Greyline Instruments DFM-IV Manual de usuario

USER’S GUIDE

Installation & Operation

Instructions

Doppler Flow Meter

Model DFM-IV

Manual Series A.6

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.

Available in Adobe Acrobat pdf format

DFM-IV Doppler Flow Meter

Manual Series A.6

Page 2

INDEX

Bench Test ·······················································3

Connections·······················································3

Keypad System ····················································4

Calibration Menu ··················································5

Totalizer ·························································6

Signal Strength ····················································6

Relay Status Display················································7

Password ·························································7

Units /Mode ······················································7

Calibration ·······················································8

4-20mA Current Loop···············································8

Damping ·························································8

Relay Parameters ··················································9

Special Functions ·················································10

Reset Totalizer ···················································10

Sensor Mounting··················································11

Enclosure Installation ··············································15

Synchronization ··················································16

Backflow Rejection················································17

Error/Warning Messages ···········································17

Fuse Replacement ·················································18

Troubleshooting ··················································19

Common Questions and Answers·····································22

Applications Hotline ···············································24

Product Return Procedure ···········································24

Flow Meter Data Sheet ·············································25

Warranty ·······················································26

AppendixA–Options ·············································27

Data Logger ·····················································32

RS232C Serial Output ·············································37

Specifications ····················································39

Appendix B - Conversion Table ······································40

Pipe Charts ······················································41

Calibration Record ················································44

QUICK BENCH TEST:

Connect Sensor as shown below, then Power. Test operation of the DFM-IV by holding the sensor in

one hand and rubbing your thumb or fingers briskly across the face (plastic surface) of the sensor.

Allow 15 seconds for the DFM-IV to process the signal and display a flow value.

CONNECTIONS:

POWER INPUT: The standard 115VAC model requires AC power input between 100 to 130 VAC

50/60Hz (2 amp fuse is recommended). No adjustments are necessary for voltages within this range.

Optional 230VAC requires power input between 200 to 260 VAC 50/60Hz. (See OPTIONS section of

this manual for connection of optional 12VDC or 24VDC power input).

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

relay connection wires must have conduit entry to the instrument enclosure.

Page 3

DFM-IV Doppler Flow Meter

Manual Series A.6

RCVR

N.O CN.C N.O CN.C N.O CN.C

RELAY 1 RELAY 2 RELAY 3

LNGAC

RX PU GND TX

RS 232

N.O CN.C N.O CN.C AB

RELAY 4 RELAY 5 INPUT

TMTR SYNC

4-20

OPTIONAL

VOLTAGE FREE

DRY CONTACTS

(BY CUSTOMER)

GROUND STUD

ATTACH CABLE

SHIELDS (SENSOR,

4-20mA, RS232)

THIS END ONLY

IMPORTANT

IMPORTANT:

MUST CONNECT TO A

GOOD GROUND (<1 Ohm)

WITH 12 AWG CONDUCTOR

100-130VAC (50/60 Hz)

OPTIONAL:

200-260VAC (50/60 Hz)

ALUMINUM CHASSIS

KEYPAD SYSTEM

The DFM-IV has a simple 3-button calibration

system. Operating and calibration modes are shown

on the 16-digit alphanumeric display. The keypad is

used to move around the menu to calibrate the

DFM-IV, and to view operating mode and functions.

A beep is sounded as each key is pressed. If the

keypad is not used for 10 minutes, the DFM-IV will

automatically go to RUN mode. Use the keypad to

explore the Menu and become familiar with its

features.

MENU - FLOW CHART

The following diagram shows the DFM-IV Menu system. Arrows show the three directions to leave a

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

cursor (or underline) under numerals and increase or decrease numerals with the Èand Çkeys.

At the bottom of each Menu column is a Store?Yes box. To store the calibration values permanently

(even through power failure), move the cursor under Yes and press the Èor Çkey. If the Èkey is

pressed with the cursor under Store?no changes will be stored and the system will return to the top of

the Menu column.

DFM-IV Doppler Flow Meter

Manual Series A.6

Page 4

Calibration Menu

Page 5

DFM-IV Doppler Flow Meter

Manual Series A.6

PASSWORD: 00

OPTIONAL FEATURES

SHOWS 24 Hr FORMAT

ONLY IF ENABLED

UNITS / MODE

Flow Velocity

ftinmcm

Ft3 USG USMG IG>

IMG m3 L brl

s min Hr d

Store? Yes

*** STORING ***

SPECIAL FUNCTION

DFM-IV ver 2.67

TAG 09

Date Jan 01/2000

Time 11:50:57

Reset Tot? Yes

RELAY PARAMETERS

Pulse Flow

R1 Function Off

R1on 100 ft3

R1on 100.0 ft3/s

R1 0.00

OFF ft3/s

Store? Yes

*** STORING ***

Defaults? Yes

20mA ADJ 20.000

Master Slave

New Password: 00

Com 24 48 9 1926

Store? Yes

*** STORING ***

Simul 0.00 %

4mA ADJ 4.000

Pipe ID 1.000 ft

MaxF 10.00 ft3/s

4mA @ 0.00 %

20mA @ 100.0 %

*** STORING ***

CALIBRATION

Damping 10 %

Store? Yes

Tot: 1098 ft3

RUN

Relays: 1 2 3

24 HR LOG

Jan 01/2000 ->

Daily TOTAL

Daily AVERAGE

Daily MAX Flow

MAX Flow TIME

Daily MIN Flow

MIN Flow TIME

Dec 31/1999 ->

255 Days

- no more data -

DATA LOGGING

Log Site ID 1

Session No 1

Formatted Trend

RUN STOP Setup

StartJan 01/2000

Start 03:02:16

Isnterval: 24 Hr

Interval: 12 Hrs

Isnterval: 1 Hr

Time Event

HiAlm LoAlm

At: 5.0 ft3/s

StartJan 01/2000

Start 03:02:16

Interval: 8 Hrs

Interval: 4 Hrs

Interval: 30 Sec

Interval: 10 Sec

Interval: 5 Sec

Interval: 2 Sec

Interval: 1 Sec

Interval: 30 Min

Interval: 10 Min

Interval: 5 Min

Interval: 2 Min

Interval: 1 Min

*** STORING ***

Reset Log? Yes

26640 Hrs Left

Store? Yes

WrapAround? Yes

RUN

A scrolling display shows the units selected from the units selection

column, the mode of operation (VELOCITY or FLOW), the full

scale value for the large numeric display and the TOTALIZER value.

TOTALIZER

From RUN use Èkey to display the totalizer value. The Totalizer

value is updated every 2 seconds with flow volume > 1 litre (0.264 USG). The Totalizer display will

show up to 10 digits and then overflows to 0 automatically.

Press Çkey to return to RUN.

The Totalizer can be reset by going Æto SPECIAL FUNCTIONS and Èto Reset Tot?.

SIGNAL STRENGTH

From TOTALIZER use Èkey to get to SS (Signal Strength /

Sensitivity).

Press Æto position the cursor under the numeral. Use Çor Èto

increase or decrease signal strength. Minimum setting is '1'

Maximum setting is '9'.

Signal strength should be adjusted so that the 'Signal Strength

Arrow' meets the 'Ideal Marker' under normal flow conditions.

Signal strength must pass the 'Minimum Marker' for the flow

meter to display flow.

It is normal for Signal Strength to fluctuate and rise to full scale

under high flow conditions.

DFM-IV Doppler Flow Meter

Manual Series A.6

Page 6

T: 9999999999

T: 0283168470

TOT: 0

Units: ft³, USG, IG, L

Units = m³

Current

Signal Strength

Arrow

Minimum

Marker

Ideal

Marker

SS 5

Tot: 1098 ft3

RUN PASSWORD

Relays: 1 2 3

DFM-IV Doppler Flow Meter

Manual Series A.6

Relays123(Relay Status Display)

Displays state of each Relay. 12345- Reverse character indicates that the Relay is On (energized).

24 HR LOG

DFM-IV Flow Meters with optional Data Logger will display this menu. Refer to OPTIONS section.

PASSWORD

The password (a number from 00 to 99) prevents unauthorized access to the

CALIBRATION menu.

From RUN press Æto get to PASSWORD.

Press Æto place the cursor under the digit and Èor Çto enter your password.

Factory default Password is 00.

A new password can be stored by going to SPECIAL FUNCTIONS and È

to New Password.

UNITS /MODE

Use Æto get to UNITS / MODE, then Èto get to Linear Units. Use Æto move the cursor under the

required units.

Use Èto get to Volume Units and then select units of Time and Flow or Velocity.

Flow mode displays flow rate in engineering units (e.g. gpm, litres/sec etc.)

Velocity mode displays flow velocity in units/time (e.g. ft/sec or m/sec)

When all units have been selected go to Store?then Æto Yes and Èor Çto CALIBRATION.

Page 7

PASSWORD: 00

PASSWORD: 01

UNITS / MODE

PASSWORD

Flow Velocity

ftinmcm

Ft3 USG USMG IG>

IMG m3 L brl

s min Hr d

Store? Yes

*** STORING ***

CALIBRATION

From CALIBRATION press Èto Pipe ID and Æto place the cursor under the digits and 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.

Press Æto return the cursor to Pipe ID and Èto MaxF. Set digits to the maximum flow rate in your

application. If maximum flow is unknown, enter an estimated maximum and observe actual flow to

determine the correct maximum value. (MaxF entry is required only to set 20mA output at a specific

flow rate and maximum flow in the optional data logger. MaxF setting has no effect on the DFM-IV

digital display, totalizer, or control relays).

4-20mA CURRENT LOOP

Some applications may require the 4-20mA output to be offset so that 4mA or 20mA correspond to flow

rates other than Zero and Maximum.

4mA at use Èor Çto set % output for 4mA. It is adjustable from -5% (3.8mA) up to

15% lower than the 20mA setting. Adjustment resolution is 0.05% (0.01mA).

20mA at use Èor Çto set % output for 20mA (down to 15% greater than the 4mA

setting and up to 300%). Adjustment resolution is 0.05% (0.01mA).

DAMPING

Increase damping to stabilize readings under turbulent flow conditions. Damping time shown in

percentage is the interval for a zero to full scale display change (maximum 99 percent). Factory default

is 20 percent.

DFM-IV Doppler Flow Meter

Manual Series A.6

Page 8

UNITS / MODE RELAY PARAMETERS

Pipe ID 1.000 ft

MaxF 10.00 ft3/s

4mA @ 0.00 %

20mA @ 100.0 %

*** STORING ***

CALIBRATION

Damping 10 %

Store? Yes

RELAY PARAMETERS

Set Relays 1-3 (4-5 optional) to Off , Pulse or Flow.

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 1 second and pulse duration is 350

milliseconds.

Flow press Èand set digits to the required On and Off set points. Use this feature for

flow control and alarms.

Page 9

DFM-IV Doppler Flow Meter

Manual Series A.6

RELAY PARAMETERS RELAY PARAMETERS

Pulse FlowR1 Function Off

R1on 100 ft3

R1on 100.0 ft3/s

R1 0.00OFF ft3/s

Store? Yes

*** STORING ***

CALIBRATION

SPECIAL FUNCTIONS

DFM-IV ver shows software version installed

Tag enter instrument Tag Number (0-9999)

Date (with Optional Data Logger) use the Èor Çkeys to change date as required

Time (with Optional Data Logger) use the Èor Çkeys to change time as required

Reset Tot? Yes Select Yes to reset totalizer

Defaults? Yes Press Æ3 times to select Yes. Store to erase all user settings and return

instrument to factory default settings.

Simul 0.00% exercises 4-20mA output, digital display and control relays. Simplifies

calibration of remote devices on the 4-20mA loop and checks set

point/operation of Relays calibrated in Flow mode. Go Èfor 100%.

4mA ADJ

20mA ADJ

Use to fine tune the 4mA and 20mA calibration of the 4-20mA output.

Adjustment range is +1mA to –1mA in 0.002mA steps

Important: The 4-20mA output will be forced to 4mA and 20mA respectively

during these adjustments.

Master or Slave Master or Slave selection for synchronization of multiple DFM-IV flow meters

(see Manual section SYNCHRONIZATION).

New Password position cursor under digits and set new number between 00 and 99

Com 24 48 96 192 (Optional) set the baud rate of the DFM-IV RS232 output when equipped with

an optional data logger.

DFM-IV Doppler Flow Meter

Manual Series A.6

Page 10

SPECIAL FUNCTION

DFM-IV ver 2.67

TAG 09

Date Jan 01/2000

Time 11:50:57

Reset Tot? Yes

Defaults? Yes

20mA ADJ 20.000

Master Slave

New Password: 00

Com 24 48 9 1926

Store? Yes

*** STORING ***

Simul 0.00 %

4mA ADJ 4.000

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