EUTECH INSTRUMENTS CYBERSCAN PH 10 PHMV METER, CyberScan pH 10, CyberScan pH 100 Instruction Manual

Instruction Manual

CyberScan pH 10 & pH 100

Hand-held pH / mV / Temperature / RS 232 Meter

68X007106

Technology Made Easy ...

09/2001 rev 4

pH 10 Meter

pH/mV/°C

pH 100 Meter

pH/mV/°C/RS 232

PREFACE

This manual serves to explain the use of the Standard CyberScan series hand-held meters. The
models covered are the CyberScan pH 10 and the CyberScan pH 100 hand-held meters.

The manual functions in two ways, firstly as a step by step guide to help the user operate the
meter. Secondly, it serves as a handy reference guide.

This instruction manual is written to cover as many anticipated applications of the CyberScan pH
meters as possible. If there are doubts in the use of the CyberScan pH 10/100 meters, do not
hesitate to contact the nearest Eutech Instruments Authorized Distributor.

Eutech Instruments cannot accept any responsibility for damage or malfunction to the meter
caused by improper use of the instrument.

Remember to fill in the guarantee card and mail it back to your authorized distributor or Eutech
Instruments Pte Ltd (address, contact details, email and homepage information are found on the
back page of this manual).

The information presented in this manual is subject to change without notice as improvements are
made, and does not represent a commitment on the part of the Eutech Instruments Pte Ltd.

Note: Lotus® 1-2-3 is a registered trademark of Lotus Corporation.

Excel ® is a registered trademark of Microsoft Corporation.
Copyright ©1993 Eutech Instruments Pte. Ltd. All rights reserved.
Revised in September 2001, revision 4 (version 5).

TABLE OF CONTENTS

1 INTRODUCTION 1
2 DISPLAY AND KEYPAD FUNCTIONS 2

2.1 Display 2

2.2 Keypad 3

3 PREPARATION 5

3.1 Inserting the Batteries 5

3.2 Connecting the pH Electrode, Temperature Probe & Electrode Holder 6

3.3 Connecting the AC/DC Adapter 8

3.4 Connecting the RS232C Cable (Only For CyberScan pH 100) 9

4 CALIBRATION 11

4.1 Preparing the Meter for Calibration 11

4.2 pH Calibration with ATC 12

4.3 pH Calibration (without ATC) 14

4.4 Temperature Calibration 15

4.5 Calibration Procedure for Relative mV Measurements (For pH 100 Only) 17

4.6 Erasing Calibrated Values (For pH 100 only) 18

5 MEASUREMENT 19

5.1 Automatic Temperature Compensation 19

5.2 Manual Temperature Compensation 20

5.3 Taking Measurements 21

6 HOLD FUNCTION 22
7 MEMORY FUNCTION (FOR pH 100 ONLY) 23

7.1 Memory Input 23

7.2 Memory Recall 24

8 PRINT FUNCTION (FOR pH 100 ONLY) 25

8.1 Using the CyberScan pH 100 With The Printer 25

8.2 Sending Data To Computer 26

9 ADVANCED SETUP FUNCTIONS (FOR pH 100 ONLY) 28

9.1 Program 1 – Software Initialization 29

9.2 Program 2 – Electrode Data 30

9.3 Program 3 –Meter Configuration 32

9.4 Program 4 – Communication Setup 34

10 CYBERCOMM PORTABLE - DATA ACQUISITION SOFTWARE

(DAS FOR pH 100 ONLY) 36

10.1 System Requirements 36

10.2 Loading CYBERCOMM PORTABLE 36

10.3 Running CYBERCOMM PORTABLE 42

10.4 Capturing And Printing Data Into Computer Using CYBERCOMM PORTABLE 46

10.5 Trouble-shooting Guide 47

11 ELECTRODE CARE 48

11.1 Electrode Maintenance 48

11.2 Electrode Cleaning 49

11.3 Electrode Activation 49

11.4 Rejuvenation Procedure 49

12 ERROR MESSAGES 51
13 TROUBLE-SHOOTING 52
14 INFORMATION ON pH MEASUREMENT & ELECTRODE 53

14.1 pH Measurements 53

14.2 Use of Standard pH Buffers 54

14.3 Standard pH Buffers 55

15 LIST OF ACCESSORIES 56

15.1 Replacement Meter and Meter accessories 56

15.2 Calibration Solutions 57

15.3 Ion Selective Electrodes (ISE) 57

15.4 pH & ORP Electrodes 58

16 METER SPECIFICATIONS 59
17 ADDENDUM 1: FACTORY DEFAULT SETTINGS (pH 100 ONLY) 60
18 WARRANTY & RETURN OF ITEMS 61

1

1 INTRODUCTION

Thank you for selecting Eutech Instruments standard CyberScan pH 10/100 meter. These
meters are microprocessor-based instrument and are designed to be handy, capable of
allowing one-hand operation. Each has a large custom dual LCD for clear and easy reading. It
is a unique and intelligent instrument that has the capability to cater to the preferences of the
discerning individual.

Both meters have many user-friendly features – all of which are completely accessible through
the splash-proof membrane keypad. Your meter includes a temperature probe (EC-PHTEM­01P), electrode holder, built-in meter stand and batteries. Eutech Instruments offer a wide
selection of pH and ORP electrodes. Refer to “Accessories” section for more information.

The basic model is the CyberScan pH 10 which is capable of measuring pH, Temperature,
and millivolt (mV).

The deluxe model is the CyberScan pH 100 which measures pH, Temperature, millivolt (mV)
and relative millivolt (Rel mV). It has many advanced features and allows you to customize the
meter settings. It also has a RS232C port that allows the meter to be connected to a computer
or a printer via a cable for transferring data.

For power requirement, you can either use 4 AAA-sized batteries or an AC/DC power adapter
(sold separately).

Please read this manual thoroughly before operating your meter.

2

2 DISPLAY AND KEYPAD FUNC TIONS

2.1 Display

The LCD has a primary and secondary display.

•

The primary display shows the measured pH or ORP values.

•

The secondary display shows the measured temperature.

The display also shows error messages, keypad functions and program functions.

Figure 1: Full LCD Screen

1

. SETup mode indicator

9

. pH buffer selection indicator

16

. ON & OFF indicator

2

. MEASurement mode indicator

10

. Temperature indicator

17

. Low battery indicator

3

. CALibration indicator

11

. Automatic Temperature

Compensation indicator

18

. Probe indicator

4

. CONfirm indicator

12

. mV measurement mode

indicator

19

. Buffer indicator

5

. MEMory recall mode indicator

(

For pH 100 only

)

13

. Rel mV measurement mode

indicator (

For pH 100 only

)

20

. ERRor indicator

6

. pH indicator

14

. Temperature measurement

mode indicator

21

. Printer indicator (

For pH 100

only

)

7

. Relative mV indicator (

For pH

100 only

)

22

. HOLD indicator

8

. mV indicator

15

. pH measurement mode

indicator

23

. READY indicator

3

2.2 Keypad

A large membrane keypad with tactile feedback makes the instrument easy to use. Each
button, when pressed, has a corresponding graphic indicator on the LCD (Figure 1). Some
buttons have several functions depending on its mode of operation.

Key Function

ON/OFF

Powers on and shuts off the meter. The meter will start in pH measurement mode.

HOLD

Freezes the measured reading. To activate, press HOLD while in measurement
mode. To release, press HOLD again.

MODE

Selects the measurement parameter. Default is pH measurement. Press MODE to
toggle between pH, Temperature, Rel mV (

only pH 100

), mV, & back to pH

measurement mode.

CAL/MEAS

Toggles between Calibration and Measurement mode.

1. If you are in pH measurement mode, press CAL/MEAS to enter pH calibration
mode.

2. If you are in temperature measurement mode, press CAL/MEAS to enter
temperature calibration mode.

3. If you are in Rel mV (

only in pH 100

) measurement mode, press CAL/MEAS to

enter Rel mV measurement calibration mode.

While in SETup (

only in pH 100

) menu, pressing CAL/MEAS takes you out and into

the measurement mode.

CON

CONfirm function:

Press to confirm values in Calibration mode and to confirm

selections in SETup mode.

!!!!

/

""""

In Calibration mode:

1. If you are in pH calibration mode, press

!!!!

or

""""

key scrolls up or down the

buffer calibration values.

2. If you are in temperature calibration mode, press

!!!!

or

""""

key to adjust

temperature values in °C.

3. If you are in Rel mV (

only in pH 100

) calibration mode, press

!!!!

or

""""

key to

adjust mV values.

In SETUP mode (

only in pH 100

):

Press

!!!!

or

""""

key to scroll through options in each SETup programs.

MI / MR (

only

in pH 100

)

In measurement mode (pH, Rel mV or mV) press MI (memory input) to store values
with its corresponding temperature values in the memory. Press MR (memory recall)
to retrieve data from memory.

(

only in pH

100

)

Allows you to print current measurement to either the printer or the computer.

SETUP (

only

in pH 100

)

Takes you into the SETUP mode. This mode lets you customize meter preference
and defaults, view calibration, electrode offset data, clear memory, change pH
resolution, and communication protocol setting.

4

Figure 3: Keypad of pH 100 meter

Figure 2: Keypad of pH 10 meter

5

3 PREPARATION

3.1 Inserting the Batteries

The CyberScan is packaged with 4 “AAA” alkaline batteries required for operation. To insert
the batteries into the CyberScan, follow the procedure outlined below.

1. Use a Phillips Head screwdriver, remove the two screws (Figure 4) with the hinge closed.

2. Remove the battery cover. Note the polarity and insert the batteries into the battery
compartment correctly (Figure 5).

3. Replace the battery cover into its position and screw back using the two screws removed
earlier.

Your CyberScan hand-held meter is now ready for operation.

Figure 5: Battery position

Figure 4: Take out battery cover by

removing 2 screws

6

3.2 Connecting the pH Electrode, Temperature Probe & Electrode Holder

The Eutech Instruments CyberScan pH 10/100 meter uses any standard pH, ORP, or Ion
Selective Electrode (ISE) with a BNC connector. For Automatic Temperature Compensation
(ATC), this meter requires a temperature probe with a phono-jack connector.

NOTE: It is important that water does not get onto the BNC connector. Also avoid touching the
connector with soiled hands.

3.2.1 To connect pH, ORP or ISE electrode

1. Slide the electrode connector of the
electrode over the BNC connector
socket on the meter.

2. Make sure the slots of the connector are
in line with the posts of the socket.

3. Slide the BNC connector of the probe
over (Figure 6).

4. Rotate and push connector clockwise
until it locks.

5. To remove electrode, push and rotate
the connector anti-clockwise.

6. While holding onto the metal part of
the connector, pull it away from the meter.

7. Be careful not to use excessive force.

CAUTION:

Do not pull on the probe cord or the probe wires might disconnect.

Refer to “Accessories” section for information on temperature probe and other electrodes.

3.2.2 To connect the temperature probe:

The temperature probe (provided) uses a phono
jack to connect with the socket on the CyberScan.
Insert the jack fully into the socket (Figure 7).

Figure 6: Connect pH or ORP electrode using BNC

Figure 7: Connecting the temperature

probe

7

3.2.3 Attaching the electrode onto the electrode Holder

The CyberScan pH meter is packed with two electrode holders (provided). They are designed
for easy use and installation. Care must be taken to avoid use of excessive force in the
process of attaching these components.

1. Locate the slot on the right-hand side of the meter.

2. Gently slide the flange of the holder into the slot on the meter. Make sure the holder is
secured properly into the slot (Figure 8).

3. You can attach the electrode holder in different positions (Figure 10).

3.2.4 To attach a second electrode holder:

The electrode holder is designed such that you can attach one holder onto another. Up t o two
electrodes (using the BNC connector and phono-jack) can be used with the CyberScan meter
at any one time.

1. Align the flange of the second electrode holder with the slot of the first holder (Figure 9).

2. Slide the flange of the second holder into the slot of the first holder until the tops of the
holders are aligned and secure.

Figure 8: Slide in the electrode holder

Figure 9: Connecting 2 electrode

holders together

8

3.2.5 Insert the electrode into the holder

1. Do not use excessive force when inserting electrodes into the holders.

2. Insert the pH electrode into the opening of the first holder until the top housing of the
electrode touches the top of the holder.

3. If you are using a separate temperature probe, insert the probe into the opening of the
second holder until the ridge on the housing touches the top of the holder.

NOTE: The holder is designed for probes 12 mm in
diameter. Electrodes larger than 12 mm may not fit in
the holder. Forcing the electrode into the opening
may damage the holder or your electrode.

The electrode holders can be attached in different
positions for greater flexibility in measurement and
storage purposes.

Simply slide out the electrode

holders and reoriented into appropriate

orientation before putting into position.

3.3 Connecting the AC/DC Adapter

Besides using four AAA-sized batteries as
power source, the CyberScan pH 10/100
meter can also operate from the power
mains using an AC/DC power adapter either
at 120/220 VAC (sold separately). This is
extremely useful if you have an A.C. power
source available (e.g. laboratory).

Before plugging in, switch off the meter and
the power source of adapter. This is a safety
precaution that should be adhered to
safeguard your CyberScan meter.

1. Switch off the meter and power sources.

2. Select the correct voltage of AC/DC Adapter. See Figure 11.

NOTE: Output Voltage: 12 V D.C.; Current: 500 mA. Ensure that the input mains

voltage (120/240 VAC) matches your adapter requirements.

3. Insert the D.C. jack into the socket and switch on the power to the adapter, followed by
the CyberScan meter.

Figure 11: Putting the AC Power Adapter

Figure 10: Different positions using

electrode holder

9

3.4 Connecting the RS232C Cable (Only For CyberScan pH 100)

The CyberScan pH 100 meter provides a RS232C output for
you to transmit your readings either to a printer or a computer
via a cable. This is useful in instances where the CyberScan
meter is used for continuous monitoring of a certain process or
experiment. Data output to the printer or the computer can then
be evaluated.

The data is output in the ASCII format. This format allows the
data to be imported by a wide variety of software that read
ASCII data (e.g. Microsoft’s Excel, Lotus, Quattro-pro etc.).
Eutech Instruments provides a complimentary Data Acquisition

Software (DAS) that captures data transmitted into an ASCII
file for later use.

1. Open the printer port cover located at the bottom end of
the meter. Do not use excessive force when doing this.
See Figure 12.

2. Noting the orientation of the RS232C connector, plug the male connector into the
RS232C port of the CyberScan.

3. Fasten the RS232C connector by fastening the two screws at the side of the male
RS232C connector.

3.4.1 RS232C Configuration

The CyberScan pH 100 meter has a 9 pin female RS232C connector with the following pinout:

PIN NO. DESCRIPTION

1­2 Transmit Data
3­4 DSR (Data Set Ready)
5GND
6­7 CTS (Clear to Send)
8­9-

A one-to-one connection can be made with a 9 pin RS232C port of the computer.

Figure 12: Location of

RS232C Port (Only in pH

100)

10

Figure 13: Pin number position of the 9-pin RS 232C port

In case CyberScan pH 100 meter’s output has to be sent to a 25 pin RS232 C connector, the
following cable configuration may be used:

CyberScan pH 100 25 pin connector

2 (TxD) (RxD) 3

4 (DSR) (DTR) 20
5 (GND) (GND) 7
7 (CTS) (RTS) 4

1. C yberScan pH 100 uses hardware handshake i.e. CyberScan pH 100 expects both DSR
and CTS lines to be active before it sends data.

2. If the [PRINT] key is pressed while the printer is not ready or if the printer is off, the
CyberScan pH 100 meter displays error message by showing both the printer and the
ERR annunciators blinking alternately, and awaits the printer to be ready (Figure 14).

3. While the meter is displaying printer error, you
may press CAL/MEAS key to return to the
measurement mode.

Figure 14: Error in printing

11

4 CALIBRATION

4.1 Preparing the Meter for Calibration

Before starting calibration, make sure you are in the correct measurement mode. When you
switch on the meter, the meter starts up in the pH measurement mode.

Before calibrating, select the correct mode by pressing the MODE key. There are 4 modes:

[pH] for pH measurements,
[Temp] for Temperature measurements,
[Rel] [mV] for Relative mV measurements

(only for pH 100 meter)

[mV] for millivolt measurements.

Be sure to remove the protective electrode storage bottle or rubber cap of the electrode before
calibration or measurement. If the electrode has been stored dry, wet the electrode in tap
water for 10 minutes before calibrating or taking readings to saturate the pH electrode surface
and minimize drift.

Wash your electrode in deionized water after use, and store in electrode storage solution. If
storage solution is not available, use pH 4.01 or 7.00 buffer solution.

Do not reuse buffer solutions after calibration. Contaminants in the solution can affect the
calibration, and eventually the accuracy of the measurements. Refer to Accessories for
information on Eutech Instruments pH buffer solutions.

It is recommended that you perform at least a 2-Point Calibration using standard buffers that
adequately cover the expected measurement range prior to measurement. 1-Point Calibration
can also be used for quick measurements. Make sure that the calibration point is close to the
sample value to be measured.

The CyberScan pH 10 & pH 100 meters are capable of multi-point calibration to ensure
enhanced accuracy throughout the pH measurement range. The number of pH calibrations
points and pH buffer standards used are:

Meter Number of Calibration Points Buffer Points (USA standard)

pH 10 Up to 3 points pH 4.01, 7.00 & 10.01
pH 100 Up to 5 points pH 1.68, 4.01, 7.00, 10.01 & 12.45

12

4.2 pH Calibration with ATC

To activate the Automatic Temperature
Compensation (ATC), simply plug in the
temperature probe into the phono jack. The ATC
indicator will be displayed on the LCD (Figure

15). If the ATC indicator is not displayed, it

indicates that the temperature probe is either not
properly connected to the instrument or is faulty.

1. Switching ‘ON’ the meter by pressing the
ON/OFF key.

2. All the LCD segments will be displayed
momentarily for a few seconds to check
that all segments are in working condition.
Then, the LCD will switch to the [pH]
measurement mode.

3. Select the [pH] mode using the MODE key.
(See Figure 15 on right).

4. Rinse the electrode well with deionized
water or rinse solution. (Do not wipe the
electrode with tissue paper as this may
cause a build-up of electrostatic charge on
the glass surface!).

5. Dip the probe into the calibration buffer.
The end of the probe must be completely
immersed into the sample. Stir the probe
gently to create a homogeneous sample.

6. Press the CAL key to calibrate the meter.

7. The display will show the [CAL] mode and
the buffer icon as shown (see [1] & [2] in
Figure 15).

8. The primary display will show the
measured reading while the secondary
display will indicate that pH 7.00 is ready for
calibration.

9. Wait for the measured pH value to stabilize.
The READY annunciator will light up. See [3]
in Figure 15.

Figure 15: pH Calibration at pH 7.00

13

NOTE: In pH 100 meter, you can program the meter to turn off the ‘READY’

indicator through the SETup mode.

10. Press the CON key to confirm the calibration. The ‘CON‘ indicator flashes for one second
and disappears.

11. Upon confirmation, the instrument is calibrated to the buffer indicated in the secondary
display.

12. The secondary display automatically scrolls to
the next pH buffer calibration option i.e. pH

10.01.

13. For 1-Point Calibration, this can be ignored and
you can exit to the [MEAS] mode by selecting
the CAL/MEAS key.

NOTE: The ‘Or’ indicator flashes if the selected

buffer value is not within +/- 0.50 pH
from the measured pH value.

14. To calibrate 2 or more points, press the Ml/

!

and MR/" key to scroll through the various
buffer pH options.

15. Select the second pH buffer for calibration
accordingly. Repeat steps 4 to 14 above.

16. Once calibration is confirmed at the second point,
you can proceed to calibrate at the third point
without the need to return to Measurement mode.
Just select the desired buffer by using Ml/! or
MR/" key.

NOTE: For pH 100 meter you can check on which buffer calibration points were being
calibrated using Program 2.2 under SETUP mode (see section 9.2.1 on Electrode Data).

NOTE: To exit from pH calibration mode without confirming calibration, DO NOT press
CON in step 11. Press CAL/MEAS instead.

If the selected buffer value is not within ±1.0 pH from
the measured pH value: the electrode and buffer icon
blink and the ERR annunciator appears in the lower
left corner of the display.

Figure 17: Err message and electrode

icon will appear if incorrect buffer are

used

Figure 16: Calibration for second point

14

4.3 pH Calibration (without ATC)

When the CyberScan meter is not used with a temperature probe, it is necessary to calibrate
the temperature first prior to pH calibration.

1. Calibrate for temperature as described in the procedure in Section 4.4.1 -

Temperature

Calibration Without ATC Probe

.

2. Next, proceed with the pH calibration as described in the above section.

3. The meter is now calibrated at a fixed temperature.

NOTE: To exit this program without confirming the temperature calibration value, DO NOT
press CON. Press CAL/MEAS instead.

15

4.4 Temperature Calibration

The temperature sensor is factory calibrated. Calibrate the
temperature probe only if you suspect the temperature
errors that may have occurred over a long period of time or
if you have a replacement temperature probe. This
procedure offers offset adjustment of probe to ensure more
accurate temperature measurement.

In the event where there is no temperature sensor, this
procedure can also be performed for Manual Temperature
Compensation (MTC).

4.4.1 Temperature Calibration Without ATC Probe

1. Switch the meter on. Press the MODE key to select
temperature mode, [Temp].

2. Press the CAL/MEAS key to enter temperature
calibration mode. The primary display indicates the pH
value, and the secondary display shows the
temperature.

3. Press ! or " key to select temperature value that
matches the temperature reading shown in your
reference thermometer.

4. Once you have selected the correct temperature,
press CON key to confirm.

5. The CON indicator flashes for one second and
disappears.

6. Press CAL/MEAS key to return to the pH
measurement mode.

NOTE: To exit this program without confirming the
temperature calibration value, DO NOT press CON. Press
CAL/MEAS instead.

Figure 18: Temperature

Calibration

16

4.4.2 Temperature Calibration With ATC Probe

1. Make sure the ATC probe is attached to the meter.
Refer to Figure 7 in Section 3.2.2.

2. Switch the meter on. Note the ATC indicator.

3. Press the MODE key to select temperature mode,
[Temp].

4. Dip the ATC probe into a solution of known
temperature (i.e. a temperature bath). Allow time for
the temperature probe to stabilize.

5. Press the CAL/MEAS key to enter temperature
calibration mode. The primary display indicates the
pH value, and the secondary display shows the
temperature.

6. Press ! or " key to select temperature.

7. Once you have selected the correct temperature,
press CON key to confirm.

8. The CON indicator flashes for one second and
disappears.

9. Press CAL/MEAS key to return to the pH
measurement mode.

NOTE: To exit this program without confirming the
temperature calibration value, DO NOT press CON.
Press CAL/MEAS instead.

Figure 19: Temperature calibration

with temperature probe

17

4.5 Calibration Procedure for Relative mV Measurements (For pH 100 Only)

Relative millivolt calibration is used in ISE
measurements, where it is common to use the lowest
concentration mV value as the base value for
measurements. All subsequent measurements will
then be based on this reference value. For Relative
mV calibration, carry out the following procedure:

1. Press the MODE key to enter the Relative mV
mode.

2. The primary display shows the absolute mV
reading while secondary display shows the
temperature.

3. On pressing the CAL key, the calibration mode is
activated. The ‘CAL’ indicator is displayed on the
LCD. The rest of the display remains the same.

4. With the Ml/! and MR/" keys, adjust the
displayed absolute mV value to the base value
required e.g. 350.0 mV (Figure 20).

NOTE: To exit this mode or re-enter the desired value

without confirming, DO NOT press CON key.
Press the CAL/MEAS key instead.

5. Press CON key to confirm the calibration. The
CON indicator flashes for one second and
disappears.

6. The LCD now displays 0 mV reading. The meter
is now calibrated for Relative mV measurements.

7. On pressing the CAL/MEAS key, the meter
returns to the measurement mode. The primary
display now indicates the Relative mV readings,
bearing in mind that the selected base value is

350.0 mV.

The value displayed is calculated as follows:
Displayed Value = (Absolute mV reading) – (Relative

mV Base Value)

NOTE: For pH 100 model, you can check the Relative mV base value in the SETUP pro gram
P2.4.

Figure 20: Relative mV calibration (For

pH 100 only)