Omega DPU91-BC SERIES User manual

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User’s Guide
DPU91-BC SERIES
Batch Controller System
TM

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.
Servicing North America:
U.S.A. Omega Engineering, Inc.
Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [email protected]
For Other Locations Visit omega.com/worldwide
omega.com [email protected]
TM

3OMEGA DPU91-BC Batch Controller System
• Follow instructions carefully to avoid personal injury.
• This unit is designed to be connected to equipment which can be hazardous to
persons and property if used incorrectly. Read and understand all associated
equipment manuals and safety warnings before using with this product.
• Remove power to unit before wiring input and output connections.
• Wiring connections to this product should only be performed by qualified personnel.
• Do not use unit if display is cracked or broken.
The Omega DPU91-BC Batch Controller is compatible with the Omega models FP-5300,
FP-8500, FP-5600, FP-5200, FPB, FP-2540, FP-3-1500 paddlewheel flow sensors,
models FMG-3000 and FMG-550 insertion magmeters, and models FP-5070 and FP-5060
in-line flow sensors.
Your new
DPU91-BC Batch Controller system includes the following items:
• Omega DPU91P Transmitter (Generation II or later)
• Omega Relay Module DPU90-R
• Omega Batch Module DPU90-BCM
Note:
Verify DPU91 Transmitter Generation under the OPTIONS Menu.
1. Safety
2. Compatibility
3. Description
Contents
1. Safety.........................................................................................................................1
2. Compatibility ..............................................................................................................1
3. Description.................................................................................................................1
4. Dimensions ................................................................................................................4
5. Ordering Information..................................................................................................5
6. Modules .....................................................................................................................6
7. Terminal Identification ................................................................................................7
8. Wiring.........................................................................................................................8
9. Sensor Wiring ............................................................................................................9
10. Power Wiring............................................................................................................10
11. Batch Module Wiring................................................................................................10
12. Open Collector Wiring..............................................................................................11
13. Relay Module Wiring................................................................................................12
14. Relay Mode Settings................................................................................................12
15. Operation .................................................................................................................15
16. System Setup...........................................................................................................16
17 Menu System...........................................................................................................17
18. Error Messages........................................................................................................24
19. Alarm Acknowledgement Messages ........................................................................24
20. Calibration................................................................................................................25
21. Specifications...........................................................................................................26
22. Ordering Information ................................................................................................28

OMEGA DPU91-BC Batch Controller System4
®
54.10 mm
(2.13 in.)
91.44 mm
(3.60 in.)
29.97 mm
(1.18 in.)
8.13 mm
(0.32 in.)
99.06 mm
(3.90 in.)
99.06 mm
(3.90 in.)
DPU91-BC Batch Controller System
4. Dimensions

5OMEGA DPU91-BC Batch Controller System
Do not mount in direct sunlight.
Field Mount Installation
The DPU91-BC unit can be installed in the optional Wall Mount Accessory DPU90-WM,
for field mount installation.
Recommended clearance on all sides between
instruments is 25 mm (1 in).
1. Place gasket on instrument, and install
through ¼ DIN size opening.
2. Slide mounting bracket over back of
instrument until bracket snaps into latches
on sides of instrument.
To remove:
1. Secure instrument temporarily with tape
from front or grip from rear of instrument.
DO NOT RELEASE.
2. Press bracket clips outward and remove.
Panel Cutout
92 x 92 mm
(+ 0.8, - 0 mm)
3.6 x 3.6 in.
(+0.031, -0 in.)
Panel Cutout
92 x 92 mm
(+ 0.8, - 0 mm)
3.6 x 3.6 in.
(+0.031, -0 in.)
Panel Cutout
92 x 92 mm
(+ 0.8, - 0 mm)
3.6 x 3.6 in.
(+0.031, -0 in.)
Panel Cutout
92 x 92 mm
(+ 0.8, - 0 mm)
3.6 x 3.6 in.
(+0.031, -0 in.)
minimum
clearance
25 mm
(1 in.)
Panel Mount Installation
Tools and Equipment Required
• Fine-tooth file
• ¼ DIN punch or jigsaw suitable for cutting panel
opening to within 1 mm (0.04 in) tolerance.
• ¼ DIN punches are available and recommended
for creating clean, precise openings quickly and
easily in most instrument panels.
• If a punch is not available, a jigsaw or other
cutting tool can be used. An adhesive template
is provided to help guide the cutting process.
De-burr and smooth the opening with a file.
panel
Quick-clip
gasket on front
side of panel
terminal
blocks
mounting
bracket
DC Power
Loop Voltage
System Start-up: Step 1
Prepare the Controller installation location.
If the back of the Controller is difficult to access when installed, wire the
removable terminal plugs first, then attach to DPU91P Transmitter.
Next step: Wiring (Step 2).
• Minimize handling of plug-in modules to reduce the possibility of damage due to ESD.
• Handle modules by the edges. Never touch any exposed circuitry or contacts.
• Wear an anti-static wristband or stand on an anti-static mat, or keep one hand
touching a properly grounded pipe or other properly grounded piece of metal when
handling modules.
CAUTION:
Avoid Electrostatic Discharge (ESD)
5. Installation

OMEGA DPU91-BC Batch Controller System6
Relay Module
In addition to the Open Collector output
in the DPU91P base unit, the DPU91-BC
includes a Relay Module (DPU90-R) which
adds two programmable dry-contact relays.
The Open Collector output in the base unit
uses the Relay 1 setting in the menus.
The Relay Module is assigned to
relays 2 and 3 in the menus.
Dry-contact relays are electromechanical
switches with a moving contact armature.
They are suitable for many general-purpose
applications, AC or DC, including AC loads
up to 250 V.
Install RC Filter Kits, FP90RC, on relays
used to switch motor or inductive loads.
• Two SPDT dry-contact relay inputs
• User programmable
• 250 V, 5 A maximum resistive loading (AC)
• Can switch line voltage
(typically 120 to 240 VAC)
• Can switch DC voltage (< 30 VDC @ 5A)
• Larger voltage and current ratings than
Open Collector outputs
(30 VDC, 50 mA maximum)
Batch Module
Convert a DPU91P Transmitter
(Generation II or later) to a DPU91-BC
Batch Controller System by plugging in
DPU90-BCM Batch Module.
Optional Module Wiring:
• Wire an external button or keypad
(customer supplied) to stop, start or
resume a batch remotely.
• Wire an external input that can inhibit
a batch from starting.
• The Indicator LEDs on the front panel of
the DPU91-BC show the status of
Open Collector (relay 1) and relays 2 and 3.
• Hysteresis and time delay are adjustable
for each relay.
To remove modules:
1) Remove power from the DPU91P
2) Remove the Relay module
3) Loosen bottom screw of Batch module
4) Carefully grip and squeeze the tabs
at the top of the module to release
5) Pull module away from the unit
6) Do not bend the connecting pins
CAUTION:
Switching active loads (usually inductive)
can cause contact arcing sufficient to
damage the relays. The RC Filter Kit or
“snubber” (part number FP90RC) is
available as an accessory to reduce or
eliminate these damaging effects.
Recommended for inductive loads
greater than 50 VAC (remote relays,
solenoids, pumps, etc.).
6. Modules

7OMEGA DPU91-BC Batch Controller System
Terminals 1-2: DC Power
• Required by the instrument
• Provides power to sensors, relays and the LCD backlight
Terminals 3-4: 4 to 20 mA
• Passive 4 to 20 mA output
Terminals 5-6: Open Collector
• Software selectable for Normally Open or Normally Closed
Terminals 7-10: Digital (S3L)/Frequency Input
• Sensor wiring
• DPU90-COMM wiring
The DPU91-BC requires regulated
10.8 to 35.2 VDC (24 VDC nominal)
from an external power supply.
Maximum current draw is 300 mA.
10978
DATA
GND
SHLD
V+
Digital (S3L) /
Frequency
1
2
3
4
56
OC+OC–
PWR +
PWR –
Loop +
Loop –
Power
7. Terminal Identification
Connect power and
open collector wire plug here
as shown on pages 8 and 9.
Connect sensor wire
plug here as shown
on page 7.
DC Power
Loop Voltage

OMEGA DPU91-BC Batch Controller System8
Wiring Tips:
• Do not route the sensor or DC power cables in conduit containing
AC power wiring. Electrical noise may interfere with sensor signal.
• Routing the sensor cable in grounded metal conduit can help
prevent electrical noise and mechanical damage.
• Seal the cable entry points to prevent moisture damage.
• Only one wire should be inserted into a terminal.
• Splice double wires outside the terminal or use appropriate wire
ferrule, not to exceed 2 mm (0.08 in) diameter.
Tools Required
• Phillips
screwdriver
• Flat-head
screwdriver
• Wire strippers
• Minimize handling of plug-in modules to reduce the
possibility of damage due to ESD.
• Handle modules by the edges. Never touch any
exposed circuitry or contacts.
• Wear an anti-static wristband or stand on an anti-
static mat, or keep one hand touching a properly
grounded pipe or other properly grounded piece of
metal when handling modules.
CAUTION:
Avoid Electrostatic Discharge (ESD)
All wiring connections to the DPU91-BC are made via removable terminal plugs.
In general:
• Terminals accept 12 to 24 AWG wire.
• Strip 7 mm (0.28 in.) of insulation from wire tips
and tin bare ends to eliminate fraying.
• Insert wire tip or ferrule completely into the terminal
and secure with the screw.
• Do not allow any AC leads that may be connected
to the internal relays to come in contact with low voltage wiring.
CAUTION:
DO NOT bundle Relay Module
wiring with other wiring.
Doing so may cause injury and/or damage to
DPU91P Transmitter, Relay Module, and Batch Module.
8. Wiring
System Start-up: Step 2
Wire the transmitter connections with the power off. Keep any 4 to 20 mA and
relay-actuated output devices that are connected to it offline at this time.
Wire the sensor (pg. 7), power (pg. 8) and Open Collector and relay(s) (pg. 9).
Next step: System Setup (Step 3).

9OMEGA DPU91-BC Batch Controller System
FMG-3000
Technical Notes:
• When the blue jumper
illustrated is placed over both
pins, the FMG-3000
(Blind Magmeter) outputs an
open collector frequency signal.
When the jumper is removed
(or placed over one pin for
storage) the FMG-3000 outputs
a Digital (S3L) signal.
DATA
GND
SHLD
V+
Black
Red
Shield
No connection
FP-5300, FP-5600,
FP-8500, FP-5200,
FP-5060, FP-5070
DATA
GND
SHLD
V+
Brown
White
Blue
Black
Shield
S3L
DATA
GND
SHLD
V+
Brown
White
Blue
Black
Shield
XNo
connection
Frequency
FMG-550
Black
Red
Shield
White
V+
DATA
GND
SHLD
3
4
Frequency
S L
3
3
4
FMG-3000*
*FMG-3000 Blind Magmeter
Output Selection Jumpers
Connect the silver (shield)
wire to earth ground in case
of EMI noise interference.
9. Sensor Wiring
FMG-3000 & FMG-550
Technical Notes:
• Either Frequency or Digital
(S3L) may be used.
• The frequency output will be
displayed as positive flow
regardless of the flow direction.
• Omega recommends
configuring the FMG-3000
with the Digital (S3L) output
because it is more accurate.
• Input sensor type is selected by
choosing between “SENSOR
FREQ” and "SENSOR S3L" in
the INPUT menu.
• 5 VDC power is provided to
the FMG-3000 Magmeter by
the DPU91-BC. No additional
power is required.

OMEGA DPU91-BC Batch Controller System10
Stand-alone application
Connection to a 4 to 20 mA device
The DPU91 MUST be powered by 10.8-35.2 VDC ONLY.
CAUTION!
DO NOT connect your DPU91 to AC power.
DPU91P
Terminals
+
–
Power
Supply
12 to 32 VDC
±10%
Black
Red
PWR +
PWR –
Loop +
Loop –
Common
Start
Stop
Resume
Inhibit*
*Wire an external input as override
for preventing batch from starting.
Connect an external button or keypad (not supplied) to remotely
control the DPU91-BC by wiring the Batch Module as shown.
10. Power Wiring
11. Batch Module Wiring
DPU90-BCM
Batch Module
Start
Resume
Common
Stop/Inhibit
+
–
+
–
4 to 20 mA
Device
Blue
Black
Red
PWR +
PWR –
Loop +
Loop –
Power
Supply
12 to 32 VDC
±10%
DPU91P
Terminals

11OMEGA DPU91-BC Batch Controller System
The DPU91 Open Collector (R1) output provides high-speed switching capability.
Signal frequencies can reach 400 pulses per minute.
The DPU91 Open Collector (R1) output connection is dependent upon the type of
circuit being controlled by the output.
Most indicating instruments or control system inputs require a signal voltage of 0 to 5 V
(TTL or CMOS logic levels) or 0 to 24 V. Therefore, the DPU91 Open Collector output
circuits must be equipped with a pull-up or pull-down resistor (not supplied), and a
quality regulated 5 to 24 V (depending on the application) power supply (not supplied)
is recommended to function properly.
PWR +
PWR –
Loop +
Loop –
OC – OC+
Power
Supply
V+
Gnd
Alarm
with NORMAL
set to OPEN.
PWR +
PWR –
Loop +
Loop –
OC – OC+
Pull-Up Resistor
..ȍ:
Power
Supply
9WR9
Gnd
PLC
Gnd
Input
If an external device needs logic 0
(logic LOW) input when the Open
Collector is de-energized in an NPN
configuration, set R1 NORMAL to
CLOSED in the RELAY menu.
NPN Style Wiring
OC+
Pull-Down Resistor
..ȍ:
Power
Supply
9WR9
Gnd
PLC
Gnd
Input
3:5
3:5±
Loop +
/RRS±
2&±
PNP Style Wiring
• Longer life than a mechanical relay
• No moving parts
• Faster ON/OFF switching capabilities than mechanical relays
• Can switch DC voltage only (< 30 VDC, < 50 mA)
• Not recommended for use with inductive loads
Fail-Safe Behavior
No matter the setting, the Open Collector output turns off if the DPU91 loses power.
This must be taken into account when evaluating system failure consequences.
If the system layout requires a “closed” or “on” condition for the output in case of
power loss, a mechanical dry-contact relay (NC contacts) must be used instead of
the Open Collector (R1) output.
12. Open Collector Wiring

OMEGA DPU91-BC Batch Controller System12
*Simple Mode
(See Input Menu - Page 17)
NO
NC
C
NO
NC
C
RELAY 2RELAY 3
AC or DC
power
Valve
Flow
AC or DC
power
ALARM!
The alarm is OFF during normal
operation, and will go ON when
relay energizes according to
DPU91 Relay settings.
• NO = normally open (closes when energized)
• NC = normally closed (opens when energized)
The valve is OFF during normal
operation, and will go ON when
relay energizes according to
DPU91 Relay settings.
BATCH – Batch*:
Activates relay while batch is running
0% 100%
Time
Relay energized
Relay de-energized
% Batch Percenta
g
e
MISSING – Missing Signal*:
Activates relay when no flow is detected
in X seconds after a batch cycle starts.
(X is user defined) Default = 5 seconds.
0%
Flow Input
X
Time
Relay energized
Relay de-energized
% Batch Percenta
g
e
VOL PULS – Volumetric Pulse*:
Generates a pulse each time a user
defined volume is reached.
Relay energized
Relay de-energized
13. Relay Module Wiring
14. Relay Mode Settings

13OMEGA DPU91-BC Batch Controller System
Relay Settings - continued Advanced Mode
(See Input Menu - Page 17)
EOB PULS – End of Batch Pulse:
Generates a pulse at the end of a batch
which can be used for external counter or
to start a second batch controller.
0% 100%
Time
Relay energized
Relay de-energized
% Batch Percenta
g
e
HI FLOW – High Flow:
In HI FLOW Mode, Relay is energized at
Set Flow value and will be de-energized
at Set Flow value minus Hysteresis value.
If STOP BATCH is set to YES, the
hysteresis is ignored. A batch stopped for
a high flow condition will not automatically
resume when the flow decreases below
the hysteresis level. User interaction is
required to resume the batch.
Hysteresis
Time
Process
High
Setpoint
Relay energized
Relay de-energized
OVERRUN – Overrun:
Activates relay when Overrun reaches
the specified volume (see Set Overrun
Volume, pg. 19).
Note: The Overrun Alarm Volume must be
greater than the Manual Compensation
Volume. If the Overrun Alarm Volume
is less than or equal to the Manual
Compensation Volume, the Overrun
Alarm will activate on every batch.
0% 100% Overrun
Time
Relay energized
Relay de-energized
% Batch Percenta
g
e
SRC VOL – Source Volume:
Activates relay when Source Volume falls
to specified volume ( only available when
"Source Volume" is ON ).
Relay energized
Relay de-energized

OMEGA DPU91-BC Batch Controller System14
ERROR – Error:
If using S3L flow sensor, activates relay
when no sensor is detected.
MULTIPLE – Multiple Mode:
Activates relay when any one of the four
enabled conditions are met. User can
select from Missing Signal, Overrun, High
Flow or Error.
Relay Settings - continued Advanced Mode
(See Input Menu - Page 17)
TOT VOL – Totalizer Volume:
When resettable totalizer exceeds
specified volume, relay activates and
latches.
Requires Totalizer Volume Reset to
deactivate relay (see Reset Total, pg. 16).
This mode is useful to trigger a reminder
when a process is due, as for a
backwash cycle or filter change.
Relay energized
Relay de-energized
TWO STG – Two Stage:
This function is designed to prevent
overfilling or to minimize water hammer.
Both the mainline relay and the bypass
relay are energized when the batch
starts. The mainline relay then de-
energizes at a programmed batch
percentage, allowing flow to continue
through a smaller bypass line to reduce
the fill rate (see diagram). After the batch
is dispensed, the bypass relay
de-energizes, completing the sequence.
NOTE: If Relay 1 is selected for
Two-Stage operation, relay 2 defaults to
Bypass. If Relay 2 is selected, relay 3
defaults to bypass. If Relay 3 is selected,
relay 2 defaults to bypass. flow to tank
Bypass valve
Main line Valve
Overflow
tank
0% 90% 100%
Relay 2 Bypass
Relay 1 Main
Time
Relay energized
Relay de-energized
% Batch Percenta
g
e

15OMEGA DPU91-BC Batch Controller System
ENTER
UP, DOWN keys
Scroll through Menu options or adjust values during editing.
Press both together to exit a menu or escape without saving.
RIGHT key
Select item or character to edit.
DOWN and RIGHT keys
Press both together to enable manual batch
or top off a previous batch. The valve will
open as long as the keys remained pressed.
ENTER key
Access menus
Save changes.
15. Operation
ENTER
Open Collector (R1)
Indicator LED
Mechanical Relay (R2)
Indicator LED
Backlight Sensor
(do not block)
Warning LED
Bar Graph
Units of Measure
(GPM, pH, sec, %, etc.)
Value
Label
Menu Indication
Menu Navigation Keys
Mechanical Relay (R3)
Indicator LED
®

OMEGA DPU91-BC Batch Controller System16
The menu is constructed in a loop,
so you can move forward and
backward to select an item. After
any item is edited, the display will
return to the selected item.
This basic operating procedure repeats
throughout the DPU91 program:
1. Press ENTER for 3 seconds to enter
EDIT menu.
2. Press to move to a specific menu item.
3. Press ENTER key to select the item for
editing.
4. Press or to edit the value/selection.
5. Press ENTER to store the new value/
selection.
6. Press +to select another menu item.
Repeat steps 3-5 as required.
7. Press +again to return to normal
operation.
System Setup: Menu Navigation
NOTE: Example only. Your display may be different.
NOTE: The DPU91 displays
the BATCH instrument type
ONLY if the Remote Batch
Module is installed.
16. System Setup
ENTER
3s
Edit
Input Edit
Saves Changes
Input Edit Choices
(Password may
be required)
(Password may
be required)
or or
ENTER
or
ENTER
Select another
Menu Item
Return to
View Mode
Or
2x
+Or
®

17OMEGA DPU91-BC Batch Controller System
VIEW Mode Menu - Batch Running
Stop Running Batch Press ENTER to stop batch that is running.
Note: ENTER button stops batch in any screen on VIEW Mode.
Time Left displays estimated time remaining (in minutes) until batch
is completed.
Percent Complete displays percent remaining or percent completed of
running batch. Count direction based on COUNT UP/DOWN setting in
INPUT menu.
Flow Rate displays current flow rate of running batch.
Output Current displays the output loop current in milliamperes (mA).
Source Volume displays the calculated remaining source volume.
Shown if SOURCE VOLUME is ON.
Relay Status displays relay status for Relays 1, 2 and 3. One of three
states (OFF, ON, PLS) for each relay will be displayed.
This is the normal display
(when batch is running).
BATCH Setup Checklist
1. Set the Units of Measure in Input Menu.
2. Set Flow Timebase in Input Menu.
3. Set Sensor Type (Freq or S3L) in Input
Menu.
4. Set Batch Size in Input Menu.
5. Set K-Factor (pulses per Unit Volume)
from Flow Sensor manual in CAL Menu.
6. Set up relay functions and other settings
for your own application.
17. Menu System

OMEGA DPU91-BC Batch Controller System18
VIEW Mode Menu - Batch Stopped
Start Batch Press Up or Down arrows to select the desired batch number.
Press ENTER to start selected batch. Selected batch alternately displays on the
bottom line of the display.
(Confirmation screen or password screen are user-selectable in INPUT menu.)
Available batches determined by the number of stored batches whose size is not zero.
Resume/Cancel Batch Displays when a batch is stopped without completing. Press
the key to select either RESUME or CANCEL and then press ENTER to either
resume the batch or cancel it. A confirmation or password screen for resuming a
batch is user selectable. This screen will not display if the batch reaches completion.
Override Batch occurs when the user temporarily changes a batch size in View
Mode. The change is temporary and is only active until a batch is run. After any
batch is run, an overridden batch reverts back to its stored size. Only one batch can
be overridden at a time. If the user overrides a second batch, the first overridden
batch will revert to its stored size. The batch name will display OVERRIDE while it
is overridden. A batch is overridden by pressing to edit the batch size.
Manual Batch is used for “topping off” a batch. The Batch Controller will open the
valve as long as the user simultaneously holds down the and keys.
Note: A manual batch will cancel a batch in the RESUME/CANCEL state.
Source Volume shows the calculated remaining source volume. Displays if
SOURCE VOLUME is ON. Reset source volume with key.
Note: If PWD REQUIRED is set to YES, you may be prompted to enter your
password. PWD REQUIRED setting can be changed in the OPTIONS menu.
Reset Volume? Confirmation screen for resetting SOURCE VOLUME. Press or
to select YES and press ENTER to reset source volume.
Resettable Totalizer displays the resettable totalizer. Press to reset the
totalizer. Note: If PWD REQUIRED is set to YES, you may be prompted to enter
your password. PWD REQUIRED setting can be changed in the OPTIONS menu.
Reset Total? Confirmation screen for clearing the resettable Totalizer. Press or
to select YES and press ENTER.
Permanent Totalizer displays the Permanent Totalizer value (note the "P"
indicating Permanent). Pressing displays units of measure.
Overrun displays the amount of overrun volume detected after the DPU91-BC
deactivates the batch relay, triggering valve closure. Overrun resets each time a
new batch starts.
Batch Count shows the number of batches which have run to at least 90% of
completion. Press to reset Batch Count.
Note: If PWD REQUIRED is set to YES, you may be prompted to enter your
password. PWD REQUIRED setting can be changed in the OPTIONS menu.
Reset Count? Confirmation screen for clearing the Batch Count. Press or to
select YES and press ENTER.
Customizable Label is the View name assigned to the DPU91P.
Default is BATCH for DPU91-BC.

19OMEGA DPU91-BC Batch Controller System
Customize Label If desired, a custom name can be entered. Enter 13-character
string. Default = BATCH.
Freq or S3LIf your flow sensor is configured for frequency output, select FREQ. If
configured for Digital (S3L) output (recommended), select S3L. Default = FREQ.
Batch Size Set batch size and batch name of up to ten stored batches. Setting
batch size to zero hides the batch in VIEW Mode. One batch must be non-zero.
Note: Same batch names can be assigned to multiple batches.
Batch Units Enter up to four characters to define Batch Units. Default = GAL.
(Actual calculations are determined by the K-Factor).
Divide this unit by Flow Timebase to get Flow Units.
Totalizer Units Identifies the Totalizer Units. It has no effect on any calculation.
Default = GALLONS.
Flow Units Identifies the Flow Units. It has no effect on any calculation.
Flow Units equal Batch Units divided by Flow Timebase. Default = GPM.
Flow Timebase Select S (seconds), M (minutes), H (hours), or D (days).
Default = s.
Batch Confirmation Select Batch Confirmation option. Choose ON, OFF, or PWD
(password). Default = OFF.
INPUT Menu
CAL Menu
K- Factor Set K-Factor (pulses per unit volume) according to Flow Sensor manual.
Min: 0.0001, max: 999999. Cannot be zero. Default = 60.0000. In Simple Mode, the
K-Factor will be used for all batches. In Advanced Mode, there is one K-Factor for
each stored batch. See NOTE in Calibration section for Volume Calibration procedure.
T-Factor sets the volume of each count of the Totalizer as a multiple of the volume
unit of the K-Factor. Min: 0.0001, max 999999. Cannot be zero. Default = 1.0000.
Volume Calibration Enter the dispensed volume so the DPU91 can calculate a
K-Factor. Refer to Volume Calibration section on page 24 for procedure.
Note: Relays and 4 to 20 mA output will be suspended while Volume Calibration is
performed, except for relays used for Batch or Two Stage modes. Relays in pulse
mode will suspend pulsing while Volume Calibration is being performed.
Manual Overrun Compensation (ADVANCED Mode only) When Manual
Compensation is enabled, a batch will be stopped when the dispensed batch volume
reaches an amount equal to the batch size volume minus the Manual Overrun
Compensation volume.
Calibration Date Enter date of calibration (mm-dd-yyyy) and initials of calibrator (ii).

OMEGA DPU91-BC Batch Controller System20
LOOP Menu
Loop Source In ADVANCED Mode, select COMPLETION or FLOW RATE. In
SIMPLE Mode, only COMPLETION is available for the loop source.
mA at Completion Shown if COMPLETION is selected. Enter mA value to be
output when batch is completed. Select 4.0 mA or 20 mA.
Error Value Shown if COMPLETION is selected. Set desired Loop output value
when sensor error (e.g., bad sensor, broken wire) is detected. Select 3.6 mA, 22 mA,
NONE. Default = 3.6.
4 mA Setpoint Shown if FLOW RATE is selected. Set flow rate value
corresponding to desired 4 mA output. Default = 0.
20 mA Setpoint Shown if FLOW RATE is selected. Set flow rate value
corresponding to desired 20 mA output. Default = 100.
Adjust 4 mA Allows fine-tuning to compensate for errors in other equipment
connected to the DPU91. The display value represents the precise current output.
Adjustment limits: 3.80 mA to 5.00 mA. Default = 4.00 mA.
Adjust 20 mA Allows fine-tuning to compensate for errors in other equipment
connected to the DPU91. The display value represents the precise current output.
Adjustment limits: 19.00 mA to 21.00 mA. Default = 20 mA.
Test Loop Press or to manually output a current value from 3.6 mA to 21.00
mA to test the output loop.
INPUT Menu - continued
Mode Select Select ADVANCED or SIMPLE Mode. ADVANCED Mode enables
additional features in RELAY and LOOP Modes. Default = SIMPLE.
Count Up/Down Select count direction of Batch Volume and Percent Complete
(Source Volume always counts down). Default = Count Up.
Missing Signal? Determines if a Batch is stopped when No Flow is detected.
If YES is selected, Batch will be stopped; if NO is selected, Batch will continue.
Default = NO.
Note: This setting is independent of Missing Signal Relay Mode; see page 19.
Set On Delay Shown if MISSING SIGNAL is set to YES. Set desired ON delay
time in seconds. Default = 6 sec.
Select Batch Type To change desired instrument type (i.e., Flow, pH, etc.). The
bottom line will display ALL SETTINGS WILL BE RESET. ARE YOU SURE? The
top line of the display will blink NO. Press or to select YES. Press ENTER
again to finalize your selection. For other DPU91 instruments, BATCH will be
displayed only when the Batch Module is installed.