Greyline AVFM 6.1 User manual

www.greyline.com
USER'S GUIDE
Installation & Operation
Instructions
Area-Velocity Flow Meter
Model AVFM 6.1
Manual Series A.1

Note: This page has been left blank intentionally.

Page 3
AVFM 6.1 Area-Velocity Flow Meter
INDEX
CONNECTIONS ................................................................................................ 4
FUNCTION TEST .............................................................................................. 4
KEYPAD SYSTEM ............................................................................................ 6
CALIBRATION MENU ..................................................................................... 7
ICONS ................................................................................................................. 8
MESSAGE ICON ............................................................................................... 9
STATUS.............................................................................................................. 9
PASSWORD ..................................................................................................... 10
MENU SELECTIONS ...................................................................................... 11
UNITS/MODE .................................................................................................. 11
CALIBRATION................................................................................................ 13
RELAY PARAMETERS .................................................................................. 18
DATA LOGGING............................................................................................. 19
COMMUNICATION (OPTIONAL) .................................................................... 21
SPECIAL FUNCTIONS ................................................................................... 22
INSTALLATION – SENSOR LOCATION ..................................................... 24
ENCLOSURE INSTALLATION ..................................................................... 31
FIELD TROUBLESHOOTING ........................................................................ 32
APPLICATIONS HOTLINE ............................................................................ 35
PRODUCT RETURN PROCEDURE ............................................................... 35
APPENDIX A – OPTIONS ............................................................................... 37
MODBUS® COMMUNICATION ................................................................... 43
SPECIFICATIONS ........................................................................................... 58
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

Page 4
AVFM 6.1 Area-Velocity Flow Meter
CONNECTIONS
POWER INPUT: 100 to 240 VAC 50/60Hz. No adjustments are necessary for voltages within this
range. Connect L (Live) N (Neutral) and AC Ground.
Optional DC: 9-32 VDC. Connect to + and - terminals.
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).
FUNCTION TEST:
Connect the sensor to the sensor terminals as shown on next page, then
apply power. Allow 30 seconds for the AVFM 6.1 to initialize.
A. Place QZ02L sensor (flat to the bottom) in a bucket of water
about 6” deep and press the  programing button to view
the status page which shows level and velocity. Stir the
water to see a velocity reading.

Page 5
AVFM 6.1 Area-Velocity Flow Meter
CONNECTIONS
AC
L N
NO
C
NC
NO
C
NC
–
+
4-20mA
FLOW
RLY2
RLY1
NC C NO NC C NO NC C NO NC C NO
RLY3 RLY4 RLY5 RLY6
EXTRA RELAYS OPTION
POWER
INPUT
HEATER OPTION
SENSOR
GND
AC
GND
SERIAL COMMUNICATION OPTION
RS-485
Output
+ G
4-20mA
VELOCITY
4-20mA
LEVEL
+ +– –
BLK
SENSOR
RCVR GND GND TMTR
GR N
WHT
CORE GND

Page 6
AVFM 6.1 Area-Velocity Flow Meter
KEYPAD SYSTEM
The AVFM 6.1 uses a 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  and  keys.
To store settings permanently (even through power interruptions), press .

Page 7
AVFM 6.1 Area-Velocity Flow Meter
CALIBRATION MENU
--Password---------- Password
0000
--Units/Mode--------
Mode
Flow

Linear
in
Volume
USG
Multiplier
x1
Velocity
ft/s
Flow
USG/m
Temperature
C
USG/m
Tot 20130.8 USG Relays 1 2 3 4 5 6
0.000
--Message----------- Data Log
Logging
dLog Use
0%
Sensor Good
Temperature
24C
--Status------------

Level
0.00 ft
Velocity 0.00ft/s Flow
0.000 ft/s
Min Flow
0.000USG
Signal Strength
0%
Signal Cutoff
5%
E C 100%cho onfidence
--Menu Selections----
Units / Mode

Calibration Channel Setup Relay Parameters Data Logging Communication Special Functions Simulation Configuration
OPTIONAL FEATURES
--24 hr log------Flow
Date
Feb. 12/20

10
50138 USG Total
34.82 USG/m Average
52.20 USG/m Maximum
11:08:00 Max Time
0.000 USG/m Minimum
9:15:00 Min Time
--24 hr log-----Level
Date
Feb. 12/20

10
0.000ft Average 0.000ft Maximum
11:08:00 Max Time
0.000ft Minimum 9:15:00 Min Time
--24 hr log--Velocity
Date
Feb. 12/20

10
0.000ft/s Average 0.000ft/s Maximum
11:08:00 Max Time
0.000ft/s Minimum
9:15:00 Min Time
--Relay Parameters--
Relay
1

Function
Flow /min On
1000 USG
/min Off
0.000 USG
--Special Functions-
Language
English

Analog Out
4-20mA
Backlight
High
Reset Totalizer
NO
Neg. Totals
NO
Rev. Flow
Off
Capture Par
No
Capture WF
No
Restore Defaults
NO
New Password
0000
--Data Logging-------
Log Site ID
0

Mode
Flow
File Format
.LG2
Date
Feb 9 27/201
Time
11:27:40
Interval
10sec
Data Log
Logging
--Configuration-----
Serial#
000012345

Utility
4 .11.2 .0
Sonar 1.31.1
Doppler
1. 1.11
24 Logger 1. T
6 Relays
Analog Out
3
-- -----Channel Setup-

Type
Round
0.75ftPipe ID --Simulation--------

Test
Actual
Level
0.00in
Velocity
10ft/s
Flow
1982.88USG/m
4-20mA Level
20.00
4-20mA Velocity
20.00
4-20mA Flow
20.00
Relays 1 2 3 4 5 6 --Communication-----
Protocol
Modbus
Address
001
BPS
9600
Parity
Even
Stop Bits
1
* Menu only appears if "New Password" has been changed from 0000 in "Special Functions" menu.
*
--Calibration-------

Range
Max
180.00 in
Min
8.00 in
Level
Max
180.00 in
Min
1.00 in
20mA
180.00 in
4mA
0.00 in
Velocity
20mA
10.00 ft/s
4mA 0.00 ft/s
Flow
Min
0.00 gal/m
20mA
500.00 gal/m
4mA 0.00 gal/m
Lvl Offset
0.00 in
Signal Cutoff
10 %
Damping
Velocity
10 %
Level
10 %
LOE Time
30 sec
Cal Constant
1.000

Page 8
AVFM 6.1 Area-Velocity Flow Meter
ICONS
Echo OK (PZxx series level sensor option).
Echo . loss
3.2.1.
No Echo (PZxx series level sensor option).
1. 2. Message waiting. Press .
Data logging .off
1. 2. Data logging .on
1. 2. 3. 4. USB file download.
File download completed.
Download Error.
Echo OK.
Dry sensor. No water in pipe/channel.
3.2.1.

Page 9
AVFM 6.1 Area-Velocity Flow Meter
MAIN DISPLAY
The main display shows the units selected from the Units/Mode menu,
Flow or Velocity rate being measured, TOTALIZER and RELAY states. The
AVFM 6.1 will start-up with this display.
MESSAGE ICON
Press  from the main display to view temperature measurement, status of the
data logger and error/warning messages provided by the instrument. The
Message Icon will appear on the main display if error messages are being
generated by the instrument. Press  to return to the main display.
STATUS
Press  from the MAIN display to view instrument status.
Level Displays the measured level in units selected in the
Units/Mode menu.
Velocity Displays the measured velocity in units selected in the
Units/Mode menu.
Flow Displays the flow rate in units selected in the
Units/Mode menu. The flow is calculated based on the
individual level and velocity data, and the channel
shape and size programmed in the Channel Setup menu.
Min Flow Displays a read-only value of the minimum flow cutoff.
Any flow rate measured below this Min Flow will be
displayed as 0 on the LCD display.
Signal Strength Displays the strength of the received Doppler velocity
signal on a 0-100% scale.
Signal Cutoff Displays a read-only value for signal cutoff. If the
Signal Strength is less than the Signal Cutoff, velocity
will be reported as 0. This setting may need to be
adjusted in case of unstable velocity measurements with
no water moving, or when high levels of industrial
noise are present. The Signal Cutoff can be adjusted in
the Calibration menu.
USG/m
Tot 20130.8 USG
Relays 1 2
0.000
--Message-----------
Data Log Logging
dLog Use 0%
Sensor Good
Temperature 24C
--Status------------

Level 0.00 ft
Velocity 0.00ft/s
Flow 0.000 ft/s
Min Flow 0.000USG
Signal Strength 0%
Signal Cutoff 5%
E cho Confidence 100%

Page 10
AVFM 6.1 Area-Velocity Flow Meter
--Status------------

Level 0.00 ft
Velocity 0.00ft/s
Flow 0.000 ft/s
Min Flow 0.000USG
Signal Strength 0%
Signal Cutoff 5%
E cho Confidence 100%
STATUS (cont.)
Echo Confidence Displays the confidence of level measurement received
from the QZ02L submerged sensor, or PZ15 level
sensor, on a 0-100% scale. This value is a reflection of
the percent of echoes received from pulses. Example: If
8 pulses are sent from the level sensor and only 4
echoes are received, Echo Confidence will report 50%.
This does not mean that the level is inaccurate, but
instead means the level reading could be susceptible to
a loss of reading should the conditions causing missed
pulses gets worse. Like an increase in solids or bubbles
in the flow steam.
24 HR LOG
Press  from the MAIN display to view a formatted flow report from instruments
with a built-in data logger. Press  to pan through Flow, Velocity and
Level summaries. Press  to scroll down one day or repeatedly to scroll to a
specific date. Up to 365 days can be stored for Flow, Level, and Velocity. Newest
date will overwrite the oldest. Press  to return to the main display.
Inserting a USB drive into the meter while on this screen will transfer 24 HR Log
data to the USB drive in .csv format.
PASSWORD
The Password (a number from 0000 to 9999) prevents unauthorized access to the
Calibration menu.
From the Main Display press the  key to get to Password. Factory default
password is 0000 and if it has not been changed, this screen will be bypassed
completely.
A new password can be stored by going to the Special Functions New
Password menu.
If a user password is required, press  to place the cursor under the first digit and
 or  to set the number, then  to the second digit, etc. Press  or  to
proceed
to the Menu Selections screen.

Page 11
AVFM 6.1 Area-Velocity Flow Meter
MENU SELECTIONS
The Menu selections page is used to navigate to specific menus which are
described in more detail on the following pages.
Press  or  to navigate to different menus, and  to enter the selected menu.
UNITS/MODE
At Mode, press the  and then the  or  to select Flow or Velocity. Flow
mode displays the flow rate in engineering units (e.g. gpm, litres/sec, etc.) Press
the  to store your selection then the  to the next menu item.
At Linear press the  key and then the  or  to select your units of
measurement. The Linear units define what units the pipe/channel dimensions and
level reading will be displayed in. Typically inches or mm is selected. Press the 
to store yo
ur selection then the

to the next menu
item
.
At Volume, press the

and then the

or

to select units for volume. Note:
“bbl” denotes US oil barrels. Press the  to store your selection then the  to the
next menu item.
At Multiplier, press the

and then the

or

to select the totalizer
multiplier. Multipliers are used when resolution down to single digit is not
required, or when you don’t want to convert from gallons to thousands of gallons,
as an example. Press

to store your selection then

to the next menu item.
At Velocity, press the

and then the

or

to select the engineering
units for flow velocity and sonic velocity of the fluid. Press  to store your
selection then

to the next menu item.
At Flow, press the

and then the

or

to select the engineering units for
flow rate. Press

to store your selection then

to the next menu item.
--Menu--------------
Units / Mode

Calibration
Relay Parameters
Data Logging
Communication
Special Functions
Simulation
Configuration

Page 12
AVFM 6.1 Area-Velocity Flow Meter
Available Flow Rate Engineering Units:
Abbreviation Description Abbreviation Description
USG/d US gallons per day L/d liters per day
USG/h US gallons per hour L/h liters per hour
USG/m US gallons per minute L/m liters per minute
USG/s US gallons per second L/s liters per second
ft3/d cubic feet per day m3/d cubic meters per day
ft3/h cubic feet per hour m3/h cubic meters per hour
ft3/m cubic feet per minute m3/m cubic meters per minute
ft3/s cubic feet per second m3/s cubic meters per second
bbl/d barrels per day (1 bbl = 42 USG) IG/d Imperial gallons per day
bbl/h barrels per hour (1 bbl = 42 USG) IG/d Imperial gallons per day
bbl/m
barrels per minute (1 bbl = 42 USG)
gal)
IG/d Imperial gallons per day
bbl/d
barrels per second (1 bbl = 42 USG)
gal)
IG/d Imperial gallons per day
USMG/d US million gallons per day IMG/d Imperial million gallons per day
USMG/h US million gallons per hour IMG/h Imperial million gallons per hour
USMG/m US million gallons per minute IMG/m Imperial million gallons per minute
USMG/s US million gallons per second IMG/s Imperial million gallons per second

Page 13
AVFM 6.1 Area-Velocity Flow Meter
CALIBRATION
Range
Max
Only shown when the level sensor used is a through-air PZ
type. Max range should be set as the distance from the face of
the PZ sensor to the zero level reference point of the
pipe/channel it is installed above. See drawing below.
Min Only shown when the level sensor used is a through-air PZ
type. Min range should be set as the distance from the face of
the PZ sensor to the maximum water level of the pipe/channel
it is installed above. The water in the pipe/channel should get
no closer than 8 inches for a PZ15-LP sensor type. See
drawing below.
SUNSCREEN
SENSOR
MaxRg
Range
MinRg > dead band
Level
Max
For QZ02L (submersible, default) level sensor, set the
maximum height the level should reach in the system, in units
configured in the Units/Mode menu. If a Round pipe is
selected in the Channel Setup menu, then this value should be
set to the same value as the inside diameter.
Min For QZ02L (submersible, default) level sensor, set the
minimum height the level should reach in the system, in units
configured in the Units/Mode menu. Minimum level for the
QZ02L sensor is 1 inch, however, this value could be set to a
larger value if you want to ignore levels greater than 1 inch.
20mA Set the 20mA value for the level analog output, in units
configured in the Units/Mode menu.
--Calibration-------

Range
Max 180.00 in
Min 8.00 in
Level
Max 180.00 in
Min 1.00 in
20mA 180.00 in
4mA 0.00 in
Velocity
20mA 10.00 ft/s
4mA 0.00 ft/s
Flow
Min 0.00 gal/m
20mA 500.00 gal/m
4mA 0.00 gal/m
Lvl Offset 0.00 in
Signal Cutoff 10 %
Damping
Velocity 10 %
Level 10 %
LOE Time 30 sec
Cal Constant 1.000

Page 14
AVFM 6.1 Area-Velocity Flow Meter
CALIBRATION (cont.)
4mA Set the 4mA value for the level analog output, in units
configured in the Units/Mode menu.
Velocity
Min
Only shown when Mode = Velocity in the Units/Mode menu.
When measured velocity is less than the Min Velocity, the
reading on the LCD display and output signals will report 0.
20mA Set the 20mA value for the velocity analog output, in units
configured in the Units/Mode menu.
4mA Set the 4mA value for the velocity analog output, in units
configured in the Units/Mode menu.
Flow
Min Only shown when Mode = Flow in the Units/Mode menu.
When measured flow is less than the Min Flow, the reading on
the LCD display and output signals will report 0.
20mA Set the 20mA value for the flow analog output, in units
configured in the Units/Mode menu.
4mA Set the 4mA value for the flow analog output, in units
configured in the Units/Mode menu.
Lvl Offset For the QZ02L sensor only. Set to 0.00 when sensor is
mounted at the bottom of a channel/pipe. When the sensor is
mounted above the floor, in order to avoid having the sensor
become coated with debris, enter the distance between the
floor and the bottom of the sensor.
--Calibration-------

Range
Max 180.00 in
Min 8.00 in
Level
Max 180.00 in
Min 1.00 in
20mA 180.00 in
4mA 0.00 in
Velocity
20mA 10.00 ft/s
4mA 0.00 ft/s
Flow
Min 0.00 gal/m
20mA 500.00 gal/m
4mA 0.00 gal/m
Lvl Offset 0.00 in
Signal Cutoff 10 %
Damping
Velocity 10 %
Level 10 %
LOE Time 30 sec
Cal Constant 1.000

Page 15
AVFM 6.1 Area-Velocity Flow Meter
CALIBRATION (cont.)
Signal
Cutoff Adjust the setting in percent to suppress industrial noise from
potentially being read as Doppler signals. When Signal
Strength is less than Signal Cutoff, the velocity measurement
will report 0.00 on the LCD display.
Damping
Velocity
Set the dampening value for the velocity reading. Lower
values provide fast response to changing velocities, and higher
values provide a slower response. A value of 0 disables
dampening. Factory default value is 10%.
Level Set the dampening value for the level reading. Lower values
provide fast response to changing levels, and higher values
provide a slower response. A value of 0 disables dampening.
Factory default value is 10%.
LOE Time Should the level reading be lost because of air or debris in the
system, the LOE Time will cause the meter to hold the last
valid level reading until the LOE Time is expired, at which
point the meter will produce a Loss of Echo alarm message.
Having a LOE Time in the meter means that intermittent air or
debris issues in the system will not cause the meter to lose
flow reading. If you desire that the meter respond quickly to a
Loss of Echo, set the
LOE Time
to a low value.
Cal
Constant Used to scale the velocity output of the meter. Factory default
is 1.000.
--Calibration-------

Range
Max 180.00 in
Min 8.00 in
Level
Max 180.00 in
Min 1.00 in
20mA 180.00 in
4mA 0.00 in
Velocity
20mA 10.00 ft/s
4mA 0.00 ft/s
Flow
Min 0.00 gal/m
20mA 500.00 gal/m
4mA 0.00 gal/m
Lvl Offset 0.00 in
Signal Cutoff 10 %
Damping
Velocity 10 %
Level 10 %
LOE Time 30 sec
Cal Constant 1.000

Page 16
AVFM 6.1 Area-Velocity Flow Meter
CHANNEL SETUP
Round Select Round for open pipes. Set Pipe ID to the inner
diameter of the pipe.
Rectangle Select Rectangle for rectangular channels. Enter the
channel width.
Trapezoid Select Trapezoid for trapezoidal shaped channels.
Specify the Width and Slope of the channel as shown
in the following illustration.
Egg Select Egg for Egg shaped channels. Enter the Height
of the channel.
-- -----Channel Setup-

Type Round
0.75ft Pipe ID

Page 17
AVFM 6.1 Area-Velocity Flow Meter
CUSTOM CHANNELS
Reset Data Old data MUST be removed before entering data for a new
channel. Press  then press  to Yes and press  to clear
old data.
Max Height Enter the maximum height of the channel.
Division Divide the maximum height into equal increments (maximum
of 40) and enter this division value (example 1”, 1 cm etc.)
Increment # Enter the increment number if you want to edit a previous
entry or to skip entering widths for some levels (Note: The
custom channel will interpolate widths between entry points).
Width Enter the measured width of the channel at the level shown
(Note: To enter 0 width you must press  and then  to store
a 0 width data point).
Level Displays the level of the channel for each increment and width
entry.
Note:
Custom channel data in equal width increments with variable height
measurements must be converted to the format shown above using the “Channel
Data Translat
o
r” PC software.

Page 18
AVFM 6.1 Area-Velocity Flow Meter
RELAY PARAMETERS
Relay Press  and  or  to select a relay (2 relays are standard, 4
additional are optional).
Function Press  or  to select Off, Pulse, Flow,
Velocity or Level.
Pulse Set digits to the flow volume per relay pulse. Use this feature
for remote samplers, chlorinators or totalizers. Minimum time
between pulses is 2.25 seconds and pulse duration is 350
milliseconds.
Flow
On Position the cursor under the numerals and press  or  to set
digits to the relay On set point.
Off Set digits to the Off set point.
Velocity
On Position the cursor under the numerals and press  or  to set
digits to the relay On set point.
Off Set digits to the Off set point.
Level
On Position the cursor under the numerals and press  or  to set
digits to the relay On set point.
Off Set digits to the Off set point.
LOE Mode Specify the state of the relay for loss of echo condition:
Off
,
On
or
Hold
.
Press

to return to
Menu Selections

Page 19
AVFM 6.1 Area-Velocity Flow Meter
DATA LOGGING
Press  or  to position curser at Data Logging, and  to enter. Use  or  to
position cursor before each menu item and to enter. When settings are
completed press  to store and  again to return to the Main Menu.
Log Site ID Enter a number from 00 to 99. The site ID will become part of
the downloaded file name to help distinguish downloads from
different instruments. Press  to store the setting.
File Format Choose .LG2 to download data in .lg2 format for viewing on
Greyline Logger software. Choose .CSV to download data in
.csv format for import directly to Excel. This menu option can
be changed at any time without adversely affecting existing
data.
Date Press , and  or  to scroll and select Month, Day and
Year. Press  to store the setting.
Time Press , and  or  to select the current time in Hours,
Minutes and Seconds. Press  to store the setting.
Interval Press  or  to select the logging interval. Press  to store
the setting. Greyline recommends choosing an interval which
will give you as much resolution as required and no more.
Choosing too often of an interval for what is required will
result in larger data files, which may take a long time to
download to USB. Reference page 15 for specific download
times. In critical installations, data should be downloaded
often.
Data Log Stop, Start or Delete the log file. Press  or  to select Delete
and  to delete the log file. Press  or  to select Start and 
to start the logger.
Important Note: You MUST Delete an old log and Start a new log AFTER
having made changes to Log Site ID, Mode, Date, Time and/or Interval for those
changes to be applied.
Important Note: Changing any of the parameters in the Units/Mode menu will
start a new log. It is recommended that you Delete and start a new log after
changing any Units/Mode settings.
View 24-hr formatted Reports on the AVFM 6.1 display. Press  from the main
display to view a formatted flow report from instruments with a built-in data
logger. Press  to pan through Level, Velocity and Flow
summaries. Press  to 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 
to return to the ma
in display.
--Data Logging-------
Log Site ID 0

Mode Flow
File Format .LG2
Date May 18/2018
Time 11:27:40
Interval 10sec
60min
30min
15min
10min
5min
2min
1min
30sec
Data Log Stop
Start
Delete

Page 20
AVFM 6.1 Area-Velocity Flow Meter
RETRIEVING LOG FILE
Plug a USB Flash Memory Drive (one is included with the AVFM 6.1) into the
USB output port on the Panel of the meter. The instrument display will show the
data download icon until the log file is transferred to the memory card. The USB
flash drive may be removed when the icon for download successful appears.
Download file names will appear in this format:
Tag is set according to the Log Site ID entered in the instrument Data
Logging menu.
Download letter will be A for the first download from an instrument. B for the
second, then C etc. At the letter Z a - character will appear indicating that the
maximum number of downloads for that instrument are on the USB flash drive.
Older files can be erased or moved from the flash memory drive or a new memory
drive can be used.
Note: Downloading files in .lg2 format will take approximately 35 seconds per
1% of internal log memory used.
Downloading files in .csv format will take approximately 8 minutes per 1%
of internal log memory used.
OPENING .LG2 FILES
Install Greyline Logger on your PC or laptop. Select File/Open/Instrument Log
(.log) to open the log file from your USB flash drive. Greyline Logger software is
available on Greyline’s website, www.greyline.com. Data can also be converted
to .CSV via Greyline Logger software.
OPENING .CSV FILES
Use a datasheet program such as Microsoft Excel® to import data in a comma
delimited format. Use Excel to manipulate or graph data.
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