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- Page 1 DFA400 Rev0708 Document Number: XE-DFA4PM-R0A DIGITAL FLOWMETER MODEL DFA400 FIRE RESEARCH CORPORATION www.fireresearch.com 26 Southern Blvd., Nesconset, NY11767 TEL ( 631 ) 724-8888 FAX ( 631 ) 360-9727 TOLL FREE 1-800-645-0074...
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Page 2: Table Of Contents
DFA400 Rev0708 CONTENTS Table of Contents CONTENTS ........................ 2 INTRODUCTION ...................... 4 Overview ........................ 4 Features ........................4 Specifications ......................5 GENERAL DESCRIPTION ..................6 Components ......................6 Controls and Indicators ..................7 INSTALLATION ......................8 Install Display Module ..................8 Install Flow Sensor .................... - Page 3 DFA400 Rev0708 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.
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Page 4: Introduction
DFA400 Rev0708 INTRODUCTION Overview The digital flowmeter 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 flowmeter communicates with other display modules over a datalink. -
Page 5: Specifications
DFA400 Rev0708 Specifications Display Module SupplyVoltage: 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... -
Page 6: General Description
DFA400 Rev0708 GENERAL DESCRIPTION Components The flowmeter 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. -
Page 7: Controls And Indicators
DFA400 Rev0708 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 flow rate. When the display module identification or program access modes are selected, module specific information, program codes, and settings are displayed. -
Page 8: Installation
DFA400 Rev0708 INSTALLATION Note: Plumbing systems are always unique and may cause small deviations in the factory calibration. It is recommended that the flowmeter 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. - Page 9 DFA400 Rev0708 This page intentionally left blank.
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Page 10: Install Flow Sensor
DFA400 Rev0708 Install Flow Sensor There are several ways to install paddlewheel type flow 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. -
Page 11: Figure 3. Flow Sensor Location Guide
DFA400 Rev0708 Flow Sensor Location Guide The preferred location for mounting a flow sensor is on the top half of the pipe. The best orientation is vertical. If the sensor is mounted on the bottom of the pipe, it may be susceptible to dirt Best Orientation accumulation impacting operation. - Page 12 DFA400 Rev0708 Saddle Clamp Installation Note: Ensure that the mounting location meets the requirements for uniform water flow. (Refer to Flow Sensor Location Guide.) Note: Ensure that there is enough room for the saddle clamp, sensor, and connector to fit. (Refer to Figure 4.) 1.
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Page 13: Figure 4. Saddle Clamp Installation
DFA400 Rev0708 Retainer Note: When the retainer cap is tightened make sure the flow sensor engages the alignment O-Ring tab and does not rotate. Paddlewheel Flow Sensor Note: Allow a minimum of Alignment 2 inches clearance above the sensor for connector removal/ installation. - Page 14 DFA400 Rev0708 Weldment Installation Note: Ensure that the mounting location meets the requirements for uniform water flow. (Refer to Flow Sensor Location Guide.) Note: Ensure that there is enough room for the weldment, sensor, and connector to fit. (Refer to Figure 5.) 1.
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Page 15: Figure 5. Weldment Installation
DFA400 Rev0708 Retainer Pipe Size Dimension (Sch 40) 1.95 to 1.80 1.95 to 1.80 O-Ring 1.90 to 1.75 1.88 to 1.73 Paddlewheel 1.88 to 1.73 Flow Sensor 1.85 to 1.70 Measurements are in inches. Tru-Seal Make sure that the alignment tab Locknut is centered on the pipe centerline. -
Page 16: Operation
DFA400 Rev0708 OPERATION On power-up the flowmeter is in normal operating mode. Information from a paddlewheel type flow sensor or from the datalink interface is processed and displayed. When a display is set as a remote, it receives all pressure and flow information via the datalink. -
Page 17: Program Features
DFA400 Rev0708 Program Features See Programming Section for more detailed information. High and Low Flow Warning (Codes 315 and 316) When the flow rate is above the programmed high flow value, a flashing -HI- is shown in the digital display. When the flow rate is below the programmed low flow value, a flashing -LO- is shown in the digital display. -
Page 18: Programming
DFA400 Rev0708 PROGRAMMING The program access mode is selected and inputs are made using the two pushbutton switches on the front of the display module. The digital display shows stored data and operator inputs. (Refer to Figure 1.) Note: When entering codes in the program access mode there is a time-out feature that requires an operator input every three seconds. -
Page 19: Program Access Mode
DFA400 Rev0708 Program Access Mode To gain access to the program features a three-digit program code must be entered. Review the Program Code Descriptions or refer to Table 1. Program Code Quick Reference for the proper three-digit code. Note: There is a time-out feature that returns the program to normal operation in five seconds if input is not detected. -
Page 20: Table 1. Program Code Quick Reference
DFA400 Rev0708 Table 1. Program Code Quick Reference CODE FEATURE OPTION Flow Rate Increment Set Point 0000 to 9999 ID Number 0 to 99 Module Function Pri, SLA High Flow Warning 0001 to 9999 0 = Disabled Low Flow Warning 0001 to 9999 0 = Disabled Totalizer Reset... - Page 21 DFA400 Rev0708 This page intentionally left blank.
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Page 22: Program Code Descriptions
DFA400 Rev0708 Program Code Descriptions When a valid three-digit program code has been entered, a program value or option shows in the display. The MODE and TOTAL buttons are used change the data. Press the MODE button to select the digit to be change. The digit flashes. Press the TOTAL button to change the digit or the option choice. - Page 23 DFA400 Rev0708 Code 316 Low Flow Warning Factory programmed value: 0 (Low flow warning is disabled.) Options: 0001 to 9999 This code sets the low flow warning. When the flow rate is below the low flow warning programmed value, the flow display alternately flashes between the flow rate and -LO- .
- Page 24 DFA400 Rev0708 Code 321 Flow Calibration (Single Point) Factory programmed value: Precalibrated to Pipe Size Options: 1 Calibration Point This code starts the calibration program for a single flow rate. Refer to Calibration Section. Code 322 Flow Calibration (Multiple Point) Factory programmed value: No Values Entered Options:...
- Page 25 DFA400 Rev0708 Error Code E202 An invalid program code has been entered. Re-enter the program code when the digital display resets. Error Code E204 There is no signal from the sensor. This code is displayed only when in a calibration program.
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Page 26: Calirbration
DFA400 Rev0708 CALIRBRATION The flowmeter is precalibrated and tested at the factory. Plumbing systems are always unique and may cause small deviations in the factory calibration. It is recommended that the flowmeter is checked after installation for accuracy and calibrated when necessary. -
Page 27: Flow Calibration, Multiple Point (Code 322)
DFA400 Rev0708 Flow Calibration, Multiple Point (Code 322) This function is used when the flow sensor is installed in a difficult plumbing location where flow is not linear. It corrects for nonlinear flow to provide an accurate flow rate display. Select calibration points (up to 9) that are within the most commonly used range. -
Page 28: Wiring
DFA400 Rev0708 WIRING The following figures include wiring and cable information. Display Module A remote display module requires four (4) wires, power (pins 1 and 2) and the datalink connection (pins 7 and 8) to the primary display. A remote display must be programmed with the same ID number as the primary display. -
Page 29: Flow Sensor
DFA400 Rev0708 Flow Sensor Flow Sensor (Top View) Supply Voltage Signal Output Sensor Cable from Ground 8-Pin Connector Sensor Cable 3-Pin Connector Pin/Wire Description A/Black Ground B/Red Supply Voltage C/White Signal Figure 7. Flow Sensor Wiring...
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