ABB 4623 Manuale utente
4600 Series Operating Instructions
Models 4623 and 4628
Conductivity Transmitters
To Meet United States
Pharmacopœia (USP 23)
Regulations
4600
µS/cm 25°C
0 .50
A1
A2
4600
0 . 50
A1
A2
µS/cm 25°C
0255
ABB AUTOMATION
The Company
ABB Automation is 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 technology and
unrivalled service and support.
The quality, accuracy and performance of 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 ABB Automation’s dedication to quality
and accuracy.
Use of Instructions
Warning.
An instruction that draws attention to the risk of injury or
death.
Caution.
An instruction that draws attention to the risk of damage to
the product, process or surroundings.
✶
Note.
Clarification of an instruction or additional information.
Information.
Further reference for more detailed information or
technical details.
Although Warning hazards are related to personal injury, and Caution hazards are associated with equipment or property damage,
it must be understood that operation of damaged equipment could, under certain operational conditions, result in degraded
process system performance leading to personal injury or death. Therefore, comply fully with all Warning and Caution notices.
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
Marketing Communications Department, ABB Automation.
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.
BS EN ISO 9001
St Neots, U.K. – Cert. No. Q5907
Stonehouse, U.K. – Cert. No. FM 21106
EN 29001 (ISO 9001)
Lenno, Italy – Cert. No. 9/90A
Stonehouse, U.K.
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CONTENTS
Section Page
1 INTRODUCTION .......................................................... 2
2 PREPARATION ............................................................ 2
2.1 Checking the Code Number .............................. 2
2.1.1 Wall-/Pipe-mounted Instruments ......... 2
2.1.2 Panel-mounted Instruments ................ 2
2.1.3 Conductivity Cells ................................ 3
3 MECHANICAL INSTALLATION .................................. 4
3.1 Siting Requirements .......................................... 4
3.1.1 Instruments .......................................... 4
3.1.2 Conductivity Cells ................................ 4
3.2 Mounting ............................................................ 5
3.2.1 Wall-/Pipe-mounted Instruments ......... 5
3.2.2 Panel-mounted Instruments ................ 6
3.3 Cleaning Conductivity Cells .............................. 7
3.3.1 Stainless Steel Conductivity Cells ....... 7
3.4 Installing the Conductivity Cells ........................ 7
3.4.1 Bulkhead Socket .................................. 7
3.4.2 Model 2278 Cell Dimensions ............... 7
4 ELECTRICAL CONNECTIONS ................................... 8
4.1 Access to Terminals .......................................... 8
4.1.1 Wall-/Pipe-mounted Instruments ......... 8
4.1.2 Panel-mounted Instruments ................ 8
4.2 Connections, General ....................................... 9
4.2.1 Relay Contact Protection
and Interference Suppression ............. 9
4.3 Wall-/Pipe-mounted
Instrument Connections .................................. 10
4.4 Panel-mounted
Instrument Connections .................................. 11
4.5 Selecting the Mains Voltage ............................ 12
4.5.1 Wall-/Pipe-mounted Instruments ....... 12
4.5.2 Panel-mounted Instruments .............. 12
4.6 Conductivity Cell and Bulkhead
Socket Connections ........................................ 13
Section Page
5 CONTROLS AND DISPLAYS .................................... 14
5.1 Displays ........................................................... 14
5.2 Control Familiarisation .................................... 14
6 OPERATION ............................................................... 15
6.1 Instrument Start-up ......................................... 15
6.2 Operating Page ............................................... 15
7 PROGRAMMING........................................................ 16
7.1 Access to Secure Parameters ........................ 17
7.2 Language Page ............................................... 17
7.3 Set Up Parameters Page ................................ 17
7.4 Set Up Alarms Page ........................................ 18
7.5 Set Up Retransmission Page .......................... 20
8 CALIBRATION ........................................................... 22
8.1 Equipment Required ....................................... 22
8.2 Preparation ...................................................... 22
8.3 Factory Settings Page ..................................... 23
9 SIMPLE FAULT FINDING .......................................... 25
9.1 Error Messages ............................................... 25
9.2 No Response to Conductivity Changes .......... 25
9.3 Checking the Temperature Input ..................... 25
10 SPECIFICATION ........................................................ 26
APPENDICES ..................................................................... 27
A1 Automatic Temperature Compensation .......... 27
2
The 4623 and 4628 conductivity transmitters and associated
measuring cells have been designed to meet United States
Pharmacopœia (USP 23) requirements for continuous
monitoring and control of the conductivity of demineralised
water, and de-ionised water.
The 4623 model is a wall-mounted instrument and the 4628
model a panel-mounted, DIN sized instrument. Both
instruments have a single programmable conductivity input
channel and a single temperature input channel. When
making temperature compensated measurements the sample
temperature is sensed by a Pt100 resistance thermometer
mounted in the measuring cell or, alternatively, using a
separate temperature sensor.
Instrument operation and programming is via four tactile
membrane keys located on the front panel. Programmed
functions are protected from unauthorised alteration by a five-
digit security code.
2.1 Checking the Code Number
2.1.1 Wall-/Pipe-mounted Instruments – Fig. 2.1
(Wall-Mounted Model)
4623/500
2.1.2 Panel-mounted Instruments – Fig. 2.2
Slide instrument
out of case
(Panel-Mounted Model)
4628/500
Undo captive
screw
Remove plug
(if fitted)
1
2
3
Fig. 1.1 System Schematic
4600
µS/cm 25°C
0.50
A1
A2
4600
0.50
A1
A2
µS/cm 25°C
1 INTRODUCTION 2 PREPARATION
Fig. 2.1 Checking the Code Number (Model 4623)
Fig. 2.2 Checking the Code Number (Model 4628)
3
2.1.3 Conductivity Cells – Fig. 2.3
Model 2278/305
Basic Type No. Version Constant (K) Process
Connection
Type
Temperature
Compensation
Code Characters
1, 2 3, 4, 5 6 7 8
22 Electrolytic
conductivity
measuring
cells
0 2in. Tri-clover
Hygienic fitting
0 None
5 Pt100
resistance
thermometer
78/ Stainless steel 3 0.05
2 PREPARATION
Fig. 2.3 Checking the Conductivity Cell Code Number
4
3.1 Siting Requirements
3.1.1 Instruments – Fig. 3.1
Caution.
• Mount in a location free from excessive vibration.
• Mount away from harmful vapours and/or dripping fluids.
Information. It is preferable to mount the
instrument at eye level, allowing an unrestricted view of
the front panel displays and controls
3.1.2 Conductivity Cells – Fig. 3.2
Caution. Ensure that the integral cable (where
applicable) does not hang against hot or abrasive objects
when the plug is connected to the bulkhead socket.
✶
Note. Allow sufficient clearance for easy removal of
cell for cleaning – see Section 3.4 for overall dimensions
of cells.
Conductivity
Cell
IP66
C – Within Environmental Limits
55°C
Max.
–20°C
Min.
B – Within Temperature Limits
Maximum Distance
164 ft. (50m) – cell
constant <0.05
A – Maximum Distance of Instrument to Cell
Acid – 6% Concentration
C – Acid/Alkali Concentration Limits
Alkali – 8% Concentration
B – Maximum Pressure Limits
A – Maximum Temperature Limits
Max. Temperature – 230°F (110 °C)
Max. Pressure – 150 p.s.i.
Model 2278
Model 2278
Model 2278
3 MECHANICAL INSTALLATION
Fig. 3.1 Siting Requirements – Instrument Fig. 3.2 Siting Requirements – Conductivity Cell
5
3.2 Mounting
3.2.1 Wall-/Pipe-mounted Instruments – Figs. 3.3 and 3.4
Mark fixing centres
(see Fig. 3.3)
Drill suitable
holes
Fix instrument to
wall using
suitable fixing
1
2
3
Position ‘U’ bolts on pipe
Position plates over ‘U’ bolts
Secure transmitter to mounting plate
Secure plates
1
2
3
4
160 (6.3)
250
(9.84)
69 (2.72)
Fixing Centres
Allowance for
Cable Bends
200 (7.9)
68 (2.68)
214
(8.43)
232
(9.13)
Fixing Centres
42
(1.65)
61 (23/8) O.D. Vertical or Horizontal Post
Dimensions in
mm (in)
3 MECHANICAL INSTALLATION…
Fig. 3.3 Overall Dimensions
Fig. 3.4 Wall-/Pipe-mounting
A – Wall-mounting B – Pipe-mounting
6
…3.2 Mounting
3.2.2 Panel-mounted Instruments – Figs. 3.5 and 3.6
Dimensions in mm (in)
96 (3.78)
96
(3.78)
191 (7.52)
12 (0.47)
Panel Cut-out
+0.8
–0
92
(3.62 )
+0.03
–0
+0.8
–0
92 (3.62 )
+0.03
–0
Cut a hole in the panel (see Fig. 3.5 for dimensions).
Instruments may be close stacked to DIN 43835.
Insert the instrument
into the panel cut-out.
Refit the panel clamps to the case, ensuring that the
panel clamp anchors are located correctly in their slot.
Secure the instrument by tightening
the panel clamp retaining screws.
Loosen the retaining screw
on each panel clamp.
Remove the panel clamp and
anchors from the instrument case.
1
2
3
4
5
6
3
…3 MECHANICAL INSTALLATION
Fig. 3.5 Overall Dimensions
Caution. The clamp must fit flat on the
instrument casing. If the clamp is bowed, the securing
screw is overtight and sealing problems may occur.
Fig. 3.6 Panel Mounting
7
3.3 Cleaning Conductivity Cells
Before installing a conductivity cell, clean the electrodes as
follows.
3.3.1 Stainless Steel Conductivity Cells
Unscrew the outer electrode and thoroughly clean it with a
nylon-bristle brush (supplied) and a warm detergent solution.
Clean the central electrode in a similar manner, taking care not
to damage it. For more tenacious deposits a 2% hydrochloric
acid solution may be used. Rinse thoroughly with distilled
water after cleaning. The electrodes should have a dull,
frosted appearance which must not be removed by polishing
or abrasive cleaning. Refit the outer electrode.
3.4 Installing the Conductivity Cells
Caution. After cleaning and installing a
conductivity cell, ensure it remains filled with liquid and is
not allowed to dry out.
3.4.1 Bulkhead Socket – Fig. 3.7
3.4.2 Model 2278 Cell Dimensions – Fig. 3.8
Dimensions in mm
2 Fixing Holes
5mm dia.
100
Clearance
for removal
of plug
83
89
70
76
M20
Conduit
Gland Entry
Dimensions in mm
22 dia
95
200
Welded
Collar
Gasket
Tri-Clamp
63.550
3 MECHANICAL INSTALLATION
✶
Note. Used with cell types 2278. Mount the
socket at a convenient location close to the cell.
Fig. 3.7 Bulkhead Socket
Fig. 3.8 Model 2278 Cell Dimensions
8
Warning. Before making any connections, ensure that the power supply, any high voltage-operated control circuits
and high common mode voltages are switched off.
4.1 Access to Terminals
4.1.1 Wall-/Pipe-mounted Instruments – Fig. 4.1
4.1.2 Panel-mounted Instruments – Fig. 4.2
Earth Studs
slide
down
Pull out
slightly. . .
. . . and
slide off
Remove
protection
cover
Slacken
captive
screw
3
4
2
1
2
Remove nuts and
protection cover
Remove
mains cover
Mains Cover
1
2
4 ELECTRICAL CONNECTIONS
Fig. 4.1 Access to Terminals – Wall-/Pipe-mounted Instruments
Fig. 4.2 Access to Terminals – Panel-mounted Instruments
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