Horiba ES-51 Instruction Manual
Instruction Manual
COND Meter
ES-51
Preface
Thank you for purchasing .
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 5ºC or less.
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 - 2008
■ CE Marking
This product is in conformity with the following directives and
standards:
Directives: The EMC Directives 2004/108/EC
The Low Voltage Directive 2006/95/EC
Standards: EN61326-1: 2006
(EMISSION: Class B, IMMUNITY Category: Basic 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.
Precautions for use
● 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
2002/96/EC, 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 as 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.
I
Precautions for use
■ 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.
■ 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)
(CAUTION)
This indicates an potentially hazardous situation which,
if not avoided, will 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 unsafe practices.
II
Precautions for use
■ 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.
● 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.
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
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.
.
use a hair-dryer for drying the meter. When the meter is
Precautions for use
● Location of use and storage
●
The place which room temperature is at 0ºC to 45ºC
●
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 ...................................................................................... 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.1 Data memory function.................................................................... 26
3.2 Displaying and setting the clock................................................... 29
3.3 Setting modes ................................................................................. 31
3.3.1 Entering the Setting mode ............................................................ 31
3.3.2 Display and description ................................................................ 32
3.3.3 Temperature compensation setting .............................................. 33
3.3.4 Auto data storage setting ............................................................. 34
3.3.5 Sample ID# setting ....................................................................... 36
3.3.6 Conductivity unit setting ............................................................... 37
3.3.7 Temperature coefficient setting .................................................... 37
3.3.8 Maintenance mode ....................................................................... 38
4 RS-232C communications . . . . . . . . . . . . . . . . . 47
4.1 Cautions before use ....................................................................... 47
4.2 Command list .................................................................................. 49
4.3 On-line operation commands ........................................................ 52
ES-51 V
CONTENTS
4.4 Data request commands and responses...................................... 58
4.5 Communication example using the HyperTerminal .................... 67
5 Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.1 Connecting the printer ................................................................... 69
5.2 Printer setting ................................................................................. 70
5.3 Printer output timing ...................................................................... 71
5.4 Printing format ................................................................................ 72
5.4.1 When the ENTER key is pressed in the Measurement mode ...... 72
5.4.2 When the manual data memory storage is performed in
the Measurement mode ............................................................... 73
5.4.3 When the ENTER key is pressed in the Data Memory Call screen 73
5.4.4 When calibration or check is performed in the Calibration mode . 74
5.4.5 Test printing format in the Maintenance mode ............................. 74
6 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.1 Conductivity measurement............................................................ 76
6.2 Specifications ................................................................................. 83
6.3 Default settings............................................................................... 87
6.4 Operation flowcharts...................................................................... 88
6.5 Pin layout of special cables........................................................... 89
6.5.1 RS-232C communications cable .................................................. 89
6.5.2 Cable for CITIZEN printer ............................................................. 89
6.5.3 Cable for SEIKO printer ................................................................ 89
6.6 Spare and optional parts................................................................ 90
6.6.1 Spare parts list ............................................................................. 90
6.6.2 Options ......................................................................................... 91
7 Maintenance and Troubleshooting . . . . . . . . . . 92
7.1 Conductivity electrode maintenance ............................................ 93
7.2 Troubleshooting ............................................................................. 94
7.2.1 Error message chart ..................................................................... 94
7.2.2 More troubleshooting .................................................................... 99
VI HORIBA
1 Overview of the Meter
This chapter explains the part names, how to connect
the electrodes, how to replace the batteries, and
precautions when using the meter.
1 Overview of the Meter
1.1 Package contents
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
ES-51 1
1 Overview of the Meter
1.1 Package contents
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 103 when
purchasing the electrode(s).
2HORIBA
1 Overview of the Meter
1.2 Functions
1.2
Functions
The ES-51 features the following functions.
● Measurement items
Conductivity Conductivity electrode,
Salinity
Resistivity
Temperature
● Functions
Items
Required electrode/
standard solution
Conductivity standard
solution
－
An overview of the functions found on HORIBA the
ES-51 is shown below.
Function Explanation
Data memory Stores the data of measured values and
temperature to the memory (max. 300
items)
Clock Displays the time on the screen and
recorded data.
Auto Power
OFF
RS-232C
communication
Printer output Prints the contents of the memory. page
Automatically turns off power if no operation
is made after 30 minutes.
Enables the communication with a computer
using RS-232C.
Page
No.
page
26
page
26
page
43
page
47
69
AC adapter
connection
The meter can be AC-powered. page
14
ES-51 3
1 Overview of the Meter
1.2 Functions
● Setting Items
Function Explanation
Page
No.
Temperature
compensation
Toggles between Automatic Temperature
Compensation (ATC) mode that measures
page
33
the sample temperature using the
temperature sensor built-in the electrode and
Manual Temperature Compensation (MTC)
mode that uses user-specified temperature.
Auto data
memory
Stores data automatically at an interval of 2
sec. to 24 hours.
page
34
Sample ID Registration of sample ID page
36
COND unit Toggles between S/m and S/cm. page
37
COND
temperature
Automatically or manually sets temperature
coefficient for a sample.
page
37
coefficient
RS-232C communications and the printer cannot be
used simultaneously.
4HORIBA
● Functions in Maintenance mode
1 Overview of the Meter
1.2 Functions
Function Explanation
LCD check Enables check for whether or not all LCD
segments are displayed.
Battery voltage
Enables simple check of battery voltage. page
check
Temperature
Carries out temperature calibration. page
zero adjustment
Auto Power OFF Sets the function that automatically turns the
power OFF if no keys are touched 30
minutes.
Remaining data
Displays the remaining memory. page
memory
Data memory
Deletes data in memory. page
clear
Page
No.
page
40
41
42
page
43
44
44
Initializing
settings
Initializes all settings to the default values. page
45
Printing test Conducts a printing test. page
46
ES-51 5
1 Overview of the Meter
1.3 Part names
1.3
Serial communication
port
Part names
The ES-51, conductivity meter has the following parts:
Display
Keys
AC connector
Dry-cell battery holder
Temperature connector
Electrode connector
6HORIBA
1 Overview of the Meter
1.4 Explanation of display
1.4
Explanation of display
Error No.,
Data No.
Year,
Status display
Measurement
data, hour and
minute
Calibration
history
Input channel
Measurement
item
Temperature,
month and day
HOLD
Second
Meter mode
Measurement unit
Cursor for selecting
setting modes
Setting modes differ
according to model
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.
ES-51 7
1 Overview of the Meter
1.4 Explanation of display
Part name Display Contents
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 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.
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.
8HORIBA
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.
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
The automatic power-off function is a default setting for
this meter. The power is automatically turned OFF if no
operation is performed after a period of approximately
30 minutes.
Turns ON/OFF the power.
This key takes effect only
after pressed for one second
to prevent accidental
operation.
ES-51 9
1 Overview of the Meter
1.6 Connecting the electrodes
1.6
Connecting the electrodes
Connect the electrodes to 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.
COND electrode
Do not perform this step with wet or uncleaned hands.
2.
Push the electrode connector into the connector
CH1
port while turning it clockwise, following the
grooves (see photo, ① and ② ).
10 HORIBA
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 ).
1 Overview of the Meter
1.6 Connecting the electrodes
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.
ES-51 11
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, it indicates that the charge of the dry-cell batteries is running low. When this occurs, replace the batteries promptly.
Dry-cell battery type: AA alkaline
・Insert the batteries, paying attention to the orientation
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 (sold
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 batteries were used for the operation
check before shipping.
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.
12 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.
Battery life approx. 100 hours
ES-51 13
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 V to 200 V AC
Frequency range 50/60 Hz
Current rating Max 370 mA
Class2 Power supply
Equipment protected by double
insulation
Indoor use only
Supply voltage fluctuations 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.
14 HORIBA
2 Taking Measurements
This chapter explains how to take basic measurements.
2 Taking Measurements
2.1 Turning the meter ON/OFF
2.1
2.2
Turning the meter ON/OFF
Pressing the ON/OFF key turns the power on/off. The
ON/OFF key functions when it is pressed continuously
for about one second to protect against accidental
operation.
Settings required before measurement
The built-in clock allows you to record the date of
calibration and data memory storage. When using the
meter for the first time, be sure to set this clock.
“3.2 Displaying and setting the clock” page 29
ES-51 15
2 Taking Measurements
2.3 Measurement modes
2.3
Measurement modes
The ES-51, conductivity meter has an Instantaneous
Value Measurement mode and an Auto Hold
Measurement mode for all components of the solution
being measured.
● Instantaneous Value Measurement mode
The ES-51, conductivity meter performs instantaneous
value measurement as the default measurement mode
when the power is first turned ON and when the auto
hold measurement is cancelled or cleared.
For this reason, the screen displayed when the meter is
in the Instantaneous Value Measurement mode is called
the "initial screen" in this manual.
Displayed
16 HORIBA
● Auto Hold Measurement mode
Auto Hold Measurement mode maintains the display of
the value measured when the meter automatically
judges that the measured value has stabilized. Press the
MEAS key with the initial screeen displayed to make
“HOLD” blink on the display. When the measured value
becomes stable, “HOLD” will stop blinking and remain
displayed, and the measured value will remain
displayed. To clear the hold status or “stabilized” value
(when “HOLD” is blinking), press the MEAS key.
2 Taking Measurements
2.3 Measurement modes
Blinks
Criteria for judging stability
Conductivity
measurement
Temperature
measurement
Within ±3-digit variance after 10
：
seconds
Within ±2ºC variance after 10
：
seconds
Displayed
ES-51 17
2 Taking Measurements
2.4 Selecting the measurement modes
2.4
Selecting the measurement modes
Pressing the MODE key changes the measurement
mode. The last measurement mode item is the clock
display. Pressing the MODE key once more returns the
display to the first measurement mode.
Power ON
COND Measurement mode (instantaneous value)
Salinity Measurement mode (instantaneous value)
Resistivity Measurement mode (instantaneous value)
Clock display
18 HORIBA
2 Taking Measurements
2.5 Conductivity measurement
2.5
Conductivity measurement
The following shows the operational flow for conductivity
measurement.
● Measuring conductivity: basic operational flow
1. Electrode preparation
Power ON
2.
Conductivity Measurement mode (instantaneous value)
“ ● Setting the clock” page 30
“3.3.6 Conductivity unit setting” page 37
“3.3.7 Temperature coefficient setting” page 37
3. Cell constant setting
4. Calibration mode
Preparation for standard solution
Auto Hold calibration
5.
Conductivity Measurement (instantaneous value)
“3.3.4 Auto data storage setting” page 34
“3.3.5 Sample ID# setting” page 36
6. Auto Hold Measurement
About once
a year
Clear Hold
“3.1 Data memory function” page 26
ES-51 19
2 Taking Measurements
2.5 Conductivity measurement
● Electrode preparation
Refer to the electrode instruction manual and make sure
you have the correct electrode.
● Entering the Conductivity Measurement mode
1.
Remove the electrode protective cap from the
electrode.
2.
Immerse the electrode in pure (de-ionized)
water.
3.
Select the Conductivity Measurement mode
when the pH Instantaneous Value Measurement
screen is displayed by pressing the MODE key.
The Conductivity Instantaneous Value
Measurement screen will appear.
20 HORIBA
2.5 Conductivity measurement
● CELL SET mode (Setting cell constant)
Set the cell constant the first time an electrode is
connected to the main unit of the meter.
1.
To enter the CELL SET mode, press the CELL
key while in the Measurement mode.
2 Taking Measurements
Digit
2.
Change the digit number using the ENTER key.
3.
Press the ▲ and ▼ keys to set the cell constant
written on the electrode label.
Setting range: 0.700 – 1.300
To change the coefficient, use the following
procedure.
-1
When the SI unit system (m
When the former unit system (cm
Temperature coefficient
The default value of the temperature coefficient is set at
2.00%/ºC.
) is set:
-1
) is set:
To change this setting, refer to “3.3.7 Temperature
coefficient setting” page 37.
Unit Setting
The default value of unit is S/m (SI unit system).
To change this setting to the former unit system S/cm,
refer to “3.3.6 Conductivity unit setting” page 37.
ES-51 21
2 Taking Measurements
2.5 Conductivity measurement
● Calibrating the cell constant
The cell constant of the electrode changes as the electrode is used. Calibrate the cell constant once a year or
so.
Calibrating the cell constant will update it to match the
condition of the current electrode.
The cell constant is calibrated with a standard solution of
potassium chloride.
To prepare a standard solution of potassium chloride,
refer to “ ● Preparing potassium chloride standard
solution” page 89.
1.
Immerse the electrode in the standard solution
of potassium chloride.
2.
Enter the Calibration mode by pressing the
MODE key in the CELL SET mode.
3.
Enter the value of the standard solution used for
calibration in the Calibration mode using the ▲
and ▼ keys.
“ ● Conductivity and temperature coefficients for various
solutions” page 94
When the temperature conversion has been set to ON
when setting the temperature coefficient, calibration is
performed with the converted temperature.
22 HORIBA
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