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Rosemount Analytical
M
ODEL
7001D, 7002D
O
XYGEN
M
ONITORS
I
NSTRUCTION
M
ANUAL
748039-U
N
OTICE
The information contained in this document is subject to change without notice.
Manual Part Number 748039-U
December 2000
Printed in U.S.A.
Rosemount Analytical Inc.
4125 East La Palma Avenue
Anaheim, California 92807-1802
Ryton
®
is a registered trademark of Phillips Petroleum Co.
Teflon
®
is a registered trademark of E.I. duPont de Nemours and Co., Inc.
UNOX
®
is a trademark for Wastewater Treatment Systems of Union Carbide Corp.
C
ONTENTS
748039-U Rosemount Analytical December 2000
i
Model 7001D, 7002D Oxygen Monitors
P
REFACE
SAFETY SUMMARY ..........................................................................................P1
SPECIFICATIONS - GENERAL .........................................................................P3
SPECIFICATIONS – ELECTRICAL....................................................................P3
SPECIFICATIONS - PHYSICAL.........................................................................P4
SPECIFICATIONS - ALARM..............................................................................P4
SPECIFICATIONS - SENSORS.........................................................................P5
CUSTOMER SERVICE, TECHNICAL ASSISTANCE AND FIELD SERVICE.............P6
RETURNING PARTS TO THE FACTORY.........................................................P6
TRAINING ......................................................................................................P6
DOCUMENTATION............................................................................................P6
COMPLIANCES .................................................................................................P7
SECTION 1. INTRODUCTION
1.1 OVERVIEW .................................................................................................1
1.2 AMPLIFIER MODULE .................................................................................1
1.3 OXYGEN SENSORS...................................................................................2
1.4 MODEL 7001D SENSOR INSTALLATION KITS.........................................4
1.5 MODEL 7002D SENSOR INSTALLATION KITS.........................................5
S
ECTION
2.
INSTALLATION
2.1 MODEL 7001/7002 OXYGEN MONITOR....................................................9
2.1.1 Facility Preparation........................................................................9
2.1.2 Location and Mounting....................................................................9
2.1.3 Electrical Connections - General Precautions................................10
2.1.3.1. Line Power Connection..................................................11
2.1.3.2. System Grounding Connections.....................................11
2.1.3.3 Sensor Cable Connections.............................................11
C
ONTENTS
ii
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
2.1.3.4. Output Cable Connections............................................. 12
2.1.3.5. Output Connections for Alarms...................................... 13
2.2 MODEL 7001D SENSOR MOUNTING KITS ............................................. 15
2.2.1 In-Line Flow Kit PN 639900........................................................... 15
2.2.1.1 Monitoring Boiler Feedwater, High-Purity Water, or
Deaerated Sea Water................................................................. 16
2.2.1.2 Monitoring Deoxygenated Brine for Oil Well Flooding... 18
2.2.2 Submersion Kit PN 623712........................................................... 19
2.2.3 In-Line Flow Kit PN 623711........................................................... 22
2.3 MODEL 7002D SENSOR INSTALLATION KITS ........................................ 25
2.3.1 Submersion Kits 639901(Polypropylene) and PN 646626
Ryton)........................................................................... 25
2.3.2 In-Line Flow Kits PN 639902 (Polypropylene) and PN 646627
(Ryton).......................................................................... 29
2.3.3 45° Submersion Kit PIN 639903................................................... 32
2.3.4 Submersion Kit PN 623714........................................................... 35
2.3.5 In-Line Flow Kit PN 623713......................................................... 38
2.3.6 Equilibrium Sensor Guard Kit PN 624741 .................................... 41
2.3.7 Equilibrium Sensor Fast Response Kit PN 624742...................... 43
2.3.8 In-Line Kit PN 624743 ( Equilibrium)............................................ 45
SECTION 3. STARTUP AND CALIBRATION
3.1 SYSTEM STARTUP AND INITIAL CALIBRATION WITH AIR..................... 49
3.2 CALIBRATION OF MODEL 7001D............................................................. 54
3.2.1 Calibration for Measurement of Dissolved Oxygen in
High-Purity Water......................................................... 54
3.2.2 Calibration for Measurement of Dissolved Oxygen in
Deaerated Sea Water................................................... 55
3.2.3 Calibration for Measurement of Dissolved Oxygen in
Deoxygenated Brine for Oil Well Flooding.................... 55
3.3 CALIBRATION OF MODEL 7002D............................................................ 57
3.3.1 Measurements in Sea Water or Brine: Calibration with Air for
Readout of Dissolved Oxygen in Parts Per Million
by Weight (mg/liter). ..................................................... 57
3.3.2 Calibration by Chemical Analysis for Readout of Dissolved
Oxygen in Parts per Million by Weight (mg/liter)........... 58
3.3.3 Combination of Chemical Analysis and Air Calibration for
Readout of Dissolved Oxygen in Parts per Million by
Weight (mg/liter)........................................................... 58
3.3.4 Calibration with Air for Readout of Dissolved Oxygen in
Percent of Saturation.................................................... 59
C
ONTENTS
748039-U Rosemount Analytical December 2000
iii
Model 7001D, 7002D Oxygen Monitors
SECTION 4. OPERATION
4.1 ROUTINE OPERATION .............................................................................61
4.2 FREQUENCY OF CALIBRATION ..............................................................61
4.3 FREQUENCY OF SENSOR RECHARGING..............................................62
S
ECTION
5. T
HEORY
5.1 ELECTROCHEMICAL THEORY ................................................................63
5.1.1 Oxygen Sensor (Rechargeable or Non- Rechargeable) ................63
5.1.2 Equilibrium Sensor.........................................................................63
5.2 PRACTICAL ASPECTS OF DISSOLVED OXYGEN MEASUREMENT ......64
5.2.1 Variables Which Influence Measurement.......................................64
5.2.2 Interrelation of Measurement Units................................................66
5.2.3 Readout of Dissolved Oxygen in Parts by Weight..........................67
5.2.4 Readout of Dissolved Oxygen in Percent Saturation.....................68
SECTION 6. SENSOR MAINTENANCE
6.1 RECHARGEABLE SENSORS.....................................................................71
6.1.1 Recharging Sensor........................................................................71
6.1.2 Rejuvenating Cathode...................................................................74
6.1.2.1 Cell Separator Kit (PN 637358).......................................75
6.2 NON-RECHARGEABLE SENSORS............................................................75
S
ECTION
7. S
ERVICE
7.1. SYSTEM CHECKOUT.................................................................................77
7.2 CHECKING SENSOR AND CABLE .............................................................78
7.3 CHECKING NON-RECHARGEABLE SENSOR AND CABLE......................81
7.4 CHECKING ELECTRONICS........................................................................82
S
ECTION
8. R
EPLACEMENT PARTS
8.1 REPLACEMENT PARTS – MODELS 7001D AND 7002D..........................83
748169 I
NSTRUCTION
S
HEET
, 624737 H
EADER
K
IT
– M
ODEL
7002D
748597 I
NSTRUCTION
S
HEET
, S
ENSOR
C
ONVERSION
– R
ECHARGEABLE TO
N
ON
-R
ECHARGEABLE
G
ENERAL
P
RECAUTIONS FOR
H
ANDLING AND
S
TORING
H
IGH
P
RESSURE
G
AS
C
YLINDERS
W
ARRANTY
F
IELD
S
ERVICE AND
R
EPAIR
F
ACILITIES
C
ONTENTS
iv
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
F
IGURES
1-1. Model 7001D Oxygen Monitor ................................................................. 2
1-2. Model 7002D Oxygen Monitor ................................................................. 2
1-3. Rechargeable Sensor.............................................................................. 3
1-4. Rechargeable Sensor with Gland ............................................................ 3
1-5. Non-Rechargeable Sensor....................................................................... 4
2-1. Power Supply Board Connector Locations .............................................. 11
2-2. Connections for Potentiometric Recorder with Non-Standard Span ........ 14
2-3. Typical Example of Oxygen Monitor Connected in Series with Several
Current-Activated Devices............................................................ 14
2-4. Rechargeable Sensor with In-Line Flow Kit 639900 – Sectional View..... 15
2-5. Rechargeable Sensor with In-Line Flow Kit 639900 – Outline and
Mounting Dimensions................................................................... 15
2-6. In-Line Flow Kit 639900 - Typical Panel-Mounted Installation................ 16
2-7. In-Line Flow Kit 639900 - Typical Power Plant Installations..................... 17
2-8. In-Line Flow Kit 639900 - Typical Installation for Oil Well Flooding.......... 18
2-9. Non-Rechargeable Sensor with Submersion Kit 623712 – Sectional
View.............................................................................................. 19
2-10. Non-Rechargeable Sensor with Submersion Kit 623712 – Outline
and Mounting Dimensions............................................................ 20
2-11. Non-Rechargeable Sensor Submersion Kit 623712 – Typical
Installation .................................................................................... 21
2-12. Non-Rechargeable Sensor with In-Line Pressure Compensation
Kit 623711 – Sectional View......................................................... 22
2-13. Non-Rechargeable Sensor with In-Line Flow Kit 623711 – Outline
and Mounting Dimensions............................................................ 23
2-14. Non-Rechargeable Sensor with In-Line Pressure Compensation
Kit 623711 – Typical Installation................................................... 24
2-15. Rechargeable Sensor with Submersion Kit 639901 or 646626 –
Sectional View.............................................................................. 25
2-16. Rechargeable Sensor with Submersion Kit 639901 or 646626 –
Outline and Mounting Dimensions................................................ 26
2-17. Rechargeable Sensor with Submersion Kit 639901 or 646626 –
Preferred Mounting Orientation .................................................... 27
2-18. Rechargeable Sensor with Submersion Assembly 639901 or 646626
– Typical Installation During Plant Construction ........................... 27
2-19. Rechargeable Sensor with Submersion Assembly 639901 or 646626
– Typical Installation In An Existing Plant..................................... 28
2-20. Rechargeable Sensor with In-Line Flow Kit PN 639902 or 646627
– Sectional View........................................................................... 29
2-21. Rechargeable Sensor with In-Line Flow Kit PN 639902 or 646627
– Outline and Mounting Dimensions............................................. 30
2-22. Rechargeable Sensor with In-Line Flow Kit PN 639902 or 646627
– Preferred Orientation................................................................. 31
C
ONTENTS
748039-U Rosemount Analytical December 2000
v
Model 7001D, 7002D Oxygen Monitors
2-23. 45° Rechargeable Sensor with Submersion Kit 639903 – Sectional
View ..............................................................................................32
2-24. 45° Rechargeable Sensor with Submersion Kit – Outline and Mounting
Dimensions ...................................................................................33
2-25. 45° Rechargeable Sensor with Submersion Kit – Typical Installation
In UNOX System...........................................................................34
2-26. Non-Rechargeable Sensor with Submersion Kit PN 623714 –
Sectional View...............................................................................35
2-27. Non-Rechargeable Sensor with Submersion Kit 623714 – Outline and
Mounting Dimensions....................................................................36
2-28. Non-Rechargeable Sensor with Submersion Kit 623714 –
Typical Installation.........................................................................37
2-29. Non-Rechargeable Sensor with In-Line Flow Kit PN 623713 –
Sectional View...............................................................................38
2-30. Non-Rechargeable Sensor with In-Line Flow Kit PN 623713 –
Outline and Mounting Dimensions ................................................39
2-31. Non-Rechargeable Sensor with In-Line Flow Kit 623713 –
Typical Installation.........................................................................40
2-32. Equilibrium Sensor with Guard Kit 624741 – Sectional View....................41
2-33. Equilibrium Sensor with Guard Kit 624741 – Outline and Mounting
Dimensions ...................................................................................42
2-34. Equilibrium Sensor with Fast Response Kit 624742 – Sectional View.....43
2-35. Equilibrium Sensor with Fast Response Kit 624742 – Outline and
Mounting Dimensions....................................................................44
2-36. Equilibrium Sensor with In-Line Flow Kit 624743 – Sectional View..........45
2-37. Equilibrium Sensor with In-line Flow Kit 624743 – Outline and
Mounting Dimensions....................................................................46
2-38. Equilibrium Sensor with In-Line Flow Kit 624743 – Preferred Orientation 47
3-1. Display Board Controls and Adjustments.................................................50
3-2. Isolated Current Output Board..................................................................51
3-3. Solubility of Oxygen in Water of Various Degrees of Salinity ...................56
5-1. Rechargeable Oxygen Sensor – Sectional View......................................64
5-2. Solubility of Oxygen in Air-Saturated Water as a Function of
Temperature..................................................................................68
6-1. Oxygen Sensor – Exploded View.............................................................73
6-2. Location of Cell Separator in Oxygen Sensor...........................................75
7-1. Expected Display Reading vs. Substitute Resistance (Model 7001D)......79
7-2. Expected Display Reading vs. Substitute Resistance (Model 7002D.......80
T
ABLES
7-1. Rechargeable Sensor Problems Troubleshooting Guide............................81
7-2. Non-Rechargeable Sensor Problems Troubleshooting Guide....................81
C
ONTENTS
vi
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
DRAWINGS (LOCATED IN REAR OF MANUAL)
620434 Schematic, Isolated V/I Board
622617 Outline and Mounting Dimensions, Oxygen Monitor
622227 Interconnect Diagram, Oxygen Monitor
622530 Schematic, Display Board
622538 Schematic, Power Supply Board
P
REFACE
748039-U Rosemount Analytical December 2000
P1
Model 7001D, 7002D Oxygen Monitors
S
AFETY
S
UMMARY
To avoid explosion, loss of life, personal injury and damage to this equipment and
on-site property, all personnel authorized to install, operate and service the Model
7001D, 7002D Oxygen Monitors should be thoroughly familiar with and strictly follow
the instructions in this manual. Save these instructions.
DANGER is used to indicate the presence of a hazard which will cause severe
personal injury, death, or substantial property damage if the warning is ignored
WARNING is used to indicate the presence of a hazard which can cause severe
personal injury, death, or substantial property damage if the warning is ignored.
CAUTION is used to indicate the presence of a hazard which will or can cause minor
personal injury or property damage if the warning is ignored.
NOTE is used to indicate installation, operation, or maintenance information which is
important but not hazard-related.
Do not operate without doors and covers secure. Servicing requires access to
live parts which can cause death or serious injury. Refer servicing to qualified
personnel.
For safety and proper performance this instrument must be connected to a
properly grounded three-wire source of power.
This instrument was shipped from the factory set up to operate on either 115
VAC 50/60 Hz, or 230 VAC 50/60 Hz, as specified by sales order. For operation
on 230 VAC 50/60 Hz, see Section 2.3.1.
WARNING: ELECTRICAL SHOCK HAZARD
P
REFACE
P2
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
Tampering or unauthorized substitution of components may adversely affect
safety of this product. Use only factory documented components for repair
WARNING: PARTS INTEGRITY
!
P
REFACE
748039-U Rosemount Analytical December 2000
P3
Model 7001D, 7002D Oxygen Monitors
SPECIFICATIONS - GENERAL
C
ATALOG
N
UMBER
M
ODEL
7001D
192601
C
ATALOG
N
UMBER
M
ODEL
7002D
192602
F
RONT
P
ANEL
D
ISPLAY
M
ODEL
7001D
0 to 199.9 parts-per-thousand-million (p/10
9
) by weight, displayed as ppb
F
RONT
P
ANEL
D
ISPLAY
M
ODEL
7002D
0 to 19.9 parts-per-thousand-million (p/10
6
) by weight, displayed as ppm
AMBIENT TEMPERATURE
-20°F to 122°F (-29°C to 50°C)
A
MBIENT
H
UMIDITY
Up to 95% relative humidity, non-condensing
S
YSTEM
L
INEARITY
For constant sample temperature: ±1% of fullscale
S
AMPLE
T
EMPERATURE
32°F to 110°F (0°C to 44°C)
1
S
PECIFICATIONS
– E
LECTRICAL
P
OWER
R
EQUIREMENTS
(
SWITCH SELECTABLE
)
107 to 127 VAC 50/60 Hz @ 0.2 Ampere
214 to 254 VAC 50/60 Hz @ 0.1 Ampere
D
ISPLAY
Digital liquid crystal (LCD)
O
UTPUT
(
POTENTIOMETRIC
,
SELECTABLE RANGE
)
0 to 200, 0 to 100 or 0 to 50 ppb, fullscale
S
ELECTABLE
F
ULLSCALE
V
OLTAGE
0 to 10 volts, 0 to 5 volts, or 0 to 1 volt
P
OTENTIOMETRIC
O
UTPUT
Minimum load is 2K ohms
I
SOLATED
C
URRENT
O
UTPUT
(O
PTIONAL
)
Field selectable 0 to 20 mA or 4 to 20 mA over same range as
potentiometric output
Maximum load for current output is 600 ohms
1
Rated specifications are for an operating temperature of 25°C.
P
REFACE
P4
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
SPECIFICATIONS - PHYSICAL
E
NCLOSURE
ABS Plastic, Black, NEMA Type 4X, IP65
M
OUNTING
Standard: Panel Mount
Optional: Wall Mount, Pipe Mount
DIMENSIONS
5.7 x 5.7 x 7.6 inches (14 x 14 x 19 cm) HxWxD
WEIGHT
Approximately 4.2 pounds (1.9 kg)
E
NCLOSURE
C
LASSIFICATION
General purpose
Optional air purge designed to NFPA-496 Type Z
1
M
AXIMUM
D
ISTANCE
B
ETWEEN
O
XYGEN
M
ONITOR AND
S
ENSOR
2
1000 feet (304.8 meters)
S
PECIFICATIONS
- A
LARM
A
LARM
M
ODEL
7001D
0 to 200, 0 to 100 or 0 to 50 ppb, fullscale
A
LARM
M
ODEL
7002D
0 to 20, 0 to 10 or 0 to 2 ppm, fullscale
A
LARM
C
ONTACTS
Two independently adjustable SPDT relay contact actuations
A
LARM
R
ELAY
C
ONTACTS
R
ATINGS
(R
ESISTIVE
L
OAD
)
Maximum switching voltage: 250 VAC, 30 VDC
Maximum switching current: 3A
D
EADBAND
Adjustable from less than 1% to 20% of range at any setpoint
R
EPEATABILITY
±0.1% of range
1
The optional air purge, when installed along with user supplied components, is designed to equip the instrument
enclosure with Type Z protection per Standard ANSI/NFPA 496-1986. This reduces the classification within the
enclosure from Class I, Division 2 (normally non-hazardous) to non-hazardous, thus permitting installation in a location
classified Class I, Groups A, B, C, D, Division 2. This method of protection is recognized in Article 500-1 of the National
Electrical Code (NEC, ANSI/NFPA 70).
2
The oxygen sensors and interconnecting cable used with the Models 7001D and 7002D Oxygen Monitors are non-
incendive in normal operation and comply with the requirements of Articles 501-3 (b)(1) c and 501-4 (b), Exception of the
National Electrical Code, ANSI/NFPA 70-1987, for installation in Class I, Groups A,B,C,D, Division 2 classified locations.
P
REFACE
748039-U Rosemount Analytical December 2000
P5
Model 7001D, 7002D Oxygen Monitors
SPECIFICATIONS - SENSORS
T
YPES
- 7001D
Rechargeable, Polypropylene - PN 623246
Non-Rechargeable, Polypropylene - PN 623740
T
YPES
- 7002D
Rechargeable, Polypropylene - PN 623245
Rechargeable, Ryton – PN 190404
Non-Rechargeable, Polypropylene - PN 623741
S
TABILITY
±1% of fullscale at any given temperature per 24 hours
T
EMPERATURE
C
OMPENSATION
32°F to 110°F (0°C to 44°C) ±6% of reading
60°F to 90°F (15°C to 32°C) ±3% of reading
For any 30°F (16°C) range ±4% of reading
R
ESPONSE
T
IME
90% in 20 seconds for rechargeable and non-rechargeable sensors
90% in 60 seconds for equilibrium sensor
S
AMPLE
P
RESSURE
0 to 50 psig (0 to 345 kPa)
1
A
LSO REFER TO INSTRUCTIONS SUPPLIED WITH SENSOR
.
1
With atmospheric discharge of sample.
P
REFACE
P6
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
CUSTOMER SERVICE, TECHNICAL ASSISTANCE AND FIELD SERVICE
For order administration, replacement Parts, application assistance, on-site or factory
repair, service or maintenance contract information, contact:
Rosemount Analytical Inc.
Process Analytical Division
Customer Service Center
1-800-433-6076
R
ETURNING
P
ARTS TO THE
F
ACTORY
Before returning parts, contact the Customer Service Center and request a Returned
Materials Authorization (RMA) number. Please have the following information when
you call: Model Number, Serial Number, and Purchase Order Number or Sales Order
Number.
Prior authorization by the factory must be obtained before returned materials will be
accepted. Unauthorized returns will be returned to the sender, freight collect.
When returning any product or component that has been exposed to a toxic, corrosive
or other hazardous material or used in such a hazardous environment, the user must
attach an appropriate Material Safety Data Sheet (M.S.D.S.) or a written certification
that the material has been decontaminated, disinfected and/or detoxified.
Return to:
Rosemount Analytical Inc.
4125 East La Palma Avenue
Anaheim, California 92807-1802
USA
TRAINING
A comprehensive Factory Training Program of operator and service classes is
available. For a copy of the Current Operator and Service Training Schedule contact
the Technical Services Department at:
Rosemount Analytical Inc.
Phone: 1-714-986-7600
FAX: 1-714-577-8006
D
OCUMENTATION
The following Model 7001D, 7002D Oxygen Monitors instruction materials are
available. Contact Customer Service or the local representative to order.
748039 Instruction Manual (this document)
P
REFACE
748039-U Rosemount Analytical December 2000
P7
Model 7001D, 7002D Oxygen Monitors
COMPLIANCES
The Model 7001D and 7002D Oxygen Monitors are designed to comply with applicable
American standards for protection against electrical shock, mechanical and fire hazards in
non-hazardous locations. The instrument(s) must be installed in accordance with the
provisions of the National Electrical Code (NEC), ANSI/NFPA 70, and/or any applicable
national or local code(s), and, operated and maintained in the recommended manner.
P
REFACE
P8
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
NOTES
1
I
NTRODUCTION
748039-U Rosemount Analytical December 2000
1
Model 7001D, 7002D Oxygen Monitors
1.1 OVERVIEW
Model 7001D and 7002D Oxygen Monitors (Figure 1-1) automatically and continuously
measure the concentration of dissolved oxygen in water or non-aqueous solution. The
determination is based on measurement of the electrical current developed by an
amperometric sensor in contact with the sample.
The monitors provide direct readout, on a front-panel display, of dissolved oxygen. The
Model 7001D readout is in parts per thousand million (ppb) by weight, while the Model
7002D readout is in parts per million (ppm) by weight. Alarms and a potentiometric output
are standard features. The full scale range of the alarms and the potentiometric output are
each independently selectable. Thus, the range of the potentiometric output may be
changed without the need to readjust alarm setpoints.
The oxygen monitor system consists of a sensor, a chamber, and an amplifier module. The
sensor is housed within the chamber and is connected to the amplifier by a multi-conductor
shielded cable.
1.2 AMPLIFIER MODULE
The amplifier module conditions the sensor output signal to provide direct readout of
dissolved oxygen in parts per thousand million (ppb) (Model 7001D) or parts per million
(ppm) (Model 7002D) by weight. It also contains current-measuring circuitry, operating
controls, digital display, alarms and signal output provisions.
The module is designed for panel mounting. An accessory kit (PN 622622) permits the
amplifier module to be mounted on a vertical or horizontal pipe. An accessory kit (PN
652117) permits wall (surface) mounting. An optional air purge is designed to meet
requirements for NFPA 496 Type Z air purge (see specifications) .
An accessory board (PN 621023) provides a field-selectable 0 to 20 milliampere or 4 to 20
milliampere isolated current output.
I
NTRODUCTION
2
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
LOW
SET PT
PPB
LOW
SET PT
Model 7001D Oxygen Monitor
LOW
SET PT
PPM
LOW
SET PT
Model 7002D Oxygen Monitor
F
IGURE
1-1. M
ODEL
7001D O
XYGEN
M
ONITOR
F
IGURE
1-2. M
ODEL
7002D O
XYGEN
M
ONITOR
1.3 OXYGEN SENSORS
Rosemount Analytical offers rechargeable and disposable oxygen sensors which can be
used with the Model 7001D and 7002D. See Figures 1-3, 1-4 and 1-5. See Sections 2.4 -
Sensors, Rechargeable, 2.5 - Sensors - Non-Rechargeable and 7.3 - Sensors,
Replacement Parts for additional information. Sensors are ordered separately from kits.
The available kits are: Submersion, In-Line Flow, and Fast Response (Section 1.4).
The rechargeable oxygen sensors are available in polypropylene or RYTON with the
associated hardware available in PVC or RYTON. The non-rechargeable oxygen sensors
are available in polypropylene with associated hardware in PVC.
I
NTRODUCTION
748039-U Rosemount Analytical December 2000
3
Model 7001D, 7002D Oxygen Monitors
Integral Gland
with O-Rings
Polypropylene bodied sensors are more resistant to service where conditions are more
extreme and hydrocarbons may be present in the sample stream. RYTON bodied sensors
are most resistant to organics, but have specific limitations in resistance to certain organic
compounds
1
.
Model 7001D Sensors
Rechargeable with Gland, Polypropylene 623246
Non-Rechargeable, Polypropylene 623740
Model 7002D Sensors
Rechargeable with Gland, Polypropylene 623245
Rechargeable with Gland, Ryton 190404
Rechargeable Equilibrium with Gland 624750
Rechargeable 45°
623373
Non-Rechargeable, Polypropylene 623741
F
IGURE
1-3. R
ECHARGEABLE
S
ENSOR
F
IGURE
1-4. R
ECHARGEABLE
S
ENSOR WITH
G
LAND
1
'RYTON is resistant to 30% sulfuric acid, 85% phosphoric-acid, 30% sodium hydroxide, gasoline, aliphatic alcohols, esters, ethers, and ketones as well as to aromatic
amines. It is not particularly suited for service in strong oxidizing agents, aliphatic amines, chlorinated hydrocarbons, or aromatic nitrites, aldehydes, and nitro compounds.
I
NTRODUCTION
4
December 2000 Rosemount Analytical 748039-UModel 7001D, 7002D Oxygen Monitors
F
IGURE
1-5. N
ON
-R
ECHARGEABLE
S
ENSOR
1.4 MODEL 7001D SENSOR INSTALLATION KITS
Note:
Sensor installation kits DO NOT include a sensor.
Fast Response Liquid Flow Kit PN 639900 (Rechargeable, Polypropylene)
Used with rechargeable sensor PN 623246, this kit is designed for ppb level dissolved
oxygen in water applications. The sample enters the chamber through a nozzle and
impinges directly on the sensor membrane for fast response, then discharges at
atmospheric pressure. Nominal flow is 250 to 500 cc/min.
Typical sample streams include: high purity water, such as boiler feedwater; deaerated sea
water feed in evaporative desalination processes; and deoxygenated brine, as used in oil
well flooding.
Fast Response Liquid Flow Kit PN 623711 ( Non- Rechargeable, Polypropylene)
Designed for use with non-rechargeable oxygen sensor (PN 623740) when a flowing liquid
stream with discharge of the effluent from the flow chamber at atmospheric pressure is
being measured. This requirement means that upstream sample pressure reduction must
be performed on the process sample from a pressurized source before it is presented to the
flow chamber for analysis by the sensor. Sample input flow rate should be selected in the
range of 50 to 100 cc/min and care must be taken with downstream pressure drops to
prevent back pressurization of the sensor. Typical applications are the same as Kit 639900.
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