EUTECH INSTRUMENTS ALPHA COND 200 - REV 3 User manual

Instruction Manual
Alpha COND 200
1/8 DIN Conductivity Controller Transmitter
μS / mS / ºC
68X276103 |Rev.3 |Apr 2008

PREFACE
This manual serves to explain the use of the Alpha COND 200
controller/transmitter. This manual functions in two ways: firstly as a step-by-step
guide to help you operate the meter; secondly as a handy reference guide.
This manual is written to cover as many anticipated applications of the Alpha
COND 200 controller/transmitter as possible. If there are doubts in the use of the
Alpha COND 200 controller/transmitter, do not hesitate to contact your nearest
αlpha Authorized Distributor.
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
Thermo Scientific.
Thermo Scientific cannot accept any responsibility for damage or malfunction to
the unit caused by improper use of the instrument.
Copyright©2003 All rights reserved.

TABLE OF CONTENTS
1INTRODUCTION 1
2SAFETY INFORMATION 2
3OVERVIEW 3
3.1 FRONT PANEL 3
3.2 BACK PANEL 4
3.3 WIRING 5
3.4 PANEL-MOUNTING THE CONTROLLER 6
3.5 INSTALLING SPLIT FERRITE CLAMPING 7
MEASUREMENT MODE 8
4PASSWORD 9
5CONDUCTIVITY CALIBRATION 11
6TEMPERATURE CALIBRATION 13
7SETUP MODE 14
7.1 GENERAL INFORMATION 14
7.2 SETUP MODE OVERVIEW 15
7.3 SET POINT 1–P1.0 16
7.4 SET POINT 2–P2.0 18
7.5 MEASUREMENT RANGE SELECTION –P3.0 20
7.6 CONFIGURE TEMPERATURE SETTINGS –P4.0 21
7.7 VIEWING CONDUCTIVITY CALIBRATION DATA –P5.0 22
7.8 VIEWING CONDUCTIVITY/TEMPERATURE ELECTRODE DATA –P6.0 23
7.9 CONTROLLER RESET –P7.0 24
8RELAYS 25
9TRANSMITTER FUNCTION 25
10 SPECIFICATIONS 26
11 ACCESSORIES 27
12 GENERAL INFORMATION 30

1
1INTRODUCTION
Thank you for purchasing a Alpha COND 200 ⅛DIN Conductivity Controller. This
controller is part of a series of quality process controllers available from Eutech
Instruments. These sturdy, economical conductivity controllers are designed with
the features and reliability of a much more expensive instrument.
Your controller includes:
•Removable terminal blocks for easy connections;
•Two mounting brackets for easy panel mounting;
Some features of this controller are:
•Two set point, two SPDT relay operation
•Scrolling, 14-segment LED guides user easily through setup functions
•Reliable power supply from 85 to 260 V AC, 50/60 Hz or DC withstands
voltage fluctuations
•Push-button operation from the front panel
•Single-point calibration for each individual range
•Adjustable hysteresis band prevents rapid contact switching around set-point
•Selectable automatic or manual temperature compensation
•Two-level password protection
•Removable terminal strips for quick and easy connections
•Built-in memory backup retains setup even if power fails, and lets you
configure unit before installation
•Isolated 4-20 mA output for remote monitoring or hard copy recording

2
2SAFETY INFORMATION
The Eutech Controller/Transmitter shall be installed and operated only in the
manner specified in the Instruction manual. Only skilled, trained or authorized
person should carry out installation, setup and operation of the instrument.
Before powering up the unit, make sure that power source it is connected to, is as
specified in the top label. Failure to do so may result in a permanent damage to the
unit.
The unit has live and exposed parts inside. If it has to be opened, make sure that
the power to the unit is off and disconnected.
The unit is Fuse protected. In the event the fuse has to be replaced, use only those
as specified in the manual.
The degree of protection against electric shock will be achieved only by
observance of the corresponding installation rules.

3
3OVERVIEW
3.1 Front Panel
The front panel consists of a 4-digit LED display, 8 LED annunciators and 4 keys.
Annunciators
1. REL 1 Displayed when Relay 1 is activated
2. REL 2 Displayed when Relay 2 is activated
3. MEAS Displayed in measurement mode
4. CAL Displayed in calibration mode
5. SETUP Displayed in setup mode
6. µS Displayed when measurement range in micro-Siemens / cm
7. oC Unit of the displayed parameter (temperature)
8. mS Displayed when measurement range in milli-Siemens / cm
Keys
9. MODE Toggle between Conductivity and temperature display
10. ENTER Confirm changes or to enter into further levels of sub-menu
11. ▲(increment) Use during calibration and setup modes to increment values.
Press ▲/▼keys together to escape to Measurement mode
11. ▼(decrement) Use during calibration and setup modes to decrease values.
Press ▲/▼keys together to escape to Measurement mode
12. LED Display 14 segment LED display
8.8.8.8.

4
3.2 Back Panel
The back panel consists of three different connectors that can be used with
removable terminal blocks (included):
12 11 10 9
1820 1921
8
17
7
16
6
15
35
14
24
13
SENSE
PT100
RELAY2
NC NC N L
-4-20mA
+4-20mA
RELAY1
Caution
IN
GND
+CON
-CON
NC
NC
1
1. VAC live wire
2. VAC neutral wire
3. unused
4. unused
5. Relay 2 deactivated position (normally closed)
6. Relay 2 center pole
7. Relay 2 activated position (normally open)
8. Relay 1 deactivated position (normally closed)
9. Relay 1 center pole
10. Relay 1 activated position (normally open)
11. 4-20 mA connection, negative
12. 4-20 mA connection, positive
13. Pt 100 connection: sense (jumper to terminal 14 if using 2-wire RTD)
14. Pt 100 connection: input
15. Pt 100 connection: ground
16. Conductivity positive terminal
17. Conductivity negative terminal
18. unused
19. unused
20. VAC protective ground wire
21. VAC protective ground wire

5
3.3 Wiring
Caution: Ensure electrical mains are disconnected before proceeding.
1. Connect the power supply to the three-pin terminal block
•VAC live wire = 1
•VAC neutral wire = 2
•VAC protective ground wire = 20 OR 21
Alpha COND 200 controller accepts voltages from 85 to 260 VAC, 50/60 Hz or DC.
2. Connect the Pt 100 leads to terminals 13 to 15 of the seven-pin terminal block.
Either wire can be connected to either terminal. Terminals 13 and 14 must be
shunted unless using a 3-wire RTD.
NOTE: CON 200 is factory set for Automatic temperature compensation. MTC can
be selected in Program P4.0.
3. Power on the controller. The display automatically shows the Conductivity
reading, the µS and ‘MEAS’ annunciators lights.
NOTE: In the event Pt 100 is not connected or the connection is broken in the ATC
mode, the display flashes ‘OR’ to alert you.

6
3.4 Panel-mounting the controller
The supplied mounting hardware allows surface mounting to all panels and
protective enclosures. Mounting cut-out size is 91 x 45 mm.
To attach the mounting to the controller:
1. Align the catch to the side of the controller, and insert threaded rods through
catch.
2. Screw the threaded-rod through the catch in a clock-wise direction. Tighten
until the catch holds the controller firmly against the back of the panel or
protective housing. Repeat on the other side.
SIDE VIEW
TOP VIEW
approx.154.20
approx.
100
Wallp
a
Catch
Threade
d
Catch
Threadedrod

7
3.5 Installing Split Ferrite Clamping
The power cable (L, N & E) need to be connected to the instrument with two turns
through Split Ferrite (Wurth Electronika) clamp which is supplied as an accessory
with the instrument.

8
MEASUREMENT MODE
Press MODE to toggle between:
•Conductivity measurement mode and
•Temperature measurement mode
Conductivity Measurement Mode
The controller displays the selected Conductivity range number, R X (X ranges
from 1 to 8), for 2 seconds before displaying the Conductivity measurement.
Conductivity Range Range No., R Resolution Cell Constant
0.00 – 20.00 µS/cm 1 0.01 µS/cm 0.1
0.0 – 200.0 µS/cm 2 0.1 µS/cm 0.1
0.0 – 200.0 µS/cm 3 0.1 µS/cm 1
0 – 2000 µS/cm 4 1 µS/cm 1
0.00 – 10.00 mS/cm 5 0.01 mS/cm 1
0.00 – 20.00 mS/cm 6 0.01 mS/cm 1
0.0 – 200.0 mS/cm 7 0.1 mS/cm 1
0.0 – 200.0 mS/cm 8 0.1 mS/cm 10
Temperature Measurement mode
Press MODE key once to view the temperature measurement. The display shows
ATC (Automatic Temperature Compensation) or MTC (Manual Temperature
Compensation), then the current measured temperature (for ATC) or the set
temperature (for MTC). The oC annunciator lights when you are measuring
temperature.
NOTE: After pressing the MODE key to display Temperature, if there is no further
key-press, the Controller will automatically revert to Conductivity Measurement
mode after about 30 seconds.
See Setup program P4.0 for further instructions.

9
4PASSWORD
To access Calibration and Setup functions, you need to enter a password code.
You cannot change calibration and setup parameters unless you first enter the
password.
The Alpha COND 200 controller features two separate passwords:
•Conductivity and Temperature calibration mode password = 011
•Setup program password = 022
To enter the password:
1. Press ENTER twice. The display reads “P.000”. The first “0” flashes.
2. Press ENTER again to leave the first digit “0” and to scroll to the next
number.
3. Press the ▲or ▼keys to change the second digit to the correct number (1
or 2). Press ENTER.
4. Press the ▲or ▼keys to change the second digit to the correct number (1
or 2). Press ENTER.
If you enter an incorrect digit, press MODE to back up.
5. Press ENTER again. You are now in Calibration mode or Setup mode,
depending on password entered.
Note: In the Password Entry mode, if there is no key-press for more than 30
seconds, Controller will automatically revert to measurement mode.

10
P
.
P
.
000
P.
000
P
.01 0
P.020
P.0 11
P.022

11
5CONDUCTIVITY CALIBRATION
IMPORTANT: When Calibration mode is entered, controller automatically goes into
a “HOLD” mode where the 4-20 mA output freezes and relays are de-activated (if it
was in an activated condition). Upon return to measurement mode, both 4-20mA
output and relay activities resume, depending on settings.
The Alpha COND 200 controller includes 8 conductivity measurement ranges.
One-point slope calibration is possible, in each range.
Choose fresh standard solutions, whose value is reasonably close to the
measurement value.
Before calibration, make sure electrode is clean. Use iso-propyl alcohol followed by
thorough rinsing in distilled water to clean electrode.
Important: To achieve a successful conductivity calibration, two conditions must
be satisfied:
1. Difference between measured value of standard solution, and actual
value of standard solution, must be within ± 40 %.
(e.g. if value of standard solution is 1413 uS/cm, then allowable
measured values by controller must be within 1978.2 uS/cm {+ 40%}
and 847.8 uS/cm {- 40%}); and
2. the lowest possible value must be at least 10% of full scale
(e.g. if range of 0 to 200.0 uS/cm selected, min. measured value at
calibration, must be at least 20.0 uS/cm).
If any or both conditions are not satisfied, controller will display ERR 1 (blinking).
1. Key in the password “011” using the method described in Section 5.
2. Controller displays the value of the standard solution.
3. Use electrode to agitate standard solution to obtain a homogeneous solution
and to dislodge any bubbles. Allow electrode time to stabilize with solution
temperature.
4. Use ▲/ ▼keys to adjust displayed readings to the value of the standard
solution. Press ENTER.
5. If any of the two conditions mentioned above is not satisfied, controller will
display ERR1, blinking.
6. If calibration is successful, Controller displays DONE, blinking. Press
ENTER to revert to Conductivity measurement mode (Relays and 4-20 mA
output resume previous settings).
NOTE: To clear the ERR1 display and return to calibration mode, press ▲/ ▼
keys together.

12
509
500
done
ENTER
ENTER
Notes:
You can view the calibrated Conductivity value from Setup program. See Setup
program P5.0.
Controller displays calibrated conductivity point for selected range.
If calibration is not done for the selected range, controller displays ‘- - - -‘.
If after thorough cleaning of electrode and ERR1 is displayed after an attempted
calibration, consider changing electrode.

13
6TEMPERATURE CALIBRATION
IMPORTANT: When Calibration mode is entered, controller automatically goes into
a “HOLD” mode where the 4-20 mA output freezes and relays are de-activated (if it
was in an activated condition). Upon return to measurement mode, both 4-20mA
output and relay activities resume, depending on settings.
This controller features selectable Automatic Temperature Compensation (ATC) or
Manual Temperature Compensation (MTC).
ATC: ATC mode requires a Pt 100 temperature element. ATC automatically
compensates for temperature fluctuations. ATC temperature readings can be offset
by ±10 oC.
Important: If there is no temperature element wired to controller and ATC is
selected on, screen will flash in conductivity mode, and an error message (OR) is
displayed in temperature mode.
MTC: MTC lets you select a specific value at which temperature will be
compensated. You can select a manual temperature value from 0 to 50oC. Factory
default is 25.0oC.
See Setup program P4.0 for instructions on ATC or MTC selection.
To offset temperature:
1. Press MODE to select oC mode. Display shows MTC or ATC, then
temperature.
2. Key in password “011” as per procedure in Section 5.
3. The screen will flash current oC reading.
4. For ATC: Determine temperature of solution with an accurate meter (such as
the Temp 5). Press ▲or ▼keys to offset oC value on controller display to
match value of the solution you are measuring.
For MTC: Press ▲or ▼keys to offset oC value on controller display to
match desired value.
5. Press ENTER. The display flashes “DONE” for about 3 seconds and returns
to measurement mode.

14
2
2
.5
2
5.0
d
o
n
e
ENTER
7SETUP MODE
7.1 General Information
IMPORTANT: When Setup mode is entered, controller automatically goes into a
“HOLD” mode where the 4-20 mA output freezes and relays are de-activated (if it
was in an activated condition). Upon return to measurement mode, both 4-20mA
output and relay activities resume, depending on settings.
To enter setup mode:
1. Key in password “022” using method described in section 5.
2. Press ▲or ▼keys to display various sub-menus shown here.
3. When a sub-menu item is displayed, press ENTER key to enter that sub-
menu.
4. Press ▲and ▼keys together (ESCAPE) to leave Setup mode and return to
Measurement mode (Relays and 4-20 mA output resume previous settings).
P
1
.0
P3. 0
P
4.
0
P5.0
P6.0
P2.0 P7.0

15
7.2 Setup mode overview
P1.0: Set Point 1
P1.1: select relay 1 set point value
P1.2: select relay 1 as low or high set point
P1.3: set relay 1 hysteresis value
P2.0: Set Point 2
P2.1: select relay 2 set point value
P2.2: select relay 2 as low or high set point
P2.3: set relay 2 hysteresis value
P3.0: Range
P3.1: select measurement range (with the corresponding cell constant value).
Eight measurement ranges are available.
P4.0: Temperature Data
P4.1: select ATC or MTC
P4.2: select temperature coefficient value
P4.3: select normalization temperature
P5.0: Calibration Conductivity Buffer points
P5.1: view conductivity value at which calibration was performed
P6.0 Electrode Properties
P6.1: view cell constant value after calibration
P6.2: view temperature offset value after calibration (only if in ATC mode)
P7.0 Reset
P7.1: select yes/no to reset controller to factory defaults

16
7.3 Set Point 1 – P1.0
Setup program P1.0 allows you to set parameters for relay 1.
P1.1: select relay 1 set point value
P1.2: select relay 1 as low or high set point
P1.3: set relay 1 hysteresis value (dead band)
P
1
.
0
P1.1 P1. 2 P1.3
SP 1SP 1SP 1
200 LOW
HIGH
1
00
HYS
t
Press ▲and ▼keys together (ESCAPE) at anytime, to leave Setup mode and
return to Measurement mode.
P1.1: Select relay set point value
Set the Conductivity value that will activate Relay 1. If measured value overshoots
or undershoots Set Point value, Relay 1 will be activated and corresponding LED
on front panel will light.
1. Key in password “022” as per procedure in Section 5.
2. Screen will scroll P1.0 and SP1. Press ENTER.
3. Screen will scroll P1.1, SP1, then current set point value.
4. Press ▲or ▼keys and adjust first relay set point. Default value is 10% of
full scale of range selected.
5. Press ENTER to confirm and continue to step three of P1.2, or press ▲and
▼keys together to return to P1.0. Press ▲and ▼keys together again, to
return to the Conductivity measurement mode.
P1.2: Set relay as high or low set point
Select low set point to activate Relay when measured value undershoots Set point;
select high set point to activate Relay when measured value overshoots Set point.
Using both SP1 and SP2, you can select lo/lo, lo/hi, hi/lo or hi/hi set points.
1. Key in password “022” as per procedure in Section 5.
2. The screen will scroll P1.0 and SP1. Press ENTER twice.
3. The screen will scroll P1.2, SP1, and LOW (or HIGH).
4. Use ▲or ▼keys to toggle between LOW and HIGH.
5. Press ENTER to confirm and continue to step 3 of P1.3, or press ▲and
▼keys together to return to P1.0. Press ▲and ▼keys together again, to
return to Conductivity measurement mode.