construction, designed with user convenience in mind,
does not require electrolyte (KCl) replenishment or any
high maintenance troubleshooting procedures.
The Model 396P is offered with or without an optional
integral preamplifier to convert the high impedance pH
or ORP mV signal into a stable, noise-free signal with
transmission capability of up to three miles. A remote
preamplifier must be used with Model 396PVP.
Installation is easily achieved through the wide variety
of mounting configurations. The Models 396P and
396PVP feature 1 in. (MNPT) front and rear facing con-
nections for insertion, submersion or flow through pH
and ORP applications.
Model 396PVP is offered with a watertight sensor-to-
cable connector which eliminates re-wiring and cable
twisting when replacing sensors. The Variopol VP mul-
tiple pin connector is an integral part of each sensor
model and uses a mating VP cable. Once the cable is
installed and wired to the analyzer, sensors are easily
replaced without replacing the cable, and, if the
replacement sensor is the same as its predecessor,
without rewiring the analyzer. Also the cable can be
disconnected from the sensor before removal from
the process which eliminates cable twisting.
U.S. Patent No. 5,152,882 Foreign Patent Pending
U.S. Patent No. 6,054,031, Foreign Patents Pending.
1 AccuGlass is a trademark of Rosemount Analytical.
1
MODEL 396P and 396PVP
SECTION 1.0
DESCRIPTIONS AND SPECIFICATIONS
SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
1.1 FEATURES AND APPLICATIONS
The Rosemount Analytical Model 396P and 396PVP
Sensors measure the pH or the ORP of aqueous solu-
tions in pipelines, open tanks, or ponds. It is designed
for harsh, dirty applications such as sourwater waste
treatment and scrubbers, where a high performance,
low maintenance, disposable sensor is required.
The combination electrode features a patented, large
area polypropylene reference junction for resistance to
process coatings, generally found in dirty, high solid
applications. The patented helical reference pathway
provides added resistance for poisoning applications.
In addition, it is available in two configurations:
glass/platinum electrode completely recessed within
the reference junction for added life in abrasive or
rough applications and the glass/platinum electrode
partially exposed for added life and accuracy in vis-
cous and low flow applications.
Both Models feature a titanium solution ground con-
structed in an annular design around the pH/ORP elec-
trode. The solution ground provides glass and refer-
ence sensor diagnostics for preventative maintenance
when used with the Model 54, 1055, 3081, 4081, and
81 pH/ORP transmitters. In addition Models 396P and
396PVP can be used with most non-diagnostic
Rosemount Analytical and other manufacturer’s instru-
ments.
Each sensor is housed in a molded polypropylene
body with EPDM seals, making it virtually indestructi-
ble and chemically resistant. Complete encapsulation
eliminates leakage or high humidity problems tradition-
ally found in other pH/ORP designs. The simplified
Measurements and Ranges
*pH: 0-14
ORP: -1500 to 1500 mv
Available pH A
CCU
G
LASS
Types
GPLR hemi or flat glass
Wetted Materials
Titanium, Polypropylene, EPDM, glass; platinum (ORP only)
Process Connection
1 in. MNPT front and rear facing threads
Temperature Range
0-100°C (32-212°F)
Pressure Range-Hemi bulb
100-1136 kPa [abs] (0-150 psig)
Pressure Range-Flat bulb
100-790 kPa [abs] (0-100 psig)
Minimum Conductivity
75 µS/cm, nominal; 100 µS/cm
Integral Cable
396P: Code 01 - 25 ft; Code 02 - 15 ft coaxial
396PVP: none - must use mating VP cable
Preamplifier Options
396P: Remote or Integral
396PVP: Remote only
Weight/Shipping Weight
0.45 kg/0.9 kg (1 lb/2 lb)
PERCENT LINEARITY*
pH range
GPLR hemi bulb
GPLR flat bulb
0 - 2 pH
94%
—
2 - 12 pH
97%
98%
12 - 13 pH
98%
95%
13 - 14 pH
98%
—
1.2 SPECIFICATIONS
