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RTI2-Series
RATE/TOTAL INDICATOR
INSTRUCTIONS
RTI2-SERIES RATE/TOTAL INDICATOR
INSTRUCTIONS
Optional Protective Cover Closed
PROUDLY
MADE
IN THE
USA
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TABLE OF CONTENTS
RTI2 INSTRUCTIONS
General Information
General Information, Features ......................................................................................................................... Page 3
Specications, Pulse Output Functions ........................................................................................................... Page 4
Installation
Dimensions, Wall Mount, Meter Mount, Panel Mount.................................................................................... Page 5
Connection Diagrams
RTI2-139/115Vac Option, RTI2 3-wire Mechanical/Dual Scaled Pulse Output ........................................... Page 6
RTI2/EX Magmeter ............................................................................................................................................ Page 7
RTI2-139/EX Magmeter .................................................................................................................................... Page 7
Settings
K-Factor, Changing Flow Indicator Settings ..................................................................................................... Page 8
RTI2 Secondary Menu Functions ..................................................................................................................... Page 10
Troubleshooting
Problems, Probable Causes, Things to Try ...................................................................................................... Page 11
TABLES AND DIAGRAMS
Features ............................................................................................................................................................. Page 3
Specications, Pulse Output Function Table ................................................................................................... Page 4
Dimensions, Meter Mount, Panel Mount......................................................................................................... Page 5
Connections: RTI2-139/115Vac Option .......................................................................................................... Page 6
Connections: RTI2 3-Wire Mechanical/Dual Scaled Pulse Output ................................................................ Page 6
Connections: RTI2/EX Magmeter ..................................................................................................................... Page 7
Connections: RTI2-139/115Vac Option .......................................................................................................... Page 7
K-Factor, Flow Indicator Menus ........................................................................................................................ Page 8
Troubleshooting ................................................................................................................................................. Page 11
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Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
Page 3
GENERAL INFORMATION
RTI2 INSTRUCTIONS
The RTI2 ow computer is a microcontroller-based indicator/
transmitter that interfaces with pulse output ow sensors to
compute and display ow rate, ow total, and also generate
output signals representing ow. The RTI2 has two scaled
pulse outputs. Galvanic isolation is provided for most pulse
outputs (see table.)
The RTI2 is a “two-wire” or “loop powered” device, meaning
that it is powered by the 4-20 mA loop circuit itself. An optional
internal AC power supply* is available for the RTI2 with dual
24 and 12VDC outputs to power both the loop and sensors
requiring more power than the loop can supply.
Pulse and 4-20mA analog outputs can be used to signal
external devices, e.g. certain metering pumps and water
treatment controls. Alternatively, one or more pulse outputs
*Internal power supply is available for the wall mount option only.
Features
can be congured as alarm outputs. These ow computers
can be password protected to prevent resetting the total or
changing conguration settings.
The RTI2 meter is available in wall and meter mount
congurations. The RTI2 can also be panel mounted. Some
congurations can be converted from wall to meter or meter
to wall after installation if needed. Consult factory for details.
Protective Cover (Optional)
Display
Setup Keys**
Electronics Module
Lower Housing
Strain Relief
Wall-Mount Brackets
** Includes password protection for tamper prevention when needed
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
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GENERAL INFORMATION
Specications*
RTI2 INSTRUCTIONS
Power
Display
Units Rate Units
Outputs Pulse Output 1 Scaled pulse output, high alarm output or low alarm output. Optoisolated.
Set P Range 0.1 - 99999.9 units/pulse
Input 5V pulse or contact closure
Input Range
K-Factor Range .001 - 999999.999
Flow Alarm Output Range 0.1 - 99999.9
Operating Temperature 0˚ to 55˚ C (-32˚ to 131˚ F)
Non-Operating Temperature -40˚ to 75˚ C (-40˚ to 158˚ F)
Environmental NEMA 4X, IP67
Regulatory
* Specications subject to change • Please consult our website for current data (www.dwyer-inst.com).
1
Scaled output pulses have a xed width of 100ms. Maximum pulses per second is 6.5Hz
2
For pulse frequencies <1 Hz, increase setting in SET F menu to 3 or higher.
Rate 5-digit autorange
Total 8-digit
Total Units
Pulse Output 2 Scaled pulse output, high alarm output or low alarm output.
Loop Power Output 4-20mA Loop
7-30Vdc, 4mA (4-20 mA when loop-powered)
Gallons/Second/Minute/Hour/Day, Liter/Second/Minute/Hour/Day, Cubic Feet/Second/Minute/Hour/Day, Cubic Meters/
Second/Minute/Hour/Day, Miner’s Inch, Mega Liters/Day, Million Gallons/Day, Fluid Oz/Second/Minute/Hour/Day, Barrels (42
gallon)/Second/Minute/Hour/Day
Gallon, Gallon x 1000, Liters, Mega Liter, Cubic Meter, Acre Feet, Cubic Feet,
Cubic Feet x 1000, Million Gallon, Miner’s Inch Day, Acre Inch, Fluid Ounce, Barrels (42 gallon)
1
2
0.75
- 2000Hz
Mark
1
Pulse Output Function Table
PULSE OUTPUT 1 (SCALED)
TYPE Current sinking
MAX. VOLTAGE 30 Vdc
MAX. CURRENT 100 mA
MAX. FREQUENCY 6.5 Hz
PULSE WIDTH 100 ms
ISOLATION 300 V
CONFIGURABLE AS ALARM YES (High or Low)
PULSE OUTPUT 2 (SCALED) (See Note 1)
TYPE Current sinking
MAX. VOLTAGE 30 Vdc
MAX. CURRENT 10 mA
MAX. FREQUENCY 6.5 Hz
PULSE WIDTH 100 ms
ISOLATION 300 V
CONFIGURABLE AS ALARM YES (High or Low)
NOTE 1: With 2000 ohm or lower pull-up resistance.
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Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
Page 5
INSTALLATION
3.374
.10"
.50"
4.77 (121.2)
(110)
#10
RTI2 INSTRUCTIONS
Dimensions are in Inches (Millimeters)
Screw
4.10 (104.1)
4.35 (110.5)
2.50
(63.5)
4.10
(104.1)
#10
Screw
0.10 (2.5)
0.78
.78"
(19.8)
4.33
Wall Mount. To mount an RTI2 indicator to the wall, hold the
unit in the desired position, mark the holes in the mounting
feet, drill and mount with screws. A meter-mounted indicator
can be converted to a wall mount using an adapter mounting
kit. Contact distributor for information.
0.50
(12.7)
3.37
(85.6)
Sensor Wires
Meter Mount
Sensor Wires
Meter Mount. If the RTI2 indicator was ordered as a meter
mount model, the housing is already mounted directly to the
ow sensor and needs no further installation.
An RTI2 module can be converted from a wall-mount to a
meter-mount using the mounting kit (contact distributor)
Panel Mount. Using the “Panel Cutout” drawing as a
guide, cut a hole in the panel. Place the RTI2 indicator on
the panel and mark the holes, drill, and mount with the
supplied screws and washers.
3.56 (90.4)
that includes a lower housing and associated hardware and
installs as follows:
1) Remove the strain relief through which the ow sensor
cable runs.
2) Cut the cable to about 6” in length. Carefully strip the
cable jacket to expose the three colored wires (red, white,
and black) inside.
3) Route the wires through the threaded connector pre-
Panel Cutout
3.56
(90.4)
installed in the bottom of the housing.
4) Start the threaded connector into the female thread on
the top of the ow sensor. Be sure to match the
oblong shape on the bottom of the housing to the
depression on the top of the ow sensor.
5) Using an ordinary screwdriver inserted in one side of the
slot (see drawing), tighten the screw as much as possible.
6) Strip the wire ends, make the connections to the indicator
as shown in Connections Diagrams, and then use the cover
screws to attach the indicator to the top of the housing.
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
2.4 (61) TYP
3.5 (88.9) TYP
(PANEL CUTOUT)
.218 (5.5)
Connections. To connect the ow computer to a ow
sensor or an external device such as a chemical metering
pump, follow the Standard Connections diagrams on the
following pages.
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CONNECTION DIAGRAMS
Power Source
POWER
SENSOR
ENGD
+
_
_
+
S
PULSE
OUT 2
PULSE
OUT 1
+
_
+
_
RED
WHITE
BLACK
+
_
9-30 Vdc
Loop Power
Supply
Flow
Sensor
FT440
Electronic
Metering Pumps
_
+
S
_
+
_
+
_
+
4-20mA
Device
+
_
Connections for RTI2-139/115Vac Option
Dashed line shows (-) terminal connection
if 4-20mA device is not used
RTI2 INSTRUCTIONS
12V
4-20mA
+
Device
_
Device
_
+
POWER
_
_
+
_
SENSOR
S
+
FT440
RTI2
ENGD
+
_
PULSE
OUT 2
+
PULSE
OUT 1
_
+
RTI2-139
FT440-139
(Dual Power Supply)
Lower Housing
Connections for RTI2 3-wire Mechanical/ Dual Scaled Pulse Out
RTI2
WHITE
BLACK
GREEN
_
24Vdc
+
To 115Vac
_
+
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Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
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CONNECTION DIAGRAMS
Red
Connections for RTI2/EX Magmeter
RTI2 INSTRUCTIONS
+
4-20mA
Device
Status
Zero
Adj
LED
Option
1
Reverse
-
Output
Only
+
2
Max 6mA
30Vdc
12-24Vdc
Output
Power
Forward
3
-
+
4
5
-
+
6
_
+
_
+
Black
Red
Connections for RTI2-139/EX Magmeter
_
Black
Power Supply
White
Green
Power Supply
_
9-30 Vdc
+
_
12 Vdc
+
Red
FT440
RTI2
POWER
_
_
+
+
SENSOR
S
ENGD
_
+
_
S
_
S
_
PULSE
OUT 2
+
PULSE
OUT 1
_
+
_
FT440-139
RTI2-139
(Dual Power Supply)
Lower Housing
Max 6mA
30Vdc
12-24Vdc
4-20mA
+
Device
Status
Zero
Adj
LED
Option
1
Reverse
-
Output
Only
+
Output
2
Forward
3
-
+
4
5
-
Power
+
6
_
+
_
+
Dashed line shows (-) terminal connection
if 4-20mA device is not used
POWER
_
_
+
+
White
Green
Black
Red
SENSOR
S
RTI2
FT440
ENGD
_
_
s
+
_
PULSE
OUT 2
+
PULSE
OUT 1
_
+
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
WHITE
BLACK
GREEN
_
24Vdc
+
To 115Vac
Power Source
_
_
+
+
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SETTINGS
0.00
10031295
MF81T-P200
K: 53.6
RTI2 INSTRUCTIONS
K-Factor
At a minimum, every RTI2 ow computer must be programmed
with the “K-factor”. (This is the number of pulses that the meter
produces per gallon of ow.) If you wish to read in units other
than gallons, see below.
The K-factor on any Dwyer ow sensor tting or in-line meter
can be found on the model-serial label. The line reading K =
xxxx gives the desired number. For depth-adjustable sensor,
look in the instruction manual under your pipe size.
Fixed Depth Meter
Menu Navigation
The left/right keys are used to move through the menus and
position the cursor during data entry. The up arrow is used
to scroll through the available values that are to be entered.
(examples: numerical values for K factor entry or selection of
units from the available options) The enter key (represented
on the keypad by the check mark) is used to save selected
entries and in conjunction with the exit tab to move between
menu screens. As one navigates the menus the current
parameter setting is shown and instructions are displayed
for how to change the selected parameter.
Main Menu
R UNITSET K T UNIT SET D
086238.235
PRESS TO SET NUMBER
OF PULSES RECEIVED PER
GALLON OF FLOW
SET P RESET EXIT
Find Your K-Factor Here
Changing Flow Indicator Settings
The home screen
GPD
MID
0
The HOME Screen, shown above, is the normal screen which
displays TOTAL ow volume and ow RATE. The Four buttons
below the LCD display are used to access menu screens for
viewing and changing setup parameters.
All menu screens consist of two rows of tabs surrounding a
dialog box that lets you view and change setup parameters.
Set K
R UNITSET K T UNIT SET D
086238.235
PRESS TO SET NUMBER
OF PULSES RECEIVED PER
GALLON OF FLOW
SET P RESET EXIT
View or change the K factor. The K factor is the number of
pulses the ow sensor provides for every gallon of ow. (Note
that the decimal is xed at three places. If you only have two
decimal places for your K-factor, enter a zero for the third
digit. If unable to set K-factor, the unit is "locked" to prevent
tampering. Please contact your distributor for assistance.)
R Unit
R UNITSET K T UNIT SET D
FLOW RAT E = GPD
PRESS TO SET UNITS
FOR DISPLAY
Page 8
SET P RESET EXIT
View or change the ow rate units
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
Page 9
SETTINGS
RTI2 INSTRUCTIONS
T Unit
R UNITSET K T UNIT SET D
TOTAL = GALLONS
PRESS TO SET UNITS
FOR DISPLAY
SET P RESET EXIT
View or change the total volume units
Set D
R UNITSET K T UNIT SET D
000
PRESS TO CHOOSE
NUMBER OF DECIMAL PLACES
IN TOTAL DISPLAY
SET P RESET EXIT
View or change the number of decimals displayed in the
total volume display
Set P or Set A
R UNITSET K T UNIT SET D
00000.0 GALLONS
PRESS TO SET NUMBER OF
GALLONS TOTALIZED PER
PULSE SENT OUT PULSE1
SET P RESET EXIT
Exit
R UNITSET K T UNIT SET D
PRESS TO EXIT MENU AND
RETURN TO FLOW DISPLAY
SET P RESET EXIT
Return to the home screen, enter a submenu, or accept a
parameter change
Secondary Menu.
OUTPMAIN INPP CODE
SCROLL TO SELECT A
SUBMENU AND CHANGE
FEATURES
EXIT
To enter the secondary menu use the left/right arrow keys to
navigate to the exit tab. While the exit tab is highlighted press
the up arrow 4 times. The secondary menu, shown above, will
now be displayed.
OutP
OUTPMAIN INPP CODE
PRESS TO SET ALARMS,
PULSE OUT, AND 4-20 mA
The factory setting will show Set P which allows one to view
or change the volume of ow totalized per pulse sent to
pulse out 1. The units for Set P follow the units selected for
the rate display. Secondary menu selection will change the
display to Set A. The alarm can be set to trigger on either a
high or low ow condition as determined by the user.
Set 20 (RTI2 ONLY)
R UNITSET K T UNIT SET D
00000.0 GALLONS
PRESS TO SET THE FLOW
RATE AT WHICH 20 mA
(MAX) OUTPUT IS DESIRED
SET P RESET EXIT
SET 20
Input the ow rate at which 20 mA (max) output is desired
Reset
R UNITSET K T UNIT SET D
PRESS TO RESET TOTAL
SET P RESET EXIT
Reset the total ow volume to zero. This tab is not available
when the -64 non resettable total option is ordered
EXIT
View or change the function of Set P tab on the main menu.
Options are pulse out 1, alarm low, alarm high. If the alarm
high/low option is selected a Set H (hysteresis) tab is
available. The hysteresis entry is a % value. The value denes
the % change required for a change in alarm state to occur.
InP
OUTPMAIN INP P CODE
PRESS TO SET F, J, REED
AND PULSE INDICATOR
EXIT
View or change the lter (set F), jitter (set J), enable
reed mode. Use the lter setting if the display is jumping
excessively due to ow conditions. Use the jitter setting to
enter a time delay to handle start up conditions. Jitter units
are seconds.
Pcode
OUTPMAIN INP P CODE
PRESS TO SET PASSCODE
AND CHANGE PROTECTED
FEATURES
EXIT
Enter the passcode for access to protected features.
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
Page 9
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SETTINGS
The RTI2 Secondary Menu Functions
RTI2 INSTRUCTIONS
OutP
Enters the menu where the default output functions are
selected.
The P/A tab changes the function of the outputs. Default
is scaled pulse out for both outputs. Either output can be
changed to alarm high or alarm low. If alarm options are
selected menu tabs for setting the alarms will be displayed
on the main menu (alarm 1) or the secondary menu (alarm
2) If the alarm options are selected a Set H (hysteresis) tab
is available. The hysteresis entry is a % value. The value
denes the % change required for a change in alarm state to
occur.
The factory setting will show Set P2 which allows one to
view or change the volume of ow totalized per pulse sent to
pulse out 2. The units for Set P2 follow the units selected for
the rate display. If P2 is selected as an alarm the menus will
change to Set A2 and a Set H (hysteresis) tab is available.
The hysteresis entry is a % value. The value denes the %
change required for a change in alarm state to occur.
Set 4 input the ow rate at which 4 mA (min) output is desired.
InP
View or change the lter (set F), jitter (set J), enable
reed mode. Use the lter setting if the display is jumping
excessively due to ow conditions. Use the jitter setting to
enter a time delay to handle start up conditions. Jitter units
are seconds.
Protected Features
To enter the protected features use the left/right arrow
keys to navigate to the Pcode tab, found in the secondary
menu. Press the enter key and then enter the passcode. The
protected menu, shown below, will now be displayed. The
tabs have the following functions:
Set CD Enter a user created numerical passcode.
Lock Lock menu functions to prevent unauthorized
changes.
E/D R Disable or enable the total volume reset function.
PCNT Keeps a running tally of the number of times the
passcode has been used.
ADJ L allows the adjustment of the 4 mA and 20 mA values
so that one can tune performance of the RTI2 to match the
installed system values. The adjustment units range for
0-32? Positive values adjust the setting incrementally larger
and negative values adjust the setting incrementally lower.
Page 10
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
Page 11
TROUBLESHOOTING
Problem Probable Causes Things to try…
Display blank No power to the unit Check for minimum 12 Vdc at power terminals
Short in sensor circuit Disconnect sensor, see if display returns (zero ow
rate)
Display is in sleep mode Push any button to reactivate display. (Display goes to
sleep after about 3 minutes of non-use.)
Display missing pixels Damaged display module Contact distributor for return/replacement
RTI2 INSTRUCTIONS
Display showing meaningless
characters
Display reads normally but ow
rate incorrect
Display reads normally but
incorrect pulse output
Display reads normally, but no (or
incorrect) 4-20mA output (RTI2
only)
Display reads zero when there is
ow
Display reads ow rate when
there is none
Unit's microcontroller crashed Disconnect and reconnect power. If problem repeats,
contact distributor for return/replacement.
Wrong K-factor or time base entered Enter correct K-factor from meter, tting, or manual
Wrong pulse output setting Use "Set P" to correct pulse output setting
Polarity reversed on pulse output
terminals
Wrong 4mA setting or wrong 20mA
setting
Inadequate loop power supply voltage Check voltage (For 4-20mA applications, 24 Vdc is
Polarity incorrect in 4-20mA loop
circuit
Flow sensor failed Consult ow sensor manual for how to test
Break in ow sensor circuit Check for continuity with multimeter
Flow sensor not battery-compatible Check ow sensor model number for "micropower
Long ow sensor wire, running
parallel to power wires
Reverse leads
Use "Set 4" to correct target minimum ow rate.
Use "Set 20" to correct target top ow rate.
recommended)
Compare to Connections diagram
option"
Reroute wire or change to shielded wire
Totalizer does not always appear
to display the total ow
Dwyer Instruments, Inc. • 219.879.8868 • www.dwyer-inst.com
Flow sensor malfunction See ow sensor manual to check
Flow "jitter" (oscillating slosh) reads
as ow
Break in power to meter The totalizer's memory is only updated every 15
Consult factory for "anti-jitter" setting
minutes. If power is lost, the totalizer will retain the
value last written but will not be updated to reect any
ow between the last write and the time the power
was lost.
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Dwyer Instruments, Inc. • 102 Indiana Highway 212 • Michigan City, IN 46360 • USA
(P) 219.879.8868 • (F) 219.872.9057 • 1.800.872.9141 • www.dwyer-inst.com
LT-14301r1.1 20160301
3/1/16
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