ABB 4680 Troubleshooting guide

4600
% OXYGEN
20.9
A1
A2
4600
% OXYGEN
25.0
A1
A2
ABB Instrumentation
Installation & Operating GuideEXFG
Oxygen Analyzer System Models 4680 & 4685
Oxygen Transmitters

ABB KENT-TAYLOR
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. Chemicalsmustbestoredawayfromheat,protectedfromtemperatureextremesandpowderskeptdry.Normalsafehandlingprocedures
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.
✶
Note.
Clarification of an instruction or additional information.
Information.
Further reference for more detailed information or
technical details.
Use of Instructions
Warning.
An instruction that draws attention to the risk of injury or
death.
Caution.
Aninstructionthatdrawsattentiontotheriskofdamageto
the product, process or surroundings.
AlthoughWarning hazardsarerelatedto personalinjury,and Caution hazards areassociatedwith equipmentorproperty 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
Technical Communications Department, ABB Kent-Taylor.
The Company
ABB Kent-Taylor 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(B) is just one of the ten flow calibration plants
operated by the Company, and is indicative of ABB Kent-Taylor’s dedication to quality and
accuracy.
R
E
G
I
S
T
E
R
E
D
F
I
R
M
BS EN ISO 9001
St Neots, U.K. – Cert. No. Q5907
Stonehouse, U.K. – Cert. No. FM 21106
Stonehouse, U.K. – Cert. No. 0255
EN 29001 (ISO 9001)
Lenno, Italy – Cert. No. 9/90A

1
CONTENTS 1 INTRODUCTION
1.1 Documentation
Documentation for the EXFG Oxygen Analyzer System is
shown in Fig. 1.1.
Fig. 1.1 System Documentation
Section ................................................................... Page
1 INTRODUCTION ......................................................... 1
1.1 Documentation ................................................. 1
1.2 System Hardware............................................. 2
1.3 Principle of Operation ...................................... 2
2 PREPARATION ........................................................... 3
2.1 Checking the Instrument Type ......................... 3
2.1.1 Wall-mounted Instruments.................. 3
2.1.2 Panel-mounted Instruments ............... 3
3 MECHANICAL INSTALLATION ................................. 3
3.1 Siting Requirements......................................... 3
3.2 Mounting........................................................... 4
3.2.1 Wall/Pipe-mounted Instruments ......... 4
3.2.2 Panel-mounted Instruments ............... 5
4 ELECTRICAL CONNECTIONS .................................. 6
4.1 Connections – General .................................... 6
4.1.1 Cable and Gland Specifications ......... 6
4.1.2 Relay Contact Protection and
Interference Suppression ................... 7
4.2 Wall-mounted Instrument Connections............ 8
4.3 Panel-mounted Instrument Connections ....... 10
4.4 Selecting the Mains Voltage........................... 12
4.4.1 Wall/Pipe-mounted Instruments ....... 12
4.4.2 Panel-mounted Instruments ............. 12
5 CONTROLS AND DISPLAYS ................................... 13
5.1 Displays .......................................................... 13
5.2 Switch Familiarization .................................... 13
6 OPERATION.............................................................. 14
6.1 Instrument Start-up ........................................ 14
6.2 Operating Page .............................................. 14
6.2.1 Operating Page Error Messages..... 14
7 PROGRAMMING....................................................... 15
7.1 Access to Secure Parameters ....................... 15
7.2 Set Up Outputs Page ..................................... 16
TRANSMITTER
Product Identification
Mechanical Installation
Electrical Connections
Controls & Displays
Operation
Programming
■
■
■
■
■
■Part No.
IM/EXFG–4600
INTERFACE UNIT
Certification
Product Identification
Mechanical Installation
Electrical Installation
Calibration
Fault Finding
■
■
■
■
■
■Part No.
IM/EXFG–INT
PROBE
■
■
■
■
■
■
■Part No.
IM/EXFG–PB
SPECIFICATION SHEET
Full Specification■
Part No.
SS/EXFG
Certification
Product Identification
Mechanical Installation
Electrical Installation
Operation
Calibration
Fault Finding
and
4680
4685

2
…1 INTRODUCTION
1.2 System Hardware – Fig. 1.2
The4680and 4685 transmitters arepartoftheEXFG Oxygen
Analyzer System which measures oxygen content and
temperature within a gas flue.The 4680/500 model is a wall-
mounted instrument and the 4685/500 model is a panel-
mounted, DIN-sized instrument. Signals from either
transmitter can also be retransmitted to remote monitoring
equipment.
Both models have a single programmable input channel and
a single temperature input channel. Instrument operation and
programming is via four tactile membrane switches located
Fig. 1.2 System Schematic
on the front panel. Programmed functions are protected
from unauthorized alteration by a five-digit security code.
1.3 Principle of Operation– Fig. 1.2
The transmitter unit processes a 4 to 20mA (25% to
0.25%O2)signal generated at the Interface Electronics Unit
and displays the oxygen value in O2with selectable ranges
(log or linear). All ranges can be retransmitted.
In addition, the transmitter processes any alarm signals
generated from the Interface Electronics Unit – see the
EXFG Probe Guide and EXFG Interface Electronics Unit
Guide
for additional system operating information.
NON HAZARDOUS AREAHAZARDOUS AREA
(Zone 1, Class IIB)
Process
20°C to
600°C
1.1 Bar
Absolute
Maximum
(40in WG)
EXFG Probe
EEx d IIB T3 (T
amb
–20°C to 55°C)
to EN30014 1993 and EN30018 1995
Mains Supply
Control Thermocouple
Signal 4 to 20mA Output Signal
(25% to 0.25% O
2
)
or
4680 Transmitter
Mains Supply
Flameproof Interface Electronics Unit
EEx d IIB T6 Conforming to BS5501 Part 5: 1977
Flue
4685 Transmitter
Retransmission
Output – see
Section 4
Reference Air Line Entry
Regulated
Reference Air Unit
(003000241)
O2mV Signal
(–20 to +180mV)
or
Logic
Alarm
Signal
1.1 Bar
Absolute Maximum
Dry, Oil-free
Instrument Air
(10 bar max.)
Controlled
Heater
Supply
Over-temperature
Trip Thermocouple
Test Gas
Inlet

3
2.1 Checking the InstrumentType
2.1.1 Wall-mounted Instruments – Fig. 2.1
Fig. 2.1 Checking the Code Number (Model 4680)
Fig. 2.2 Checking the Code Number (Model 4685)
2.1.2 Panel-mounted Instruments – Fig. 2.2
2 PREPARATION 3 MECHANICAL INSTALLATION
Fig. 3.1 Siting Requirements
Slide instrument
out of case
(Panel-mounted
Model)
4685/500
Undo captive screw
Remove plug
(if fitted)
1
3
2
4680/500
(Wall-mounted
Model)
IP66
(NEMA 4x)
C – Within Environmental Limits
B – Within Temperature Limits
3281ft
(1000m) max.
A – Maximum Distance to Interface Unit
55°C
Max.
–20°C
Min.
3.1 Siting Requirements – Fig. 3.1
Caution.
• Mount in a location free from excessive vibration.
• Mount away from harmful vapors 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.

4
3.2 Mounting
3.2.1 Wall/Pipe-mounted Instruments – Figs. 3.2 and 3.3
…3 MECHANICAL INSTALLATION
Fig. 3.3 Mounting
Fig. 3.2 Overall Dimensions
A – Wall-mounting B – Pipe-mounting
Mark fixing centers
(see Fig. 3.2)
Drill suitable holes
Fix instrument to wall
using suitable fixing
Position ‘U’ bolts on pipe
Position plates over ‘U’ bolts
Secure transmitter to mounting plate
Secure plates
1
3
2
3
1
2
4
Dimensions in inches (mm)
6.3 (160)
9.84
(250)
2.72 (69)
Fixing centers
Allowance for
cable bends
7.9
(200)
2.68 (68)
8.43
(214) 9.13
(232)
Fixing centers
1.65
(42)
2.4 (61) O.D. Vertical Post

5
…3.2 Mounting
3.2.2 Panel-mounted Instruments – Figs. 3.4 and 3.5
Fig. 3.5 Panel Mounting
3 MECHANICAL INSTALLATION
Dimensions in inches (mm)
Remove nuts
2
Remove cover
Fit instrument
into panel
Re-fit retaining
clamps and nuts
Re-fit cover
and nuts
Remove nuts
and retaining bars (from
both sides of case)
Shorten clamps if panel
thickness > 0.24in (6mm)
Cut panel hole
(see Fig. 3.4)
1
2
3
4
5
6
7
8
Fig. 3.4 Overall Dimensions
7.52 (191)
0.47 (12)
Panel Cut-out
3.78 (96)
3.78
(96)
3.62 +0.03
–0 +0.8
–0
(92 )
3.62 +0.03
–0
+0.8
–0
(92 )

6
4 ELECTRICAL CONNECTIONS
4.1 Connections – General
Warning.
•Mains power – before making any connections, ensure that the power supply, any high voltage-operated control circuits
and high common mode voltages are switched off.
Information.
•Earthing (grounding) – stud terminal(s) is fitted to the transmitter case for bus-bar earth (ground) connection – see Fig. 4.2 or 4.5.
•Cable routing – always route signal output cable leads and mains-carrying/relay cables separately, ideally in earthed metal
conduit.Twist the signal output leads together or use screened cable with the screen connected to the case earth stud.
Ensure that the cables enter the transmitter through the glands nearest the appropriate screw terminals and are short and
direct. Do not tuck excess cable into the terminal compartment.
•Cableglands&conduit fittings–ensureamoisture-tightfitwhenusingcableglands,conduitfittingsandblankingplugs/bungs
(M20 holes).
•Relays –the relay contacts are voltage-free and must be appropriately connected in series with the power supply and the
alarm/control device which they are to actuate. Ensure that the contact rating is not exceeded. Refer also to Section 4.1.2
for relay contact protection details when the relays are to be used for switching loads.
•Retransmission output – Do not exceed the maximum load specification for the selected current retransmission range
(see the associated Specification sheet).
Because the retransmission output is isolated the –ve terminal must be connected to earth (ground) if connecting to the
isolated input of another device.
4.1.1 Cable and Gland Specifications
Caution.
•Cabling – connections between theTransmitter and the Interface Electronics Unit must be in accordance with BS5345 pt3
– Installation and Maintenance Requirements for Electrical Apparatus with type 'd' Protection Flameproof Enclosure.
•Glands – EEx d glands used on the Interface Electronics Unit must be of the EEx d 'Barrier Gland' type with BASEEFA
certification because the enclosure is over 2 liters volume, has a source of ignition within and is designed for use in Zone
1 areas (reference BS5345 part 3.
Information.
• The M20 glands ready-fitted to wall-mounted instruments accept cable of between 4 and 7mm diameter.
• A spare set of grommets is supplied for cable sizes between 8 and 12mm diameter.
Signal Cable
Mains Power Cable 4685
4680
or
Table 4.1 Cable and Gland Specifications (electrical requirements only)
Gland Specification
4680 4685
M20 Uncertified No gland
(fitted) required
4680 4685
M20 Uncertified No gland
(fitted) required
Cable Specifications
Signal cable 16/0.2, 4-core copper, overall screened,
(not supplied) flameproof (two pairs)
Max. loop resistance 750Ω
Mains power cable 3-core, 0.5mm2copper (min.)
(not supplied)
Gland Specification
M20 BASEEFA certified
EEx d barrier gland
(not supplied)
M20 BASEEFA certified
EEx d barrier gland
(not supplied)

7
4 ELECTRICAL CONNECTIONS…
4.1.2 Relay Contact Protection and Interference Suppression – Fig. 4.1
If the relays are used to switch loads on and off, the relay contacts can become eroded due to arcing.Arcing also generates radio
frequency interference (RFI) which can result in instrument malfunctions and incorrect readings.To minimize the effects of RFI,
arc suppression components are required; resistor/capacitor networks for a.c.applications or diodes for d.c.applications.These
components can be connected either across the load or directly across the relay contacts. On 4600 Series instruments the RFI
components must be fitted to the relay terminal block along with the supply and load wires – see Fig 4.1
For a.c. applications the value of the resistor/capacitor network depends on the load current and inductance that is switched.
Initially, fit a 100R/0.022µF RC suppressor unit (part no.B9303) as shown in Fig. 4.1A. If the instrument malfunctions (incorrect
readings) or resets (display shows 88888) the value of the RC network is too low for suppression an alternative value must be
used. If the correct value cannot be obtained, contact the manufacturer of the switched device for details on the RC unit required.
For d.c. applications fit a diode as shown in Fig. 4.1B. For general applications use a 1N5406 type (600V peak inverse voltage
at 3A – part no. B7363).
✶
Note. For reliable switching the minimum voltage must be greater than 12V and the minimum current greater than 100mA
Fig. 4.1 Relay Contact Protection
A – A.C. Applications B – D.C. Applications
NC C NO
External
D.C. Supply +–
Relay Contacts
Load
Diode
NC C NO
External
A.C. Supply LN
Relay Contacts
C
R
Load

8
…4 ELECTRICAL CONNECTIONS
4.2 Wall-mounted Instrument Connections – Figs. 4.2 and 4.3
Caution. Slacken terminal screws fully before making connections.
Earth Studs
Slide
down
Pull out
slightly. . .
. . . and
slide off
Remove
protection
cover
Slacken
captive
screw
1
3
2
4
2
Fig. 4.2 Access to Terminals – Wall-mounted Instruments

9
4 ELECTRICAL CONNECTIONS…
Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of
the effects of radio frequency interference (RFI) and correct operation of the power supply interference filter.
Fig. 4.3 Wall-mounted Instrument Connections
…4.2 Wall-mounted Instrument Connections – Figs. 4.2 and 4.3
Channel 1 Channel 2 Power
Supply
Retransmission
Output Relay 1
Relay 2
Serial
RS422/
RS485
Channel
1Channel 2Power
Supply
Retrans. Relay 1
Relay 2
12 34 567 +– N L
Serial
(If fitted)
123
456
123
456
1
2
3
4— —
+
–
5
6
7
—
—
—
Logic
temperature
input (alarm
from Interface
Electronics
Unit)
1
2
3
4
5
6
—
—
—
—
—
—
Rx+
Rx–
Tx+
Tx–
0V
+
–Retrans.
Output 1
2
3
4
5
6
—
—
—
—
—
—
NC
C
NO
NC
C
NO
Relay 1
Relay 2
N
L— —Neutral Line
—Earth
Earth Stud (on case)
– see Fig. 4.2
NC
C
NO
Normally Closed
Common
Normally Open
=
=
=
Sleeved Links
Cell retransmission
input (output
from Interface
Electronics Unit)
Rx
Tx Receive Transmit
=
=

10
…4 ELECTRICAL CONNECTIONS
4.3 Panel-mounted Instrument Connections – Figs. 4.4 and 4.5
Caution. Slacken terminal screws fully before making connections.
Remove nuts and
protection cover
Remove mains cover
Mains cover
1
2
Fig. 4.4 Access toTerminals – Panel-mounted Instruments

11
4 ELECTRICAL CONNECTIONS…
…4.3 Panel-mounted Instrument Connections – Figs. 4.4 and 4.5
Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of
theeffects of radiofrequencyinterference(RFI) and correctoperationof the powersupplyinterferencefilter.Connect
the earth lead directly to the case earth stud and not to the 'E' terminal.
Fig. 4.5 Panel-mounted Instrument Connections
+
–
Normally Closed
Common
Normally Open
Normally Closed
Common
Normally Open
Neutral
Live
Earth
Relay 1
Relay 2
1
2
3
4
5
6
7
8
9
E
N
L
1
2
3
4
5
6
7
8
9
10
11
12
Mains Supply
Retransmission
Output 0V
Rx–
Rx+
Tx–
Tx+
–
+
RS422/RS485 Serial Interface
(If fitted)
Earth Stud (on case)
TBA TBB
Earth Stud
1
2
3
4
5
6
7
8
9
E
N
L
1
2
3
4
5
6
7
8
9
10
11
12
Channel 2 – Logic temperature alarm
from Interface Electronics Unit
Channel 1 – Retransmission input
(output from Interface Electronics Unit)
Sleeved Links

12
4.4 Selecting the Mains Voltage
4.4.1 Wall/Pipe-mounted Instruments – Fig. 4.6
Fig. 4.7 Selecting the Mains Voltage – Panel-mounted Instruments
4.4.2 Panel-mounted Instruments – Fig. 4.7
Fig. 4.6 Selecting the Mains Voltage – Wall/Pipe-mounted Instruments
Information. Use a small,
flat-bladed screwdriver to remove
the screw cap from the case.
…4 ELECTRICAL CONNECTIONS
Remove cover (see Fig. 4.2)
Slacken captive screws
and remove protection
cover
Remove front panel screws
Remove front panel
240V A.C.
110V A.C.
Remove cap and screw
1
2
3
4
5
3
5
240V A.C.
110V A.C.
Undo captive screw
Slide instrument
out of case
1
3
24

13
5.1 Displays – Fig. 5.1
The display comprises a 5-digit, 7-segment digital upper
display line and a 16-character dot-matrix lower display line.
The upper display line shows actual values of oxygen, alarm
set points or programmable parameters.The lower display line
shows the associated units or programming information.
5 CONTROLS AND DISPLAYS
Fig. 5.1 Location of Controls and Displays
5.2 Switch Familiarization
Fig. 5.2 Membrane Switch Functions
A – Advancing to Next Page
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Page 1 Parameter 1
Parameter 2
Parameter 3
Page 2
Advance to
next page
For majority
of parameters
or
B – Moving Between Parameters
C – Adjusting and Storing a Parameter Value
New value is
automatically stored
Parameter Value Adjust
D – Selecting and Storing a Parameter Choice
Parameter X
Y
ZSelect
Parameter 1
Parameter 2
Parameter 3
Page X
Parameter 4
Advance to
next parameter
or
New value is
automatically stored
or
5 CONTROLS AND DISPLAYS
% Oxygen
Alarm
L.E.D.'s
Upper
Display Line
Lower
Display Line
Membrane Switches
20.0

14
6 OPERATION
6.1 Instrument Start-up
Ensure all electrical connections have been made correctly and switch on.
6.2 Operating Page
The Operating Page is a general use page in which parameters are viewed only and cannot be altered. To alter or program a
parameter refer to the programming pages in Section 7.
XX.X
% Oxygen
Alarm Setpoint
OXYGEN CAL. SEQ.
-----
XX.X
% Oxygen
The upper display indicated the measured oxygen value. If over or under
temperature is monitored, the upper display shows '– – – – –' and an error
message is displayed on the lower dot matrix display – see Table 6.1.
Alarm Set Point
The upper display indicates the alarm set point, displayed as % oxygen. The
set point value and the relay/l.e.d. action can be programmed in the Set Up
Outputs Page – see Section 7.2.
Advance to Oxygen Calibration Sequence page.
Note. Electricalcalibrationis carried outpriorto despatch andshouldnot
be altered.However, if inaccurate or inconsistent readings are obtained, refer
to the Electrical Calibration Supplement for full calibration procedures.
6.2.1 Operating Page Error Messages
The following error messages only appear in the Operating Page (when an error has been detected), in place of the % oxygen frame.
✶
Note. Relay 2 is assigned as a malfunction alarm and de-energizes when an error condition is present. The l.e.d.
assigned to this relay is illuminated when in an error condition.
Error Message Possible Cause
NV MEMORY ERROR The contents of the non-volatile memory have not been read correctly during power up. To rectify the fault,
switch off, wait 10 seconds and switch on again. If the fault persists contact the Manufacturer.
CELL UNDER TEMP. Thetemperature at theprobesensor has notreacheda sufficienttemperatureto obtain suitablereadings(less
than 670°C at the control thermocouple).
OVER TEMP. TRIP The temperature at the probe sensor has exceeded the maximum permissible temperature (greater than
750°C) and has now switched the power to the heater off. Refer to EXFG Interface Electronics Unit Guide and
EXFG Probe Guide.
The Interface Electronics Unit is switched off or mains power to the Interface Electronics Unit has failed.
OUT OF LIMITS The measured % oxygen value is outside the limits of the instrument. (The upper display flashes if outside the
limits of 0.25% to 25%).
Table 6.1 Error Messages

15
7 PROGRAMMING
xx.x
% Oxygen
Alarm Setpoint
00000
SECURITY CO E
-----
SET UP OUTPUTS
5.0
Alarm Setpoint
-----
Alarm Action EB
-----
RTX Type 4-20
-----
LOG Output Yes
25.00
Retrans. Span
0.25
Retrans. Zero
0.0
Test Retrans (%)
00000
Alter Sec. Code
xx.x
0-20
No
EA
ELECTRICAL CAL
mA Zero (4mA)
mA Span (20mA)
Res. Zero (2K0)
Calibrate YES
Res.Span (10K0)
Adjust RTX Span
Adjust RTX Zero
-----
xxxxx
xxxxx
xxxxx
xxxxx
-----
-----
NO
-----
Secure Parameters
S
ect
i
on
6
.
2
,
P
age
14 S
ect
i
on 7.
1
,
P
age
1
5
S
ect
i
on 7.
2
,
P
age
16
Operating Parameters
0-10
Fig. 7.1 Overall Programming Chart
7.1 Access to Secure Parameters
7 PROGRAMMING…
Security Code
Enter the required code number, between 00000 and 19999, to gain access to the
secure parameters. If an incorrect value is entered, subsequent programming pages
cannot be accessed.
Advance to Set Up Outputs page.
00000
SECURITY CO E
-----
SET UP OUTPUTS

16
…7 PROGRAMMING
7.2 Set Up Outputs Page
Set Up Outputs
Page header
Alarm Action
Set the required alarm action from the following table.
The set point band is defined as the actual value of the set point plus or minus
the hysteresis value. The hysteresis value is fixed at 0.1% oxygen. Alarm
action occurs if the input value is above or below the set point band. If the input
moves within the set point band the last alarm action is maintained.
Alarm Set Point
The alarm set point can be set to any value within the oxygen range of 0.3% to
25.0%.
Retransmission Type
The retransmission output is assigned to the oxygen range.
Select the retransmission output current range required (4 to 20mA, 0 to 20mA
or 0 to 10mA).
LOG Output
The retransmission can be assigned to give a logarithmic or linear output.
Select YES for Logarithmic, NO for Linear.
Retransmission Span
Select the required retransmission span value, in % oxygen units, from 5.25%
to 25.00%.
Retransmission Zero
Select the required retransmission zero value, in % oxygen units, from 0.25%
to 20.00%.
Test Retransmission
The instrument automatically transmits a test signal of 0, 25, 50, 75 and 100%
of the retransmission range selected above. The % test signal selected is
shown on the upper display.
Example: for a selected range of 0 to 20mA and 50% retransmission test
signal, 10mA is transmitted.
Alter Security Code
Set the security code to a value between 00000 and 199999.
Advance to Electrical Calibration page.
Note. Electrical calibration is carried out prior to despatch and should
not be altered. However, if inaccurate or inconsistent readings are obtained,
refer to the Electrical Calibration Supplement for full calibration procedures.
Alarm
Action
LED Action
for input
Above Set
Point
LED Action
for input
Below Set
Point
LED Action
for input
Above Set
Point
LED Action
for input
Above Set
Point
EA ON OFF OFF ON
EA OFF ON ON OFF
-----
SET UP OUTPUTS
5.0
Alarm Setpoint
-----
Alarm Action EB
EA
-----
RTX Type 4-20
0-20
0-10
-----
LOG Output Yes
No
25.00
Retrans. Span
0.25
Retrans. Zero
0.0
Test Retrans (%)
00000
Alter Sec. Code
-----
Electrical Cal

PRODUCTS & CUSTOMER SUPPORT
A Comprehensive Instrumentation Range
Analytical Instrumentation
• Transmitters
On-line pH, conductivity, and dissolved oxygen
transmitters and associated sensing systems.
• Sensors
pH, redox, selective ion, conductivity and dissolved
oxygen.
• Laboratory Instrumentation
pH and dissolved oxygen meters and associated
sensors.
• Water Analyzers
For water quality monitoring in environmental, power
generation and general industrial applications including:
pH, conductivity, ammonia, nitrate, phosphate, silica,
sodium, chloride, fluoride, dissolved oxygen and
hydrazine.
• Gas Analyzers
Zirconia, katharometers, hydrogen purity and purge-gas
monitors, thermal conductivity.
Controllers & Recorders
• Controllers
Digital display, electronic, pneumatic. Discrete single-
loop and multi-loop controllers which can be linked to a
common display station, process computer or personal
computer.
• Recorders
Circular and strip-chart types (single and multi-point) for
temperature, pressure, flow and many other process
measurements.
Electronic Transmitters
• Smart & Analog Transmitters
For draft, differential, gauge and absolute pressure
measurement. Also, liquid level and temperature
• I to P Converters and Field Indicators
Flow Metering
• Magnetic Flowmeters
Electromagnetic,insertion typeprobesand watermeters.
• Turbine Flowmeters
• Wedge Flow Elements
• Mass Flow Meters
Transmitters, sensors, controllers and batch/display
units.
Level Control
• Submersible, Capacitance & Conductivity.
Pneumatic Instrumentation
• Transmitters
• Indicating Controllers
• Recording Controllers
Customer Support
ABB Kent-Taylor provides a comprehensive after sales
service via a Worldwide Service Organization. Contact one of
the following offices for details on your nearest Service and
Repair Centre.
United Kingdom
ABB Kent-Taylor Limited
Tel: [phone]
Fax: [phone]
United States of America
ABB Kent-Taylor Inc.
Tel: [phone]
Fax: [phone]
Italy
ABB Kent-Taylor SpA
Tel: [phone]
Fax: [phone]
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.

The Company's policy is one of continuous product
improvement and the right is reserved to modify the
information contained herein without notice.
© February 1996 ABB Printed in U.K.
ABB Kent-Taylor Ltd.
St. Neots,
Cambs.
England, PE19 3EU
Tel: [phone]
Fax: [phone]
IM/EXFG-4600 Issue 2
ABB Kent-Taylor Inc.
PO Box 20550, Rochester
New York 14602-0550
USA
Tel: [phone]
Fax: [phone]
ABB Kent-Taylor SpA
22016 Lenno
Como
Italy
Tel: [phone]
Fax: [phone]