Emerson Rosemount 499ATrDO Manual de usuario
Quick Start Guide
00825-0100-3493, Rev AB
November 2019
Rosemount™ 499ATrDO
Trace Dissolved Oxygen Sensor
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.
Contents
First steps.....................................................................................................................................3
Install........................................................................................................................................... 6
Wire............................................................................................................................................. 8
Calibrate.................................................................................................................................... 13
Maintenance.............................................................................................................................. 15
Accessories................................................................................................................................ 18
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2 Emerson.com/Rosemount
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 499ATrDO 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 Specifications
Table 1-1: Sensor Specifications
Physical characteristics Specifications
Range 0.1 ppb to 20 ppm
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)
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Quick Start Guide 3
Table 1-1: Sensor Specifications (continued)
Physical characteristics Specifications
Wetted parts Noryl®, Viton®, EPDM, Teflon® , and silicone
Cathode Gold (not normally wetted)
Accuracy Accuracy depends on the accuracy of the chemical test used to
calibrate the sensor.
Linearity ±5% of reading or ±3 ppb (whichever is greater) at 77 °F (25 °C)
Repeatability ±2% of reading at constant temperature
Response time < 20 sec to 90% of final reading at 77 °F (25 °C) (0 to 200 ppb
oxygen)
Membrane permeability
connection
Defined between 32 and 122 °F (0 and 50 °C)
Electrolyte volume 0.8 oz. (25 mL), approximately
Electrolyte life 4 to 6 months (approximately)
Sensor life 2 years (approximately)
Accuracy at 77 °F (25 °C)
following air calibration
<20 ppb: ±1 ppb
>20 ppb: ±5% of reading
Cable length See Ordering information table in the Product Data Sheet for cable
length options.
Cable length (maximum) 300 ft. (91 m), up to 100 ft. (30.5 m) is standard.
Drift <4% over 60 days
Sample flow 1.6-6.3 gph (100-400 mL/min) recommended. Response changes
less than 2% when flow is maintained at recommended range. At
0.8 gph (50 mL/min), sensor response is about 90% of value at 100
mL/min.
Comedown time to 1 ppb New sensor: < 5 hours
Following membrane change: < 1 hour
Following air calibration: < 1 hour
Shelf life 3 months. If the shelf life has been exceeded, the sensor can still be
used. The comedown time will be longer.
Weight/shipping weight 1 lb./3 lb. (0.5 kg/1.5 kg)
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4 Emerson.com/Rosemount
Table 1-2: Other Specifications
Type PN Wetted
materials
Process
connection
Maximum
temperature
Maximum
pressure
Low flow
cell (1)
24091-00 and
24091-01
Polycarbon-
ate/
polyester,
316 stainless
steel, and
silicone
Compression
fitting for
¼-in. O.D.
tubing or
¼-in. female
national pipe
thread (FNPT)
158 °F (70 °C) 90 psig
(722 kPa abs)
(1) Temperature and pressure specifications for the low flow cell exceed the temperature and
pressure specifications for the sensor.
November 2019 Quick Start Guide
Quick Start Guide 5
2 Install
The gray PVC cap contains a solution of sodium sulfite. Remove the cap
before installing the sensor.
WARNING
Poisonous substance
The cap contains sodium sulfite solution.
Avoid contact with skin or eyes.
Do not swallow!
Figure 2-1: Sensor Orientation
Install sensor within 45 degrees of vertical.
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Figure 2-2: Low Flow Cell (PN 24091-00)
A. Inches
B. Millimeters
C. Outlet
D. Inlet
November 2019 Quick Start Guide
Quick Start Guide 7
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 499ATrDO Sensor Wiring to Rosemount 1056
and 56 Transmitters
Table 3-1: Rosemount 499ATrDO Sensor Wiring to Rosemount 1056 and 56
Transmitters
Terminal
number
Letter Wire color Description
1 A White Resistance temperature
device (RTD) return
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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8 Emerson.com/Rosemount
Table 3-1: Rosemount 499ATrDO Sensor Wiring to Rosemount 1056 and 56
Transmitters (continued)
Terminal
number
Letter Wire color Description
10 F Orange Cathode
Figure 3-2: Rosemount 499ATrDO Sensor Wiring to Rosemount 5081
Transmitter
Table 3-2: Rosemount 499ATrDO Sensor Wiring to Rosemount 5081 Transmitter
Terminal
number
Letter Wire color Description
1 N/A N/A N/A
2 N/A N/A +0.8 V
3 A White RTD return
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Quick Start Guide 9
Table 3-2: Rosemount 499ATrDO Sensor Wiring to Rosemount 5081 Transmitter
(continued)
Terminal
number
Letter Wire color Description
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 (+)
Quick Start Guide November 2019
10 Emerson.com/Rosemount
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