High performance pH/ORP measurements for your harsh applications
The Rosemount RBI pH/ORP Sensor features a multi-junction reference design, making it ideal for use in tough applications containing sulfides and other poisoning ions. The sensor is offered with various
configurations to meet a wide variety of installation requirements.
Ordering information
The Rosemount RBI pH/ORP sensor is built with a Kynar® body and is available with two configurations: a ¾-in. male national pipe thread (MNPT) in-line/submersion version allows the sensor to be used in pipe tees or to be submersed in a tank, and a retractable version allows variable installation through a ball valve.
High performance and robust design
. Superior chemical resistance provided by a rugged Kynar body and
selectable O-ring materials (EPDM, Viton®, or Kalrez™). . High pressure rating up to 150 psig (1,035 kPa).
. Maximize sensor life with multi-junction reference.
Ease of installation
. The in-line/submersion body features ¾-in. NPT front and rear facing process connections for direct installation into a process sample line or connection to a ¾-in. FNPT coupling extension pipe for
submersion.
Online Product Configurator
Many of our innovative products can be effortlessly tailored to your specific needs through our state-of-the-art Product Configurator. Simply select the Configure button or visit our website to begin your configuration journey. With this cutting-edge tool's built-in logic and consistent validation, you are empowered to configure your products faster and with greater precision.

Model
Code |
Description |
RBI |
pH/ORP Sensor |
Measurement type/electrode
A10 and A11 are equipped with a PT100 resistance temperature device (RTD) for optimal temperature compensation. Note that B10 does not offer temperature compensation.
Code |
Description |
A10 |
pH-ruggedized hemi-glass (0-14 pH) |
A11 |
pH-ruggedized flat glass (1-14 pH) |
B10 |
Platinum ORP |
Tip configuration
Code |
Description |
D1 |
Dual notched PTFE junction, tip protection |
F1 |
Flush, PTFE junction, no tip protection |
Body type
Code |
Description |
546 |
¾-in. male national pipe thread (MNPT) in-line/submersion |
547 |
Retractable(1) |
(1) Sheath must be ordered separately (seee Accessories).
Body option
Code |
Description |
S1 |
Standard body |
Insertion depth
00 is exclusively available with the retractable body type option (547). Depths 05, 10, and 15 are exclusively available with a ¾-in. male national pipe thread (MNPT) for in-line/submersion body type option (546).
|
10 |
1.0-in. (25.4 mm) |
15 |
1.5-in. (38.1 mm) |
O-ring
Code |
Description |
E |
EPDM |
V |
Viton® ETP |
K |
Kalrez® |
Cable configuration
Code |
Description |
15 |
15 ft. (4.6 m) cable |
30 |
30 ft. (9.1 m) cable |
VP(1) |
Variopol connection(2) |
(1) Not compatible with 36-in. (914.4 mm) or longer RBI-547 retraction sheathes
(2) VP8 cables must be sold separately (see Accessories).
Lead termination
Code |
Description |
T2 |
All tinned leads |
NL |
No leads (use VP8 connection) |
Specifications
Rosemount RBI pH/ORP Sensor Specifications
Measurement range |
pH: 0 to 14 ORP: -1500 to +1500 mV |
Wetted materials |
Kynar®, titanium (retractable 547 only), porous PTFE, wood, glass, and choice of EPDM, Viton®, or Kalrez® |
Maximum temperature |
248 °F (120 °C) at 40 psig (276 kPa [abs]) |
Maximum pressure |
150 psig (1,035 kPa [abs]) at 158 °F (70 °C) |
Maximum insertion pressure (option 547) |
65 psig (448 kPa [abs] at 158 °F (70 °C) |
Maximum retraction pressure (option 547) |
40 psig (276 kPa [abs]) at 248 °F (120 °C) |
Process connection |
Body type 546: Forward and rear facing ¾-in. MNPT Body type 547: None, requires user-supplied 1-in. MNPT process fitting or ball valve set. |
Company Profile
Cold Valley Intelligent Technology (Shanghai) Co., Ltd. is a cornerstone of innovation and excellence, firmly embedded within the Hanshan (Cold Mountain) Intelligent Technology Co. family. As a trailblazer in transformative technologies, we are proud to uphold a legacy of pioneering advancements.
Nestled in the bustling metropolis of Shanghai since 2013, we are at the forefront of a technological renaissance, driving forward groundbreaking innovations as an integral part of the Hanshan Intelligent Technology Co., Ltd. Group.
Our founding vision, crafted by a distinguished team of industry veterans hailing from leading global automation giants, encompasses over 20 years of rich industry expertise, more than two decades immersed in automation engineering, and a decade of profound experience in consulting and deploying state-of-the-art digital solutions. Our steadfast mission propels us to deliver unparalleled automation and digitization products and services worldwide. Elegantly situated in Shanghai, China, we illuminate the global stage as a beacon of technological prowess.
With an enduring legacy spanning over two decades in the petrochemical sector, our unmatched expertise confidently addresses the automation and digitalization demands across the vast industry spectrum-upstream, midstream, and downstream. Our curated offerings, including premium products and comprehensive solutions, are meticulously engineered for petroleum, chemical, electric power, biomedicine, APIs, food and beverage, liquor, metallurgy, and non-ferrous metal industries, guaranteeing exceptional service throughout each product's lifecycle.






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A: Upon receiving your inquiry, our extensive technical repository will provide you with all the critical insights required. This detailed documentation allows you to carefully evaluate the process parameters and technical specifications pertinent to your needs. From this comprehensive data, we will expertly recommend the model that seamlessly aligns with your specific requirements.
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A: Absolutely. Once you express a preference for a specific model, we will conduct a thorough verification to ensure its impeccable suitability. Should there be opportunities for cost-efficient enhancements, we will eagerly present suggestions for optimization. Upon your approval, we will proceed to develop a formal quotation, meticulously tailored to meet your expectations.