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Product Data Sheet
Rosemount™ 398/398VP/398R/398RVP
TUpH pH/ORP Sensors
June 2017
LIQ-PDS-398
TUpH Sensors for Your Tough pH/ORP Applications
Rosemount 398/398VP/398R/398RVP TUpH pH sensors are robust sensors designed to meet a number of difficult application
requirements. Sensors feature a variety of options suited to meet a number of installation requirements and are ideal for use in dirty,
abrasive, coating, and high solid applications containing chlorine dioxide.
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Overview
A TUpH Sensor Design
Coating and fouling resistant with large surface area TUpH
reference junction.
Titanium and Tefzel sensor construction for superior chemical
resistance to aggressive chemicals such as chlorine dioxide in
pulp bleaching towers and most organic solvents.
Selectable O-ring options of either EPDM, Viton, or Kalrez.
Optional flat pH glass electrode for abrasive and coating
applications.
Operates in process pressures up to 250 psig.
Versatile Installation Options
Suitable for insertion/submersion type installations
(Rosemount 398/398VP).
Retractable design allows sensors to be removed for
calibration and maintenance without process shutdown
(Rosemount 398R/398RVP).
Compatible for use with a 1-1/2 in. or 1-1/4 in. ball valve
(Rosemount 398R/398RVP).
Variopol (VP8) cable connection option, for quick
cable-to-sensor release, eliminates cable twisting.
June 2017
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2
Dimensional and Installation Drawings . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
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June 2017
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Ordering Information
Rosemount 398/398VP sensors are housed in a titanium tube and constructed with a
Tefzel reference junction. Sensors can be used with a 1 inch MNPT process connector
(sold separately). Rosemount 398 sensors come standard with 15 ft. of integral cable.
Rosemount 398VP sensors are used with quick disconnect VP8 interconnecting cables
(sold separately).
Table 1. Rosemount 398 TUpH pH/ORP Sensor ordering information
Model Sensor type
398 pH/ORP sensor
Measuring Electrode
10 pH – GPHT Hemi Bulb Glass
12 ORP
13 pH – GPLR Flat Glass
O-ring Material
30 EPDM
31 Viton
32 Kalrez
Temperature Element
50 3k Balco
54 Pt-100
(1)
(2)
Cable Options
_ No Selection - Cable with BNC
62 Cable without BNC
(3)
Typical Model Number: 398-10-32-54-62
1. For use with legacy transmitter model Rosemount 1181. Not available with option -62.
2. For use with existing transmitter models Rosemount 1056, 1057, 56, 1066, and 5081. Also compatible with legacy transmitter models 54, 1054, 1055, 6081, 81,
2081, 3081, 4081, and XMT.
3. For use with existing transmitter models Rosemount 1056, 1057, 56, 1066, and 5081. Only available with option -54.
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Table 2. Rosemount 398VP TUpH pH/ORP Sensor ordering information
Model Sensor type
398VP pH/ORP sensor
Measuring Electrode
10 pH - GPHT Hemi Bulb Glass
12
13
O-ring Material
30 EPDM
31 Viton
32 Kalrez
Temperature Element
50 3k Balco
54 Pt-100
ORP
pH - GPLR Flat Glass
(1)
(2)
June 2017
Typical model number: 398VP-10-30-54
1. For use with legacy transmitter model Rosemount 1181.
2. For use with existing transmitter models Rosemount 1056, 1057, 56, 1066, and 5081. Also compatible with legacy transmitter models 54, 1054, 1055, 6081, 81,
2081, 3081, 4081, and XMT.
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June 2017
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Rosemount 398R/398RVP sensors are offered in 21 inch and 36 inch titanium tube
sensor lengths. Sensors can be used with a ball valve (sold separately) for hot tap
applications. Rosemount 398 sensors come standard with 15 ft. of integral or 9.5 in.
cable for use with a sensor head junction box (sold separately). Rosemount 398RVP
sensors are SMART preamplifier optional and are used with quick disconnect VP8
interconnecting cables (sold separately).
Table 3. Rosemount 398R TUpH pH/ORP Sensor ordering information
Model Sensor type
398R pH/ORP sensor
Cell constant
10 pH - GPHT Hemi Bulb Glass
12
ORP
13
pH - GPHT Flat Glass
O-ring Material
30 EPDM
31 Viton
32 Kalrez
Temperature Element
54 Pt-100
Cable Options
_ No Selection - 15 ft. Cable with BNC
60 9.5 inch Cable with BNC
61 9.5 inch Cable without BNC
62 15 ft. Cable without BNC
(1)
(1)
(2)
Typical Model Number: 398R-10-31-54-62
1. For use with sensor head junction boxes.
2. For use with existing transmitter models Rosemount 1056, 1057, 56, 1066, and 5081. Also compatible with legacy transmitter models 1055, 54e, 81, 3081, 4081,
and XMT.
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Table 4. Rosemount 398RVP TUpH pH/ORP Sensor ordering information
Model Sensor type
398RVP pH/ORP sensor
Measuring Electrode
10 pH - GPHT Hemi Bulb Glass
12
ORP
June 2017
13
pH - GPHT Flat Glass
Sensor Length
21 21 in. Titanium Tube
25 36 in. Titanium Tube
O-ring Material
30 EPDM
31 Viton
32 Kalrez
Temperature Element
50 3k Balco
54 Pt-100
55 Pt-100
(1)
(2)
(3)
Preamplifier
_ No Selection - No Preamplifier
70 SMART Preamplifier
(4)
Typical Model Number: 398RVP-10-25-32-55-70
1. For use with legacy transmitter model Rosemount 1181.
2. For use with existing transmitter models Rosemount 1056, 1057, 56, 1066, and 5081. Also compatible with legacy transmitter models 54, 1054, 1055, 6081, 81,
2081, 3081, 4081, and XMT. Not available with option -70.
3. For use with existing transmitter models Rosemount 1056, 1057, 56, 1066, and 5081. Also compatible with legacy transmitter models 54, 1054, 1055, 6081, 81,
2081, 3081, 4081, and XMT. Only available for pH sensors with option -70.
4. Only available for pH sensors with option -55.
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June 2017
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Specifications
Table 5. Percent Linearity Over pH Ranges
pH Range Hemi Bulb Flat Bulb
0 to 2 pH 94% 93%
2 to 12 pH 99% 98%
12 to 13 pH 97% 95%
13 to 14 pH 92% _
Table 6. Rosemount 398/398VP/398R/398RVP sensor specifications
Sensor Model 398 398VP 398R 398RVP
Measurements and Ranges
Wetted Materials Titanium, Tefzel, glass, and a choice of Kalrez, Viton, or EPDM; platinum for ORP only
None; Must use 1 inch NPT process
Process Connection
Temperature Range 32 to 212°F (0 to 100°C)
Pressure Range - Hemi Bulb 0 to 250 psig (100 to 1825 kPa [abs])
Pressure Range - Flat Bulb 0 to 100 psig (100 to 790 kPa [abs])
Maximum Pressure at
Retraction or Insertion
Minimum Conductivity 75 μS/cm, nominal 100 μS/cm
Weight/Shipping Weight 0.45 kg/0.9 kg (1 lb/2 lbs)
connector PN 23166-00 or 23166-01 (sold
separately)
N/A N/A
pH: 0 to 14
ORP: -1500 to +1500 mV
None; Must use 1 inch NPT process connector or
ball valve kit (1-1/2 in. or 1-1/4 in.) (sold separately)
Option 21: 64 psig (542 kPa [abs])
Option 25: 35 psig (343 kPa [abs])
Option 21 Sensors: 0.9 kg/1.40 kg (2.0 lbs/3.0 lbs)
Option 25 Sensors: 1.40 kg/1 .80 kg (3.0 lbs/4.0 lb s)
Ball Valve Kits: 2.25 kg/3.20 kg (5.0 lbs/7.0 lbs)
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Dimensional and Installation Drawings
Figure 1. Typical Mounting Details - Rosemount 398R Retraction Version
June 2017
Figure 2. Recommended Flow-Through and Insertion Installation for Rosemount 398
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June 2017
Figure 3. Insertion Installations for Rosemount 398
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Figure 4. Rosemount 398 Insertion/Submersion Sensor Dimensional Drawing
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Figure 5. Submersion Installations for Rosemount 398
June 2017
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June 2017
Figure 6. Rosemount 398R with and without Optional Ball Valve PN 23765-00 Dimensional Drawing
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Figure 7. Rosemount 398R with and without 1-1/2 in. Ball Valve PN 23240-00 Dimensional Drawing
June 2017
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June 2017
Figure 8. Rosemount 396VP and 398VP with Process Connector Dimensional Drawing
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Figure 9. Typical Flow Thru and Insertion Mounting Configurations for Rosemount 396VP and 398VP
June 2017
Figure 10. Rosemount 396RVP and 398RVP with Optional 1-1/2 in. Ball Valve PN 23240-00 Dimensional Drawing
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June 2017
Figure 11. Typical Submersion Installations for Rosemount 396VP and 398VP
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Figure 12. Rosemount 396RVP and 398RVP with Optional 1-1/4 in. Ball Valve PN 23765-00 Dimensional Drawing
June 2017
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June 2017
Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
Accessories
Table 7. Rosemount 398/398VP/398R/398RVP Sensor accessories information
Part number Description
23166-00 1 inch MNPT Process Connector, Stainless Steel with EPDM O-ring
23166-01 1 inch MNPT Process Connector, Titanium with EPDM O-ring
9510066 1 inch MNPT Process Connector, Nylon
9550220 Process Connector O-ring, Kalrez
9550099 Process Connector O-ring, Viton
23240-00 1-1/2 inch Ball Valve Assembly, 316 SS (Process Connector Required)
23765-00 1-1/4 inch Ball Valve Assembly, 316 SS
23555-00 Junction Box with Preamplifier
2002565 Mounting Bracket Kit for Junction Box
23646-01 Extension Cable for Junction Box, Shielded, Prepped
9200273 Extension Cable for Junction Box, Shielded, Unprepped
11275-01 Handrail Mounting Assembly
915240-03 PVC Flow Through Tee, 3/4 inch NPT Process Connection
915240-04 PVC Flow Through Tee, 1 inch NPT Process Connection
915240-05 PVC Flow Through Tee, 1-1/2 inch Process Connection
2002011 CPVC Flow Through Tee, 1-1/2 inch NPT Process Connection
24091-00 Low Flow Cell
9210012 4.01 pH Buffer Solution, 16 oz
9210013 6.86 pH Buffer Solution, 16 oz
9210014 9.18 pH Buffer Solution, 16 oz
R508-8OZ 475 mV ORP Standard, 8 oz
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Rosemount 398/398VP/398R/398RVP TUpH pH/ORP Sensors
LIQ-PDS-398
Global Headquarters
Emerson Automation Solutions
8200 Market Blvd
Chanhassen, MN 55317
+1 800 999 9307 or +1 952 906 8888
+1 952 949 7001
Liquid.CSC@Emerson.com
North America Regional Office
Emerson Automation Solutions
8200 Market Blvd.
Chanhassen, MN 55317, USA
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Emerson Automation Solutions
1300 Concord Terrace, Suite 400
Sunrise, FL 33323, USA
+1 954 846 5030
+1 954 846 5121
RFQ.RMD-RCC@Emerson.com
Product Data Sheet
June 2017
Europe Regional Office
Emerson Automation Solutions GmbH
Neuhofstrasse 19a P.O. Box 1046
CH 6340 Baar
Switzerland
+41 (0) 41 768 6111
+41 (0) 41 768 6300
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