Eutech instruments Alpha COND 500 User Manual

Alpha COND 500

Controller/Transmitter

uS / mS / ºC

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Preface

This manual serves to explain the use of the Alpha COND 500 transmitter. It
functions in two ways, firstly as a step by step guide to help you to operate the
transmitter. Secondly, it serves as a handy reference guide. It is written to cover as
many anticipated applications of the transmitter as possible. If there are doubts in
the use of the transmitter, please do not hesitate to contact the nearest Authorized
Distributor.

Thermo Scientific will not accept any responsibilit y for damage or malfunction to th e
transmitter caused by improper use of the instrument.

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
Thermo Scientific.

Copyright © 2009
All rights reserved

TABLE OF CONTENTS
1

INTRODUCTION...................................................................................1

2 PREPARATION ....................................................................................2

2.1 POWER SUPPLY REQUIREMENTS (SL2 POSITION)...........................................3

2.2 CONNECTING THE ELECTRODE AND TEMPERATURE SENSOR (SL1 POSITION)....3

3 INSTALLATION ....................................................................................5

3.1 MECHANICAL DIMENSIONS............................................................................5

3.2 WALL MOUNT..............................................................................................5

3.3 PANEL MOUNT ............................................................................................6

4 DISPLAY AND KEYPAD FUNCTIONS................................................7

4.1 DISPLAY .....................................................................................................7

4.2 KEYPAD......................................................................................................8

5 CALIBRATION......................................................................................9

5.1 IMPORTANT INFORMATION ON TRANSMITTER CALIBRATION...............................9

5.2 TEMPERATURE CALIBRATION ......................................................................11

5.3 CONDUCTIVITY CALIBRATION ......................................................................12

6 ADVANCED SETUP FUNCTIONS.....................................................13

6.1 RANGE AND ZOOMING SELECTION SETTING..................................................13

6.2 TEMPERATURE COMPENSATION SETTING.....................................................15

6.3 HOLD CURRENT SETTING..........................................................................18

6.4 OUT-OF-RANGE CURRENT SETTING ............................................................18

6.5 TEMPERATURE COEFFICIENT AND NORMALIZATION TEMPERATURE SETTING ....19

6.6 CELL CONSTANT SETTING ..........................................................................20

6.7 LINE RESISTANCE SETTING .........................................................................20

6.8 VIEWING CALIBRATION POINT......................................................................21

6.9 VIEWING THE ELECTRODE DATA..................................................................21

6.10 RESET FUNCTION ......................................................................................22

7 FACTORY DEFAULT SETTINGS ......................................................23

8 TROUBLE SHOOTING GUIDE...........................................................24

9 SPECIFICATIONS ..............................................................................25

10 ACCESSORIES ..................................................................................26

11 WARRANTY........................................................................................27

12 RETURN OF ITEMS............................................................................27

A

A

1 INTRODUCTION

Thank you for selecting an Alpha COND 500 2-Wire Transmitter. This isolated
output 4-20mA transmitter is a sturdy microprocessor-based instrument that
measures conductivity and temperature and transmits its output via the 2-wire
power supply loop.

This transmitter has many user-friendly features – all of which are completely
accessible through the water-resistant membrane keypad. Your transmitter includes
an instruction manual and a warranty card.

Please read this manual thoroughly before operating your transmitter.

lpha COND

A

MEAS

MEAS

READY

READY

1413

1413

.

.

2-wire Conductivity Transmitter

2-wire Conductivity Transmitter

500

μ

S

μ

S

°C

°C

TC

TC

2 PREPARATION

Remove screws from the four corners at the back of the Transmitter, and remove
back cover.

Connectors should be exposed as follows:

NC
NC

NC

Figure 1 – Connection Guide

All wiring is done on 2 detachable connectors: –

1. 9-pin connector (located on SL1 position) for Conductivity electrode and
temperature sensor; &

2. 3-pin connector (located on SL2 position) for power supply.

Using a suitable screwdriver, loosen screws from top of connector.
When inserting the wires, always hold connector with top screws facing up.

2.1 Power Supply Requirements (SL2 Position)

The Alpha COND 500 transmitter requires a 12 to 24V DC power supply. Other
Transmitters and/or a chart recorder may be connected in the loop.

1. Insert positive loop wire from power supply to pin 1, tighten screw.

2. Insert negative loop wire to pin 2, tighten screw. This wire may be linked to
a chart recorder or to negative terminal of power supply.

Alpha
COND 500

1

2

Power
Supply

Chart
Recorder

2.2 Connecting the Electrod e and Temperature Sensor (SL1 Position)

2.2.1 To connect the Conductivity electrode:

The Alpha COND 500 transmitter accepts any industrial electrodes for conductivity
measurements and they are usually offered with bare wires.

1. Insert the electrode’s conductivity wire Low into pin 3 of SL1 connector.
Tighten the screw.

2. Insert the electrode’s conductivity wire High into pin 4 of SL1 connect or.
Tighten the screw.

Pt 100 Input wire

Pt 100 Sense wire

Pt 100 Return wire

Conductivity wire High
Conductivity wire Low

Shield wire

To Electrode

2.2.2 To connect ATC temperature sensor:

For Automatic Temperature Compensated (ATC) Conductivity readings, an in-built
temperature sensor is usually integrated in the industrial conductivity electrodes.
Otherwise, a separate 100Ω Pt RTD temperature probe can be used.

3 wire temperature sensor

1. Insert the Pt100 input wire to pin 5 of SL1 connector. Tighten the screw.

2. Insert the Pt100 sense wire to pin 6 of SL1 connector. Tighten the screw.

3. Insert the Pt100 return wire and the shield wire to pin 7 of SL1 connector.
Tighten the screw.

2 wire temperature sensor

1. Take a small length of wire and short pins 5 and 6 of SL1 connector. Insert
Pt 100 sense wire into pin 6 of SL1 connector and tighten the screws.

2. Insert Pt 100 return wire and the shield wire to pin 7 of SL1 connector.
Tighten the screw.

IMPORTANT: It is necessary to connect the SHIELD wire to the pin 7 as stat ed
above to eliminate possible oscillation of the conductivity and/or temperature
reading due to electrical noise or interference.

Ensure that no bare wires are exposed and all screws are tightened for p rop er
contact.

3 INSTALLATION

3.1 Mechan ical Dimensions

Alpha COND 500

2-wire Conductivity Transmitter

3.2 Wall Moun t

3.3 Panel Moun t

1. Prepare panel cut-out of

92.0 mm by 92.0 mm

2. Remove back cover of
transmitter and slide it
through panel cut-out

Panel (side)

4. Thread rods through
lugs until transmitter
is held in place against

panel

3. Atta

ch lugs to either

side

of transmitter

r

r

4 DISPLAY AND KEYPAD FUNCTIONS

4.1 Disp lay

The LCD has a primary and secondary display.

• The primary display shows the measured conductivity value.

• The secondary display shows the measured temperature. In Calibration

mode, measured conductivity values are displayed here.

Primar

y Display

(Upper

Display)

12

3

4

16
15

14

13

1. SETUP - Setup mode
indicator

2. MEAS - Measurement
mode indicator

3. CAL - Calibration mode
indicator

4. R. – Line Resistance in
Ohms

SETUP MEAS CAL

ON

K=

-.8.8.8

ERR

-1.8.8

11

12

5. % - Temperature

6. mS - Milli Siemens

7. µS - Micro Siemens

8. °C - Temperature

10

Coefficient
indicato

indicator

indicator

indicator

Secon da r y D

(Lower Disp

9. ATC - Automatic Temp.
Compensation

10. K = - Cell Constant
indicator.

11. ERR – Wrong key
press error
indicato

12. - Electrode indicator

.8

ispla y

lay)

R.

%

mS

μ

S

°C

ATC

13. - Calibration
standard indicator

14. ON /OFF– READY set

up enable/disable
indicator.

15. HOLD – Hold indicator

16. READY – Ready

5
6
7

8

9

indicator

A

A

4.2 Ke ypad

Alpha C

MEAS

MEAS

READY

READY

141

141

2-wire Conductivity Transmitter

2-wire Conductivity Transmitter

OND 500

3

3

°C

°C

.

.

μ

S

μ

S

TC

TC

The four-button keypad allows easy and quick operations of the Transmitter.

Key Function
CAL Brings you directly into the Calibration mode.

If you were in Conductivity Measurement mode, press CAL to enter
Conductivity Calibration mode.

▲ / ▼ To scroll through the various submenus

To increment/decrement values or toggle between options (in the
SETUP/CAL modes)

When pressed together, serves as escape function to return to MEAS mode
from any point (CAL or SETUP modes).

ENT To confirm your calibration values in Calibration mode.

To confirm selections in SETUP mode.
While in MEAS mode, pressing ENT takes you directly to SETUP submenu

NOTE: Error indicator ‘ERR’ will be displayed if an invalid key is pressed during a
particular operation.

5 CALIBRATION

5.1 Important Information on Transmitter Calibration

Calibration should be carried when you are using your transmitter with a new
electrode for the first time or when you suspect that the transmitter/electr ode is out
of calibration. Your transmitter allows you to perform temperature calibration and
conductivity calibration.

As temperature readings affect the accuracy of conductivity measurements, it is
recommended that temperature calibration should be carried out only if the
temperature value displayed on the transmitter is different from that of a calibrated
thermometer. A temperature offset calibration of ± 5 °C from the default reading is
allowed. Once a temperature calibration is performed, conductivity calibration
should be carried out to ensure the accuracy of conductivity measurements are
maintained.

Your transmitter has up to six selectable conductivity measuring ranges. The
selection for the sixth range, range 6 (0.00 to 199.9 mS/cm), only app ears in the
Setup mode if the cell constant is selected to be K =1.0 or K =10 whereas range
1(0.00 to 19.99uS/cm), will only appear when cell constant is selected to be K = 0.1
or K = 1.0. Other wise, the selection will be limited to five ranges only.

You can only calibrate one point in the measuring range that you have sel ected for
your process application. You have to recalibrate your transmitter ever y time you
change the measuring range since the calibration data of your transmitter will be
erased every time a new measuring range is selected.

During conductivity calibration, the transmitter allows a calibration windo w of ± 40%
from the measured default reading of the calibration standard. The minimum
allowable calibration point is 10% of the full scale reading of the range selected.

For best results, select a standard value close to the sample value you are
measuring. Alternatively use a calibration s olution value that is approximately 2/3
the full-scale value of the measurement range you plan to use. The follo wing table 1
lists the corresponding conductivity ranges. You shou ld calibrate, in the range that
you have selected, using a solution that falls between the values in the
“recommended calibration solution range” column.

Table 1

Conductivity

Measuring Range

0.00 Æ 19.99 μS 6.00 to 17.00 μS

0.0 Æ 199.9 μS 60.0 to 170.0 μS
0 Æ 1999 μS 600 to 1700 μS

0.00 Æ 10.00 mS 6.00 to 7.00 mS

0.00 Æ 19.99 mS 6.00 to 17.00 mS

0.0 Æ 199.9 mS 60.0 to 170.0 mS

To view current calibration point, see Section 6.8 - Viewing Calibration .
Do not reuse calibration solutions after calibration. Contaminants in the s olution can

affect the calibration, and eventually the accuracy of the measur ements. Use fresh
calibration solution each time you calibrate your meter.

NOTE: Your transmitter is factory set to a temperature coefficient of 2.1% per °C.

For most applications this will provide good results. The factory default value
for normalization temperature is 25 °C. If you need to set a different
temperature coefficient or change the normalization temperature va lue, see
Section 6.5 - Temperature Coefficient and Normalization Temperature
Setting for further information.

NOTE: In the CAL mode, the 4/20 mA output current will be automatically held.
‘HOLD’ will be displayed on LCD. After calibration is performed and when the
transmitter is back to the measurement mode, the ‘HOLD’ is automatically released.
Please refer to section 6.3 for more details.

Recommended Calibration Solution

Range

5.2 Temperature Calibration

You need to perform temperature calibration if your transmitter temperature reading
is inaccurate or if the transmitter’s cell constant setting is changed. It is because the
transmitter’s temperature offset calibration will be erased once a new cell constant
is selected.

It is important to ensure that temperature calibration is carried out first prior to
conductivity calibration since temperature readings affect the accuracy of
conductivity measurements. Your transmitter allows a one point temperature
calibration using reference of a thermometer kno wn to be accurate. Please refer to
Section 6.2 - Temperature Compensation Setting for temperature calibration
procedure.

5.3 Conductivity Calibration

A 1-point Calibration is required for this transmitter. If
the calibration process is aborted, your transmitter
will revert to the previous calibration data.

1. Organize your calibration standard solution
in two beakers – one for rinsing and the
other for calibration. Prepare separate de­ionized water for electrode rinsing.

2. Rinse the electrode in de-ionized water and
then rinse with the calibration standard.

3. Dip the electrode to the calibration standard
intended for calibration and swirl gently to
create a homogenous sample. Wait for the
reading to stabilize.

4. Press the CAL key to enter calibration
mode. The upper display will show the
measured reading based on the last
calibration setting whereas the lower display
will show the measured default reading of
the standard.

5. Use the ▲ or ▼ keys to adjust the upper
display to the calibration standard value.

Note: You can offset the conductivity reading within
± 40% from the default reading of the standard. The
minimum allowable calibration point is 10% of the full
scale reading of the range selected.

6. Press the ENTER key to confirm the calibration value and to return to the
measurement mode.

Note: To exit this program without confirming the calibration, press the ▲ and ▼
keys together (Escape).

Note: When there is a calibration error, the buffer icon an d ERR annunciator will
appear together with a blinking electrode icon. Press both ▲ and ▼ keys together
TWICE to return to the measurement mode.

HOLD

HOLD

MEAS

1578

25.5

CAL

1578

1578

CAL

1413

1578

ATC

μ

S

°C

μ

S

μ

S

6 ADVANCED SETUP FUNCTIONS

The advanced setup mode lets you customize your transmitter’s preferences and
defaults. This transmitter features different sub groups that organize all setup
parameters. The sub-groups are:

6.1 Range and Zooming Selection Setting

Your COND 500 transmitter provides six selections of conductivity measurement
ranges to suit your process application nee ds. Zoomin g selection is availa ble where
both the 4 mA and 20 mA output current can be assigned to specific conductivity
values for a more refined output.

From the measurement mode,

1. Press the ENT key to enter the setup mode.
Transmitter displays ‘SEt rng’ indicating the
range setup mode.

2. Press the ENT key again. The display will show
the last set conductivity measurement range.

3. Use the ▲ or ▼ keys to scroll through the six
ranges and press the ENT key to select your
desired range. The transmitter will now switch to
the zooming selection and display the low zoom
value setup.

NOTE: Range 6 selection page will only appear in the
setup mode when the cell constant is selected as K =

1.0 or K = 10. Range 1 will only appear when cell

constant is selected as K =0.1 or K =1.0

SETUP

HOLD

SETUP

HOLD

19.99

μ

S

1

Six Range selection

4. For zooming setting, use the ▲ or ▼ keys to set
the conductivity low zoom value for the 4 mA
current and press the ENT key to confirm. The
transmitter now displays the high zoom value
setup.

5. Use the ▲ or ▼ keys again to set the
conductivity high zoom value for the 20 mA
current and press the ENT key to confirm and
return to the range setup mode.

6. Press both ▲ and ▼ keys together to return to
the measurement mode.

SETUP

HOLD

SETUP

HOLD

0.00

L

19.99

Hi

μ

S

μ

S

6.2 Temperature Compensation Setting

Conductivity readings are affected by temperature. Under varying temperature
conditions, use ATC to compensate for the conductivity values. If temperature of
sample is constant, and a temperature sensor/probe is not available, Manual
Temperature Compensation can be utilized.

6.2.1 Automatic Temperature Compensation

For automatic temperature compensation (ATC) selection, connect the ATC sensor
to the transmitter, as described in Section 2.2.2.

1. Press the ENT key to enter the setup mode. Use the ▲ or ▼ keys to scroll
through the sub-menus till LCD displays ‘

2. Press the ENT key to enter the temperature compensation mode. Display
shows ‘
then press the ENT key.

3. Dip ATC sensor into a s olution of known temperature (i.e. a temperature
bath). Allow time for temperature sensor to acclimatize with surrounding
bath temperature.

4. Use S or T keys to adjust the displayed reading to the correct
temperature value according to the temperature bath. Maximum
adjustments allowed is ± 5

5. Once you have adjusted to the correct temperature value, press the ENT
key to confirm the setting.

6. Press S and T keys together to return to the measurement mode.

The ATC indicator will light up on the LCD.
NOTE: If you are using a temperature sensor, the sensor must be submersed in

the liquid you are measuring.

AtC On’ or ‘AtC Off’. Use S or T keys to select ‘AtC On’ and

o

C (± 9 oF) from the default reading.

SEt oC’.

6.2.2 Manual Temperature Compensation

For manual temperature compensation you can set the process and calibration
temperatures. This allows calibration at a temperature other than the process
temperature. Example: setting a calibration temperature of 25°C lets you calibrate
using standard solutions at 25°C, even if your process temperature is different from
25°C.

From the measurement mode,

1. Press the ENT key and use ▲ or ▼ keys to select ‘

SEt oC’.

2. Press the ENT key to enter the temperature compensation mode. Display
shows ‘

AtC On’ or ‘AtC Off’. Use S or T keys to select ‘AtC Off’ and

then press the ENT key.

3. The primary display will show temperature (default is 25.0), and the
secondary display shows ‘P °C’’. This is the page for setting the
temperature of your process or sample by using an accurate thermometer
as reference.

4. Use ▲ or ▼ keys to set the transmitter to the temperature of your process
or sample. Press the ENT key.

5. The primary display shows temperature (default is 25.0), and secondary
display shows ‘C °C’. This is the page for setting the temperature of your
calibration solutions.

6. Use ▲ or ▼ keys to set the transmitter to the temperature of your
calibration solutions. Press the ENT key.

7. Press S and T keys together, to return to the measurement mode.

The transmitter will now compensate conductivity readings for the manually set
temperature (values taken from P °C’).

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

.

°C

.

ATC

SEHOTUP

LD

SEHOTUP

LD

SEHOTUP

LD

.

.

Temperature Compensation Setting Chart – Alpha COND 500 Transmitter

6.3 HOLD Current Setting

When Transmitter is in CAL or SETUP modes, it

SETUP

HOLD

automatically goes into a ‘HOLD’ mode.
To indicate Transmitter is in ‘HOLD’ mode, output current

can be set to 22 mA output by activating the ‘HLD On’.

1. Press the ENT key and use ▲ or ▼ keys to scroll
till LCD displays ‘SEt’ in the upper display; and
‘HLd’ in the lower display. Press the ENT key

SETUP

HOLD

again.

2. Upper display now shows ‘HLd’. Lower display will
show either ‘OFF’ or ‘On’. Use ▲ or ▼ keys to
toggle between ‘On’ or ‘OFF’. Press ENT to accept
selection.

3. Press S and T keys together, to return to the
measurement mode.

SETUP

HOLD

NOTE: If ‘HLd’ is set to ‘OFF’, then current output will be
equivalent to last measured value.

6.4 Out-of-Range Current Setting

The transmitter can be set to give a fix current output of 3.8 mA when the

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

conductivity readings exceed the zoom setting range. This Out
of Range indicator feature is applicable in the uS ranges only.

1. Press the ENT key and use ▲ or ▼ keys to scroll till
LCD displays ‘SEt’ in the upper display; and ‘org’ in
the lower display.

2. Press the ENT key again. Upper display now shows
‘org’. Lower display will show either ‘OFF’ or ‘On’. Use
▲ or ▼ keys to toggle between ‘On’ or ‘OFF’. Press
the ENT key to confirm the selection.

3. Press S and T keys together, to return to the
measurement mode.

NOTE: If ‘org’ is set to ‘OFF’, current output below the low
zoom setting will be at 4 mA, while current output above the
high zoom setting will be at 20 mA.

6.5 Temperature Coefficient and Normalization Temperature Setting

Since different process liquid may require different temperature coefficient factor for
its temperature compensation calculation, COND 500 transmitter allows 0 to 10%
temperature coefficient factor adjustment to cater for your different application
needs. You also have the selection of 25.0 °C or 20.0°C for the conductivity
measurement normalization temperature.

6.5.1 Setting the temperature coefficient

From the measurement mode,

1. Press the ENT key to enter the setup mode. Use
the ▲ or ▼ keys to scroll till LCD displa ys ‘SEt’
in the upper display; and ‘tPr’ in the lower
display.

2. Press the ENT key to view the temperature
coefficient setup page, ‘tC.O’.

3. Press the ENT key to enter the setup page and
use the ▲ or ▼ keys to set the temperature
coefficient value.

4. Press the ENT key to confir m your setting. The
transmitter will now switch to the normalization
setup page ‘tn.r’

6.5.2 Setting the normalization temperature

From Step 4 above,

1. Press the ENT key to enter the normalization
setup page.

2. Use the ▲ or ▼ keys to select the desired
normalization temperature (25.0 °C or 20.0°C).

SETUP

HOLD

.

°C

3. Press the ENT key to set the normalization
temperature.

4. Press S and T keys together, to return to
the measurement mode.

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

%

.

%

2.1

.

6.6 Cell Constant Setting

You can select up to three types of cell constant in the setup mo de: - K=1.0, K=0.1
or K=10.

From the measurement mode,

1. Press the ENT key to enter the setup mode. Use

SETUP

HOLD

the ▲ or ▼ keys to scroll till LCD displays ‘SEt’ in
the upper display; and ‘CEL’ in the lower display.

CEL

2. Press the ENT key to enter the cell constant setup
page.

3. Use the ▲ or ▼ keys to select the desired cell
constant and press the ENT key to confirm the
selection.

4. Press S and T keys together, to return to the

SETUP

K =

0.1

CEL

measurement mode.

6.7 Line resistance Setting

Line resistance of an electrode cable constitutes to error in measurement of high
conductivity values as in range 6. This error can be compensate d by inputting the
electrode cable line resistance value in the setup mode.

From Range 6 measurement mode,

1. Press the ENT key to enter the setup mode. Use
the ▲ or ▼ keys to scroll till LCD displays ‘SEt’ in
the upper display; and ‘Lnr’ in the lower display.

2. Press the ENT key to enter the line resistance
setup page.

3. Use the ▲ or ▼ keys to set the line resistance
value (0 to 50 ohms) and press the ENT key to
confirm the setting.

4. Press S and T keys together, to return to the
measurement mode.

NOTE: The line resistance setup mode can be accessed
only from range 6 measurement mode.

SETUP

HOLD

SETUP

HOLD

0.00

R.

6.8 Viewing Calibration Point

This mode lets you view the current calibration point and its range.
From the measurement mode of a selected measuring

range,

1. Press the ENT key to enter the setup mode. Use
the ▲ or ▼ keys to scroll till LCD displays ‘CAL’
in the upper display.

2. Press the ENT key to enter the calibration point
viewing page. The display will show the current
calibration point and its range.

3. Press S and T keys together, to return to the
measurement mode.

NOTE: This setup mode will only show the calibration point for the selected
measuring range. If there is no calibration don e in the selected range, the display
will show ‘---‘.

SETUP

HOLD

SETUP

12.88

CAL

CAL

mS

5

6.9 Viewing the Electrode Data

The COND 500 transmitter lets you check the electrode’s parameters for diagnostic
purposes. This option shows you the current effective cell constant and it s range.
The cell constant is adjusted according to your calibration.

From the measurement mode,

1. Press the ENT key to enter the setup mode. Use
the ▲ or ▼ keys to scroll till LCD displays ‘ELE’
in the upper display.

2. Press the ENT key to enter the electrode data
viewing page. The display will show the current
effective cell constant and its range.

3. Press S and T keys together, to return to the
measurement mode.

SETUP

HOLD

SETUP

K=

1.000

ELE

6

6.10 Reset Function

The reset function lets you choose to either reset the

SETUP

HOLD

transmitter’s conductivity calibration only or conductivity
calibration plus all setup functions that you might have
changed back to factory default settings. However, the
temperature compensation setting, as in Section 6.2, will
remain unchanged.

From the measurement mode,

1. Press the ENT key to enter the setup mode. Use

SETUP

HOLD

the ▲ or ▼ keys to scroll till LCD displays ‘r St’ in
the upper display.

2. Press the ENT key to enter the reset page. Use
the ▲ or ▼ keys to toggle between ‘CAL’ and
‘FCT’ for reset type selection.

• CAL – reset conductivity calibration only

SETUP

HOLD

• FCT – reset conductivity calibration and all

setup functions back to factory default

3. Press the ENT key to confirm your selection.
The lower display will blink momentarily before returning to the reset
function setup mode.

4. Press S and T keys together, to return to the measurement mode.

CAL

FC

7 FACTORY DEFAULT SETTINGS

SETUP

PAGE

Selection of effective conductivity range

SET rng

SET °C

SET HLd

SET org

SET tPr

SET CEL Selecting the various cell constant K = 1.0

SET Lnr Setting the line resistance value 0.00

CAL Viewing current calibration point --- ; r3
ELE Viewing electrode’s current cell constant K = 1.000; r3

rSt

Setting low zooming selection
Setting high zooming selection

Selection of Automatic or Manual
Temperature Compensation

Selection of HOLD current to be of 22 mA or
the last current output value

Selecting Out of Range current output to be
constant 3.8 mA or 4mA for under range
and 20 mA for over range

Setting Temperature Coefficient
Setting Normalization Temperature

Selection of calibration reset or factory
default reset

FUNCTION

DEFAULT

SETTING

1999 uS, r3

0 uS, Lo

1999 uS, Hi

AtC On

HLd OFF

org OFF

2.1%

25.0 °C

rSt CAL; rSt FCt

8 TROUBLE SHOOTING GUIDE

Problem Cause Solution
Power on but

no display

Unstable
conductivity
readings

Oscillating
temperature
readings

Slow response a). Dirty / Oily probe. a). Clean probe.
Blinking ATC

Blinking
electrode
indicator

Or
(Conductivity)

Or / Ur
(Temperature)

a). Loose connections
b). Cables not in correct

polarity (+ and – position).

a). Air bubbles in probe.
b). Dirty probe.
c). Probe not deep enough in

sample.

a). Electrical noise
interference

a) No temperature sensor
connection during ATC mode

a) Error in calibration

a) Conductivity
measurement value is above
the specified range

b) Temperature value
exceeds above/ below the
specified range.

a). Ensure cables are making
good contact.

b). Re-wire loop cables with
correct polarity.

a). Tap probe to remove
bubbles.

b). Clean probe and recalibrate.
c). Ensure that sample entirely

covers the probe sensors.
a) Ensure shield wire is properly

connected to pin 7

a) Ensure temperature sensing
cable are making good contact

a) Ensure calibration standard
solution is not contaminated.
Ensure clean probe is used.

a) Ensure correct conductivity
measurement range is selected.

b) Ensure temperature
calibration is done properly.
Ensure process temperature is
within the specified range.

9 SPECIFICATIONS

Cell Constant
(K)

0.1, 1.0

0.1, 1.0, 10.0

0.1, 1.0, 10.0

0.1, 1.0, 10.0

0.1, 1.0, 10.0

1.0, 10.0

Conductivity Range
(r1 to r6)
Range 1 = 0 – 19.99 uS/cm
Range 2 = 0 – 199.9 uS/cm
Range 3 = 0 – 1999 uS/cm
Range 4 = 0 – 10.00 mS/cm
Range 5 = 0 – 19.99 mS/cm
Range 6 = 0 – 199.9 mS/cm

Resolution

0.01 uS

0.1uS
1 uS

0.01 mS

0.01 mS

0.1 mS

Temperature Range 0-100 oC
Temperature Resolution 0.1 oC
Temperature Relative Accuracy
Temperature Compensation

Temperature Coefficient Factor Setting 0 to 10%
Normalization Temperature Setting 25.0 oC or 20.0 oC
Number of calibration points 1
Output 4.0 to 20.0 mA (Galvanically Isolated)
Over- / Under range current output

(Only applicable in the uS range)

HOLD current output ‘ON’ Select - 22 mA

Display Custom Dual LCD
Averaging/Stability (READY indicator) Yes
Operating Temperature 0 to 100 oC
Power Requirements 12 to 24 VDC
Load Resistance Max. 600 Ω
Dimension / Weight 96 x 96 x 66 mm / 210 g

o

C

± 0.5
Auto (Pt 100) (from 0 to 100 °C)
Manual (from 0 to 100 °C)

‘ON’ Select - 3.8 mA
‘OFF’ Select - 4 mA (under-range) & 20 mA

(over-range)

‘OFF’ Select - Last measured current value

10 ACCESSORIES

Replacement Unit

Product Description

Alpha COND 500 2-Wire Conductivity
Transmitter

Thermo Scientific

Code No.

TSCONCTP0500 ECCONCTP0500

Assembly Accessories

Product Description Order Code

Conductivity cell, Epoxy body, Graphite sensor, w/3-wire
Pt100, k = 0.1

Conductivity cell, Epoxy body, Graphite sensor, w/3-wire
Pt100, k = 1.0

Conductivity 2 Cell type probe, up to 20μS; Cell constant,
K=0.01 with integrated Pt 100, Material SS316 and 25ft
cable (open-ended)

Conductivity 2 Cell type probe, up to 20μS; Cell constant,
K=0.01 with integrated Pt 100, Material Titanium and 25ft
cable (open-ended)

Conductivity 2 Cell type probe, 0.1 - 200μS; Cell
constant, K=0.1 with integrated Pt 100, Material SS316
and 25ft cable (open-ended)

Conductivity 2 Cell type probe, up to 200 mS; Cell
constant, K=1.0 with integrated Pt 100, Material SS316
and 25ft cable (open-ended)

NOTE: Please contact your authorised distributor or dealer for the prices of
extension measuring cables and other accessories like tee joints, electrode
assembly, and calibration solutions.

Eutech

Code Code No.

ECCONSEN89X

ECCONSEN88X

EC-CS10-0-01S

EC-CS10-0-01T

EC-CS10-0-1S

EC-CS10-1-0S

11 WARRANTY

This transmitter is supplied with a one-year warrant y against significant deviations
in material and workmanship from date of purchase and a six-month warranty for
probe. Each instrument will have a warranty card with a specific ser ial nu mber. T he
warranty card must be endorsed by the Authorized Distributor at the point of sale.

If repair or adjustment is necessary and has not been the result of ab use or misuse
within the designated period, please return – freight pre-paid – and c orrection will
be made without charge. Thermo Scientific will determine if the product problem is
due to deviations or customer misuse.

Out of warranty products will be repaired on a charged basis.

Exclusions

The warranty on your instrument shall not apply to defects resulting from:

• Improper or inadequate maintenance by customer

• Unauthorized modification or misuse

• Operation outside of the environment specifications of the products

12 RETURN OF ITEMS

Authorization must be obtained from our Customer Service Department or
authorized distributor before returning items for any reason. A “Return Goods
Authorization” (RGA) form is available through our authorized distributor. Please
include data regarding the reason the items are to be returned. For your protection,
items must be carefully packed to prevent damage in shipm ent and insured against
possible damage or loss. Thermo Scientific will not be responsible for damage
resulting from careless or insufficient packing. A restocking charge will be ma de on
all unauthorized returns.

NOTE: Thermo Scientific reserves the right to make improvements in design,
construction, and appearance of products without notice.

Water Analysis Instruments

North America

166 Cummings Center
Beverly, MA 01915 USA
Toll Free: 1-800-225-1480
Tel: [phone]
Dom. Fax: [phone]
Int’l Fax: [phone]

Europe

P.O. Box 254, 3860 AG Nijkerk
Wallerstraat 125K, 3862 CN Nijkerk,
Netherlands
Tel: [phone]
Fax: [phone]

Asia Pacific

Blk 55, Ayer Rajah Crescent
#04-16/24, Singapore 139949
Tel: [phone]
Fax: [phone]

www.thermo.com/process

© 2009 Thermo Fisher Scientific Inc.

All rights reserved. Thermo Fisher Scientific Inc.

68X216867 Rev 4