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Rosemount 54e Controller: Conductivity, pH/ORP, and Amperometric Family of Controllers

Rosemount 54e Controller
Conductivity, pH/ORP, and Amperometric Family of Controllers

The Rosemount Model 54e family of analyzers, with
the appropriate sensors, will monitor and control pH /
ORP, conductivity / resistivity, dissolved oxygen (ppm
and ppb levels), free chlorine, total chlorine, or ozone
in a variety of process liquids.
Features
>
Housed in a rugged NEMA 4X (IP65) weather-
proof, corrosion resistant enclosure of epoxy painted
aluminum.
>
Back lit display with easy-to-use interface
>
Two independent outputs
>
Three alarms with programmable logic plus one
dedicated fault alarm.
>
Optional TPC or PID Control capability.
Model 54e pH / ORP Controller
>
Comprehensive pH glass diagnostics warn users
of the need for calibration, maintenance, or sensor
replacement
>
Automatic calibration with buffer recognition and
stabilization check
>
Selective ion capability
Model 54eC Conductivity Controller
>
Measures conductivity, resistivity, or percent con-
centration (%)
>
Uses either contacting or inductivity sensors to
meet most application requirements
>
Temperature correction algorithms for high purity
water, cation conductivity, and linear temperature co-
efficient. Temperature compensation can also be
turned off
Model 54eA Amperometric Controller
Measures dissolved oxygen (ppm & ppb levels), free
chlorine, total chlorine, and ozone.
>
0n-board pressure sensor for automatic air-
calibration of oxygen sensors
>
Second input for pH sensor allows automatic pH
correction for free chlorine measurement. No expen-
sive reagents needed
>
Automatic buffer recognition for pH calibration.
>
Interval timer operates spray cleaner for oxygen
sensor in aeration basins.


General Description:
The Model 54e family of analyzers, with the appropri-
ate sensors, monitor and control pH/ORP, conductiv-
ity/resistivity, dissolved oxygen (ppm and ppb level),
free chlorine, total chlorine, or ozone in a variety of
process liquids.
The analyzer/controller is housed in a rugged NEMA
4X (IP65) weatherproof, corrosion resistant enclosure
of epoxy-painted aluminum. It is suitable for panel,
pipe or wall mounting. All functions are accessible
through the front panel membrane keyboard that fea-
tures tactile feedback.
The large backlit dot-matrix liquid crystal display con-
tinuously indicates the measured variable in large
numerals, along with the temperature, output value

PN 0000000 Rev A

Water& Process Technologies
www.gewater.com
©2004, General Electric Company.
North America
Minnetonka, MN
952-933-2277

Europe/Middle East/Africa
Heverlee, Belgium
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Asia/Pacific
Shanghai, China
86-21-5298-4573

Global Headquarters
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All products mentioned are trademarks of the General Electric Company and may be registered in one or more countries.

PFE013 0405
g


and two programmable process parameters (such as
alarms or diagnostics variables). Three levels of secu-
rity are available: 1) calibration, 2) output range and
alarm setpoint adjustment, and 3) advanced configu-
ration. A hinged front panel provides convenient wiring
access. All operations and descriptive messages can
be field selected for English, French, German, Italian,
Portuguese, or Spanish.
The two independent, isolated outputs provide 4-20 or
0-20 mA signals for the process measurement and
temperature.
The controller option also allows PID control choices
acting on process measurement or temperature.
Manual control of the output may also be selected for
routine maintenance and tests.
Three process alarms are a standard feature. All
alarms have programmable high or low activation,
independent setpoints, adjustable hysteresis (dead-
band), and time delay. One relay may be configured
as a timer relay for chemical cleaning, which may be
activated at a specific time interval. An overfeed timer
feature is also selectable for any one process relay.
The control option allows each alarm the additional
choice of Time Proportional Control. During any relay
activation, a corresponding Green LED is illuminated.

Description: Model 54e pH/ORP Controller
The Model 54e pH/ORP Microprocessor Analyzer,
with the appropriate sensor, is designed to monitor
and control pH or ORP in industrial and municipal
processes using the most advanced technology avail-
able.
The continuous diagnostic capability of the analyzer
eliminates troubleshooting guesswork by alerting the
user to the following problems:

Cracked or broken
pH electrode
Faulty tempera-
ture element
Aged glass
calibration rec-
ommendation
Open wiring
Worn out or non-
immersed elec-
trode
Analyzer elec-
tronics failure
Poisoned refer-
ence (off line
only)

In the event of one of these conditions, the analyzer
will display a descriptive message of the problem, il-
luminate a red LED on the front panel, and drive the
outputs to pre-selected fault mode values. A dedi-
cated fault relay may be used to operate a visible or
audible alarm.
The glass impedance is continuously monitored and
can be programmed to read out on the main display.
Fault setpoints for the glass impedance are program-
mable. The glass impedance is temperature compen-
sated for the greatest accuracy.
The automatic buffer recognition feature uses stored
buffer values and their temperature curves for the
most common buffer standards available worldwide.
The analyzer will recognize the last two buffers used
for the two-point calibration, and perform a self-
stabilization check on the sensor in each buffer.
Three process alarms are a standard feature. All
alarms have programmable high or low activation,
independent setpoints, adjustable hysteresis (dead-
band), and time delay. One relay may be configured
as a timer relay for chemical cleaning, which may be
activated at a specific time interval. An overfeed timer
feature is also selectable for any one process relay.
The control option allows each alarm the additional
choice of Time Proportional Control.
During any relay activation, a corresponding Green
LED is illuminated.
Page 2

Fact Sheet


The Model 54e pH/ORP is compatible with either an
external Pt 1000 or a Pt 100 RTD located in the sen-
sor to compensate the pH reading for process tem-
perature fluctuations. Manual temperature compensa-
tion is keyboard selectable. Processes with pH
changes due to temperature can be compensated
using a programmable temperature coefficient or iso-
potential point.
Description: Model 54eC Conductivity
Controller
The Model 54e C Analyzer/Controller, with the appro-
priate sensor, monitors and controls / resistivity in a
variety of industrial processes. The analyzer can use
either a contacting electrode or an inductive (toroidal)
conductivity sensor, selected via keyboard entry.
Process measurement selections are conductivity,
resistivity, raw conductivity, or percent (%) concentra-
tion.
The temperature correction algorithm is user-
selectable. Choose from high purity water (dilute so-
dium chloride), cation conductivity (dilute hydrochloric
acid), or an adjustable linear temperature coefficient
(0 to 5.00%/°C). The high purity water and cation con-
ductivity corrections are good to 100°C. The linear
temperature correction applies between -5 to 200°C.
The user can set the linear temperature coefficient's
reference temperature. The percent concentration
measurement includes the choice of four common
solutions (0-12% NaOH, 0-15% HCl, and 0-25% or
96-100% H2SO4), which include specific nonlinear
temperature corrections that depend on the concen-
tration being measured and the process temperature.
A versatile data entry menu for entry of a custom solu-
tion, with concentration and conductivity values for up
to five points, lets the analyzer generate a best-fit
quadratic curve. Reference temperature and tempera-
ture slope may be adjusted to provide optimum re-
sults.
Description: Model 54eA Amperometric
Controller
The Model 54eA Analyzer/Controller with the appro-
priate sensor monitors and controls dissolved oxygen
(ppm and ppb level), free chlorine, total chlorine, and
ozone in a variety of process liquids. The analyzer is
compatible with Rosemount Analytical series 499A
amperometric sensors for oxygen, chlorine, and
ozone; and with Hx438 and Gx448 steam sterilizable
oxygen sensors.
For oxygen