MODEL 396/396VP/397/398/398VP
SECTION 1.0
DESCRIPTIONS AND SPECIFICATIONS
1
SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
1.1 TUpH™ FEATURES AND APPLICATIONS.
Rosemount Analytical has achieved a new industry
standard for the life expectancy of pH sensors with
the TUpH Sensors. The low maintenance, disposable
Models 396, 396VP, 397, 398, and 398VP TUpH
Sensors offer long life and high performance in the
measurement of pH in aqueous solutions in
pipelines, open tanks, or ponds. These TUpH sen-
sors feature a patented, large area reference junc-
tion1 for maximum resistance to process coatings,
generally found in dirty, high solid applications. In
addition, the secondary helical reference pathway2
serves as added protection from poisoning ions. The
simplified construction, designed with user conven-
ience in mind, does not require electrolyte replenish-
ment or any component replacement. All models fea-
ture a large glass bulb for increased resistance to the
effects of aging for longer life. All models are avail-
able only without an integral preamplifier. The pream-
plifier must be in a remote location or integral to the
analyzer/transmitter. Models with a “VP” after the
model number indicate the variopol connector is
used on the sensor in place of the cable. In this case,
a separate cable with a mating VP connector must be
used. All models are compatible with all Rosemount
Analytical and most manufacturers instruments.
1.1.1 Model 396 and 396VP TUpH
Features and Applications.
The Models 396 and 396VP
TUpH sensors are construct-
ed of polypropylene and
stainless steel and is com-
pletely sealed by EP (ethyl-
ene propylene) to eliminate
process intrusion. It is specifi-
cally designed for improved life in harsh, dirty appli-
cations such as lime slurry waste treatment and paper
machine headbox and pigment/dye applications
where large quantities of suspended solids are pres-
ent. Installation is easily achieved through a wide vari-
ety of mounting configurations. The Model 396 fea-
tures an optional front or rear 1 in. MNPT process con-
nection for insertion, submersion, or flow through
applications.
1.1.2 Model 397 TUpH and
Quik-Loc Features and
Applications.
The Model 397 is
housed in a highly chemical
resistant polypropylene body
and completely sealed with EP
to eliminate process intrusion.
The Model 397 body is specifically designed for use
with the Quik-Loc Kit which consists of an adapter and
coupler. The PEEK (polyetheretherketone) adapter
enables the Model 397 sensor to fit into a 1 in. MNPT
Twin-Kam® 4 Kamloc® 4 coupler for quick and easy
removal without sensor cable twisting. The 316 stain-
less steel Twin-Kam® Kamloc® coupler is sealed with
EP and features “vibration resistant”5 arms. The Quik-
Loc Kit is not recommended for use in processes with
hazardous, corrosive, or strong oxidizing chemicals
due to a risk of spray and bodily hazards.
1.1.3 Model 398 and 398VP TUpH
Features and Applications.
The chemical-resistant con-
struction of Tefzel, titanium,
and the patented TUpH refer-
ence junction make the
Models 398 and 398VP the
ideal sensors for measuring
pH in harsh process liquids.
Use Model 398 or 398VP to measure pH in sour water
strippers, in pulp bleaching towers that use chlorine
dioxide, and in process streams containing a variety
of organic solvents.
Models 398 and 398VP use the highest quality mate-
rials to provide superior chemical resistance. The sen-
sors are housed in a titanium tube and features an
optional 1 inch MNPT process connector for insertion,
submersion, or flow-through applications. The molded
Tefzel TUpH construction is offered with a choice of
seals (Viton, EPDM, or Kalrez). Combining high qual-
ity materials with the TUpH reference technology and
A
CCU
G
LASS
pH bulb allows for ultimate chemical
resistance and makes Models 398 and 398VP the per-
fect choice for measuring pH in harsh, demanding
processes.
1 May be Protected by U.S. Patent No. 5, 152, 882, Foreign Patent Pending
2 Protected by U.S. Patent No. 6, 054, 031, Foreign Patent Pending
3 A
CCU
G
LASS
is a registered trademark of Rosemount Analytical
4 Kamlok® and Twin-Kam® are registered trademarks of CIVACON
5 CIVACON catalog, Kam-92 (REV. May, 1992)
Summary of Contents for 396
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