ABB AP10X/1 User manual

—
ABB MEASUREMENT & ANALYTICS | INSTRUCTION MANUAL | IM/AP100 REV. D
AP100 series
pH/redox (ORP) cartridge sensors with water-wash option
Measurement made easy
For more information
A Data Sheet is also available for free download
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Data Sheet
AP100
pH/Redox (ORP) cartridge sensors
with water-wash option
DS/AP100-EN
—
AP100 series
pH/redox (ORP)
cartridge sensors

Electrical safety
This equipment complies with the requirements of CEI/IEC
61010-1:2001-2 ‘Safety Requirements for Electrical Equipment
for Measurement, Control and Laboratory Use’. If the
equipment is used in a manner NOT specified by the Company,
the protection provided by the equipment may be impaired.
Symbols
One or more of the following symbols may appear on the
equipment labelling:
Warning – refer to the manual for instructions
Caution – risk of electric shock
Protective earth (ground) terminal
Earth (ground) terminal
Direct current supply only
Alternating current supply
Both direct and alternating current supply
The equipment is protected through double
insulation
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.
Health and safety
To ensure that our products are safe and without risk to health,
the following points must be noted:
• The relevant sections of these instructions must be read
carefully before proceeding.
•Warning labels on containers and packages must be
observed.
•Installation, operation, maintenance and servicing must
only be carried out by suitably trained personnel and in
accordance with the information given.
• Normal safety precautions must be taken to avoid the
possibility of an accident occurring when operating in
conditions of high pressure and/or temperature.
• Chemicals must be stored away from heat, protected from
temperature extremes and powders kept dry. Normal safe
handling procedures must be used.
• 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.

1
CONTENTS
1 INTRODUCTION ............................................................. 2
1.1 Purpose ............................................................... 2
1.2 Cartridges and Cartridge Systems ...................... 2
2 INSTALLATION............................................................... 4
2.1 Typical Installation ............................................... 4
2.2 Water Supply for Water Wash Systems .............. 5
2.3 Preparing the Electrode Cartridge....................... 6
2.4 Installing the Electrode Cartridge ........................ 6
2.4.1 In-line pH Systems .................................. 6
2.4.2 Submersible Systems (pH and Redox) ... 7
2.4.3 Dip Systems (pH and Redox).................. 8
2.4.4 Cable Termination ................................... 9
3 CALIBRATION ................................................................ 9
4 MAINTENANCE ............................................................ 10
4.1 General Cleaning .............................................. 10
4.2 Liquid Junction and Electrolyte Level ................ 10
4.2.1 Replacing Liquid Junction ..................... 10
4.2.2 Checking Electrolyte Level .................... 10
4.3 Storage of the Electrode.................................... 10
5 SPARES ........................................................................ 11

2
1 INTRODUCTION
1.1 Purpose – Figs. 1.1 and 1.2
This instruction manual describes the installation and
maintenance of the AP100 Series Industrial pH and Redox
(ORP) Electrode Cartridge Systems.
A – Electrode In-line System C – Offset Ported Flowcell System
1.2 Cartridges and Cartridge Systems
Fig. 1.1 shows schematic layouts for in-line and dip systems.
Fig. 1.2 shows unit dimensions and identifies cartridge system
installations.
epyTegdirtraC 101PAdehcatedelbaC,tenoyaB
201PAdehcattaelbaC,tenoyaB
301PAdehcatedelbac,ni-wercS
401PAelbisrembuS
sepyTrosneS 1/X01PA001ot0,ssalgdradnatS °Hp41ot0,C
2/X01PA001ot0,ssalgdradnatS °hsaWretaWsulpHp41ot0,C
3/X01PA07ot0,ssalgecnatsiserwoL °Hp11ot0,C
4/X01PA07ot0,ssalgecnatsiserwoL °hsaWretaWsulpHp11ot0,C
5/X01PA)PRO(xodeR
6/X01PAhsaWretaWsulp)PRO(xodeR
Fig. 1.1 System Schematics
Support Chain
Mains in
Current Output
Relays
Relays
Current Output
Mains in Mains in
Current Output
Relays Mains in
Current Output
Relays
Relays
Current Output
Mains in
Tube not supplied.
Water
Wash
from
Solenoid
Valve
D –Submersible System E –Typical Water Wash System
B –Electrode Dip System

3
…1 INTRODUCTION
Fig. 1.2 Overall Dimension in mm (in)
Ø 48 (1.875)
200 (7.875)
See note
176 (7)
86 (3.375)
See note
Ø 48
(1.875)
75 (3)
102 (4)
Note.Allow an additional 130 (5.125) for connectors
and cartridge removal.
1
/
2
" BSPT
Female Thread
1" BSP or 1" NPT
Female Thread
AP101/2/3 –In-Line Flow System
Dimension A
(Overall Length)
Ø 63 (2.5)
Dimension A
7674 – 1060 (41.75)
7675 – 2060 (81.10)
7676 – 3060 (120.50)
AP103 –Dip System
Cable
Anchor point for
additional support
(light chain or
flexible cable)
Ø 48 (1.875)
176
(6.92)
101
(3.97)
Ø 27.9
(1.10)
AP104 –Submersible System
IN
OUT
3/8" NPT
Male Stud
Couplings
(not supplied)
40 (1.57) 62 (2.44)
115 (4.53)
216 (8.50)
Ø 65 (2.56)
AP101/2 –Offset Port In-Line System

4
2 INSTALLATION
2.1 Typical Installation
A typical installation is shown in Fig. 2.1, with offset ported
flowcell arrangements illustrated in Fig. 2.3. A recommended
installation for samples which may have entrained air or are
subject to intermittent flow is shown in Fig. 2.2.
Fig. 2.3 Installation of Offset Ported Flowcell Assembly
IN
OUT
3
/ 8 in NPT
Male Stud Couplings
(not supplied)
Clamp (Optional)
Recommended clamps
(not supplied)
Fig. 2.1 Typical Installation
To ensure that the cartridge
is always in solution.
To prevent spillage
when cartridge is
removed.
Sample Flow
Drain
Fig. 2.2 Recommended Installation for Samples with Entrained Air or Intermittent Flow
To prevent spillage when
cartridge is removed.
B
Approximately 15°
Vent
A
Point B must be lower than point A
to ensure that the cartridge is always
in solution. Drain

5
Install a suitable solenoid valve to
the mains water supply feed.
Connect a suitable length of 1/4in. i.d. p.v.c. tube to the outlet of the
solenoid valve. This tube terminates at the electrode installation point. Push the quick-fit
connector supplied, onto
the free end of the tube.
Note that the quick-fit
connector incorporates a
cut-off valve.
To water supply – see
Important Note and
Caution, above.
Suitable Solenoid Valve (user supplied)
2
1
3
2 INSTALLATION…
Fig. 2.5 Location ofWater Wash Nozzle
Sensor
Water Wash
Nozzle
Liquid
Junction
Note. It is advisable to use a suitable
hose clamp.
Fig. 2.4 Installing the Water WashWater Supply
2.2 Water Supply forWaterWash Systems –Fig. 2.4
and 2.5
Important Note. Installation must only be carried out in
accordance with the local water authority and council
bylaws.
Caution. The maximum water pressure at the electrode
should not exceed 4 bar. At NO time should the sample
pressure be allowed to exceed that of the water wash
water supply.Fit a non return valve if this possibility exists.
Information. As all quick-fit connectors used in Water
Wash systems incorporate cutoff valves, tubes may
subsequently be disconnected on operational equipment
without sample loss or water wash discharge.
Note. For optimum performance of the Water Wash
functioninflow systems,thesamplepressureshouldbeat
least 2 bars lower than that of the water wash water
supply.
Thewater supply for the waterwash system mustcome froma
suitable supply via a solenoid valve.The general specification
for the solenoid valve is:
Brass body: 2/2, NC
Orifice size: 3.0 / 4.0 mm
Port size: 1/8" – 1/4" BSP
Pressure: 0 to 6 bar
Coil: 110/115 V a.c. or 230/240 V a.c.50/60 Hz
Before fitting the electrode cartridge system, install the water
supply as shown in Fig. 2.3.
Note. See Fig. 2.4 for recommended tubing.

6
Fit cartridge –
see Section 2.4.
5
6Calibrate –
see Section 3.
3Rinse with
demineralised
water.
Unwind adhesive tape.
Pull off
protective
cap.
12
Shake gently
to dislodge air
bubbles.
4
2.3 Preparing the Electrode Cartridge –Fig. 2.6
Important Note.Beforepreparing the electrodecartridge,
read through Section 2.4 to become familiar with the
appropriate installation procedure.
The procedure in Fig. 2.6A is appropriate for both pH and
redox (ORP) electrode cartridges. The cartridge is supplied
with a protective cap filled with a 7 pH buffer solution and
should not require pre-conditioning; it is ready for immediate
use.
…2 INSTALLATION
2.4 Installing the Electrode Cartridge –Fig. 2.6
Caution
• Ensure an‘O’ring is fitted to seal each cable connector.
• Tighten each plug to ensure a good seal. It is vital that
the terminations are kept dry at all times.
• Ensure the cable is fed through the dip system tube
before the cable is connected.To avoid the risk of damp/
corrosive air damaging the cable plugs, connect to the
electrodes as soon as possible.
2.4.1 In-line pH Systems
a) Fit the flow cell into the pipeline observing all safety
precautions. Fit isolating valves where necessary to
enable safe access to the sensor for maintenance
purposes.
b) Ensure that all connections are tight.
c) Connectthetagged end ofthecabletothe 4600 SeriespH/
Redox meter – see Fig. 2.7 and Table 2.1.
Grey
Blue
Red White
Measuring
Electrode
Reference
Temp.
Comp.
Measuring
Electrode
Reference
Grey
Co-ax Inner
Co-ax Inner
A –pH Systems
B –Redox (ORP) Systems
Black
Fig. 2.7 CableTermination –4600Transmitters
Fig 2.6 Removing the Protective Cap
Note. Retain protective cap and tape for future use.

7
2 INSTALLATION…
elbaCmetsyS 40364653
gnirusaeM edortcelE )xaocforenni( 211
ecnerefeR )kcalb( 49
.pmoC.pmeT )der( 67
.pmoC.pmeT )etihw( 58
.pmoC.pmeT )der( 76
Table 2.1 Series 4600 Connection Equivalents
d) For cable detached versions
Fit the cable connector plugs to the matching colour
sockets – blue to blue, red to red, as appropriate. See Fig.
2.8 inset for tightening and releasing the connector plug.
e) Calibrate (pH only) – see Section 3.
f) For water wash versions
Snap on the water feed pipe from the solenoid valve – see
Fig. 2.9, and visually check water cleaning action by
switching on the water wash option on the 4600
transmitter. There should be a vigorous jet of water
sprayed across the glass membrane (pH), or platinum
(redox) .
g) Ensure that all pipeline connections are securely fitted.
Apply PTFE tape to the threads of the 1" NPT cartridges to
effect a water tight seal, and check that the ‘O’ ring and
sealing area are clean on bayonet cartridge versions.
h) Fittheelectrodecartridgetotheflowcell(screworbayonet
action) – see Fig.1.2.Avoid excessive twisting of the cable
on screw-type cartridges by disconnecting the cable from
the electrode before screwing it into the flow cell.
Fit connector plug on completion.
2.4.2 Submersible Systems (pH and Redox)
a) Connect the tagged end of the cable to the 4600 Series pH
transmitter – see Fig. 2.8 and Table 2.1.
Note. It is strongly recommended that a supporting chain
is attached to the anchor point to remove any strain on the
signal cable.
b) Calibrate (pH only)– see Section 3.
c) Immerse electrode into the solution to be measured.
1
Push on firmly
to connect.
To release, press
the metal catch
and the connector
is ejected.
2Quick-fit
Connector
Tube to
solenoid
valve
Fig. 2.9Water Wash System –Quick-fit Connection
Fig. 2.8 CableTermination –Electrode Connections
Red Measuring Electrode
Blue Temperature Compensator
Red Electrode
Push
down
firmly
One full turn
clockwise
to tighten
To Connect To Disconnect
One full turn
counter
clockwise to
slacken Pull
Off
2
1
1
2
A –pH Electrode Cable Termionation
B –Redox (ORP) Cable Termionation

8
2.4.3 Dip Systems (pH and Redox) –Fig. 2.10
…2 INSTALLATION
Fig. 2.10 Dip System Assembly
e. Push the end cap 6 into the dip tube firmly,
tighten the gland nut
! , and connect the cable
to the 4600 Series pH/redox transmitter (see
Fig. 2.8 and Table 2.1).
f. If a water wash system is fitted:
i) snap the quick-fit connector protruding from
the bottom of the dip tube, onto the cartridge
connector
£ . Also, snap on the water feed
pipe
7 from the solenoid valve onto the
connector at the top of the dip tube.
ii) Visually check the water cleaning action by
switching on the water wash option on the
4600 transmitter. There should be a vigorous
jet of water sprayed across or onto the glass
or platinum.
iii) Also ensure that no leaks occur at the tube
connectors as they could cause damage to
the system.
g. Push the adaptor
4 into the end of the dip
tube
0 firmly to ensure a good seal.
h. Calibrate (pH only) – see Section 3.
a. Pull out the 'O' ring sealed end cap
6 from the dip
tube (If water wash has been ordered, there will be a
water wash tube connected to the connector insert @
in the cap.
b. Pull out the 'O' ring sealed adaptor 4 from the other
end of the dip tube, and using PTFE tape on the
threads of the cartridge, screw the cartridge
1 fully
into the adaptor 4 .
Caution. It is essential that PTFE tape is used around
the thread on the cartridge to ensure a watertight seal.
c. Fit the cable connector plug(s)
3 to the matching
colour electrode socket(s) – blue to blue, red to red,
as appropriate – see Fig. 2.7A for pH and Fig. 2.7B
for Redox. See Fig. 2.7 inset for tightening and releasing
the connector plug(s).
d. Loosen the gland nut
! in the end cap 6 , and after
feeding the water wash tube (if fitted) down the dip
tube, thread the other end of the cable through the
dip tube and end cap cable gland
5 .
Electrode Cable to
Transmitter
Water Wash Feed Pipe
from Solenoid valve
7
12
6
11
5
2
9
8
13
1
4
3
10
Note. The Water Wash delivery tube 9is
supplied fitted to the connector insert @. The
tube also has hose clamps at both ends.