Rosemount Analytical 499 Operating Manual
Rosemount™ 499ATrDO
Trace Dissolved Oxygen Sensor
Quick Start Guide
LIQ-QSG-499ATrDO, Rev H
July 2017
Safety information
CAUTION!
SENSOR/PROCESS APPLICATION COMPATIBILITY
The wetted sensor material may not be compatible with process composition and operating conditions. Application compatibility is
entirely your 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)
Contents
Contents
Chapter 1 Plan ..................................................................................................................................1
1.1 Unpacking and inspection .............................................................................................................. 1
1.2 Product description ........................................................................................................................1
1.3 Specifications .................................................................................................................................1
Chapter 2 Install ...............................................................................................................................5
Chapter 3 Wire .................................................................................................................................7
Chapter 4 Calibrate ........................................................................................................................ 15
4.1 Zero point calibration ...................................................................................................................15
4.2 Full scale .......................................................................................................................................15
Chapter 5 Maintenance .................................................................................................................. 17
5.1 Cleaning the membrane ...............................................................................................................17
5.2 Replacing the electrolyte solution and membrane ....................................................................... 17
5.3 Storage ........................................................................................................................................ 19
Chapter 6 Accessories .................................................................................................................... 21
Quick Start Guide i
Contents
ii Rosemount 499ATrDO
1 Plan
1.1 Unpacking and inspection
1. Inspect the shipping container. If it is damaged, contact the shipper immediately for
instructions.
2. Save the box.
3. 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 Rosemount immediately.
1.2 Product description
Rosemount 499ATrDO Sensor PartsFigure 1-1:
Plan
A. Membrane retainer
Membrane assembly
B.
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
Sensor specificationsTable 1-1:
Physical characteristics Specifications
Range 0.1 ppb to 20 ppm
Pressure 0 to 65 psig (101 to 549 kPa abs)
Temperature (operating) 0 to 50 °C (32 to 122 °F)
Quick Start Guide 1
Plan
Sensor specifications (continued)Table 1-1:
Physical characteristics Specifications
Process connection 1 in. MNPT
®
Wetted parts Noryl
(1)
, Viton, EPDM, Teflon®
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 25 °C (77 °F) (0 to 200 ppb
oxygen)
Membrane permeability connection Defined between 41 and 95 °F (0 and 50 °C)
Process connection 1 in. MNPT
Electrolyte volume 25 mL (approx.)
Electrolyte life 4 to 6 months (approx.)
Sensor life 2 years (approx.)
Accuracy at 77 °F (25 °C) following air calibration
<20 ppb ±1 ppb
>20 ppb ±5% of reading
(2)
, and silicone
Cable length (standard integral cable) 25 ft (7.6 m)
Cable length (maximum) 300 ft (91 m)
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.
Process connections Sensor must be used in flow cell PN 24091-01
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 (0.5kg /1.5 kg)
(1) Noryl is a registered trademark of General Electric.
(2) Viton and Teflon are registered trademarks of E.I. duPoint de Nemours & Co.
2 Rosemount 499ATrDO
Other specificationsTable 1-2:
Maximum tempera-
Type PN Wetted materials Process connection
Low
flow
cell
(1) Temperature and pressure specifications for the low flow cell exceed the temperature and pressure specifications for the sensor.
24091-00 Polycarbonate/poly-
ester, 316 stainless
(1)
steel, and silicone
Compression fitting
for 1/4 in. O.D. tubing
or 1/4 in. FNPT
ture Maximum pressure
158 °F (70 °C) 90 psig (722 kPa abs)
Plan
Quick Start Guide 3
Plan
4 Rosemount 499ATrDO
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!
Install
Sensor OrientationFigure 2-1:
Quick Start Guide 5
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