IM/AC2CO
Issue 4
AC200 Series
Conductivity Cells
ABB has Sales & Customer Support expertise in
over 100 countries worldwide
The Company’s policy is one of continuous product
improvement and the right is reserved to modify the
information contained herein without notice.
Printed in UK (11.04)
© ABB 2004
ABB Limited
Oldends Lane, Stonehouse
Gloucestershire
GL10 3TA
UK
Tel: +44 (0)1453 826661
Fax: +44 (0)1453 829671
ABB Inc.
Analytical Instruments
9716 S. Virginia St., Ste. E
Reno, Nevada 89521
USA
Tel: +1 (0) 775 850 4800
Fax: +1 (0) 775 850 4808
www.abb.com
Warning –
Refer to the manual for instructions
Caution –
Risk of electric shock
Protective earth (gr
ound) terminal
Earth (ground) terminal
Direct curr
ent supply only
Alternating curr
ent supply only
Both direct and alter
nating current supply
The equipment is protected
through double insulation
Health and Safety
To ensure that our products are safe and without risk to health, the following
points must be noted:
1.
The relevant sections of these instructions must be read carefully before
proceeding.
2.
Warning labels on containers and packages must be observed.
3.
Installation, operation, maintenance and servicing must only be carried out by
suitably trained personnel and in accordance with the information given.
4.
Normal safety precautions must be taken to avoid the possibility of an accident
occurring when operating in conditions of high pressure and/or temperature.
5.
Chemicals must be stored away from heat, protected from temperature extremes
and powders kept dry. Normal safe handling procedures must be used.
6.
When disposing of chemicals ensure that no two chemicals are mixed.
Safety advice concerning the use of the equipment described in this manual or
any relevant hazard data sheets (where applicable) may be obtained from the
Company address on the back cover, together with servicing and spares
information.
Customer Support
We provide a comprehensive after sales service via our Worldwide Service Organization.
Contact one of the following offices for details of
your nearest Service and Repair Centre.
United Kingdom
ABB Limited
Tel: +44 (0)1453 826661
Fax: +44 (0)1453 827856
United States of America
ABB Inc.
Tel: +1 (0) 775 850 4800
Fax: +1 (0) 775 850 4808
Client Warranty
Prior to installation, the equipment referred to in this manual must be stored in
a clean, dry environment, in accordance with the Company's published
specification. Periodic checks must be made on the equipment's condition.
In the event of a failure under warranty, the following documentation must be
provided as substantiation:
1.
A listing evidencing process operation and alarm logs at time of failure.
2.
Copies of operating and maintenance records relating to the alleged faulty unit.
Electrical Safety
This instrument complies with the requirements of EN 61010-1:1993 'Safety
Requirements for Electrical Eqluipment for Measurement, Control and Laboratory
Use'. If the instrument is used in a manner NOT specified by the Company, the
protection provided by the instrument may be impaired.
Symbols
One or more of the following symbols may appear on the instrument labelling:
Information in this manual is intended only to assist our customers in the efficient
operation of our equipment. Use of this manual for any other purpose is specifically
prohibited and its contents are not to be reproduced in full or part without prior
approval of the Technical Publications Department.
The Company
We are an established world force in the design and
manufacture of instrumentation for industrial process
control, flow measurement, gas and liquid analysis and
environmental applications.
As a part of ABB, a world leader in process automation
technology. we offer customers application expertise,
service and support worldwide.
We are committed to teamwork, high quality
manufacturing, advanced technolog and unrivalled
service and support.
The quality, accuracy and performance if the
Company's products result from over 100 years
experience, combined with a continuous program of
innovative design and development to incorporate the
latest technology.
The NAMAS Calibration Laboratory No 0255 is just one
of the ten flow calibration plants operated by the
Company and is indicative of our dedication to quality
and accuracy.
BS EN ISO 9001:2000
Cert. No. Q 05907
EN 29001 (ISO 9001)
Lenno, Italy – Cert. No. 9/90A
Stonehouse, U.K.
0255
R
E
GI
ST
ER
E
D
Warning
. Before making any connections, ensure that the power supply, any
high voltage-operated control circuits and high common mode voltages are
switched off.
Note
. For details of connecting the cable to the analyzer, refer to Section 5.2 or
the User Guide for the analyzer.
Terminal Head Connections
Blue
(Temperature
Compensator)
Green
(Cell Electrode)
Black (Earth [Ground]
Electrode) – See Note
Yellow (Temperature
Compensator)
Red
(Temperature
Compensator
Third Lead)
Screen/Shield
Black (Earth [Ground]
Electrode) – see Note
Screen
Yellow (Temperature Compensator)
Green (Cell Electrode)
Blue (Temperature Compensator) and
Red (Temperature Compensator Third Lead)
E
C
T
T
Strip leads
15mm
Wrap lead around
terminal screw
AC211 and AC221 Insertion Cell, Terminal Head Connections
AC212 Flow-through Cell Connections
Note
. The screen is cut back and left
unconnected on earthed (grounded) cells.
5
ELECTRICAL CONNECTIONS
x
1
4
X
A
x
1
4
X
A
x
1
4
X
A
x
1
4
X
A
x
1
4
X
A
E
T
2
8
B
T
E
T
2
8
B
T
E
T
2
8
B
T
E
T
2
8
B
T
E
T
2
8
B
T
0
2
6
4
0
2
6
4
0
2
6
4
0
2
6
4
0
2
6
4
5
2
6
4
5
2
6
4
5
2
6
4
5
2
6
4
5
2
6
4
B
r
o
s
n
e
S
A
r
o
s
n
e
S
e
u
l
B
1
B
9
B
*
5
-
2
B
T
7
6
d
e
R
2
B
0
1
B
*
5
-
2
B
T
6
7
w
o
ll
e
Y
3
B
1
1
B
6
-
2
B
T
5
8
n
e
e
r
c
S
4
B
2
1
B
7
-
2
B
T
1
2
1
n
e
e
r
G
5
B
3
1
B
1
-
2
B
T
3
0
1
k
c
a
l
B
*
*
6
B
*
*
4
1
B
4
-
2
B
T
4
9
Connections to AX41x, TB82 and 4620 Conductivity Transmitters
*
Wires are connected to the same terminal.
**
When connecting non-metal conductivity cells that are isolated from earth
(ground), e.g. mounted in plastic, link the following terminals to the earth
(ground) stud on the analyser case:
• AX41x Terminal B14
• AX411 Terminal B6
• 4620 Terminal 4
• 4620 Terminal 9
Note
. When connecting earthed (grounded) metal conductivity cells, ensure that the
cell earth (ground) and the analyzer earth (ground) are at the same potential.
Caution
. While cleaning, do not wet the electrical connection terminals.
6.1
Cleaning the Measuring Cell
Conductivity cells require periodic cleaning, the frequency of which depends on the
particular application in which they are employed. Although measuring cells are free
of contamination when supplied, they should be cleaned prior to installation.
Caution
. Do not touch the cell bore by hand or use sharp implements when
cleaning the cell.
6.1.1
A210 Series 2-Electrode Carbon Cells
Thoroughly clean the electrode with a 1:1 solution of water and non ionic detergent
using the bottle brush provided. For more tenacious deposits, a 2% hydrochloric
acid solution may be used. After cleaning, rinse the cell several times in distilled water
and then examine it. Looking through the bore towards a source of illumination, the
surface should have an evenly wetted appearance. If the surface has dry patches
where the water has ‘peeled’ away this is an indication of the presence of grease and
repeated cleaning and rinsing is required until the cell bore is wetted evenly.
6.1.2
A220 Series 2-Electrode Stainless Steel Cells
Unscrew the outer electrode. Thoroughly clean the electrode with a 1:1 solution of
water and detergent using the bottle brush provided. For more tenacious deposits,
a 2% hydrochloric acid solution may be used.
After cleaning, rinse the cell thoroughly in distilled water and examine it. With a
source of illumination shining into the electrode system, the interior surface of the
outer electrode and the whole of the central electrode should have an evenly wetted
appearance. If the surfaces have dry patches where the water has ‘peeled’ away this
is an indication of the presence of grease and repeated cleaning and rinsing is
required until the electrodes are evenly wetted. Refit the outer electrode.
6
CLEANING
Installation Guide
IM/AC2CO_4
