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Rosemount™ 499ADO
Dissolved Oxygen Sensor
Quick Start Guide
00825-0100-3491, Rev AB
November 2019
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Quick Start Guide November 2019
Safety information
CAUTION
Sensor/process application compatibility
The wetted sensor materials may not be compatible with process composition and operating
conditions.
Application compatibility is entirely the operator's responsibility.
CAUTION
Equipment damage
Do not exceed pressure and temperature specifications
Pressure: 65 psig (549 kPa abs) max.
Temperature: 32 to 122 °F (0 to 50 °C)
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end
users’ equipment. This could be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your
system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for
all systems used within the facility.
Notice
ROSEMOUNT (“SELLER”) SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS IN THIS
MANUAL OR OMISSIONS FROM THIS MANUAL. SELLER MAKES NO WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH RESPECT TO THIS MANUAL AND, IN NO EVENT, SHALL SELLER BE LIABLE
FOR ANY SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT LIMITED TO, LOSS OF
PRODUCTION, LOSS OF PROFITS, ETC.
PRODUCT NAMES USED HEREIN ARE FOR MANUFACTURER OR SUPPLIER IDENTIFICATION ONLY AND
MAY BE TRADEMARKS/REGISTERED TRADEMARKS OF THESE COMPANIES.
THE CONTENTS OF THIS PUBLICATION ARE PRESENTED FOR INFORMATIONAL PURPOSES ONLY, AND
WHILE EVERY EFFORT HAS BEEN MADE TO ENSURE THEIR ACCURACY, THEY ARE NOT TO BE
CONSTRUED AS WARRANTIES OR GUARANTEES, EXPRESSED OR IMPLIED, REGARDING THE PRODUCTS
OR SERVICES DESCRIBED HEREIN OR THEIR USE OR APPLICABILITY. WE RESERVE THE RIGHT TO
MODIFY OR IMPROVE THE DESIGNS OR SPECIFICATIONS OF SUCH PRODUCTS AT ANY TIME.
SELLER DOES NOT ASSUME RESPONSIBILITY FOR THE SELECTION, USE, OR MAINTENANCE OF ANY
PRODUCT. RESPONSIBILITY FOR PROPER SELECTION, USE, AND MAINTENANCE OF ANY SELLER
PRODUCT REMAINS SOLELY WITH THE PURCHASER AND END-USER.
Warranty
1.
LIMITED WARRANTY: Subject to the limitations contained in Section 2 herein and except as
otherwise expressly provided herein, Rosemount (“Seller”) warrants that the firmware will
execute the programming instructions provided by Seller and that the Goods manufactured
or Services provided by Seller will be free from defects in materials or workmanship under
normal use and care until the expiration of the applicable warranty period. Goods are
warranted for twelve (12) months from the date of initial installation or eighteen (18) months
from the date of shipment by Seller, whichever period expires first. Consumables and
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November 2019 Quick Start Guide
Services are warranted for a period of 90 days from the date of shipment or completion of the
Services. Products purchased by Seller from a third party for resale to Buyer (“Resale
Products”) shall carry only the warranty extended by the original manufacturer. Buyer agrees
that Seller has no liability for Resale Products beyond making a reasonable commercial effort
to arrange for procurement and shipping of the Resale Products. If Buyer discovers any
warranty defects and notifies Seller thereof in writing during the applicable warranty period,
Seller shall, at its option, promptly correct any errors that are found by Seller in the firmware
or Services, or repair or replace F.O.B. point of manufacture that portion of the Goods or
firmware found by Seller to be defective, or refund the purchase price of the defective
portion of the Goods/Services. All replacements or repairs necessitated by inadequate
maintenance, normal wear and usage, unsuitable power sources, unsuitable environmental
conditions, accident, misuse, improper installation, modification, repair, storage or handling,
or any other cause not the fault of Seller are not covered by this limited warranty, and shall be
at Buyer's expense. Seller shall not be obligated to pay any costs or charges incurred by Buyer
or any other party except as may be agreed upon in writing in advance by an authorized Seller
representative. All costs of dismantling, reinstallation and freight, and the time and expenses
of Seller's personnel for site travel and diagnosis under this warranty clause shall be borne by
Buyer unless accepted in writing by Seller. Goods repaired and parts replaced during the
warranty period shall be in warranty for the remainder of the original warranty period or
ninety (90) days, whichever is longer. This limited warranty is the only warranty made by
Seller and can be amended only in a writing signed by an authorized representative of Seller.
Except as otherwise expressly provided in the Agreement, THERE ARE NO REPRESENTATIONS
OR WARRANTIES OF ANY KIND, EXPRESSED OR IMPLIED, AS TO MERCHANTABILITY, FITNESS
FOR PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO ANY OF THE GOODS
OR SERVICES. It is understood that corrosion or erosion of materials is not covered by our
guarantee.
2.
LIMITATION OF REMEDY AND LIABILITY: SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED
BY DELAY IN PERFORMANCE. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF
WARRANTY HEREUNDER SHALL BE LIMITED TO REPAIR, CORRECTION, REPLACEMENT, OR
REFUND OF PURCHASE PRICE UNDER THE LIMITED WARRANTY CLAUSE IN SECTION 1
HEREIN. IN NO EVENT, REGARDLESS OF THE FORM OF THE CLAIM OR CAUSE OF ACTION
(WHETHER BASED IN CONTRACT, INFRINGEMENT, NEGLIGENCE, STRICT LIABILITY, OTHER
TORT, OR OTHERWISE), SHALL SELLER'S LIABILITY TO BUYER AND/OR ITS CUSTOMERS
EXCEED THE PRICE TO BUYER OF THE SPECIFIC GOODS MANUFACTURED OR SERVICES
PROVIDED BY SELLER GIVING RISE TO THE CLAIM OR CAUSE OF ACTION. BUYER AGREES
THAT IN NO EVENT SHALL SELLER'S LIABILITY TO BUYER AND/OR ITS CUSTOMERS EXTEND TO
INCLUDE INCIDENTAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES. THE TERM
“CONSEQUENTIAL DAMAGES” SHALL INCLUDE, BUT NOT BE LIMITED TO, LOSS OF
ANTICIPATED PROFITS, LOSS OF USE, LOSS OF REVENUE, AND COST OF CAPITAL.
Contents
First steps.....................................................................................................................................5
Install........................................................................................................................................... 7
Wire........................................................................................................................................... 12
Calibrate.................................................................................................................................... 17
Maintenance.............................................................................................................................. 18
Accessories................................................................................................................................ 21
Quick Start Guide 3
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Quick Start Guide November 2019
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November 2019 Quick Start Guide
1 First steps
1.1 Unpack and inspect
Procedure
1. Inspect the shipping container. If it is damaged, contact the shipper
immediately for instructions.
2. If there is no apparent damage, unpack the container. Be sure all
items shown on the packing list are present. If items are missing,
notify Emerson immediately.
1.2 Product description
Figure 1-1: Rosemount 499ADO Sensor Parts
A. Membrane retainer
B. Membrane assembly
C. O-ring
D. Cathode
E. Electrolyte fill plug (wrap with pipe tape)
F. Pressure equalizing port
G. Sensor cable (integral cable shown)
1.3
Table 1-1: Sensor Specifications
Physical characteristics Specifications
Range 0 to 20 ppm (mg/L) as O2. For measurements at the ppb level,
Pressure 0 to 65 psig (101 to 549 kPa abs)
Temperature (operating) 32 to 122 °F (0 to 50 °C)
Process connection 1-in. male national pipe thread (MNPT)
Quick Start Guide 5
Specifications
choose Rosemount 499ATrDO.
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Quick Start Guide November 2019
Table 1-1: Sensor Specifications (continued)
Physical characteristics Specifications
Wetted parts Noryl®, Viton®, EPDM, Teflon® (TFE), and silicone
Cathode Gold (not normally wetted)
Accuracy ±0.2 ppm at 77 °F (25 °C)
Linearity 2% (typical)
Repeatability ±0.05 ppm at 77 °F (25 °C)
Response time < 30 sec to 90% of final reading (0 to 2 ppm) at 77 °F (25 °C)
Electrolyte volume 0.8 oz. (25 mL), approximately
Electrolyte life 4 to 6 months (approximately)
Cable length See Ordering information table in the Product Data Sheet for cable
Cable length (maximum) 300 ft. (91 m), up to 100 ft. (30.5 m) is standard.
Sample flow Flow through: 1 to 5 gpm (3.8 to 19 L/min)
Weight/shipping weight 1 lb./3 lb. (0.5 kg/1.5 kg)
length options.
Open channel: 1 ft./sec (0.3 m/sec)
Low flow cell: 2 to 5 gph (7.6 to 19 L/hr)
Agitation produced by bubbles in aeration basins usually provides
adequate flow.
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2 Install
Install the sensor in a flowing sample. Keep the sample flow as constant as
possible at a value within the following limits:
Sample flow unit Flow limits
Flow through 1 to 5 gpm (3.8 to 19 L/min)
Open channel 1 ft/sec (0.3 m/sec)
Low flow cell 2 to 5 gph (7.6 to 19 L/hr)
The Rosemount 499ADO sensor can be installed in ponds or basins. Use a
pipe screwed into the back-facing threads to protect the cable and keep
liquid away from the back end of the sensor. The cable end of the sensor is
not intended for submersion under liquid. See Figure 2-5. For additional
mounting hardware, see product data sheet 71-HRMS.
Figure 2-1: Sensor Orientation
Install sensor within 45 degrees of vertical.
Quick Start Guide 7
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Quick Start Guide November 2019
Figure 2-2: Flow Through 1½-in. Tee
A. Union coupler
B. 1-in. national pipe thread (NPT), two places
C. Sensor body: Rosemount 499A
D. 1-in. NPT flow cell adapter
E. O-ring 2-222
F. 1½-in. sched 80 CPVC tee body
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November 2019 Quick Start Guide
Figure 2-3: Flow Through 2-in. Tee
A. Union coupler
B. Adapter
C. 1-in. NPT (two places)
D. Sensor body: Rosemount 499A
E. O-ring 2-222
F. 2-in. sched 80 PVC tee body
Quick Start Guide 9
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Quick Start Guide November 2019
Figure 2-4: Low Flow Cell (PN 24091-00)
A. Inches
B. Millimeters
C. Outlet
D. Inlet
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November 2019 Quick Start Guide
Figure 2-5: Sensor Installed in a Stand Pipe for Submersion Applications
A. Cable
B. Pipe (supplied by others)
C. Rosemount 499ADO sensor
D. 1-in. female national pipe thread (FNPT) adapter
Quick Start Guide 11
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Quick Start Guide November 2019
3 Wire
NOTICE
For additional wiring information on this product, including sensor
combinations not shown here, please refer to the Liquid Transmitter Wiring
Diagrams.
Figure 3-1: Rosemount 499ADO Sensor Wiring to Rosemount 1056 and
56 Transmitters
Table 3-1: Rosemount 499ADO Sensor Wiring to Rosemount 1056 and 56
Transmitters
Terminal
number
1 A White Resistance temperature
2 B White/red RTD sense
3 C Red RTD in
4 D Clear RTD shield
5 N/A N/A +5 V out
6 N/A N/A -4.5 V out
7 D Clear Anode shield
8 E Gray Anode
9 D Clear Cathode shield
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Letter Wire color Description
device (RTD) return
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November 2019 Quick Start Guide
Table 3-1: Rosemount 499ADO Sensor Wiring to Rosemount 1056 and 56
Transmitters (continued)
Terminal
number
10 F Orange Cathode
Letter Wire color Description
Figure 3-2: Rosemount 499ADO Sensor Wiring to Rosemount 5081
Transmitter
Table 3-2: Rosemount 499ADO Sensor Wiring to Rosemount 5081 Transmitter
Terminal
number
1 N/A N/A N/A
2 N/A N/A +0.8 V
3 A White RTD return
Quick Start Guide 13
Letter Wire color Description
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Quick Start Guide November 2019
Table 3-2: Rosemount 499ADO Sensor Wiring to Rosemount 5081 Transmitter
(continued)
Terminal
number
4 B White/red RTD sense
5 C Red RTD in
6 N/A N/A Reference guard
7 N/A N/A Reference in
8 D Clear Solution ground
9 N/A N/A pH guard
10 N/A N/A pH in
11 N/A N/A -5 V
12 N/A N/A +5 V
13 E Gray Anode
14 F Orange Cathode
15 N/A N/A HART®/FOUNDATION™ Fieldbus
16 N/A N/A HART/FOUNDATION Fieldbus (+)
Letter Wire color Description
(-)
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November 2019 Quick Start Guide
Figure 3-3: Rosemount 499ADO Sensor Wiring to Rosemount 1066
Transmitter
Note
Connect clear shield wires to solution ground terminal on TB 2. Use wire nut
and pigtail if necessary.
Table 3-3: Rosemount 499ADO Wiring to Rosemount 1066 Transmitter
Letter Color Terminal description
A Orange Cathode
B Gray Anode
C White Return
D White/red Sense
E Red RTD in
Quick Start Guide 15
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Figure 3-4: Rosemount 499ADO Sensor Pin-out Diagram
Table 3-4: Pin-out Diagram
Terminal number Description
1 Cathode
2 N/A
3 RTD sense
4 Anode
5 RTD return
6 RTD in
When making a connection through a junction box (PN 23550-00), wire
point-to-point.
NOTICE
Use a wire nut and pigtail (included) when connecting several wires to the
same terminal.
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4 Calibrate
4.1 Zero point calibration
Even in the absence of oxygen, the sensor generates a small signal called the
zero current. Failing to correct for the zero current can introduce a bias,
particularly if the oxygen concentration is small (<1 ppm). Zero the sensor
when it is first placed in service and every time the fill solution is changed.
To zero the sensor:
Procedure
1. Pour a cup of deionized or bottled water.
2. Add a teaspoon of sodium sulfite to the water.
3. Place the sensor in the water.
4. Wait until the sensor current has reached a stable low value (at least
two hours).
5. Follow the transmitter prompts for zeroing the sensor.
Note
Refer to the manual for the transmitter you are using (Rosemount
56, 1056, 5081, or 1066).
The zero current should be <200 nA.
4.2
Quick Start Guide 17
Full scale
The best way to calibrate the sensor is to expose it to to water-saturated air.
Procedure
1. Pour a small amount of water into a cup.
2. Suspend the sensor, keeping the membrane dry, about ¼-in. (6 mm)
above the surface of the water.
3. Once readings are stable, follow the transmitter prompts to
complete the calibration.
The transmitter automatically calculates the equilibrium solubility of
atmospheric oxygen in water under the prevailing temperature and
barometric pressure.
4. After calibration, go to the Diagnostics menu and check the
sensitivity.
The sensitivity should be between 1,800 and 3,000 nA/ppm.
For more information, refer to the transmitter manual.
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Quick Start Guide November 2019
5 Maintenance
Periodic maintenance and cleaning are required for best performance of the
sensor. Generally, the membrane and fill solution should be replaced every
four to six months. Sensors installed in harsh or dirty environments require
more frequent maintenance. The optimum maintenance frequency is best
determined by experience.
WARNING
Pressurized spray injury
Before removing the sensor, be absolutely certain that the process pressure
is reduced to 0 psig and the process temperature is lowered to a safe level!
5.1 Cleaning the membrane
Keep the membrane and sensor tip clean and free from dirt. Clean the
membrane with water sprayed from a wash bottle. Use a soft tissue to
gently wipe the membrane.
5.2 Replacing the electrolyte solution and membrane
WARNING
Harmful substance
Fill solution may cause irritation. May be harmful if swallowed.
Read and follow the instructions.
Procedure
1. Unscrew the membrane retainer.
2. Remove the membrane assembly and O-ring.
See Figure 1-1.
3. Hold the sensor over a container with the cathode pointing down.
4. Remove the fill plug.
5. Allow the electrolyte solution to drain out.
6. Inspect the cathode.
a) If it is tarnished, clean it by gently rubbing in the direction of
the existing scratches (do not use a circular motion) with
400-600 grit silicon carbide finishing paper.
b) Rinse thoroughly with water.
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November 2019 Quick Start Guide
7. Remove the old pipe tape from the plug.
8. Wrap the plug with one or two turns of pipe tape..
9. Prepare a new membrane.
a) Hold the membrane assembly with the cup formed by the
membrane and membrane holder pointing up.
b) Fill the cup with electrolyte solution.
c) Leave the membrane assembly filled with electrolyte solution
and set it aside.
10. Hold the sensor at about a 45 degree angle with the cathode end
pointing up.
11. Add electrolyte solution through the fill hole until the liquid
overflows.
12. Tap the sensor near the threads to release trapped air bubbles.
13. Add more electrolyte solution if necessary.
14. Place the fill plug in the electrolyte port and begin screwing it in.
15. After several threads have engaged, rotate the sensor so that the
cathode is pointing up and continue tightening the fill plug.
Do not overtighten.
16. Place a new O-ring in the groove around the cathode post.
17. Cover the holes at the base of the cathode stem with several drops of
electrolyte solution.
18. Insert a small blunt probe, like a toothpick with the end cut off,
through the pressure equalizing port.
See Figure 1-1.
CAUTION
Equipment damage
A sharp probe may puncture the bladder and destroy the sensor.
Do not use a sharp probe.
19. Gently press the probe against the bladder several times to force
liquid through the holes at the base of the cathode stem. Keep
pressing the bladder until no air bubbles can be seen leaving the
holes.
Be sure the holes remain covered with electrolyte solution.
20. Place a drop of electrolyte solution on the cathode; then place the
membrane assembly over the cathode.
21. Screw the membrane retainer in place.
Quick Start Guide 19
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Quick Start Guide November 2019
The sensor may require several hours operating at the polarizing
voltage to equilibrate after the electrolyte solution has been
replenished.
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November 2019 Quick Start Guide
6 Accessories
Part number Description
23747-06 Interconnecting cable, Variopol (VP) 6, 2.5 ft. (0.8 m)
23747-04 Interconnecting cable, VP 6, 4 ft. (1.2 m)
23747-02 Interconnecting cable, VP 6, 10 ft. (3.0 m)
23747-07 Interconnecting cable, VP 6, 15 ft. (4.6 m)
23747-08 Interconnecting cable, VP 6, 20 ft. (6.1 m)
23747-09 Interconnecting cable, VP 6, 25 ft. (7.6 m)
23747-10 Interconnecting cable, VP 6, 30 ft. (9.1 m)
23747-03 Interconnecting cable, VP 6, 50 ft. (15.2 m)
23747-11 Interconnecting cable, VP 6, 100 ft. (30.5 m)
23567-00 1½-in. flow through tee with 1½-in. socket connections
915240-03 2-in. flow through tee with ¾-in. female national pipe
915240-04 2-in. flow through tee with 1-in. FNPT connections
915240-05 2-in. flow through tee with 1½-in. FNPT connections
24091-00 Low flow cell
9390004 Rotameter: 0.5 - 5.0 gph
11275-01 Sensor handrail mounting assembly
12707-00 Jet spray cleaner
22550-00 Junction box without preamplifier
9200266 Extension cable for option -54 cable, unprepped
9200275 Extension cable for optimum EMI/RFI cable, unprepped
23747-00 Extension cable for optimum EMI/RFI cable, prepped
9210264 Dissolved oxygen sensor fill solution, 4 oz. (125 mL)
23501-00 Dissolved oxygen membrane assembly: includes one
23502-00 Dissolved oxygen membrane assembly: includes three
33521-02 Membrane retainer
33523-03 Fill plug
thread (FNPT) connections
membrane assembly and one O-ring
membrane assemblies and three O-rings
Quick Start Guide 21
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Quick Start Guide 23
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GLOBAL HEADQUARTERS
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Shakopee, MN 55379
+1 866 347 3427
+1 952 949 7001
liquid.csc@emerson.com
*00825-0100-3491*
Quick Start Guide
00825-0100-3491, Rev. AB
November 2019
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©
2019 Emerson. All rights reserved.
The Emerson logo is a trademark and service
mark of Emerson Electric Co. Rosemount is a
mark of one of the Emerson family of companies.
All other marks are the property of their
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