Rosemount Analytical 398, 398VP Data sheet
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.
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.
4
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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.
6
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