Honeywell DR4500 Data sheet
®
DR45AW Truline
Open Channel Flow
44-45-03-11
8/02
Page 1 of 12
Circular Chart Recorder
Function
The Model DR45AW is a Truline
recorder that has been designed
to perform as an Open Channel
Flow recorder. It combines the
broad capabilities of Honeywell’s
Truline recorders with special
features needed to serve the
water and waste water industries.
These features include:
• accurate flow measurement
• V-notch, rectangular, and
Cipolletti weir calculations
• Parshall flume calculation
• Palmer-Bowles flume calculation
• up to four optional totalizers (one
per input) that can be
automatically scrolled on the
display
• optional NEMA4X door
• optional non-control pulse output
counter alarm
• adjustable low flow cutoff
Honeywell’s Model DR45AW
Truline recorder is a one to fourchannel, microprocessor-based,
circular chart recorder. Its “onepen” stylus printhead produces up
to four analog traces and prints
alphanumeric chart data on a
blank heat-sensitive chart. All four
traces share the same time line
reference, which the Truline
prints. This eliminates the error
caused by pen alignment offsets
in conventional pen designs.
Since the Truline prints the chart
and generates the analog traces
at the same time, there is no error
due to variations in chart size
caused by changes in
temperature and humidity.
In addition to printing informative,
accurate chart records, the Truline
recorder alternately displays
process variable values for all
channels in the selected
engineering units.
Figure 1—Truline recorder provides printed chart data and continuous
digital indication of process variable value.
1559
3IN 86.0
ruline
Specification
20889
Industrial Measurement and Control, 1100 Virginia Drive, Ft. Washington, PA 19034
Printed in U.S.A. © Copyright 2002—Honeywell
44-45-03-11
Page 2
Features
Five Open Channel Flow
Elements
They are:
• V Notch Weir
• Rectangular Weir
• Cipolletti Weir
• Parshall Flume
• Palmer-Bowles Flume
Pulse Output Counter Alarm
provides 2 configurable time
duration relay output when a
selected incremental change in
volume has occurred. The pulse
output relay can be reset from the
keyboard.
Low Flow Cutoff
each input being used for
totalization. It allows the user to
select a percent of flow range value
that inhibits the totalizer’s
accumulator whenever the input
signal is less than the selected
value.
Dual Displays
fluorescent, alphanumeric digital
displays make pasteurization
process data instantly available to
your operation.
User Configurable
language prompts, coupled with
simple keystroke sequences, make
configuring the recorder easy and
straightforward. You can set and/or
alter operating parameters to fit
your requirements without recalibration.
All Purpose Chart
purpose, blank chart eliminates the
need for ordering and stocking
several types of charts. Users can
design the chart to match their
specific application.
Four Channel Input
channels that monitor process
variables from a variety of sensor
types help reduce panel space
requirements.
“One-pen” Stylus Print Head
prints configurable alphanumeric
chart data including time and trend
lines. This automatically
compensates for chart width
variations caused by changes in
the ambient relative humidity.
— are configurable.
—
— available for
— bright, vacuum
— English
— one all-
— up to four
—
Time/Date
— To guard against
unauthorized chart advancement,
an integral real-time clock provides
accurate timing for the recorder’s
time and date printing, and also any
operator changes. A 10-year life,
battery backup assures correct
timing even when power fails.
External Interface
Selections
• Four Totalizers — up to four
totalizers (one for each input) are
adjustable. A manually adjustable
totalizer function can be selected
to make corrections to the
accumulated value as a result of
power outage.
• Modbus
Communications —
option allows you to network your
recorders to take advantage of
overall monitoring of the system
using an RS485 network.
• Alarm Output
— Ties “soft”
alarms to up to two integral SPST
relays to activate user’s external
equipment.
• Digital Input
— Allows users to
initiate, from a remote location,
through two dry contact closures,
selected functions such as auto to
manual control mode, direct to
reverse controller action, or
initiate autotune.
• Timer — This optional feature
provides a configurable time
period of 0 to 99 hours, 59
minutes or units of minutes and
seconds. It can be started via the
keyboard, alarm 2, or by a digital
input. The timer output is Alarm 1,
which energizes at the end of the
Timer Period. Alarm 1 can be
automatically reset. The Timer
Period can be changed between
each batch. Status is shown on
the lower display.
• Auxiliary Output
— there is also
a 4 to 20 mA current output
available.
Options
• Door Options — Choice of gray,
black or blue doors with standard
latch or optional lock.
and FM approved NEMA4X door
available.
Optional UL
• Chart Illumination — Lights the
chart area to improve readability
in lower light areas.
•Math Functions
Algorithms
— pre-configured
algorithms for easy implementation into other control loop with
Ratio and Bias.
Summer - will add three inputs
with the result as the derived PV.
Multiplier/Divider - uses three
analog inputs to calculate a
derived PV with or without square
root.
Multiplier - multiplies three inputs
with the result as the derived PV
with or without square root.
Subtractor/Multipler - the
difference between input 1 and
input 2 is multiplied by input 3.
Input High/Low Select - specifies
the PV as the higher or lower of
two inputs.
Polynomial Curve
Characteristics
— A fifth order
polynomial equation can be used
on any one of the analog inputs.
• Approval Body Options — FM
approval, CSA certification and
UL Listing or a combination is
available.
• Customer ID Tag
— (30
characters max.)
• CE Mark
— Conformity with
73/23/EEC, Low Voltage
Directive and 89/336/EEC EMC
Directive.
User Configurable
In the DR4500A Series recorder,
microprocessor control replaces
conventional electromechanical
recording techniques. Its software
primarily determines the recorder's
capabilities. Since Honeywell has
preprogrammed a variety of
functional capabilities into the
recorder, you only have to configure
those functions that are specific for
the given application. You configure
the recorder using English language
prompts that appear in the digital
displays. The configuration data
(type of input, chart speed, chart
range, alarm settings, etc.) are
stored in non-volatile memory for
safe keeping in the event of a power
failure.
Operator Interface
Two digital displays present the
process variable (PV) value and
by key selection, the deviation
from reference input; totalization
value; or engineering units as
desired. The lower display can
also be set to hold or scroll.
In configuration mode, digital
displays are pre-empted by
English language prompts and
values that you use to enter
configuration data. Indicators light
to show alarm condition, which
channel PV is on display, use of
remote set point, and selected
temperature unit.
Input Processing
The input can be one of many
standard low-level electrical
signals. Since inputs are isolated,
users can connect different types
of input signals to multi-channel
models in any combination. The
input type and range are user
configurable for hassle-free
actuation changes in the field.
Ranges are easily expanded and
compressed within their span
limitations to meet specific
measurement needs. Users can
select upscale or downscale
sensor break protection for many
of the actuations.
Each input is sampled at a rate of
3 times per second for 1 or 2
inputs, or 3 times in 2 seconds for
3 or 4 inputs. Each sample is
amplified and then converted to a
digital signal, which is isolated and
passed to the microprocessor. A
digital filter with configurable time
constants lets users apply input
signal smoothing as desired. All
non-linear inputs are linearized by
the microprocessor.
ALM
CHN
RSP
OUT
Figure 2—Operator interface includes displays and keypad for
comprehensive interaction with the recorder and the process.
An integral 24 Vdc power supply,
along with 4-20 mA input configuration, allows direct operation
with up to two transmitters without
the need for any additional/
external transmitter power supply.
To totalize a variable, such as a
flow signal, users select the
applicable input and set the digital
display scaling factor through
configuration. This eliminates the
need for additional integration
hardware including a mechanical
counter. The totalizer has an eight
digit display and 14 digit printing
on the chart. A grand total can be
enabled to print the sum of all the
totalizers. Also, there is the
capability to reset the totalizer
remotely with digital inputs and a
low flow cut off can be set in
percent of range, below which the
applicable totalizer does not
increment.
All DR4500A Series recorders
include self-diagnostic systems
that check critical operations and
provide error messages to alert
users about detected faults.
F
1
X HR
CHRT SP
Diagnostics
A
FUNC
LOWR
DISP
MAN
AUTO
%
SET
UP
Power-up self-diagnostics is a
microprocessor controlled
diagnostic program that runs tests
on selected circuitry when the
recorder is powered up. A “key”
test allows a user to initiate, on
demand, a self-diagnostic routine
that checks the keypad and front
panel displays.
Process Interface
Power, input, and output wiring
connect to terminations inside the
case. Knockouts in the sides and
bottom of the case accept conduit
connections for convenient wire
entry.
Construction
The DR4500A Series recorder is
housed in a molded case which
can be panel or surface mounted.
A glass or acrylic window,
gasketed door protects internal
components from harsh industrial
environments while allowing easy
access to the chart and operator
interface. Circuitry is partitioned
on printed circuit boards for ease
of service.
NEMA4X door is also available.
A UL and FM approved
44-45-03-11
Page 3
CHART
RUN
HOLD
20951
44-45-03-11
Page 4
Recording and Printing
Both the chart and the printhead
are driven by the stepper motors,
which are controlled by the
microprocessor allowing precise,
maintenance free operation.
Since chart speed is configurable,
users can easily alter the chart
speed through the keypad. Gear
changing or additional motors are
no longer required.
The microprocessor uses the
configured chart range data as
well as the input data to determine
the proper printhead position. The
stepper motor accurately positions
the printhead drive. By using a
“one-pen” printhead that is
capable of printing alphanumeric
characters, users can now set
various “printed” chart data
through configuration. This
versatile recorder automatically
performs this function by printing
pertinent identifying data on the
border of the chart. This data can
include: listing of the monitored
variables, range of each variable,
time references, and totalization
numbers. The Figure 3 reproduction of a 12-inch circular chart
illustrates some of these recording
features.
Input #4
Input #3
Input #2
Input #1
This data, plus printed time lines
and engineering units of scale,
eliminate the need to maintain an
inventory of a variety of preprinted
charts.
The Truline recorder uses a dot fill
technique from a microprocessor
algorithm to produce a continuous
analog trace of a process variable.
Time/Date
Range
Range Values
Grand Total
Individual Totals
1, 2, and 3
Figure 3—Sample of Printed Chart.
Header
TOTAL=5353225
TOT 3=4997274 GAL
TOT 2=216663 GAL
TOT 1=139287 GAL
0 TO 400 GPM
22847
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