Instruction Manual
CyberScan CON 10/100/200
Hand-held Conductivity/TDS/Temperature Meter
Technology Made Easy ...
68X075513
09/2001 Rev 3
Preface
This manual serves to explain the use of the CyberScan series Conductivity meters. The models covered are the CyberScan CON 10, CyberScan CON 100 and CyberScan CON 200 portable conductivity and total dissolved solids meters.
This manual functions in two ways: first, as a step by step guide to help the user operate the meter; second, it serves as a handy reference guide.
This manual is written to cover as many anticipated applications of the CyberScan Conductivity meters as possible. If there are doubts in the use of the CyberScan Conductivity 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.
The information presented in this manual is subjected to change without notice as improvements are made, and does not represent a commitment on the part of Eutech Instruments Pte Ltd.
Copyright © 1998 Eutech Instruments Pte Ltd. All rights reserved.
Revised in September 2001.
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TABLE OF CONTENTS |
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1 |
INTRODUCTION |
1 |
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2 DISPLAY AND KEYPAD FUNCTIONS |
2 |
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2.1 |
Display |
2 |
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2.2 |
Keypad |
3 |
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3 |
PREPARATION |
5 |
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3.1 |
Inserting the Batteries |
5 |
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3.2 |
Attaching the electrode holder onto the meter |
7 |
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3.3 |
Attaching the electrode onto the electrode holder |
8 |
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3.4 |
Connecting the A.C. adapter |
8 |
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3.5 |
Connecting the RS 232C cable (only for CyberScan CON 200) |
9 |
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4 |
CALIBRATION |
12 |
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4.1 |
Standard solutions for calibration |
12 |
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4.2 |
Preparing the meter for calibration |
12 |
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4.3 |
Calibration procedure |
13 |
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5 |
MEASUREMENT |
19 |
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5.1 |
Automatic Temperature Compensation |
19 |
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5.2 |
Manual Temperature Compensation |
20 |
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5.3 |
Taking measurements |
21 |
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6 MEMORY FUNCTIONS (IN CYBERSCAN CON 100 & 200 ONLY) |
22 |
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6.1 |
Data Input |
22 |
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6.2 |
Memory Recall |
22 |
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6.3 |
Memory Clear |
23 |
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7 PRINT FUNCTION (IN CYBERSCAN 200 ONLY) |
24 |
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7.1 |
Printing data |
24 |
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7.2 |
Printing errors |
25 |
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7.3 |
Sending data to the computer |
25 |
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7.4 |
Printing measurement data |
25 |
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7.5 |
Printing data from memory |
25 |
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8 SETTING UP THE CYBERSCAN (FOR CYBERSCAN CON 100/200 ONLY) |
27 |
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8.1 |
SETUP program |
27 |
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8.2 |
Program 1: Common functions |
28 |
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8.3 |
Program 2: Instruments Setup |
30 |
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8.4 |
Program 3: TDS Setup (in CyberScan CON 200 only) |
33 |
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8.5 |
Program 4: Communication Setup (in CyberScan CON 200 only) |
35 |
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9 CYBERCOMM POTRABLE - DATA ACQUISITION SOFTWARE (DAS FOR |
38 |
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CYBERSCAN CON 200 ONLY) |
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9.1 |
System Requirements |
38 |
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9.2 |
Loading CYBERCOMM PORTABLE |
38 |
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9.3 |
Running CyberComm Portable |
44 |
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9.4 |
Capturing And Printing Data Into Computer Using CyberComm Portable |
48 |
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9.5 |
Trouble-shooting Guide |
49 |
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10 TROUBLESHOOTING & ELECTRODE CARE |
50 |
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10.1 |
Troubleshooting |
50 |
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10.2 |
Electrode Care |
52 |
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11 |
ADDITIONAL INFORMATION |
53 |
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12 ACCESSORIES AND CALIBRATION BUFFER SOLUTIONS |
55 |
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12.1 |
Replacement Meter and Meter Accessories |
55 |
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12.2 |
Calibration Solutions |
56 |
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13 |
SPECIFICATIONS OF CYBERSCAN CON 10/100/200 |
57 |
14 |
WARRANTY & RETURN OF ITEMS |
58 |
1 INTRODUCTION
Thank you for selecting Eutech Instruments portable meter. This meter is a microprocessorbased instrument that is designed to be handy, user-friendly and capable of allowing one-hand operation. It has a large customized LCD for clear and easy reading. It also has user-friendly features, all of which are accessible through the membrane keypad. It is a unique and intelligent instrument that has capability to cater to the preferences of the discerning individual. You have one of three models:
•CON 10 meter:
•CON 100 meter:
•CON 200 meter
Your meter includes a conductivity electrode (cell constant K = 1.0) with built-in temperature sensor (Order Code: EC-CONSEN41B for CON 10, EC-CONSEN21B for CON 100/200), and batteries. Please read this manual thoroughly before operating your meter.
1
The LCD has a primary and secondary display. The primary display shows the measured conductivity or TDS reading. The secondary display shows the measured temperature. The display also shows error messages, keypad functions and program functions. See Figure 1.
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Figure 1: Full LCD Screen |
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1. |
HOLD indicator |
9. Temperature coefficient in % |
16. |
CONDuctivity mode indicator |
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2. |
SETup mode indicator |
10. |
Temperature indicator |
17. |
Low battery indicator |
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3. |
AUTO indicator |
11. |
Automatic Temperature |
18. |
Index number of the memory |
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Compensation indicator |
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recalled or stored (except CON 10) |
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4. MEASurement mode indicator |
12. |
TEMPerature mode indicator |
19. MEMory recall mode indicator |
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(except CON 10) |
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5. |
CALibration indicator |
13. |
TDS mode indicator |
20. |
ERRor indicator |
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6. parts per thousand or parts per million |
14. |
ON/OFF indicator - option is |
21. |
Printer indicator (for CON 200 |
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indicator (for CON 10 & 200 meters |
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turned on |
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only) |
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only) |
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7.milligrams per liter or grams per liter |
15. |
ON/OFF indicator - option is |
22. |
READY indicator |
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indicator (for CON 10 & 200 meters |
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turned off |
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only) |
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8. microsiemens or millisiemens indicator |
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2
The large membrane keypad makes the instrument easy to use. Each button, when pressed, has a corresponding graphic indicator on the LCD. See Figure 2. Some buttons have several functions depending on its mode of operation.
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Key |
Function |
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Powers on and shuts off the meter. When you switch on the meter, the meter starts |
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ON/OFF |
up in the mode that you last switched off from. For example, if you shut the meter off |
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in TDS measurement mode (only in CON 10 & CON 200 meters), the meter will be in |
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TDS measurement mode when you switch the meter on. |
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HOLD |
Freezes the measured reading. To activate, press HOLD while in measurement |
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mode. To release, press HOLD again. |
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Selects the measurement parameter. |
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MODE |
~ CON 10 meter: Toggles between conductivity, TDS and temperature. |
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~ CON 100 meter: Toggles between conductivity and temperature. |
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~ CON 200 meter: Toggles between conductivity, TDS and temperature. |
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Toggles between Calibration and Measurement mode. |
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CAL/MEAS |
NOTE: Temperature calibration is available from conductivity calibration mode; see |
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section 4.3 for directions. |
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ENTER function: Press to confirm values in Calibration mode and to confirm |
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ENTER / |
selections in SETUP mode. |
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RANGE |
RANGE function: Press to enter manual ranging function. |
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The MEAS indicator blinks while in manual ranging function. |
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MI/! & MR/" |
In Measurement mode: |
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Press MI/! (memory input) to store values with its corresponding temperature values |
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(CyberScan CON |
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100/200) |
in the memory. Press MR (memory recall) to retrieve data from memory. |
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! & " |
In Calibration mode: |
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Press to scroll through calibration values. |
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(CyberScan CON |
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In SETUP mode: |
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10) |
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Press to scroll through the setup subgroup programs. |
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SET |
Takes you into the SETUP mode. This mode lets you customize meter preference |
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(CyberScan CON |
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and defaults, and view calibration, electrode offset data and select cell constant. |
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100/200 only) |
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Sends the displayed data through the RS 232C connector to the peripheral device |
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(CyberScan CON |
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(computer or printer). |
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200 only) |
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3
CyberScan CON 10 |
CyberScan CON 100 |
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CyberScan CON 200
Figure 2: Keypad
4
Four AAA batteries are included with your meter.
1.Use a Philips screwdriver to remove the two screws holding the battery cover. See Figure 3 below.
2.Lift meter stand to expose battery cover. Remove battery cover.
3.Insert batteries. Follow the diagram inside the cover for correct polarity.
4.Replace the battery cover into its original position using the two screws removed earlier.
Remove Screws
Figure 3: Back panel of meter showing battery compartment
5
To connect the Conductivity/TDS electrode with built-in temperature sensor:
a)During this operation, it is important that water does not get onto the BNC connector. Also avoid touching the connector with soiled hands.
Slide the electrode connector of electrode over the socket of the meter (BNC connector). Ensure that the slot of the connector is inline with the protrusions of the socket.
Rotate the connector clockwise until it locks. Be careful not to use excessive force in this operation.
Figure 4: Connecting the Conductivity /TDS probe
b)The built-in temperature probe uses a phono jack to connect with the socket on the meter. Insert the jack into the socket as shown in Figure 5.
Figure 5: Connecting the built-in temperature sensor
6
The meter has a slot on the side for the attachment of the electrode via the electrode holder.
a)The meter provides a slot on the side of the instrument for the electrode holder. Hold the electrode holder over the slot of the meter. Ensure the flange of the electrode holder is facing the slot. Note the orientation to make sure that it is the orientation that you desire (see figure below).
b)Gently slide the flange of the electrode holder into the slot. Ensure that the electrode holder is fixed properly into the slot.
Figure 6: Attaching the electrode holder to the meter
Figure 7: Sliding the electrode holder into the slot
The electrode holder can be attached in different positions (multi-position) as shown. This
allows you the flexibility in measurement and storage.
Figure 8: Multi-position of the electrode holder
7
Your meter comes complete with an electrode holder. It is designed for easy use and installation. Care must always be taken to avoid use of excessive force in the process of attaching these components.
a)Align the end of the electrode (sensor side) with the hole of the holder. Note that the top side of the holder is where the slot begins.
b)Always ensure that the diameter of the electrode you intend to use is 12 mm. Otherwise, the electrode may not fit properly.
c)Insert the electrode into the hole of the holder until the top housing of electrode touches the top of the holder. Remember not to force the electrode into the holder.
The CyberScan CON 10/100/200 meter has the flexibility of operating from an A.C. power source. This is extremely useful if you have an A.C. source available near the meter (e.g. Laboratory).
1.Before plugging in the A.C. adapter, switch off the meter and the power source of the A.C. adapter. This is a safety precaution that should be adhered to safeguard your meter.
2.The A.C. adapter should have the following settings: Output Voltage: 9 V D.C.
Current: 500 mA
NOTE: Ensure that the input mains voltage (110/220/240 V) matches your adapter requirements.
3.Insert the D.C. jack into the socket of the meter as shown in Figure 9.
4.Switch on the power to the adapter, followed by the meter.
8
Figure 9: Inserting the A.C. power adapter
The CyberScan Conductivity CON 200 meter provides an RS 232C output for you to transmit the reading either to a printer or a computer. This is extremely useful in instances where the meter is used for continuous monitoring of a certain process or experiment. The data output to the printer or computer can be then 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. LOTUS 123 C, Microsoft Excel, etc.).
Eutech Instruments also provides software that can capture the data transmitted into an ASCII file for later use.
a)Open the communication port cover located at the bottom of the meter as shown in Figure 10. Do not use excessive force when doing this.
b)Noting the orientation of the RS 232C connector, plug the RS 232C male connector into the RS 232C port of the meter.
c)Fasten the connector by fastening the two screws at the side of the male connector.
9
Location of
RS 232 port
Figure 10: The CyberScan CON 200 RS 232 port
The CyberScan CON 200 meter has a 9-pin female RS 232C connector with the following pinout:
PIN NO |
DESCRIPTION |
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1 |
- |
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2 |
Transmit Data |
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3 |
- |
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4 |
DSR (Data Set Ready) |
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5 |
GND |
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6 |
- |
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7 |
CTS (Clear to Send) |
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8 |
- |
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9 |
- |
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A one-is-to-one connection can be made with a 9-pin RS 232C port of the computer.
In case the meter output has to be sent to a 25-pin RS 232C connector, the following cable configuration may be used:
10
CyberScan CON 200 |
25-pin connector |
|
2 |
(TxD) --------------------------------------- |
(RxD) 3 |
4 |
(DSR) -------------------------------------- |
(DTR) 20 |
5 |
(GND) -------------------------------------- |
(GND) 7 |
7 |
(CTS) --------------------------------------- |
(RTS) 4 |
Refer to Figure 11 for the pin number position.
5 |
4 |
3 |
2 |
1 |
9 |
8 |
7 |
6 |
Figure 11: Pin number position of the 9-pin RS 232 port
The meter uses hardware handshake i.e. the meter expects both DSR and CTS lines to be active before it sends data. If the key is pressed while the printer is not ready or if the printer is off, the meter displays error by blinking the printer and the ERR annunciators alternately, and waits for the printer to be ready. While the meter is displaying printer error, the user may press the CAL/MEAS key to return to the measurement (MEAS) mode.
Figure 12: Error in printing
11
Select conductivity or TDS calibration solution (available from the distributor) which is close to the expected conductivity of the sample that you want to measure. Ensure that the calibration solution which you use comes with a “Temperature vs Conductivity” or a “Temperature vs TDS” label on it. This information is required during calibration.
NOTE: Eutech’s calibration solutions are supplied in shatterproof bottles of 480 ml. Refer to section 12 for Ordering Information and details for other accessories.
In CON 100 meter, calibration is only done in the conductivity (COND) mode. The CON 10 and CON 200 meters allow calibration either in the conductivity range or the TDS range but not both. As such, a calibration in the TDS mode of a particular range will replace a prior calibration in the conductivity mode if both ranges are the same (i.e. Range 2 in COND and Range 2 in TDS).
In general, it is recommended that calibration be performed around a point close to 2/3 of full scale. For better accuracy, perform a calibration close to the expected measurement range prior to the measurement.
Corresponding TDS values are obtained by multiplying the recommended conductivity values by the TDS factor. The default TDS factor is 0.5.
Before starting calibration, make sure you are in the correct measurement mode. When you switch on the meter, the meter starts up in the measurement mode you shut it off in previously. For example, if you shut the meter off in COND measurement previously, the meter will come back into COND measurement when you switch the meter on.
Before calibrating, select the correct mode by pressing the MODE key. There are 3 modes:
COND |
for conductivity measurements, |
TDS |
for total dissolved solids (TDS) measurements, |
TEMP |
for temperature measurements. |
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1.If necessary, press the MODE key to select COND mode. The s indicator appears in the
upper right hand corner of the display.
2.Rinse the probe thoroughly with de-ionized water or a rinse solution.
3.Dip the probe into the buffer solution. The end of the probe must be completely immersed into the buffer solution. Stir the probe gently to create a homogeneous sample. Agitate the probe in the solution to dislodge air bubbles that are trapped in the probe.
4.Press the CAL/MEAS key to enter the COND calibration mode. The CAL indicator will be shown. The primary display will show the measured reading.
5.Use the ! or " key for CON 10, or MI/! or MR/" key for CON 100/200, to adjust the measured value to that of the standard solution.
6.Wait for the measured conductivity value to stabilize. See Figure 13 for the conductivity calibration procedure.
NOTE: To exit without confirming the calibration, press the CAL/MEAS key.
For calibration in the other ranges (maximum: 5 ranges, repeat steps of the procedure, this time using a solution with a conductivity of a different range).
Figure 13: Conductivity calibration procedure
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Two methods are available for TDS calibration. The first method (Method 1) applies to both CyberScan CON 10 and 200 meters. Method 1 relies on the availability of a table that shows the TDS values of the TDS calibration buffer solution at various temperatures. The second method (Method 2) relies on the availability of conductivity-to-TDS conversion factors at standard temperature such as at 25 ° C. Method 2 applies only to CyberScan CON 200 meter.
The advantage of Method 1 is that it is simpler to perform than Method 2. However, one should note that much of calibration buffer solutions do not reference the TDS values at temperatures other than 25 ° C, and that without the use of proper conductivity-to-TDS conversion factor, this calibration may not be as accurate over a wider range of measurement.
Also, in some cases, the meter may not accept the TDS value input into it giving an error message because the calibration value exceeds the allowable slope adjustment limits of the meter when using a default conductivity-to-TDS conversion factor such as 0.50.
Method 2 overcomes the shortcomings of Method 1 by ensuring the TDS measurement accuracy over a broader range of TDS measurements around the calibration value. The meter will virtually accept any TDS calibration input from virtually any commonly used TDS calibration buffer solution. The only requirement is that the buffer solution indicates the TDS at a standard temperature such as 25 ° C.
NOTE: It is important to have knowledge of the conductivity-to-TDS conversion factor or the factor can be calculated using the formula below:
Factor = |
TDS |
|
|
Conductivity |
@ 25° C |
||
|
|||
|
|
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TDS calibration: Method 1
1.Select the TDS standard solution with a value that is closest to the measurements expected in the
sample (in this manual, the KCI standard solution 1413 S is about 706.5 ppm).
Check this number by multiplying the conductivity reading by the factor and the result should be the TDS in equivalent units.
2.First, pour enough of the selected sample into two separate clean containers so as to allow the probe to be immersed up to the bleed hole.
3.Rinse the end of the probe into one of the containers by gently stirring it in the standard solution. This helps remove contaminants that offset the calibration and introduce error.
4.Dip the rinsed probe into the other container containing the unused solution.
5.Allow the probe some time to stabilize to the solution temperature.
6.Select the TDS mode using the MODE key. Note the temperature of the calibration solution and find the corresponding TDS value of the calibrating solution at that temperature.
For example, the meter displays the temperature
of 27 ° C, and a TDS value of 720 ppm (when normalized to 25 ° C) with the uncompensated value at 27 ° C should be 733 ppm.
7.Upon pressing the CAL/MEAS key, the CAL annunciator on the screen will blink, indicating the calibration mode is on. The LCD displays the uncompensated TDS value.
Figure 14: TDS calibration procedure Method 1
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8.Use the ! or " key for CyberScan CON 10, or MI/! or MR/" key for CyberScan 200 to scroll up or down respectively to the value of the standard solution at 25 ° C.
9.Press the ENTER/RANGE key to confirm the calibration. The CAL indicator will stop flashing and remains on the screen for 3 seconds. Then the meter switches back into the measurement mode and the calibrated value, compensated to the current temperature, is shown on the display.
The display will now show 706 ppm that is the correct value of the standard solution at 27
° C. Measurements can be performed now.
10.To exit from this process without confirming the calibration, press the CAL/MEAS key.
For calibration in the other ranges (maximum: 5 ranges for CON 200 only) repeat steps of the procedure as outlined in Method 1, this time using a solution with a TDS of a different range.
Error upon confirmation
If an ERR error message appears, it probably means that the meter does not allow the slope adjustment that has been made via the calibration procedure given the value of the conductivity-to-TDS conversion factor currently in the memory.
If you are using CyberScan CON 200 meter, consider Method 2 of the TDS calibration. Press the CAL/MEAS key to escape the ERR message and abort the calibration attempt.
Inaccuracies after calibration
If the TDS value is not within 2 digits of the TDS standard solution value at 25 ° C or 20 ° C (depending upon which value was selected in the SETUP), an adjustment of either of the following is required.
•Temperature coefficient
•Calibration
•Conductivity-to-TDS conversion factor (see Method 2)
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