Emerson Rosemount RBI pH Quick Start Guide
Quick Start Guide
00825-0100-3008, Rev AB
Rosemount™ RBI pH/ORP Sensors
September 2020
Quick Start Guide September 2020
Safety information
WARNING
Hot surface
Before removing the sensor, be absolutely certain that the process pressure is reduced to 0 psig and
the process temperature is lowered to a safe level.
WARNING
Corrosive substance
The solution used during calibration is an acid.
Handle with care.
Follow the directions of the acid manufacturer.
Wear proper protective equipment.
Do not let the solution come in contact with skin or clothing.
If contact with skin is made, immediately rinse with clean water.
CAUTION
Application compatiblity
The wetted sensor materials may not be compatible with process composition and operating
conditions.
Application compatibility is entirely the operator's responsibility.
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
Overview......................................................................................................................................3
Installation................................................................................................................................... 5
Startup.......................................................................................................................................22
Accessories................................................................................................................................ 23
2 Emerson.com/Rosemount
September 2020 Quick Start Guide
1 Overview
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 Specifications
Rosemount RBI pH/ORP Sensor Specifications
Measurement range
Wetted materials
Maximum
temperature
Maximum pressure
Maximum insertion
pressure (option 547)
Maximum retraction
pressure (option 547)
Process connection
pH: 0 to 14
ORP: -1500 to +1500 mV
Kynar®, titanium (retractable 547 only), porous
PTFE, wood, glass, and choice of EPDM, Viton®,
or Kalrez
248 °F (120 °C) at 40 psig (276 kPa [abs])
150 psig (1,035 kPa [abs]) at 158 °F (70 °C)
65 psig (448 kPa [abs] at 158 °F (70 °C)
40 psig (276 kPa [abs]) at 248 °F (120 °C)
Body type 546: Forward and rear facing ¾-in.
MNPT
Body type 547: None, requires user-supplied 1in. MNPT process fitting or ball valve set.
1.3 Storage and maintenance
Sensors require little care or maintenance. Simple guidelines follow:
During storage, keep sensors near room temperature and capped on the
measuring end. These caps supplied from the factory are filled with a weak
pH 7 buffer in order to keep the sensor wet. Check sensors in storage semiannually to assure that the cap retains moisture; if the pH 7 buffer
evaporates, replace it with ordinary tap water.
®
Quick Start Guide 3
Quick Start Guide September 2020
Cleaning the pH sensor is easy. The reference usually does not require
maintenance. If a coating forms over the exposed portion of the reference,
scrape it off with a small penknife. Take care not to break the glass when
scraping the reference.
Glass pH electrodes can be cleaned in a number of ways. To remove scaling,
oils, and other stubborn coatings, soak the electrode in a five to ten percent
HCl solution for a few minutes and then rinse it under tap water. Very heavy
coatings may require more than one soaking. To clean minor coatings,
direct a stream of tap water directly onto the glass. With new sensors, wipe
the glass with a clean, soft cloth. Take care with this approach as the glass
may break when mishandled.
Oils or greases that can accumulate on the glass bulb may not be visible to
the eye. To remove these, stir the sensor in a solvent such as isopropyl
alcohol. Heavy build-up may require a number of alcohol cycles followed by
wiping with a soft cloth. You may also use a dish soap.
Run sensor cables through the conduit or protect them from the
environment; they are not weather-proof. Do not allow cables and
connectors to become wet, lay on the ground or across equipment, etc. Do
not abrade, pinch, twist, or sharply bend cables.
4 Emerson.com/Rosemount
September 2020 Quick Start Guide
2 Installation
2.1 RBI 546 Installation
Figure 2-1: In-Line Submersion Option 546 with Integral Cable
Connection
A. Measuring electrode: choice of ruggedized hemi glass, ruggedized flat
glass, or flat platinum ORP (non-glass)
Reference junction: PTFE junction flat and flash or PTFE junction with
notched glass protection
B. L - insertion depth (see Table 2-1)
C. Kynar® body
D. ¾-in. MNPT
E. ⅞-in. wrench flats
Table 2-1: Insertion Depth
Option L
05 0.5-in. (12.7 mm)
10 1.0-in. (25.4 mm)
15 1.5-in. (38 mm)
Quick Start Guide 5
Quick Start Guide September 2020
Figure 2-2: In-Line Submersion Option 546 with Variopol Cable
Connection
A. Insertion depth (see Table 2-2)
B. ⅞-in. flats
C. 8-in. cable
D. VP8 male connector
E. ¼-in. cable
F. ¾-in. MNPT thread
Table 2-2: Insertion Depth
Option L
05 0.5-in. (12.7 mm)
10 1.0-in. (25.4 mm)
15 1.5-in. (38 mm)
Procedure
1. For integral cable sensors, reference Figure 2-1-dimension B to select
appropriate mounting nozzle or pipe tee dimensions to achieve
desired insertion depth.
2. For VP sensors, reference Figure 2-2-dimension B to select
appropriate mounting nozzle or pipe tee dimensions to achieve
desired insertion depth.
3. Wrap the sensor threads (D) with PTFE tape to prevent leakage.
a) Use front facing threads for insertion installations in a pipe
tee/process nozzle.
b) Use rear facing threads for submersion installations threaded
into conduit.
4. Do not overtighten sensor into its receptacle.
5. Hand tighten the sensor, then tighten one or two turns with a
wrench to secure in place.
6 Emerson.com/Rosemount
September 2020 Quick Start Guide
2.2 RBI 547 installation
Figure 2-3: Titanium Sheath Dimensions (for 547 Option)
A. A length (see Table 2-3)
B. B length (see Table 2-3)
C. O-rings (see Table 2-3)
D. O-ring material I.D. (V = Viton®, E = EPDM, K = Kalrez®)
E. ¾-in. MNPT
F. Sheath material I.D. (T = titanium, H = Hastelloy C)
G. Extension Kynar
H. Swage
I. Titanium sheath
Table 2-3: Titanium Sheath Dimensions (for 547 Option)
Part number Sheath
materials
RB5104-0058E T E 7-in. (177.8 mm) 1.9-in. (48.3 mm)
RB5104-0078E H E
RB5104-0120E T E 19-in. (482.6 mm) 13.9-in. (353.1
RB5104-0120V T V
RB5104-0320E H E
RB5104-0320K H K
RB5104-0136E T E 35-in. (889 mm) 29.9-in. (759.5
RB5104-0336E H E
Quick Start Guide 7
O-ring
materials
A length B length
mm)
mm)
Quick Start Guide September 2020
Figure 2-4: Retractable Body Type Sensor (547) with Integral Cable
Connection and Sheath
Shown with 20-in. (508 mm) sheath (RB5104-0120E/RB5104-0120V/
RB5104-0320E)
A. Blowout safety stop
B. Fitting sold separately
C. 1.00-in. (25.4 mm) diameter
D. ¾-in NPT thread
E. Kynar® extension
F. O-rings
G. Sensor sheath
H. Sensor cartridge
8 Emerson.com/Rosemount
Loading...