FRC DFA400 Bedienungsanleitung
DFA400 Rev150730
1
DIGITAL
FLOWMETER
MODEL DFA400
Document Number:
XE-DFA4PM-R0A
FIRE RESEARCH CORPORATION
www.reresearch.com
26 Southern Blvd., Nesconset, NY 11767
TEL 631.724.8888 FAX 631.360.9727 TOLL FREE 1.800.645.0074
DFA400 Rev150730
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CONTENTS
Table of Contents
CONTENTS................................................................................................................ 2
INTRODUCTION ...................................................................................................... 4
Overview................................................................................................................ 4
Features.................................................................................................................. 4
Specications......................................................................................................... 5
GENERAL DESCRIPTION ....................................................................................... 6
Components ........................................................................................................... 6
Controls and Indicators.......................................................................................... 7
INSTALLATION ........................................................................................................ 8
Install Display Module........................................................................................... 8
Install Flow Sensor .............................................................................................. 10
OPERATION ............................................................................................................ 16
Datalink Interface ................................................................................................ 16
Program Features ................................................................................................. 17
TOTAL Button .................................................................................................... 17
PROGRAMMING .................................................................................................... 18
Inputs ................................................................................................................... 18
Display Module Identication Mode................................................................... 18
Program Access Mode ......................................................................................... 19
Program Code Descriptions................................................................................. 22
CALIBRATION........................................................................................................ 26
Flow Calibration, Single Point (Code 321) ......................................................... 26
Flow Calibration, Multiple Point (Code 322)...................................................... 27
WIRING.................................................................................................................... 28
Display Module ................................................................................................... 28
Flow Sensor ......................................................................................................... 29
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List of Tables
Table 1. Program Code Quick Reference ................................................................ 20
List of Figures
Figure 1. Controls and Indicators............................................................................... 7
Figure 2. Display Module Mounting Dimensions ..................................................... 8
Figure 3. Flow Sensor Location Guide................................................................... 11
Figure 4. Saddle Clamp Installation......................................................................... 13
Figure 5. Weldment Installation............................................................................... 15
Figure 6. Display Module Wiring ............................................................................ 28
Figure 7. Flow Sensor Wiring.................................................................................. 29
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INTRODUCTION
Overview
The digital owmeter has a 4-digit LED display with daylight bright digits 0.56
inch high. The meter electronics are self-contained and all program features are accessed
via pushbutton switches on the front of the display module.
The owmeter communicates with other display modules over a datalink. This
technology allows for remote displays, the display of ow rate through multiple discharges
(summing), and the totalization of ow for multiple discharges (accumulation). Flow
rate information is provided by a paddlewheel type ow sensor mounted in the discharge.
This information is processed and shown on the digital display.
There are two operator-selectable modes; display module identication and program
access. In the display module identication mode, the digital display shows the module
serial number, manufactured date, software revision, module function, and ID number.
In the program access mode the display shows program options and operator input
selections. Operator-selected modes are accessed and selections are made using two
pushbutton switches on the front of the display module.
All controls and indicators are located on the front of the display module. Controls
are simple pushbuttons.
Features
High and Low Flow Warnings
LED Display Brightness Automatically Adjusts for Day/Night Viewing
Datalink Interface for Primary/Remote Operation
Multiple Flow Rate Calibration Points
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Specications
Display Module
Supply Voltage: 9 to 30 VDC
Current: 1.5 Amps Maximum
Dimensions:
Height 3 1/4"
Width 3 1/4"
Depth 2"
Flow Sensor
Model Number: XE-MF15P
Type: Paddlewheel
Sensor Material: Acetal (Delrin) with Stainless Steel (316) Shaft
Excitation Voltage: 5 VDC
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GENERAL DESCRIPTION
Components
The owmeter kit consists of the following components:
Display Module
Paddlewheel Flow Sensor and Mounting Assembly
Cables
Display Module
The display module is waterproof and has dimensions less than 3 1/4 inches high
by 3 1/4 inches wide by 2 inches deep. All controls and indicators are located on the
front of the display module. (Refer to Controls and Indicators.)
Paddlewheel Flow Sensor
The ow sensor provides an input signal to the display module proportional to
discharge ow rate. It is mounted in the discharge piping. Placement of the sensor in the
piping is critical to obtain accurate ow rate information. Refer to Installation Section
for detailed information on mounting locations. The electrical connector is waterproof
and molded into the ow sensor housing.
Cables
A standard cable is provided. (Refer to Wiring Section.)
DFA400 Rev150730
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Figure 1. Controls and Indicators
Controls and Indicators
All controls and indicators are located on the front of the display module. (Refer
to Figure 1.)
Display
During normal operation the 4-digit LED display indicates ow rate. When the
display module identication or program access modes are selected, module specic
information, program codes, and settings are displayed. (Refer to Programming Section
for more information.)
MODE Button
The MODE button accesses the display module identication mode. It is used
with the TOTAL button to input data when in the program access mode. (Refer to
Programming Section for more information.)
TOTAL x 100 LED
This red LED is on to indicate that the display indicates total accumulated ow
and the value shown in the display is times 100.
TOTAL Button
The TOTAL button allows the operator to display total ow for a discharge. When
the button is pressed, the value shown in the digital display, times 100, is the total
ow. It is used with the MODE button to input data when in the program access mode.
(Refer to Programming Section for more information.)
MODE
Button
Display TOTALx100
LED
TOTAL
Button
DFA400 Rev150730
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INSTALLATION
Note: Plumbing systems are always unique and may cause small deviations
in the factory calibration. It is recommended that the owmeter is checked
after installation for accuracy and calibrated when necessary.
Install Display Module
Display modules are interchangeable. It is recommended to check display accuracy
if modules are swapped and calibrated when necessary.
1. Measure and mark mounting location for display module panel cutout and
mounting screw holes. Make sure there is clearance behind the panel for
the display and cables before cutting holes. Refer to Figure 2 for layout and
dimensions.
2. Cut out a 2 3/4 inch diameter hole and drill two holes (clearance or tapped)
for 10-32 mounting screws.
3. Place display module in position and secure with two screws.
4. Connect the cables and wires. (Refer to Wiring Section.)
Figure 2. Display Module Mounting Dimensions
Mounting holes are
clearance or tapped
for 10-32 screws.
3 1/4"
3 1/4"
1/4"
2"
2 3/4"
Panel Cutout
2 3/4" Diameter
2.7"
.95"
C
L
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DFA400 Rev150730
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Install Flow Sensor
There are several ways to install paddlewheel type ow sensors. Mounting options
include saddle clamps, weldments, pipe tees, and special adapters. Each mount meets
a particular plumbing requirement.
Flow sensors are interchangeable. It is recommended to check display accuracy if
sensors are swapped and calibrated when necessary.
The maximum ow sensor pressure is 600 PSI.
Flow Sensor Location
Locating the ow sensor in the plumbing system is critical. The ow of water
at and around the sensor must be laminar, or smooth, to ensure accurate ow rate
measurement. There must be enough straight pipe before the ow sensor for the water
stream to stabilize into a uniform ow. Guidelines for selecting ow sensor locations
are outlined in Figure 3.
Turbulent Water
When the ow sensor is mounted after an area in the plumbing with increased
water stream turbulence (e.g. a valve, increase in pipe diameter, etc.), stabilizing the
ow is critical. Steps should be taken to stabilize the ow. When a pipe is reduced in
diameter, the water stream tends to be squeezed into a more uniform ow. This can
help stabilize ow when there is not sufcient straight pipe up stream.
Linearizer Feature
This meter features a Linearizer function in the calibration programming. This
function should be used when the ow sensor is installed in a plumbing location
where ow is not linear. It corrects for nonlinear ow by calibrating the display
at multiple ow rates (up to 9). This provides more accurate ow rate readings.
(Refer to Calibration Section.)
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