ABB ZGP2 Series User manual

AnalyzeIT
High Temperature Zirconia Oxygen Probe
ZGP2 Series
Operating Instructions
IM/ZGP2_8

ABB
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 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 UKAS 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.
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 the
Marketing Communications Department.
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.
EN ISO 9001:2000
Cert. No. Q 05907
R
E
G
I
S
T
E
R
E
D
EN 29001 (ISO 9001)
Lenno, Italy – Cert. No. 9/90A
0255
Stonehouse, U.K.

1
CONTENTS 1 INTRODUCTION
Section Page
1 INTRODUCTION .............................................................. 1
2 PREPARATION ................................................................ 2
2.1 Unpacking ............................................................... 2
2.2 Checking the Code Number .................................... 2
2.3 Assembling the Probe ............................................. 2
3 INSTALLATION ................................................................ 4
3.1 Types of Measuring Systems .................................. 4
3.2 Siting ....................................................................... 6
3.3 Mounting .................................................................. 8
4 CONNECTIONS ............................................................... 9
4.1 Access to Electrical Connections ............................ 9
4.2 Cable Details ........................................................... 9
4.3 Electrical Connections ............................................. 9
4.4 Reference Air Connections ...................................... 9
4.5 Test Gas Inlet .......................................................... 9
5 OPERATION .................................................................. 10
5.1 Principles of Operation .......................................... 10
5.2 Range of Operation ............................................... 10
6 MAINTENANCE ............................................................. 10
7 FAULT FINDING ............................................................ 11
7.1 In Situ Checking Using a Test Gas ........................ 11
7.1.1 Standard Head ......................................... 11
7.1.2 Twin Gland C95 Head .............................. 11
7.2 Comparison with Another O2 Probe ...................... 11
7.3 Returning the Probe to the
Factory for Checking ............................................. 11
7.4 Continuity Check ................................................... 11
8 SPECIFICATION ............................................................ 12
The ZGP2 Zirconia Oxygen Probe is designed to measure
oxygen in oxidising, and some reducing, furnace atmospheres.
When used in conjunction with an appropriate electronics unit
the probe output voltage may be converted to a signal related
either to oxygen concentration, or oxidising potential, terms i.e.
%O2, ppmO2, kilocalories or millivolts.
Concentration terms are usually applicable to measurements in
oxidising atmospheres and potential terms are used for reducing
atmospheres.
Atmospheres which are strongly reduced, and which may have
free carbon present, are best monitored using the Z-CS2 Carbon
Sensor Probe.
The probe provides a true measurement of the atmospheric
conditions in situ and permits continuous and accurate
measurement over a wide temperature range without frequent
maintenance associated with external sampling systems. It also
eliminates ‘equilibrium shift’, common to other systems in which
gas samples are cooled before measurement, and has a fast
response to changes in atmosphere, enabling rapid corrective
action to be taken when necessary.
The probe comprises a ceramic detector cell housed in a
protective sheath. A thermocouple is fitted within the probe to
enable the process temperature to be monitored or for automatic
temperature compensation to be provided – see Section 5.1.
The sheath material is either aluminous porcelain (recommended
for oxidising atmospheres) or Incoloy 800 (recommended for
reducing atmospheres) for use at maximum temperatures of
1250°C (2282°F) and 1000°C (1832°F) respectively. Special
sheaths are available for use up to 1400°C (2552°F).Aconnector
head (protected to IP54 or IP56) facilitates connection of the
cell output, thermocouple and reference air connections.
A calibration gas inlet port is provided to enable the probe to be
checked using test gas mixtures without removing it from the
process.
Reference air, at a volume of 500 to 1000 ml/min. (1 to 2 ft3/hr),
is required for accurate operation. This can be supplied from a
mains-powered pump unit (Part No. 003000240) or a flow
regulator unit (Part No. 003000241), full details of which are
included in the Operating Instructions: Zirconia Reference Air
Supply Units – Part No. 003000239, Issue 1 onwards.
The ZGP2 probe can be operated with any of the following
instrumentation supplied by the Company, full details of which
are included in their respective Operating Instructions:
Z-MT Oxygen Analyzer – IM/ZMT, Issue 5 or later
ZDT Oxygen Analyzer (Low Temp. Version) – IM/ZDT/FG,
Issue 4 or later
ZDT Oxygen Analyzer (High Temp. Version) – IM/ZDT/GP,
Issue 3 or later
COMMANDER SR100A Advanced Process Recorder
– IM/SR100APAK.
COMMANDER SR100B Multipoint Chart Recorder
– IM/SR100BPAK.

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2 PREPARATION
2.1 Unpacking
Warning. The probe contains refractory ceramic
fibres. Inhalation of fibre or dust particles should be
avoided. If the probe is dismantled or damaged in service,
the materials of construction are NOT classified as
Hazardous Waste and may be disposed of at tipping sites
for Industrial waste.
Caution. The probe is very fragile. Unpack and
handle with care.
Each probe is despatched with its components individually
placed within a common pack. Retain this pack to facilitate
return of the probe to the manufacturer if necessary. Remove
the probe from its packing as follows:
a) Place the polystyrene pack, top uppermost, on a flat
surface and cut the tapes holding the two halves together.
b) Carefully lift the top half of the pack, to gain access to the
probe components which are individually located within the
bottom half.
c) When removing the components from the pack take great
care to support the terminal head and not to twist or bend
the electrode assembly attached to it.
d) Re-assemble the packing for future use.
✶
Note. If for any reason a non-standard sheath is
fitted adjust the diameter of the wadding at the end of the
probe to allow a snug fit.
To reduce its diameter the wadding may be compressed
slightly.
To increase its diameter, apply slight end pressure on the
wire bonding at both ends of the wadding. Mould the
wadding by hand to ensure a light push fit into the sheath.
2.2 Checking the Code Number
Ensure that the correct equipment is being installed –check
the code number on the probe against Table 2.1 below. Code
number labels are fitted inside the probe head.
2.3 Assembling the Probe – Fig. 2.1
Caution. Take care to avoid damage to the probe
when fitting the sheath assembly.
1Drill the fixing flange to suit the local fixing requirements.
2Push the three long countersunk-head screws through the
fixing flange and secure them in position with the three lock
nuts.
3Position the clamp ring over the boss on the probe head,
ensuring correct orientation of the ring’s centre taper.
4Position the sealing ring over the boss, ensuring that it
locates correctly in the centre taper.
5Carefully insert the probe into the ceramic sheath ensuring
that the wadding at the probe end is not damaged and that
the filter washer is in position at the end of the sheath.
6Secure the sheath to the boss with the three cheesehead
screws.
7Slide the fixing flange over the sheath, ensuring that it is
seated over the locating step.
8Locate the clamp ring over the three screws on the flange
2and secure using three nuts. Tighten the nuts down
equally so that the fixing flange is pulled tightly against the
locating step on the sheath and the sealing ring is
compressed until the adjacent faces of the clamp ring and
sheath are 1 to 1.5mm apart. Use a 1mm drill or shim to set
the gap correctly.
Table 2.1 Checking the Code Number

3
Wadding
Filter Washer
Vent
Holes
1 to
1.5 mm
1
3
2
5
6
7
8
8
3
4
5
8
2
2 PREPARATION
Fig. 2.1 Assembling the Probe

4
Power Supply
(required for
pump unit only)
Pump or
regulated
air supply
Power Supply
Reference air
supply
mV Output from
Zirconia Cell
COMMANDER SR100B
3 INSTALLATION
Warning. The probe operates at high
temperatures –take all necessary precautions to avoid
injury through burns.
Caution. Thermal shock may damage the zirconia
cell if the flue is cleaned using a high pressure water hose.
If this method of cleaning is employed, remove the probe
from the flue prior to cleaning. Never use the probe without
the sheath.
3.1 Types of Measuring Systems – Figs. 3.1 to 3.3
When an oxygen concentration measurement is required, i.e.
%O2, ppmO2or O2partial pressure, temperature compensation
of the probe output is usually necessary.
If the process temperature is constant, or if variations in
operating temperature do not produce unacceptable errors, as
in some flue gas measurement, it is possible to measure O2
concentration without temperature compensation using a
system similar to that for oxygen potential.
Systems for two types of measurement are shown in
Figs. 3.1 to 3.3.
In metal heat treatment applications oxygen potential is
normally measured and temperature compensation of the
probe output is therefore not required.
Full installation details for other units are given in their
respective instruction manuals.
Fig. 3.1 Oxygen Potential Measurement using COMMANDER SR100B Multipoint Chart Recorder

5
Thermocouple Output
from Probe
mV Output
from Zirconia Cell
Reference
Air Supply
Power Supply
110/240V 50/60Hz
COMMANDER SR100B
Isolated
Retransmission
Output
Oxygen
Analyzer
Flue Gas
Thermocouple
Reference
Air Supply
Flue
Z-GP2
Probe
Air Thermocouple
mV Output from
Zirconia Cell
Thermocouple
Output from
Probe
Z-MT Oxygen Analyzer
Alarm/Control or
Retransmission Outputs
Alarm/Control
or Retransmission
Outputs
Alarm/Control
Retransmission or
Serial Data Output
Power Supply
Remote Fuel Selector
(dual fuel versions only)
Carbon Monoxide
Monitor
3 INSTALLATION…
Fig. 3.2 Oxygen Concentration Measurement using Basic Oxygen Analyzer
Fig. 3.3 Oxygen Concentration Measurement using Z-MT Oxygen Analyzer

6
69 (2.71)
99
(3.90)
Cable Entry
Reference
Air Line
Entry
Connector Head
102 (4.02)
'A'
Mounting Flange
Probe Outer Sheath
27.5
(1.08)
ZGP2/1: 556 (21.89)
5
(0.2)
ZGP2/2: 953 (37.52)
125
(4.92)
View 'A' on Mounting Flange
Fixing holes to be
drilled by customer
All dimensions in mm (inches)
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009 °C
2561 °F
2561 °F
2561 °F
0001 °C
0531 °C
0041 °*C
2381 °F
2642 °F
2552 °F
…3 INSTALLATION
3.2 Siting –Figs. 3.4 and 3.5
Select the position for the probe avoiding obstructions which
may inhibit insertion or subsequent removal. Dimensions for
the probe are shown in Figs. 3.4 to 3.6. A clearance of at least
25mm in excess of the overall probe length is necessary for
installation or removal procedures.
Caution. The probe MUST NOT be sited:
a) where it is subjected to mechanical or thermal shock.
b) in the presence of aggressive components, e.g.
molten slags, molten silicates, metals and vapours of
lead, zinc, silicon and vanadium.
c) where it is subject to temperatures in excess of those
specified in Table 3.1.
d) where gas components attack the platinum electrode
above 600°C (1112°F), e.g. in atmospheres containing
sufficient concentrations of heavy metals such as
sodium, vanadium, lead, zinc etc.
e) where the connector head temperature can exceed
100°C (212°F).
*Reduced probe cell life may result if probe is operated
continuously above 1250°C (2282°F).
Table 3.1 Temperature Limits
Fig. 3.4 Overall Dimensions –Standard Head

7
88 (3.46)
115
(4.53)
122 (4.80)
'A'
27.5
(1.08)
556 (21.89) or 953 (37.52)
5 (0.2)
125
(4.92)
View 'A' on Mounting Flange
Fixing holes in mounting flange
to be drilled by customer
M16 Cable
Entries x2
Reference
Air Line Entry
Mounting Flange
Probe Outer Sheath
Test Gas
All dimensions in mm (inches)
3 INSTALLATION…
…3.2 Siting –Figs. 3.4 to 3.6
Fig. 3.5 Overall Dimensions –Twin Gland C95 Head
Fig. 3.6 Overall Dimensions –1 in. NPT Adaptor
69.8 (2.74)
View 'A'
'A'
15 (0.59)
Twin Gland Head Shown for Information Only
All dimensions in mm (inches)

8
Packing
Clamp Bolt
Support Tube
and Flange
(min. bore
42.0 mm dia.)
Thermal
Insulation
Fixing
Flange
Furnace
Wall
150mm (5.91 in.)
minimum
Min. 42.0 mm dia.
Thermal Insulation
Furnace
Wall
Soft Ceramic Fibre
Support Tube
10°min.
Thermal
Insulation Support
Tube
Furnace
Wall
Soft
Ceramic
Fibre
…3 INSTALLATION
3.3 Mounting –Figs. 3.7 to 3.9
The probe may be fitted horizontally or, preferably, vertically
for prolonged high temperature operation.
Mount the probe through the furnace wall using the preferred
method shown in Fig. 3.7. Ensure that a sufficiently large hole
is provided through the mounting (min. bore 42mm diameter)
to avoid damage to the probe during insertion or use.
Drill the fixing flange to suit the local fixing requirements before
assembling the probe –see Section 2.3.
Caution. To prevent furnace gas from
contaminating the reference air, always ensure that the
clamp ring, fixing flange and sealing ring are fitted to the
probe as described in Section 2.3.
In applications such as high temperature incinerators, fluid
bed boilers, and ore roasters, where the level of water vapour
in the waste gases to be measured can be extremely high, it is
important that the mounting flange of the probe, including any
stand-off which may be used, is thermally insulated to
minimize condensation within the probe –see Fig. 3.7.
Condensation within the probe sheath, particularly in outdoor
installations, can be sufficient to allow water to come into
contact with the hot ceramic (zirconia) tube leading to thermal
shock and failure of the sensor. This problem is most likely to
occur on such installations where the plant is shut-down
regularly over the week-end. Additionally, take care to protect
the head of the probe from the elements in out-door
installations.
Raising the temperature of the probe as rapidly as possible will
assist in reducing the level of condensation. This is not
possible on some processes where the plant temperature is
gradually raised to the normal operating level. The
temperature rise at the head of the probe can be assisted by
having a large clearance hole in the refractory allowing hot
gases to get up to the mounting flange/stand-off –see Fig. 3.8.
The problems described above are more likely to occur on
horizontal installations. Where it is not possible to mount the
probe in the vertical position, install the probe with a slope of at
least 10 to 15°downwards from the head of the probe –
see Fig. 3.9.
Fig. 3.7 Probe Mounting (standard configuration)
Fig. 3.8 Probe Mounting (for improved probe heating)
Fig. 3.9 Probe Mounting (inclined configuration)

9
1
1
A –Standard Head B –Twin Gland C95 Head
Cell–
Black
(Outer)
Cell+
Red
(Inner)
THC–
Blue
Test Gas
Input
THC+
White
Cable Entry
Bush
Reference
Air Input
2 Cable Entries
Threaded M16
Reference
Air Input
Test Gas
Inlet
A –Standard Head
B –Twin Gland C95 Head
Cell–
Black
(Outer)
Cell+
Red
(Inner)
THC–
Blue
THC+
White
4 CONNECTIONS
4.1 Access to Electrical Connections –Fig. 4.1
For access to the terminal block:
1Standard Head –remove the two screws and open the
hinged cover.
1Twin-gland C95 Head –remove the three screws
retaining the cover and lift off the cover and gasket.
4.2 Cable Details
Make connections to the oxygen cell via 16/0.2mm red and
blue twin copper braid with overall PVC sheath. Where the
ambient temperature in the vicinity of the probe head exceeds
100°C use 0.75mm2 silicone rubber sheathed (part no.
YBM0614) and join to the screened cable via a suitable
junction box where the ambient temperature is lower.
Type K thermocouple –3/0.9mm2flat twin compensating
cable for use with NiCr/NiAl thermocouples to BS4937,
sheathing to BS6746 (part no. E35).
Type R thermocouple –3/0.9mm2flat twin compensating
cable for use with Pt/Pt 13% Rh thermocouples to BS4937,
sheathing to BS6746 (part no. E37).
4.3 Electrical Connections –Fig. 4.2
Make connections as shown in Fig. 4.2 and on the label inside
the probe head cover. The connecting cable must enter the
probe head via the bush provided (standard head) or suitable
cable glands (twin gland C95 head).
4.4 Reference Air Connections –Fig. 4.2
The reference air connector is 1/8 in. BSP fitted with an adaptor
to accept 1/4 in. i.d. x 3/8 in. o.d. nylon or PVC tubing (100°C/212°F
ambient maximum).
The probe requires a supply of clean, dry air at a flow rate of
500 to 1000ml/min. (1 to 2ft3/hr), which may be supplied from
regulated, clean, instrument air or preferably atmospheric air
from a small pump unit. Suitable air supply units are available
from the Company:
Model 003000240 –mains-powered pump unit with flow
gauge
Model 003000241 –regular unit with flow gauge.
4.5 Test Gas Inlet –Fig 4.2
The test gas inlet on standard heads is situated inside the
probe head and is sealed by a screwed plug. The inlet accepts
1/4in i.d. x 3/8 in o.d. plastic/silicone tube.
Twin-gland C95 heads are fitted with a permanent external
6mm o.d. test gas inlet. The inlet is connected internally to the
test gas input by means of a silicone tube.
Fig. 4.1 Access to Electrical Connections Fig. 4.2 Connections

10
Normal Operation
Pt/Pt 13% Rh Thermocouple
NiCr/NiAl
Thermocouple
Non-Carburizing
Atmospheres only
400 600 800 1000 1200
1250
1400
150
100
50
Kilocalories
Probe Output
(mV)
1500
500
1000
Degrees Celsius
Electronic Conduction
Errors
Probe
Life
Reduced
High
Resistance
752 1400 1700 2552 Degrees Fahrenheit
1112 2000 2282
5 OPERATION
6 MAINTENANCE
5.1 Principles of Operation
The ZGP2 probe contains a high temperature oxygen
concentration cell using zirconium oxide as a solid electrolyte.
Inner and outer electrodes are attached to the cell which is
specific to oxygen.
Air is supplied to the inner reference electrode to provide a
constant partial pressure of oxygen while the process gas to
be measured is in contact with the outer electrode.
A voltage is generated across the electrodes which is a
function of the ratio of the oxygen partial pressures at the two
electrodes. This voltage output represents ‘oxygen potential’
and can be used to control the atmosphere of annealing
processes etc.
For the measurement of ‘oxygen concentration’it is necessary
to correct for absolute temperature of the probe. The
temperature term in the Nernst equation, on which the voltage
output depends, illustrates this point:
E = 0.0496 T (log10 P0/P1) + C mV
Where: T = Absolute Temperature (°K)
P0= Partial Pressure Reference Gas
P1= Partial Pressure Sample Gas
C = Cell Constant
For ‘oxygen potential’measurement the following two
expressions relate the oxygen probe output (E mV) to oxygen
potential (µ)
E = (10.84µ+ 40) where µis in kilocalories
or
E=–(2.591µ+ 40) where µis in kilojoules
5.2 Range of Operation –Fig. 5.1
The internal resistance of the cell, i.e the resistance of the
electrolyte between the electrodes, decreases approximately
exponentially with increasing temperature and for this reason
it is recommended that the probe is used at temperatures
greater than 600°C (1112°F).
The maximum operating temperature is limited by two factors:
a) The onset of electronic conduction through the electrolyte
which reduces the measured output below its theoretical
value.
b) Evaporation of the outer electrode.
Electronic conduction is a function of both temperature and
oxygen partial pressure and, for stabilized zirconia, it occurs at
low levels of oxygen and high temperature. For the above
reasons it is recommended that the probe is used at
temperatures between 600°C (1112°F) and 1250°C (2282°F) –
see Fig. 5.1. [900°C (1652°F) max. for Type K thermocouple].
Caution. No maintenance is necessary, or
possible, on the probe and any attempt to dismantle it
could cause irreparable damage. The probe can be tested
for accuracy whilst connected to its measuring system but
without removal from its operating position.
It is recommended that at least one spare probe is held for
replacement or comparison purposes.
Fig. 5.1 Range of Operation

11
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7 FAULT FINDING
Warning. The probe operates at high
temperatures. Take all necessary precautions to avoid
injury through burns.
During its working life under normal recommended conditions
the probe output remains accurate and without drift. Probe
malfunctions can result from a fault in the probe or from
incorrect operating conditions.
The testing of a suspect probe can only be carried out
satisfactorily in its working position or in a furnace controlled
within the normal probe operating temperature range.
If a probe failure is suspected, first perform a test gas check as
described in the following sections.
7.1 In Situ Checking Using a Test Gas
Introduce a test gas of known concentration around the outer
electrode in the space between the filter washer, at the bottom
of the sheath, and the wadding around the lower end of the
probe –see Fig. 2.1. Four vent holes prevent the gas from
being trapped in the upper part of the sheath.
7.1.1 Standard Head
a) Gain access to the interior of the probe head by
unscrewing the lid fixing screws –see Section 4.1, Access
to Electrical Connections.
b) Remove the screwed plug from the test gas connector –
see Fig. 4.2A.
c) Fit 1/4in i.d. x 3/8in o.d. plastic or similar tubing and supply a
test gas of known oxygen concentration to the probe at a
steady flow rate of 800 to 1000ml/min (1.7 to 2.1ft3/hr).
Allow at least 5 minutes for the system to stabilize before
making a measurement.
d) Check that the oxygen concentration measured by the
probe system indicator or recorder, compares with the
specification for the test gas used.
e) Disconnect the test gas and ensure that the screwed plug
is replaced in the test gas connector. Failure to do this may
result in serious measurement errors due to the entry of air
into the probe.
f) Proceed to Table 7.1.
7.1.2 Twin Gland C95 Head
a) Remove the blanking screw in the external test gas inlet
and connect a gas supply of known oxygen concentration
–see Fig. 4.2. If a permanent test gas connection is used,
switch on the gas supply.
b) At a steady flow rate of 800 to 1000ml/min (1.7 to 2.1ft3/hr),
allow at least 5 minutes for the system to stabilize before
making a measurement.
c) Check that the oxygen concentration measured by the
probe system indicator or recorder, compares with the
specification for the test gas used.
d) If the test gas supply is not connected permanently to the
probe head, disconnect the supply from the external test
gas inlet and replace the blanking screw.
e) Proceed to Table 7.1.
7.2 Comparison with Another O2Probe
The probe may be checked by comparison with another of
known reliability, either by replacing the suspect probe with the
known probe or by mounting the known probe in close
proximity and monitoring both probes continuously for a short
period.
7.3 Returning the Probe to the Factory for
Checking
If it is not possible to carry out the above tests on site and
failure or malfunction is suspected, the probe may be returned
to the Company for checking, in which case the probe must be
carefully dismantled and repacked in its original packing to
ensure safe carriage.
7.4 Continuity Check
Connect a 100kΩresistor across the probe output. If the
output drops to near zero millivolts and then drifts when the
resistance is removed, this indicates that the probe may be
open circuit or have a high impedance.
Table 7.1 Fault Finding

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0062111541–01
63–
541
63–
2351
0092561231–01
52–
541
52–
1931
00212912711–01
71–
541
71–
8221
epyTelpuocomrehT
epyThtaehS KepyTRepyT
008yolocnI
nialecroPsuonimulA
dezillatsyrceR
)laiceps(animulA
009 °C
009 °C
009 °C
2561 °F
2561 °F
2561 °F
0001 °C
0531 °C
0041 °*C
2381 °F
2642 °F
2552 °F
8 SPECIFICATION
General
Temperature limits:
*Reduced probe cell life may result if probe is operated continuously
above 1250°C (2282°F).
Reference air flow 500 to 1000 ml/min. (1 to 2 ft3/hr)
Response rate 0.1s estimated
Measuring range Refer to Fig. 5.1. The lower limit of operation, determined by the onset of electronic
conduction in the solid electrolyte is dependent on temperature. As a guide, the limits
are given in Table 8.1 for 1% electronic conduction but, in practice, it may be possible
to measure even lower oxygen potential levels without introducing significant errors.
Electrical Data
Cell Constant 0V ±2mV
Probe accuracy Typically better than ±5% of reading
System accuracy ±2% of test gas reading when calibrated against a certified test gas
Cell output impedance Typically <100kΩ@ 700°C (1292°F)
Thermocouple Pt/Pt 13% Rh Pt 2 BS4937 Type R
NiCr/NiAl Pt 4 BS4937 Type K
Connections
Probe output 2-core copper screened overall
Thermocouple 2-core compensated to suit type of thermocouple fitted
Mounting
Flange mounted Vertical or horizontal. 42mm (1.65 in.) i.d. minimum bore clearance hole
Overall dimensions (nominal):
Type C95 head 683 or 1080mm (26.9 or 42.5 in.)
Standard head 663 or 1060mm (26.1 or 41.7 in.)
Insertion length (nominal): 556 or 953mm (21.89 or 37.52 in.)
Clearance for removal Overall length +25mm (1 in.)
Weight 2.5kg (600mm probe) [5.5lb (24 in. probe)]
2.8kg (1000mm probe) [6.2lb (38 in. probe)]
Mechanical Data
Construction:
Solid electrolyte Stabilized zirconia oxide
Protective sheath Aluminous porcelain, Incoloy 800 or recrystallized alumina
Table 8.1 Measuring Range

PRODUCTS & CUSTOMER SUPPORT
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and purge-gas monitors, thermal conductivity.
Customer Support
We provide 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 Limited
Tel: [phone]
Fax: [phone]
United States of America
ABB Inc.
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 all storage, installation, operating and maintenance
records relating to the alleged faulty unit.

IM/ZGP2 Issue 8
ABB Limited
Oldends Lane, Stonehouse
Gloucestershire,
GL10 3TA
UK
Tel: [phone]
Fax: [phone]
ABB Inc.
2175 Lockheed Way
Carson City,
NV 89706
USA
Tel: [phone]
Fax: [phone]
ABB has Sales & Customer Support
expertise in over 100 countries worldwide
www.abb.com
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 (03.04)
© ABB 2004