Greyline Instruments DFM 5.0 Manuale utente

USER'S GUIDE

Installation & Operation

Instructions

Doppler Flow Meter

Model DFM 5.0

Manual Series A.8.1

Note: This page has been left blank intentionally.

IMPORTANT NOTE: This instrument is manufactured and calibrated to meet product specifications.

Please read this manual carefully before installation and operation. Any unauthorized repairs or

modifications may result in a suspension of the warranty.

If this product is not used as specified by the manufacturer, protection may be impaired.

Available in Adobe Acrobat pdf format

Page 3

DFM 5.0 Doppler Flow Meter

INDEX

Connections ......................................................4

Keypad System ....................................................6

Calibration Menu ..................................................7

Message .........................................................8

Status............................................................8

Password .........................................................9

Units/Mode ......................................................10

Calibration ......................................................11

Relay Parameters .................................................12

Special Functions .................................................13

Sensor Mounting..................................................15

Enclosure Installation ..............................................19

Synchronization ..................................................20

Troubleshooting ..................................................21

Common Questions And Answers ....................................24

Applications Hotline ...............................................26

Product Return Procedure ...........................................27

Warranty ........................................................29

Flow Meter Data Sheet .............................................28

Warranty ........................................................29

Appendix A – Options .............................................30

Data Logger .....................................................36

Specifications ....................................................38

Appendix B - Conversion Table ......................................39

Pipe Charts ......................................................40

CONNECTIONS:

POWER INPUT: The standard model requires AC power input between 100 to 240 VAC 50/60Hz . No

adjustments are necessary for voltages within this range.

Optional DC input model requires 9-32 VDC/7 Watts. Connect to + and −terminals. Connect L (Live)

N (Neutral) and AC Ground.

Optional Thermostat and Heater modules are available rated for 115 VAC or 230 VAC.

IMPORTANT NOTE: To comply with CSA/UL electrical safety standards, AC power input and relay

connection wires must have conduit entry to the instrument enclosure. Installation requires a switch,

overcurrent fuse or circuit breaker in the building (in close proximity to the equipment) that is marked

as the disconnect switch.

Risk of electric shock. Loosen cover screw to access connections. Only qualified personnel

should access connections.

Note: Use of instrumentation over 40°C ambient requires special field wiring.

Note: User replaceable fuse is 2 Amp 250V (T2AL250V).

Page 4

DFM 5.0 Doppler Flow Meter

!

CONNECTIONS

Page 5

DFM 5.0 Doppler Flow Meter

L

NHEATER OPTION

AC

LN

RCVR

GND

TMTR

GND

–+

SYNC

NO

C

NC

NO

C

NC

–

+

4-20mA (1)

RLY2

RLY1

AC

GROUND

TRANSDUCER

GND

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

RLY3 RLY4 RLY5 RLY6

EXTRA RELAYS OPTION

POWER

INPUT

KEYPAD SYSTEM

The following diagram shows the DFM 5.0 menu system. Arrows show the four directions to leave a

menu box. Pressing a corresponding keypad arrow will move to the next item in the direction shown.

Move the cursor (underline) under numerals and increase or decrease numerals with the Çand Èkeys.

To store calibration values permanently (even through power interruptions), press the ü.

DFM 5.0 Doppler Flow Meter

Page 6

CALIBRATION MENU

Page 7

DFM 5.0 Doppler Flow Meter

--Password----------

Password 0000

--Data Logging-------

>Log Site ID 0

Mode Flow

Set Date Feb 18/2007

Set Time 11:27:40

Interval 10sec

Reset Log NO

--Units/Mode--------

>Mode Flow

Linear in

Volume USG

Time min

--Calibration-------

>20mA at 2500.0 USG/m

4mA at 0.000 USG/m

Pipe ID 12.00in

Damping 20%

--Relay Parameters--

>Relay 1

Function Flow

Mode Pump

On 1000 USG

Off 0.000 USG

USG/min

Tot 20130.8 USG

Relays 123456

0.000

--Message-----------

Data log Logging

Log Use 0%

Sensor Good

--24 hr log----------

>Date Feb. 12/2008

Total 0.000ft/s

Average 0.000ft/s

Maximum 0.000ft/s

Max Time 01:57:00

Minimum -1.046ft/s

Min Time 02:35:00

--Status------------

>Velocity 0.00ft/s

Tot 0.000USG

Signal Cutoff 5%

Signal Strength 0%

Sig Confidence 0

Relays123456

20mA at

--Special Functions-

>Language English

Backlight On High

Reset Totalizer NO

Negative Totals NO

Reverse Flow NO

Cal Constant 1.000

Restore Defaults NO

New Password 0000

--Simulation--------

>Output 250USG

4-20mA 5.60mA

Relays 1 23456

--Configuration-----

>Utility Board 1.01

Doppler 1.02

Logger 1.03T

Relays 2

4-20 Outputs 1

--Menu Selections----

>Units / Mode

Calibration

Relay Parameters

Data Logging

Special Functions

Simulation

Configuration

OPTIONAL FEATURES

RUN

The main display shows the units selected from the Units/Mode menu,

Flow or Velocity rate being measured, TOTALIZER and RELAY states.

The DFM 5.0 will start-up with this display and will return to this screen

after a timeout if keys are not pressed in other menus.

MESSAGE

Press Çfrom the RUN display to view status of the data logger and

error/warning messages provided by the instrument. The word Message

will appear on the RUN display if error messages are being generated by

the instrument. Refer to the manual section Error/Warning Messages for a

description. Press üto return to the main display.

STATUS

Press Èfrom the RUN display to view instrument status. Velocity will be

displayed in ft/sec or m/sec.

Tot Displays the current totalizer reading.

Signal Cutoff Adjust the setting in percent to suppress flow readings

at zero flow when fluid swirling or pipe vibration may cause the

instrument to continue reading. Example: Signal Cutoff at 5% will force

the display and outputs to zero when signal strength drops below 5%.

Signal Strength Displays percentage of signal being received by the

ultrasonic sensor.

Sig Confidence This indicates consistent or widely varying flow rates

and helps gauge the quality of the velocity signal in the application.

Relays Energized relays will display as a white character on a black

background.

20mA at Displays the flow rate set as 20mA in the Calibration menu.

Press üto return to the main display.

Page 8

DFM 5.0 Doppler Flow Meter

--Message-----------

Data log Logging

Log Use 0%

Sensor Good

--Status------------

>Velocity 0.00ft/s

Tot 0.000USG

Signal Cutoff 5%

Signal Strength 0%

Sig Confidence 0

Relays123456

20mA at

USG/min

Tot 20130.8 USG

Relays 123456

0.000

24 HR LOG (Data Logging option only)

Press Åfrom the RUN display to view a formatted flow report from

instruments with a built-in data logger. Press Èto scroll down one day or

repeatedly to scroll to a specific date. Up to 365 days can be stored.

Newest date will overwrite the oldest. Press üto return to the main

display.

PASSWORD

The password (a number from 0000 to 9999) prevents unauthorized access

to the Calibration menu.

From the Run display press the Ækey to get to Password. Factory

default password is 0000 and if it has not been changed press the üto

proceed to the Menu Selections screen.

If a password is required, press Æto place the cursor under the first digit

and Èor Çto set the number, then Æto the second digit, etc. Press Æor

üto proceed to the Menu Selections screen.

A new password can be stored by going to Special Functions/New

Password.

Page 9

DFM 5.0 Doppler Flow Meter

--Password----------

Password 0000

--24 hr log----------

>Date Feb. 12/2008

Total 0.000ft/s

Average 0.000ft/s

Maximum 0.000ft/s

Max Time 01:57:00

Minimum -1.046ft/s

Min Time 02:35:00

UNITS/MODE

From >Mode press the Æand then the Çor Èto select Flow or

Velocity. Flow mode displays the flow rate in engineering units (e.g.

gpm, litres/sec, etc.) Press the üto store your selection then the Èto the

next menu item and Æto enter.

From >Linear press the Ækey and then the Çor Èto select your units

of measurement. Press the üto store your selection.

Press the Èkey to move the >symbol to each subsequent menu item and

the üto save your selections.

Note: the volume selection "bbl" denotes U.S. oil barrel.

Press Åor üto return to the Menu Selections screen.

Page 10

DFM 5.0 Doppler Flow Meter

--Units/Mode--------

>Mode Flow

Linear in

Volume USG

Time min

--Units/Mode--------

Mode Flow

>Linear i

ft

m

mm

n

--Units/Mode--------

>Volume US

ft3

bbl

L

m3

IMG

IG

USMG

G

--Units/Mode--------

Mode Flow

Linear in

Volume USG

>Time se

day

hr

min

c

CALIBRATION

Press the Èto >Calibration and Æto enter. Use Èor Çto position

>before each menu item and Æto enter. When settings are completed

press üto store and return to the Calibration menu

20mA at Press Æthen Èor Çto change the numbers and decimal point.

Use this menu to set the corresponding flow rate that will be represented

by 20mA analog output. If maximum flow is unknown, enter an estimated

flow rate and observe actual flow to determine the correct maximum

value. Any velocity or flow rate up to +40 ft/sec (12.2 m/sec) may be

selected.

4mA at Press Èor Çto set the flow rate corresponding to 4mA analog

output. This setting may be left at zero flow (or velocity or can be raised

to any value less than the 20mA setting, or lowered to any velocity or

corresponding flow rate down to -40 ft/sec (-12.2 m/sec).

Pipe ID Place the cursor under the digits and then Èor Çto change the

numbers and decimal point. Pipe ID should be entered as the exact

inside diameter of the pipe where the sensor is mounted. Refer to the Pipe

Charts Appendix in this manual for inside diameter of common pipe types

and sizes.

Damping - Increase damping to stabilize readings under turbulent flow

conditions. Decrease for fast response to small changes in flow. Damping

is shown in percentage (maximum is 99%). Factory default is 20%.

Press üfrom the Units/Mode display to return to Menu Selections.

Page 11

DFM 5.0 Doppler Flow Meter

--Calibration-------

>20mA at 2500.0 USG/m

4mA at 0.000 USG/m

Pipe ID 12.00in

Damping 20%

RELAY PARAMETERS

Relay Press Æand Èor Çto select a corresponding relay

number (2 relays are standard, 4 additional are optional).

Function Press Èor Çto select Off,Pulse or Flow.

Flow Mode Select Pump,Low Alarm or Hi Alarm.

Pump mode provides separate On/Off settings where the

relay will energize at one flow rate and de-energize at

another.

On Position the cursor under the numerals and press Èor

Çto set digits to the required relay On set point.

Off set digits to the required Off set point.

Low Alarm mode relay will energize at a programmable

flow rate and remain energized with flow below the set

point. When flow rises above the set point, the relay will

de-energize.

Hi Alarm mode relay will energize at a programmable

flow rate and remain energized with flow above the set

point. When flow falls below the set point, the relay will

de-energize.

Pulse Press Èand set digits to the flow volume increment

required between relay pulses. Use this feature for remote

samplers, chlorinators or totalizers. Minimum time

between pulses is 2.25 seconds and pulse duration is 350

milliseconds.

Return to Relay and change settings for each relay

number.

Press üto return to Menu Selections.

Page 12

DFM 5.0 Doppler Flow Meter

--Relay Parameters--

>Relay 1

Function Flow

Mode Pump

On 1000 USG

Off 0.000 USG

DATA LOGGING (OPTIONAL)

Refer to Options section of this manual.

SPECIAL FUNCTIONS

Language Select English,French or Spanish

Backlight Select On High,Medium or Low for continuous

backlight.

Select Key Hi/Lo for high backlight for 1 minute after a keypress and

then Lo backlight until a key is pressed again.

Select Key High,Med or Low for backlight for 1 minute after a keypress

and then backlight off until a key is pressed again.

Reset Totalizer Press Æand select Yes to erase and restart the

totalizer at zero.

Negative Totals Select Yes to have reverse flow readings deducted

from the totalizer. Select No to totalize forward flow only and ignore

reverse flow.

Reverse Flow Select Yes to change the display from positive or

negative values (e.g. sensor mounted in a direction that shows normal flow

as negative values. Use Reverse Flow to change readings to positive

values.)

Cal Constant Set to 1.000 for SE4-A transducer. (Note: Different

transducer models require specific Cal Constants.)

Restore Defaults Select Yes and press üto erase all user settings

and return the instrument to factory default settings.

New Password Select any number from 0000 to 9999 and press ü.

Default setting of 0000 will allow direct access to the calibration menus.

Setting of any password greater than 0000 will require the password to be

entered to access the calibration menus.

Press üto return to Menu Selections.

Page 13

DFM 5.0 Doppler Flow Meter

--Special Functions-

>Language English

Backlight On High

Reset Totalizer NO

Negative Totals NO

Reverse Flow NO

Cal Constant 1.000

Restore Defaults NO

New Password 0000

--Special Functions-

Language English

>Backlight On Hig

On Med

On Low

Key Hi/Lo

Key High

Key Med

Key Lo

Off

h

SIMULATION

Exercises the 4-20mA output, digital display and control relays (does not

affect the totalizer or optional data logger).

Output Press Æand then Èor Çto change the simulated output. Press

üto begin simulation. The 4-20mA output and relay states will be

displayed on the screen below.

Press the üto terminate simulation and return to the Menu

Selections screen.

Page 14

DFM 5.0 Doppler Flow Meter

--Simulation--------

>Output 250USG

4-20mA 5.60mA

Relays 1 23456

SENSOR MOUNTING LOCATION

The position of the sensor is one of the most important considerations for accurate Doppler flow

measurement. The same location guidelines apply to Doppler as most other types of flow meters.

Before permanently mounting a Doppler sensor onsite testing is recommended to determine optimum

mounting position. Use the sensor coupling compound (supplied with each Greyline flow meter, or

petroleum gel, acoustic compound or electrocardiograph gel). Take several readings around the axis of

the pipe and then at several points upstream and downstream from the selected position, checking for

consistent readings. Avoid high or low reading areas. Mount the sensor where consistent (average)

readings were obtained or continue testing on another pipe section.

VERTICAL OR HORIZONTAL PIPE - Vertical pipe

runs generally provide evenly distributed flow. On

Horizontal pipes and liquids with high concentrations

of gas or solids, the sensor should be mounted on the

side (3 or 9 o’clock position) to avoid concentrations

of gas at the top of the pipe, or solids at the bottom.

For liquids with minimal gas bubbles (e.g. potable

water) the sensor should be mounted on the top of a

horizontal pipe (12 o’clock position) to obtain the best

signal strength.

VELOCITY INCREASING DEVICES: Generally the sensor must be mounted away from flow

disturbances such as valves, pumps, orifice plates, venturis or pipe inlets and discharges which tend to

increase flow velocity. Velocity increasing devices often cause cavitation, or rapid release of gas

bubbles, and readings both up and downstream may show much higher velocity. As a guideline, mount

the sensor at least 20 diameters upstream or 30 diameters downstream from velocity increasing devices.

Required distance from a velocity increasing device will vary in applications depending on the flow

velocity and the characteristics of the liquid itself.

TURBULENCE INCREASING DEVICES: Elbows,

flanged connections and tees tend to introduce

desirable conditions of an evenly distributed flow

profile with some air or gases entrained in the flow.

Sensor mounting 6 pipe diameters upstream and 10

diameters downstream from these disturbances is

generally optimum.

The sensor is designed to mount longitudinally on a straight section of pipe. Do not attempt to mount it

on bends, elbows or fittings.

Page 15

DFM 5.0 Doppler Flow Meter

VERTICAL PIPE USUALLY

HAS EVENLY DISTRIBUTED FLOW

12 O'CLOCK POSITION WITH

LOW GAS CONTENT

3 O'CLOCK POSITION WITH HIGH

GAS OR SOLIDS CONTENT

FLOW

SENSOR MOUNTS 6 DIAMETERS

UPSTREAM OR 10 DOWNSTREAM

FROM AN ELBOW

SENSOR MOUNTING

Prepare an area 2" wide by 4" long (50mm x 100mm) for sensor bonding by removing loose paint, scale

and rust. The objective of site preparation is to eliminate any discontinuity between the sensor and the

pipe wall, which would prevent acoustical coupling.

A PC4 Sensor Mounting Kit is supplied with each Greyline flow meter. It includes recommended

coupling compound in a plastic applicator and a stainless steel mounting bracket with adjustable pipe

straps.

Page 16

DFM 5.0 Doppler Flow Meter

PIPE

Mount the PC4 pipe clamp as illustrated on pipes

0.6" / 15 mm OD or larger. Stainless steel bands are

included for mounting on pipes up to 32" / 81 cm OD.

Additional stainless steel bands (by customer) may be

combined to mount on pipes up to 180" / 4.5 m OD.

END VIEW

SENSOR

ADJUSTABLE

STAINLESS

STEEL STRAP

PIPE

SENSOR

PIPE

SENSOR COUPLING

For permanent or temporary bonding, the following are recommended:

a) Dow Corning silicon compound #4 (supplied)

Additional supply: order Greyline Option CC

b) High Temperature compound (supplied with Sensor Option SE3H)

Additional supply: order Greyline Option AP-1W

c) Water-based sonic compound: Order Greyline Option CC30

d) Electrocardiograph gel

e) Petroleum gel (Vaseline)

The above are arranged in their order of preferred application.

d & e are only good for temporary bonding at room temperature.

DO NOT USE: Silicon RTV caulking compound (silicon rubber).

Use the PC4 pipe clamp (supplied) as illustrated above or

use a loop of electrical tape for temporary mounting.

Apply silicon coupling compound #4 to the coloured face

of the sensor. A bead, similar to toothpaste on a

toothbrush, is ideal. Do not overtighten (crush the

sensor).

The sensor must be fixed securely to the pipe with coupling material

between the sensor face and the pipe. Sensor installation with

excessive coupling compound can result in gaps or voids in the

coupling and cause errors or loss of signal. Insufficient coupling

compound will create similar conditions.

Over time temporary coupling compounds (e.g. Petroleum Gel) may

gradually sag away from the sensor resulting in reduced signal

strength and finally complete loss of signal. Warm temperatures, moisture and vibration will accelerate

this process. Dow Corning Silicone Compound #4 as supplied with the DFM 5.0 (and available from

Greyline Instruments) is recommended for semi-permanent installations.

Page 17

DFM 5.0 Doppler Flow Meter

COMPOUND

SENSOR

TAPE OR

CLAMP

C

O

MP

O

UND

PIPE

SENSOR

SENSOR MOUNTING/COUPLING RECOMMENDATIONS

Page 18

DFM 5.0 Doppler Flow Meter

BAD G

OO

D

ENCLOSURE INSTALLATION

Locate the enclosure within 20 ft (6 m) of the sensor (500 ft -150 m optional). The enclosure can be wall

mounted with the four mounting screws (included) or panel mounted with Option PM Panel Mount kit

from Greyline Instruments.

Avoid mounting the enclosure in direct sunlight to protect the electronics from damage due to

overheating and condensate. In high humidity atmospheres, or where temperatures fall below freezing,

Option TH Enclosure Heater and Thermostat is recommended. Seal conduit entries to prevent moisture

from entering enclosure.

NEMA4X (IP66) WITH CLEAR COVER

1. Open hinged enclosure cover.

2. Insert #8 screws (supplied) through the four enclosure mounting holes

to secure the enclosure to the wall or mounting stand.

Additional conduit holes can be cut in the bottom of the enclosure when

required. Use a hole saw or Greenlee-type hole cutter to cut the required

holes.

DO NOT make conduit/wiring entries into the top of the enclosure.

Note: This non-metallic enclosure does not automatically provide grounding between conduit

connections. Grounding must be provided as part of the installation. Ground in accordance with the

requirements of the National Electrical Code. System grounding is provided by connecting grounding

wires from all conduit entries to the steel mounting plate or another point which provides continuity.

CLEANING

Cleaning is not required as a part of normal maintenance.

Page 19

DFM 5.0 Doppler Flow Meter

END VIEW

COVER

ENCLOSURE

MOUNTING

HOLES

SYNCHRONIZATION

Synchronization may be required to prevent interference (readings with no flow or "cross talk") in

applications where more than one DFM 5.0 Doppler sensor is used in close proximity. Synchronize

DFM 5.0 flow meters only if sensors from separate DFM 5.0 flow meters are mounted on the same pipe.

To synchronize one or more DFM 5.0 flow meters use twisted, shielded pair cable, 22AWG or heavier.

Connect SYNC + of one DFM 5.0 to the SYNC + of the next unit. And connect SYNC - of one DFM

5.0 to the SYNC - of the next unit, etc. Connect shield to Transducer GND on all units as illustrated

below.

No changes in DFM 5.0 hardware setup or software are required. The instruments manage

synchronization connections automatically.

Page 20

DFM 5.0 Doppler Flow Meter

–+

SYNC

TRANSDUCER

GND

–+

SYNC

TRANSDUCER

GND

–+

SYNC

TRANSDUCER

GND

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