measurement
mode. Starts measurement.
MODE key Selects measurement item.
SET key Selects setting item.
CELL key Enters the Cell Constant
Setting mode.
UP key Executes the data memory
function. Increases numerical
value.
ENTER key Establishes the setting.
DOWN key Calls up data memory.
Decreases numerical value.
ON/OFF
key Turns ON/OFF the power. This key takes effect only
after pressed for one second
to prevent accidental
operation.

1 Overview of the Meter
1.6 Connecting the electrodes
10 HORIBA
1.6 Connecting the electrodes
Connect the electrodesto the conductivity meter using
the following procedures. Use special care to ensure
that no water or dirt come in contact with the connector
during connection procedures.
・Electrode connector: Conductivity electrode
・Temperature connector: Temperature electrode
●Electrode connector (G-R electrode)
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).
Do not push the electrode with undue force
when the pins are not properly aligned.
Do not perform this step with wet or uncleaned hands.
2. Push the electrode connector into the connector
port while turning it clockwise, following the
grooves (see photo, ①and ②).
COND electrode CH1

1 Overview of the Meter
1.6 Connecting the electrodes
ES-51 11
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.
●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 automatic temperature
compensation (ATC),will be 25°C.