Greyline Instruments AVFM-II User Manual

USER’S GUIDE

Installation & Operation

Instructions

Area-Velocity Flow Meter

Model AVFM-II

Manual Series A.10

Note: This page has been left blank intentionally.

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

INDEX

Function Test ·····················································4
Connections ······················································4
Keypad System ···················································4
Menu - Flow Chart·················································5
Run·····························································7
Totalizer ························································8
Password ························································8
Units / Mode ·····················································9
Calibration - for Open Channel Flow··································12
Sensor Cleaning Instructions ········································24
Relay Parameters ·················································14
Special Functions ·················································15
Sensor Location ··················································17
Enclosure Installation··············································21
Field Troubleshooting ·············································23
Sensor Cleaning Instructions ········································24
Applications Hotline ··············································25
Product Return Procedure ··········································26
Warranty ·······················································27
Appendix A - Options ·············································28
Data Logger ·····················································34
RS232C Serial Output ·············································40
Conversion Guide ················································42
Specifications····················································43

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 3

AVFM-II Area-Velocity Flow Meter

BAD

GOOD

L

N

G

AC

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 12 AWG CONDUCTOR

100-130VAC (50/60 Hz)

OPTIONAL:
200-260VAC (50/60 Hz)

* * *

N.O

C

N.C

N.O

C

N.C

RELAY 1

RELAY 2

RXPUGND

TX

RS 232

4 - 20

FLOW

4 - 20

VLCTY

GROUND STUD

IMPORTANT:
ATTACH ALL CABLE
SHIELDS (SENSOR
AND 4-20mA)
THIS END ONLY

*

TDCR.3

TDCR.1

TDCR.2

WHT

STRIPE

GRN

STRIPE

(VELOCITY)

NO STRIPE

(LEVEL)

4 - 20

LEVEL

Manual Series A.10

INTRODUCTION:

The Greyline AVFM-II Area Velocity Flow Meter measures open channel flow in pipes and other
channels. Flow calculation is based on the formula: Q = V x A. Q is flow, V is velocity, and A is the
cross-sectional area of flow volume in the pipe or channel.

The AVFM-II measures both level and velocity continuously. Level readings plus the user-entered
diameter or channel width are used to calculate the cross-sectional area. Combined with velocity
readings the AVFM-II measures the flow rate.

FUNCTION TEST:

Connect the sensor to the TDCR terminals as shown below, then
apply power. Allow 30 seconds for the AVFM-II to initialize.

A. Place QZ02L sensor (flat to the bottom) in a bucket of

water about 6” deep and select Level mode (from

UNITS/MODE menu) to see a level reading.

B. Select Velocity mode and stir the water to see a

velocity reading.

CONNECTIONS:

POWER INPUT: The standard model
requires AC power input between
100-130VAC 50/60Hz (2 amp fuse is
recommended). No adjustments are
necessary for any voltage in this range.
Optional 230VAC requires power
input between 200-260VAC 50/60Hz.
(See OPTIONS section of this manual
for connection of optional 9-36VDC
power input).

IMPORTANT NOTE: To comply with
CSA/NRTL standards, AC power
input and relay connection wires must
have conduit entry to the instrument
enclosure.

Page 4

KEYPAD SYSTEM

The AVFM-II 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 AVFM-II, and to
view operating mode and functions. A
beep is sounded as each key is pressed.
If the keypad is not used for 2 minutes,
the AVFM-II will automatically go to

RUN mode (scrolling display). Use the

keypad to explore the Menu and
become familiar with its features.

MENU - FLOW CHART

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

The following diagram shows part of the AVFM-II 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 to increase or decrease the number with the È Ç keys.

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 È or Ç key. If the È key is
pressed with the cursor under Store? no changes will be stored and the system will return to the top of
the Menu column.

Page 5

PASSWORD: 00

OPTIONAL FEATURES

RUN

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 -

AVFM-II - CALIBRATION MENU

Velocity:0.00ft/s

Level: 0.000 ft

CALIBRATION

DATA LOGGING

Log Site ID 1

Session No 1

Formtd Trend LVT

RUN STOP Setup

StartJan 01/2000

Start 03:02:16

Interval: 24 Hrs

Interval: 12 Hrs

Interval: 1 Hrs

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

Store? Yes

CHANNEL SETUP

Round

Width

Width

UNITS/MODE

ft in m cm

Range

Store? Yes

ft3 USG USMG

IG IMG m3 L

s min hr d

Chan ID

Square

Level Flow Velocity

Trapezd

Slope

Egg

Height

MaxV 10.00 ft/s

MaxF 10.000 ft3/s

MinRg 1.333 ft

MaxRg 32.00 ft

Damping 20 %

Store? Yes

MaxLvl 3.000 ft

MinLvl 0.125 ft

Relays:1 2

Tot:

SC

v

EC 8

SPECIAL FUNCTION

AVFMII V 2.86

RELAY PARAMETERS

Pulse

R1 Function Off

R1on 0.00 ft3

Flow

R1 on 0.00 ft3/s

R1 OFF 0.00 ft3/s

R1 LOE Off

On

Store? Yes

Hold

Tag 01

Date May 31/1999

Time 23:39:51

View Codes? Yes

1234567890123456

LOE Time 30 s

Reset Tot? Yes

Temp 20.3 Cº

Min Temp 20.0 Cº

Max Temp 23.0 Cº

DISPLAY C Fºº

Cal Const

Velocity

Level

Flow

Velocity

R1 on 0.00 ft

R1 OFF 0.00 ft

Pulse

R2 Function Off

R2on 0.00 ft3

R2 on 0.00 ft3/s

R2 OFF 0.00 ft3/s

R2 LOE Off

On

Hold

Level

R2 on 0.00 ft

R2 OFF 0.00 ft

ISB?: No Yes

Defaults? Yes

Simul 0.00%

New Password: 00

Com 96 192

Store? Yes

LvlOFFSET 0.000ft

AVFM-II Area-Velocity Flow Meter

Current

Signal Confidence

Arrow

SC

Current

Echo Strength

Arrow

Minimum

Marker

EC 8

PASSWORD: 00

RUN

Velocity:0.00ft/s

Level: 0.000 ft

Relays:1 2

Tot:

SC

v

EC 8

Manual Series A.10

RUN

A scrolling display shows the units selected from the UNITS/MODE
column, the maximum value in the mode being displayed (Level,

Flow or Velocity), the Totalizer value, and the logging status if

that option is enabled.

LEVEL READING

From RUN use È to view Level. View the level of fluid measured by the instrument.

VELOCITY READING

From RUN use ÈÈ to view Velocity. View the velocity of fluid measured by the instrument.

ECHO CONFIDENCE - Level

From RUN use ÈÈÈ to view Echo Confidence, EC. This indicator
displays the echo strength for the level measurement.

SIGNAL CONFIDENCE - Velocity

From Run use ÈÈÈÈ to view Signal Confidence, SC. This indicates
consistent or widely varying flow rates and helps gauge the quality of the
velocity signal in the application.

Page 7

AVFM-II Area-Velocity Flow Meter

T: 9999999999

T: 0283168470

TOT: 0

TOT: 0

Units: ft³, USG, IG, L

Units = m³

PASSWORD: 00

PASSWORD: 00

PASSWORD: 10

13 2

Manual Series A.10

TOTALIZER

From RUN use È or Ç keys to display Tot: value. The Totalizer value is updated every 2 seconds
with flow volume > 1 litre (0.264 USG). The display will show up to 10 digits and then restart at 0
automatically.

Press È or Ç keys to return to RUN.

The totalizer can be reset to zero by going to SPECIAL FUNCTION and È to Reset Tot?.

RELAY STATUS DISPLAY

Press È from Tot: to RELAYS 1,2.
Energized relays will be displayed in reverse type RELAYS:

PASSWORD

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

CALIBRATION menu.

From RUN (scrolling display) press Æ to PASSWORD.

Press Æ to place the cursor under the digits and È or Ç to change the
number and then Æ to proceed to CALIBRATION.

Factory default Password is 00. A new password can be stored by going Æ to SPECIAL FUNCTION
and È to New Password.

Page 8

AVFM-II Area-Velocity Flow Meter

DATA LOGGING

CHANNEL SETUP

UNITS/MODE

ft in m cm

Store? Yes

ft3 USG USMG

IG IMG m3 L

s min hr d

Range

Level Flow Velocity

Manual Series A.10

UNITS / MODE

Press Æ to UNITS/MODE, then È . Press Æ to move the cursor under the required measurement units:

ft - feet
in - inches

m - meters

cm - centimeters

% - percent

Press È to Level Flow Velocity > Range. Use Æ to select the operating mode of the AVFM-II.

Level mode measures water level above the calibrated zero level.
Flow mode is for open channel flow in pipes or rectangular channels. Displays flow in

engineering units.

Velocity mode displays flow velocity in units/time (eg: ft/sec/ or m/sec).
Range mode displays distance from the sensor to the liquid surface like a tape measure. (PZ12-LP

option only)

Press È to make your selection.

ft3 - cubic feet
USG - US gallons

USMG - US million gallons (FLOW only)

IG - Imperial gallons

IMG - Imperial million gallons (FLOW only)

m3 - cubic meters

L - liters

Press Æ to position the cursor underneath your selection and press È to make your selection.

Repeat for selection of time units:

s - seconds

min - minutes

hr - hours

d - day

Note: The AVFM-II will display Er:ILLEGAL UNITS if your choice of Units exceeds a maximum
value of 9,999,999. Use US MGD, Imp MGD or m3/d so that Units will be 9,999,999 or less. Press È
to Store and Æ to Yes. Then press È or Ç to store all your UNITS/MODE selections.

Page 9

AVFM-II Area-Velocity Flow Meter

R

3R

R/2

2R

HEIGHT

= 3R

CALIBRATION

Store? Yes

CHANNEL SETUP

Round

Width

Width

UNITS/MODE

Chan ID

SquareTrapezd

Slope

Egg

Height

Manual Series A.10

CHANNEL SETUP

From CHANNEL SETUP press È to Round Egg Trapezd Square.

Round Select Round for open pipes. Press È to Chan ID and Æ to edit the channel/pipe inside

diameter. Use È and Ç to change the numbers and decimal point.

Egg Select Egg for channels with cross-section dimensioned as shown. Press È to Height

and Æ to edit the channel height. Press Ç and È to change numbers and decimal point.

Page 10

AVFM-II Area-Velocity Flow Meter

TRAPEZOIDAL

CHANNEL

RUNWIDTH

RISE

Manual Series A.10

Trapezoid Select Trapezd for trapezoidal shaped channels. Press È and enter Width and È and

enter Slope

SLOPE = RISE

RUN

e.g.#1 WIDTH

RUN

RISE

SLOPE = RISE

RUN

=
=
=

24"
10"
12"

e.g.#2 WIDTH

RUN

RISE

= 1.2 SLOPE = RISE

RUN

=
=
=

1 m

0.35 m

0.5 m

= 1.429

Note - V shaped channels may also be monitored where the channel width is entered as 0.

Square Select Square for rectangular channels. Press È to Width and Æ to edit the channel

width. Use È and Ç to change the numbers and decimal point.

When channel type and all units have been selected press È to Store? and then Æ to Yes and È or Ç
to CALIBRATION.

Page 11

AVFM-II Area-Velocity Flow Meter

RELAY PARAMETERS

CHANNEL SETUP

CALIBRATION

MaxV 10.00 ft/s

MaxF 10.000 ft3/s

MinRg 1.333 ft

MaxRg 32.00 ft

Damping 20 %

Store? Yes

MaxLvl 3.000 ft

MinLvl 0.125 ft

LvlOFFSET 0.000ft

Manual Series A.10

CALIBRATION

From CALIBRATION press È to MaxF. Enter the maximum expected flow in your application. If the
maximum expected flow is unknown, enter an estimated value.

Note: MaxF entry is only required to calibrate 20mA output at your maximum flow rate.

Press È to MaxV. Enter the maximum expected flow velocity in your application. If the maximum
velocity is unknown, enter an estimated value, e.g. 10 ft/s.

Note: MaxV entry is only required to calibrate velocity at 20mA output and to set the maximum

velocity measured in LVT logging mode.

Press È to LvlOFFSET. Set to 0.00 when sensor is mounted on the floor of the channel. When sensor
is mounted above the floor of the channel enter the distance between channel floor and bottom of sensor.

SENSOR ELEVATED
ABOVE FLOOR OF
PIPE OR CHANNEL

SENSOR

U-SHAPE STAINLESS STEEL
18 GA. RECOMMENDED
HEIGHT AS REQUIRED

TOP VIEW

SENSOR

USE THE MB-QZ
STAINLESS STEEL
MOUNTING BRACKET
(SUPPLIED)

SIDE VIEW

END VIEW

Page 12

AVFM-II Area-Velocity Flow Meter

SENSOR

ZERO
LEVEL

MAX
RANGE

MAX LEVEL

MIN
RANGE

OPTIONAL PZ12-LP
ULTRASONIC LEVEL SENSOR

Manual Series A.10

Press È to MinLvl. Minimum level threshold. When the fluid “head” drops below MinLvl the flow
measurement is forced to zero. MinLvl can be set between 1” and 6” (25.4 and 152.4 mm) above

LvlOFFSET setting.

Press È to MaxLvl. Enter the maximum expected level in your application. If the maximum level is
unknown, enter an estimated value, e.g. 6 ft.

Note: MaxLvl entry is only required to calibrate the level at 20mA output and to set the maximum

level measured in LVT logging mode.

MinRg /MaxRg menu items will only appear in the calibration menu with optional PZ12-LP non-

contacting ultrasonic sensor.

MinRg - is distance from the optional PZ12-LP

sensor to the highest water level (must be ³ 8"/203
mm). Use È and Ç to enter the minimum range.

MaxRg - is distance from the PZ12-LP sensor to the

zero water level (must be £ 12'/3.66 m).

Press È to Damping. Default setting is 2% to allow quick set-up of the instrument. 20% should be
ideal for most applications. Increased damping (up to 99%) slows the AVFM-II's response to turbulence
and will smooth the display and outputs under turbulent conditions. Decrease damping to minimize
response time for fast level or velocity changes. Minimum setting is 0%.

Press È to Store? and Æ to Yes to save your settings. Press È or Ç to Relay Parameters.

Page 13

AVFM-II Area-Velocity Flow Meter

CALIBRATION

SPECIAL FUNCTION

RELAY PARAMETERS

Pulse

R1 Function Off

R1on 0.00 ft3

Flow

R1 on 0.00 ft3/s

R1 OFF 0.00 ft3/s

R1 LOE Off

On

Hold

Velocity

Level

Flow

Velocity

R1 on 0.00 ft

R1 OFF 0.00 ft

Pulse

R2 Function Off

Level

Manual Series A.10

RELAY PARAMETERS

Each relay can be individually calibrated. Press È to R Function and Æ to select: Off Æ Pulse Æ

Flow Æ Velocity Æ Level.

Off mode means the relay will not be energized

Pulse

Flow

Velocity

Level

Press È and set digits to the flow volume increment required between relay pulses. Use
this feature for remote samplers, chlorinators or totalizers. Maximum pulse setting is
999,999. Minimum time between pulses is 1 second and pulse duration is 350
milliseconds. Selection of Level mode disables this function.

Press È to select flow mode for the relay, then R1on. Use È and Ç to set the On flow
rate to energize the relay.

R1Off use È and Ç to set the Off set point. Selection of Level mode will disable this

function.

Press È to select velocity mode for the relay, then R1on. Use È and Ç to set the On
flow velocity to energize the relay.

R1Off use È and Ç to set the Off flow velocity. Selection of Level mode will

disable this function.

Press È to select level mode for the relay, then R1on. Use È and Ç to set the On level
to energize the relay.

R1Off Use È and Ç to set the Off level.

R1 LOE. Press Æ to select Off Æ On Æ Hold. In a loss of echo condition the relay

will turn off (de-energize), on (energize) or hold its current state. Each relay can be
individually configured. Press È.

Press È to Store? Yes and Æ to Yes. Press Ç or È to save your Relay settings.

exactly the same value, then set LOE to On mode. The relay will now energize only
when a level echo loss condition occurs.

To calibrate a relay in level mode for echo loss only, set the relay On and Off points to

Page 14

SPECIAL FUNCTIONS

SPECIAL FUNCTION

AVFMII V 2.86

Tag 01

Date May 31/1999

Time 23:39:51

View Codes? Yes

1234567890123456

LOE Time 30 s

Reset Tot? Yes

Temp 20.3 Cº

Min Temp 20.0 Cº

Max Temp 23.0 Cº

DISPLAY C Fºº

Cal Const 1.000

ISB?: No Yes

Defaults? Yes

Simul 0.00%

New Password: 00

Com 96 192

Store? Yes

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

Page 15

AVFM-II V2.86 shows software version installed

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

View Codes? Yes

Select Yes and then È to display an instrument performance code. Faults
detected by the instrument are stored in the code and will be requested by
Greyline if you call for service or assistance.

Tag Enter Instrument Tag number (0-9999)

Date JUN 01/2004

(with optional Data Logger) Press Æ and Ç or È to change Month, Day
Year.

Time HH:MM:SS

(with optional Data Logger) Press Æ and Ç or È to change Hours, Minutes,
Seconds

LOE TIME

Press Æ and Ç or È to change the number of seconds without receiving level
signal echo before the AVFM-II displays ECHO LOSS, and Control relays
change state as calibrated under Relay Parameters.

Factory default is 30 seconds and is recommended for most applications,
Minimum is 10 seconds and maximum is 60 seconds.

Cal Const XXXX Set to 1.000 for QZ02L transducer. (Note: Different transducer models

require specific Cal. Constants.)

Reset Tot? Yes

(FLOW mode only) Position the cursor under Yes to reset the totalizer. Store
this selection at the Store? Yes prompt.

Temp 25.0°C

Indicates current temperature at the sensor head. Press Æ to Min Temp and
Æ to Max Temp to display the minimum and maximum temperatures the

AVFM-II has sensed. Press Æ to Display °C °F. Position the cursor under °C
for celcius display or °F for Farenheight display. Press È to return to Temp.

ISB?: No Yes Select Yes only when the instrument is equipped with an optional Intrinsic

Safety Barrier for sensor mounting in hazardous locations. This setting
compensates for the electrical characteristics of an Intrinsic Safety Barrier.

Defaults? Yes

Press Æ 3 times to select Yes. Store to erase all user settings and return
instrument to factory default settings.

Simul The Output simulation function controls all 4-20mA outputs, the digital

display and control relays. Use it to simplify calibration of remote devices
such as chart recorders or remote displays, and to test Relay set-points.
Simulation digits are shown as a percentage of full scale. Use the Ç and È
Arrow keys to simulate 0% (4mA), 100% (20mA), and increments of .05%
(.008mA). Increments will automatically accelerate when the Ç or È is
continuously pressed.

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

Com 96 192 Optional (with Data Logger) Speed of RS-232C transmission. Select 9600

or 19200 baud rate (must be set to match baud rate in ‘Greyline Logger’
software and any modems used for serial communication).

Page 16

AVFM-II Area-Velocity Flow Meter

FASTEN SENSOR
CABLE TO PIPE OR
CHANNEL WITH
METAL CLIPS OR
TIE WRAPS

SENSOR

END VIEW

MB-QZ
MOUNTING
BRACKET

TOP VIEW

FLOW

SIDE VIEW

FASTEN MOUNTING
BRACKET WITH A
SET SCREW

INSERT SENSOR INTO
MOUNTING BRACKET

QZ02L
VELOCITY/LEVEL
SENSOR

FLOW

Manual Series A.10

INSTALLATION - SENSOR LOCATION

1. Choose a sensor mounting location where silt or deposits are least likely to accumulate.

2. For best results flow should be evenly distributed across the channel and relatively free of turbulence.
(The AVFM-II is very effective at averaging level and velocity readings in turbulent conditions, but best
accuracy and response time is achieved with evenly distributed flow.)

3. Avoid vertical drops, obstructions or elbows immediately up and downstream from the sensor. Locate
the QZ02L sensor at least 10 times maximum Head (level) and 10 times the channel width from these
flow disturbances.

QZ02L VELOCITY-LEVEL SENSOR MOUNTING

Mount the QZ02L sensor with the
stainless steel bracket and hardware
supplied. Ensure that the sensor is parallel
to the water surface (check with a level).
Mount with the tapered end of the sensor
pointing upstream and the sensor cable
pointing downstream.

Clip or tie wrap the sensor cable securely
to the pipe or channel wall.

Page 17

AVFM-II Area-Velocity Flow Meter

GOOD

BAD

SENSOR

END VIEW

Manual Series A.10

E

ND

VI

E

W

SE

NSOR

SENSOR

SENSOR

FLOW

SENSOR

S

E

N

SO

R

FLOW

SENSOR

END VIEW

Page 18

SENSOR

END VIEW

AVFM-II Area-Velocity Flow Meter

DETAIL

BAND ADJUSTMENT

JACK

VSJ PIPE MOUNTING BAND

BAND
ADJUSTMENT JACK

SENSOR MOUNTING

BRACKET

Manual Series A.10

OPTIONAL PIPE BAND MOUNTING WITH QZ02L SENSOR

Install the stainless steel pipe band with the sensor
mounting bracket at the invert (bottom) of the pipe. Ensure
that the sensor bracket is parallel to the water surface
(check with a level). Mount so the tapered end of the
sensor will point upstream and the sensor cable will point
downstream. (Turn the ¼” hex nut clockwise to expand the
bracket and secure to the pipe wall by friction fit.)

Insert the sensor into the mounting bracket and clip or tie wrap the sensor cable securely to the stainless
steel pipe band as illustrated.

OPTIONAL QZ02L-DP VELOCITY SENSOR MOUNTING

Mount the velocity sensor at the bottom of the channel or pipe in a position where it will be
continuously submerged. The QZ02L-DP velocity sensor does not have to be exactly parallel to the
water surface. Position where silt or solids will not build-up on the sensor.

Page 19

AVFM-II Area-Velocity Flow Meter

WATER

PZ12-LP

PZ12-LP MANHOLE MOUNTING

PZ12-LP SENSOR

MB12 - MOUNTING BRACKET

Manual Series A.10

OPTIONAL PZ12-LP LEVEL SENSOR MOUNTING

Mount the PZ12-LP non-contacting ultrasonic level sensor in an unobstructed position at least 8” (203.2
mm) above the high water level. Install the stainless steel mounting bracket in a horizontal position
(check with a level) and then insert the PZ12-LP sensor.

QZ02L-DP VELOCITY SENSOR

PZ12-LP PIPE MOUNTING

PZ12-LP

WATER

Page 20

AVFM-II Area-Velocity Flow Meter

END VIEW

COVER

ENCLOSURE

ENCLOSURE

MOUNTING

HOLES

Manual Series A.10

ENCLOSURE INSTALLATION

Locate the enclosure within 500 ft (150 m) of the sensor. It can be wall mounted with four mounting
screws (supplied) or panel mounted with Option PM Panel Mounting 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 and washers through the four enclosure
mounting holes to secure enclosure to wall or mounting stand.

3. Close cover.

Additional conduit holes can be cut in the end of the enclosure
when required. Use a hole saw or Greenlee-type hole cutter to cut
the required holes.

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.

Page 21

ERROR/WARNING MESSAGES

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

"ECHO LOSS"

No level echoes received within the LOE TIME setting. (See SPECIAL

FUNCTION menu.) In Level mode the AVFM-II will hold the display

and outputs at the last reading until a new echo is received. In FLOW mode
it will display 0.00 and totalization will stop until an echo is received.

Er: ILLEGAL MinRg With optional PZ12-LP level sensor only. The value entered for MinRg

(Minimum Range) is less than 8" (20.3 cm). MinRg must be greater than
or equal to 8" (20.3 cm)

Er: ILLEGAL UNITS Your choice of UNITS exceeds a maximum value of 9,999,999. Use US

MGD, Imp MGD or m3/d so that UNITS will be 9,999,999 or less.

Err:ILLEGAL SPAN The value entered for MaxRg is the same or less than MinRg +2".

Maximum range must be greater than minimum range.

- or -

(on the large display)

ERR: ILLEGAL
SETPOINTS

Your choice of Units exceeds 9,999,999. Use USMG/d, IMG/d or m3/d
so that Units will be 9,999,999 or less

ON or OFF setpoint is < MinRg or > MaxRg

!! SENSOR OPEN ! Instrument has detected sensor connection/cable Open.

! SENSOR SHORTED ! Instrument has detected sensor connection/cable Shorted.

Page 22

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

FIELD TROUBLESHOOTING

The AVFM-II uses an ultrasonic level sensor to determine channel AREA and an ultrasonic Doppler
sensor to measure flow VELOCITY.

The QZ02L transducer combines both sensors in one housing.

An optional configuration uses the PZ12-LP “down-looking” level sensor and a QZ02L-DP velocity
sensor.

To troubleshoot the AVFM-II, verify correct operation of LEVEL and VELOCITY measurements
separately.

Note: Selecting “Defaults” in the SPECIAL FUNCTION menu will return the instrument to

“as-shipped” factory settings.

LEVEL (QZ02L SENSOR)

SYMPTOMS FAULTS SOLUTIONS

EC bar graph at zero - very turbulent flow - Increase LOE time (SPECIAL

FUNCTION)

- very aerated flow - relocate sensor or use PZ12-LP

- sensor not level - level sensor with “Bullseye”
level

- sediment/dirt/grease build-up on

- clean sensor

sensor

- Level display reads 1.0

- Level less than 1.0 inches

inches

VELOCITY (QZ02L SENSOR)

SYMPTOMS FAULTS SOLUTIONS

- No velocity reading - Grease/sediment on sensor

- Improper hook-up

- Clean sensor with detergent

- Check sensor connections

Page 23

AVFM-II Area-Velocity Flow Meter

REMOVE

REMOVE

FUSE REPLACEMENT

1. Turn OFF power

2. Loosen 2 Phillips corner screws and remove power module from the chassis.

3. Locate fuse on Power Board

4. Replace fuse with 2 Amp/250V, 5 x 20mm fuse

5. Reinstall power module in the chassis.

Manual Series A.10

SENSOR CLEANING INSTRUCTIONS BEFORE HANDLING

AVFM-II sensors that have been immersed in sewage should be cleaned before handling.

1. Rinse sensor and cable to remove debris.

2. Immerse sensor and cable in a solution of 1 part household bleach (Javex, Clorox etc.) to 20 parts
water for 5 minutes. Do not immerse open end of sensor cable or cable plug. Ensure that the protective
cap is properly fitted to the cable plug before immersing in water or cleaning solution

3. Remove grease from sensor with clean water and mild soap. Do not use abrasive cleaners, solvents or
high pressure washers.

SENSOR CLEANING WHILE AVFM-II IS IN OPERATION

Use a soft brush or broom to wipe the sensor face. DO NOT USE an abrasive tool or gouge the surfaces
of the sensor.

Remove the sensor from its mounting bracket to remove severe build-up of debris or “stringers”
attached to the sensor, cable or mounting bracket.

Page 24

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

APPLICATIONS HOTLINE

For applications assistance, advice or information on any Greyline Instrument contact your Sales
Representative, write to Greyline or phone the Applications Hotline below:

United States: Tel: [phone] Fax: [phone]
Canada: Tel: [phone] Fax: [phone]
Toll Free: 888-473-9546
Email: [e-mail]
Web Site: http://www.greyline.com

Greyline Instruments Inc.

Canada USA:
16456 Sixsmith Drive 105 Water Street
Long Sault, Ont. K0C 1P0 Massena, NY 13662

Page 25

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

PRODUCT RETURN PROCEDURE

Instruments may be returned to Greyline for service or warranty repair.

1 Obtain an RMA Number from Greyline -

Before shipping a product to the factory please contact Greyline by telephone, fax or email to obtain
an RMA number (Returned Merchandise Authorization). This ensures fast service and correct
billing or credit.

When you contact Greyline please have the following information available:

1. Model number / Software Version

2. Serial number

3. Date of Purchase

4. Reason for return (description of fault or modification required)

5. Your name, company name, address and phone number

2 Clean the Sensor/Product -

Important: unclean products will not be serviced and will be returned to the sender at their expense.

1. Rinse sensor and cable to remove debris.

2. If the sensor has been exposed to sewage, immerse both sensor and cable in a solution of 1 part
household bleach (Javex, Clorox etc.) to 20 parts water for 5 minutes. Important: do not immerse open
end of sensor cable.

3. Dry with paper towels and pack sensor and cable in a sealed plastic bag.

4. Wipe the outside of the enclosure to remove dirt or deposits.

5. Return to Greyline for service.

3 Ship to Greyline -

After obtaining an RMA number please ship the product to the appropriate address below:

Canadian and International USA
Customers: Customers:

Greyline Instruments Inc. Greyline Instruments Inc.
16456 Sixsmith Drive 105 Water Street
Long Sault, Ont. K0C 1P0 Massena, NY 13662

RMA# RMA#

Page 26

AVFM-II Area-Velocity Flow Meter

LIMITED WARRANTY

______________________

Greyline Instruments warrants, to the original purchaser, its
products to be free from defects in material and workmanship for
a period of one year from date of invoice. Greyline will replace
or repair, free of charge, any Greyline product if it has been
proven to be defective within the warranty period. This warranty
does not cover any expenses incurred in the removal and
re-installation of the product.

Manual Series A.10

If a product manufactured by Greyline should prove defective
within the first year, return it freight prepaid to Greyline
Instruments along with a copy of your invoice.

This warranty does not cover damages due to improper
installation or handling, acts of nature, or unauthorized service.
Modifications to or tampering with any part shall void this
warranty. This warranty does not cover any equipment used in
connection with the product or consequential damages due to a
defect in the product.

All implied warranties are limited to the duration of this
warranty. This is the complete warranty by Greyline and no
other warranty is valid against Greyline. Some states do not
allow limitations on how long an implied warranty lasts or
limitation of incidental or consequential damages, so the above
limitations or exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state.

Greyline Instruments Inc.

Page 27

AVFM-II Area-Velocity Flow Meter

CONDUIT (BY CUSTOMER)

If Required For Mechanical Protection

SENSOR CABLE

25 ft (7.6m) SHIELDED

TRI-COAXIAL

TRI-COAXIAL

SHIELDED CABLE

500 ft (152m)

MAX. LENGTH

OPTION VJB SENSOR CABLE JUNCTION BOX

NEMA4 (IP55) STEEL

EXTENDED SENSOR

CABLE TO ELECTRONICS

ENCLOSURE

GREEN WIRES
MUST BE CONNECTED
TO GND TERMINAL

GND

SHIELD

CORE

SENSOR

GOOD

BLACK
INSULATION
HAS BEEN
REMOVED

BAD

BLACK
INSULATION
HAS NOT
BEEN
REMOVED

Manual Series A.10

APPENDIX A - OPTIONS

EXTRA SENSOR CABLE
(OPTION VXC)

Each Greyline AVFM-II flow meter includes 25 ft. (7.6 m), 50 ft. (15 m) or 100 ft. (30 m) tri-coaxial
sensor cable. This cable is shielded from electrical interference and is watertight with a polyurethane
jacket. Additional cable and Cable Junction Box (Option VJB) may be ordered with the Flow Meter, or
the cable may be spliced and extended up to 500 ft (152 m) total length as required during installation.
No adjustment is required when the sensor cable is extended or shortened. Use only Greyline tri-coaxial
VXC shielded cable, or run three RG174U coaxial cables in a metal conduit.

Extended sensor cable can be installed in conduit for mechanical protection. Recommended installation
with a metal junction box is illustrated below:

COAXIAL CABLE PREPARATION

DXC Doppler sensor cable can be cut and spliced up to a maximum length of 500 ft (152 m). Cable ends
must be prepared as illustrated below.

Page 28

AVFM-II Area-Velocity Flow Meter

DIMENSIONS

OPTION VJB - JUNCTION BOX

Manual Series A.10

SENSOR CABLE JUNCTION BOX
(OPTION VJB)

Optional Watertight steel NEMA4 (IP55) Junction Boxes with terminal strips are available from
Greyline Instruments.

Page 29

SS PIPE MOUNTING BAND - OPTION VSJ

CODE BAND SIZE

VSJ6 6”/150 mm ID pipes
VSJ8 8”/200 mm ID pipes
VSJ10 10”/250 mm ID pipes
VSJ12 12”/300 mm ID pipes

VSJ14 14”/350 mm ID pipes
VSJ15 15”/375 mm ID pipes
VSJ16 16”/400 mm ID pipes
VSJ18 18”/450 mm ID pipes
VSJ20 20”/500 mm ID pipes
VSJ24 24”/600 mm ID pipes
VSJ30 30”/750 mm ID pipes

VSJ32-40 32-40” / 800-1000 mm ID pipes
VSJ42-54 42-54” / 1100-1375 mm ID pipes

VSJ56-72 56-72” / 1400-1800 mm ID pipes

DETAIL

BAND ADJUSTMENT

JACK

Use optional VSJ stainless steel Pipe Mounting Bands
for easy Sensor installation in round pipes.

Each Pipe Band includes:

!

Band Adjustment Jack allowing ±0.5” (13 mm) adjustment from
the nominal band size

!

Stainless steel bracket for Sensor mounting

!

Pre-drilled for tie wraps (included) to secure Sensor cable

VSJ PIPE MOUNTING BAND

BAND
ADJUSTMENT JACK

SENSOR MOUNTING

BRACKET

Mounting Instructions:

Install the stainless steel pipe band with the
sensor mounting bracket at the invert (bottom)
of the pipe. Ensure that the sensor bracket is
parallel to the water surface (check with a
level). Mount so the tapered end of the sensor
will point upstream and the sensor cable will
point downstream. Turn the ¼” hex nut
clockwise to expand the bracket and secure to
the pipe wall by friction fit.

Insert the sensor into the mounting bracket and
clip or tie wrap the sensor cable securely to the
stainless steel pipe band.

FASTEN SENSOR

CABLE TO PIPE OR

CHANNEL WITH

METAL CLIPS OR

TIE WRAPS

SENSOR

END VIEW

VSJ HALF-PIPE

MOUNTING BAND

ADJUSTMENT

JACK

SENSOR MOUNTING

BRACKET

END
BRACKET

FLOW

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

Page 30

AVFM-II Area-Velocity Flow Meter

NOTE:
BARRIER-EQUIPPED UNITS
ARE FACTORY-WIRED WITH
GROUND THROUGH THE
INSTRUMENT CHASSIS.
POWER INPUT GROUND
MUST BE CONNECTED TO A
GOOD GROUND (<1 Ohm) WITH
A 12 AWG CONDUCTOR

REPLACEMENT FUSE ASSEMBLY
ORDER PART NO. ISB-011239 (160mA)

NON-HAZARDOUS LOCATION

HAZARDOUS LOCATION

CLASS I, GROUPS C,D
CLASS II, GROUPS E,F,G
CLASS III

3 3

4 4

1 1

2 2

INTRINSIC SAFETY BARRIER

INTRINSIC SAFETY BARRIER

INTRINSIC SAFETY BARRIER

SENSOR

TDCR.3

TDCR.1

TDCR.2

L

N

G

AC

100-130VAC (50/60 Hz)

OPTIONAL:
200-260VAC (50/60 Hz)

TDCR.3

TDCR.1

TDCR.2

*

4

3

1

2

WHITE STRIPE

GREEN STRIPE

NO STRIPE

WHT

STRIPE

GRN

STRIPE

(VELOCITY)

NO STRIPE

(LEVEL)

GROUND STUD

N.O

C

N.C

N.O

C

N.C

RELAY 1

RELAY 2

RXPUGND

TX

RS 232

4 - 20
FLOW

4 - 20

VLCTY

4 - 20

LEVEL

Manual Series A.10

SENSOR INTRINSIC SAFETY - OPTION ISB

SENSOR MODELS QZ02L/QZ02L-DP/PZ12-LP (with built-in temperature compensation)

When connected through an Intrinsic Safety Barrier, the Greyline QZ02L, QZ02L-DP and PZ12-LP
sensors are CSA certified for installation in a hazardous location rated:

Class I, Groups C,D
Class II, Groups E, F and G
Class III

Intrinsic Safety Barriers may be ordered with the Greyline instrument and are supplied mounted in the
Greyline instrument enclosure. Replacement barrier fuses (Part No. ISB-011239) may be purchased
separately. Barriers must be installed in the sensor cable between the safe and hazardous locations, and
must be mounted in either the safe or Div. 2 area. Barriers may be plate, busbar or rail mounted.

Intrinsic Safety Barrier Specifications: Certified, rated 9.3V max, 25 ohms min. (Recommended: Stahl
Model 9001/02-093-390-10).

Page 31

AVFM-II Area-Velocity Flow Meter

FACTORY CONNECTED
TO AC POWER SUPPLY

Manual Series A.10

ENCLOSURE HEATER AND THERMOSTAT - Option TH

Instruments can be factory-equipped with an Enclosure Heater and Thermostat. The Thermostat is
factory set to turn ON at 40°F (4.5°C) and OFF at 60°F (15.5°C). Power consumption is 15 Watts.

Page 32

AVFM-II Area-Velocity Flow Meter

GND

12 AWG

MAX

OPTIONAL 9-36VDC

POWER INPUT

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)

WITH 12 AWG CONDUCTOR

9-36VDC

1 AMP FUSE

Manual Series A.10

POWER INPUT OPTION
9-36VDC

AVFM-II Level & Flow Monitors may be ordered factory-configured for 9-36VDC power input.

FUNCTION TEST:

Connect the sensor to the TDCR terminals as shown below, then apply power.

A. Place QZ02L sensor (flat to the bottom) in a bucket of water about 6” deep and select Level

mode (from UNITS/MODE menu) to see a level reading.

B. Select Velocity mode and stir the water to see a velocity reading.

CONNECTIONS:

POWER INPUT: Connect 9-36VDC/0.5 Amps to the + and - terminals. The Power Input GND must be
connected to the nearest Ground pole. A 1 amp fuse in line is recommended. Maximum Power
Consumption is 3.5 W continuous.

Page 33

DATA LOGGER MENU (Optional)

DATA LOGGING

Log Site ID 1

Session No 1

RUN STOP Setup

PASSWORD: 00 UNITS / MODE

StartJan 01/2000

Start 03:02:16

Interval: 24 Hrs

Interval: 12 Hrs

Interval: 1 Hrs

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

Formtd Trend LVT

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

Page 34

AVFM-II Area-Velocity Flow Meter

DATA LOGGING

Log Site ID 1

RUN STOP Setup

PASSWORD: 00 UNITS / MODE

Formtd Trend LVT

Manual Series A.10

DATA LOGGING (Optional)
Setup

From RUN STOP SETUP press Æ to SETUP and then È to Log Site ID 0. Press Æ to position the
cursor under the numeral and È or Ç to change the numerals. The “Site ID” number is retained with
data logging sessions to identify logs stored from different locations.

Regardless of the logging mode selected a 24 hour flow report will be created and displayed under the

24 HR LOG menu

Formatted Data

Press È from Log Site ID and press È from Formtd.

“Formtd” data stores a summary of flow readings over a user-selectable time period. The summary
includes:

DATE and TIME
Interval TOTAL
Interval AVERAGE
Interval MAX FLOW
Interval MAX FLOW TIME
Interval MIN FLOW
Interval MIN FLOW TIME

From Formtd press È to Start MMM DD/YYYY (eg: Jan 01/2000). Press Æ to position the cursor
and then È or Ç to set the Month, Day and Year that logging will Start. Press Æ to return to Start.

Press È to Start (time) and Æ to position the cursor under the time column HH/MM/SS (24 hour
clock in Hours/minutes/seconds, eg: 23:02:16) and then È or Ç to set the logging start Time. Press
Æ to return to Start .

Press È to Interval and Æ to the Hrs column. Press È or Ç to select the flow logging interval.

Choose from:

24 Hrs, or 12 Hrs, or 8 Hrs, or 4 Hrs, or 1 Hrs

Page 35

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

Press Æ to return to Interval. Press È and the AVFM-II will report xxxxx Hrs Left indicating
the amount of logging time available with your current set-up. You can also press Ç to return to
previous menu items and make changes.

Press È to WrapAround Yes?. Press Æ to Yes? and È to enable the logging wrap function. In
WrapAround mode the oldest data will be overwritten by the newest. If WrapAround is not enabled the
logger will stop when its memory becomes full.

Press È to Reset Log? Yes. Press Æ to Yes and then È to reset the Log and erase all previous
sessions and stored values. Or press È from Reset Log? to retain existing data in the Log. The
AVFM-II will display “xxxxx Hrs/Days Left.

From the xxxxx Hrs Left display press È to Store? Yes. Press Æ to Yes and then È to save
your Data Logging setup, or press È from Store? to cancel changes made above and exit without
storing changes.

From the Data Logging Store? Yes prompt the menu will return to RUN STOP SETUP. Press Æ to
position the cursor under RUN and press È to activate the Data Logger to start at your selected start
Date and Time. The AVFM-II will display SESSION NO. x. Press È to return to DATA LOGGING.

Viewing FORMATTED Data Logs on the AVFM-II Display

24 Hour Formatted logs can be viewed directly on the AVFM-II display regardless of the logging mode
selected. From RUN press Æ to 24 HR LOG.

The 24 Hour Log Report is designed to be read one line at time using the Æ key. Using the È or Ç
keys will return the display to the Date column.

TODAYS DATE DAILY TOTAL DAILY AVERAGE MAX FLOW MAX FLOW TIME MIN FLOW MIN FLOW TIME

PREVIOUS DATE “ “ “ “ “ “

PREVIOUS DATE “ “ “ “ “ “

PREVIOUS DATE “ “ “ “ “ “

PREVIOUS DATE “ “ “ “ “ “

PREVIOUS DATE “ “ “ “ “ “

The current day plus the past 255 days of data can be displayed. (Greyline Logger Windows software
will display up to 1300 days of data.)

Trend Data Logging - Setup

From RUN STOP SETUP press Æ to SETUP and then È to Log Site ID 0. Press Æ to position the
cursor under the numeral and È or Ç to change the numerals. The “Site ID” number is retained with
data logging sessions to identify logs stored from different locations.

From Log Site ID press È to Formtd Trend LVT and press Æ to position the cursor under

Trend. Then press È to select Time based logging.

Page 36

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

LVT Data Logging - Setup

Press È from Log Site ID and press È from LVT.

Level-Velocity-Temperature "LVT" mode stores separate level, velocity and temperature readings over
a user - selectable time period. LVT data log files can be converted to flow using Greyline Logger
software.

Note: In LVT mode three data points are stored for each time interval.

‘Time’ based Trend and LVT Logging

Time based logging allows you to choose Start and Stop times and a logging interval.

From Time press È to Start MMM DD/YYYY (eg: Jan 01/2000). Press Æ to position the cursor
and then È or Ç to set the Month, Day and Year that logging will Start. Press Æ to return to Start.

Press È to Start (time) and Æ to position the cursor under the time column HH/MM/SS (24 hour
clock in Hours/minutes/seconds, eg: 23:02:16) and then È or Ç to set the logging start Time. Press
Æ to return to Start .

Press È to Interval and Æ to the Sec/Min column. Press È or Ç to set the logging time interval.
Choose:

30 Sec

10 Sec

5 Sec

2 Sec

1 Sec

30 Min

10 Min

5 Min
2 Min
1 Min

Press Æ to return to to Interval and È to Reset Log? To erase all existing data in the log press Æ
to Yes and È. To keep existing data in the Log press È from Reset Log? If you have made changes
to the Start Date, Time or Interval, the data logger will automatically start a new “session”. The
AVFM-II will display “xxxxx Hrs/Days Left”.

From the xxxxx Hrs Left display press È to Store? Yes. Press Æ to Yes and then È to save your
Data Logging setup, or press È from Store? to cancel changes made above and exit without storing
changes.

Page 37

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

From the Data Logging Store? Yes prompt the menu will return to RUN STOP SETUP. Press Æ to
position the cursor under RUN and press È to activate the Data Logger to start at your selected start
Date and Time. The AVFM-II will display SESSION NO. x. Press È to return to DATA LOGGING.

‘Event’ based Trend and LVT Logging

Event based logging stores data points only when a High or Low set point has been reached.

With cursor under Event press È to HiAlm LoAlm . HiAlm will log points above a selectable level,
flow or velocity point rate, while LoAlm will log points below a selectable level, flow or velocity point.
Position the cursor under HiAlm or LoAlm and press È to the At: prompt. Press Æ to the numerals
column and press È or Ç to set the alarm logging set point. Press Æ to return to At:

Press È to In ter val and Æ to the Sec/Min col umn. Press È or Ç to set the log ging time in ter val.

Choose:

30 Sec

10 Sec

5 Sec
2 Sec

1 Sec

30 Min

10 Min

5 Min

2 Min

1 Min

Press Æ to return to Interval and press È to WrapAround?. Press Æ to Yes to overwrite the
oldest data point with each new data point stored when the logger storage capacity has been reached.

To retain all data points collected and stop logging when the logger storage capacity has been reached
press È from WrapAround?.

From Reset Log? press Æ to erase all existing data in the log (including the on-screen 24 hr log)
press Æ to Yes and È. To keep ex ist ing data in the Log press È from Re set Log? If you have made
changes to the Start Date, Time or In ter val, the data log ger will au to mat i cally start a new “ses sion”. The
AVFM-II will dis play “xxxxx Hrs/Days Left”.

From the xxxxx Hrs Left dis play press È to Store? Yes. Press Æ to Yes and then È to save
your Data Logging setup, or press È from Store? to can cel changes made above and exit with out
stor ing changes.

Page 38

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

From the Data Logging Store? Yes prompt the menu will return to RUN STOP SETUP. Press Æ to
position the cursor under RUN and press È to ac ti vate the Data Log ger to start. The AVFM-II will
dis play SESSION NO. x. Press È to re turn to DATA LOGGING.

Note: Greyline Logger software cannot accurately calculate totals from 'event' based log files. Use
'trend' logging format if totals must be calculated.

Logging "Sessions"

Each time you select STOP in the DATA LOGGING menu, the Data Log ger stores the cur rent data in
mem ory as a "SESSION NO" au to mat i cally num bered from "1" to "10". If you re sume log ging by
se lect ing RUN, the Data Log ger will re port that a new log ging ses sion is started and ti tled "SESSION

NO xx". When you down load the log ger files to your PC us ing Greyline Log ger soft ware, each Ses sion

will open as a sep a rate graph/ta ble ti tled "Greyline Data Log xx".

Important:
If you STORE instrument calibration changes under the UNITS/MODE or CALIBRATION menus,

STOP the data logger and select RUN again to start a new logging Session with your new calibration

values.

Page 39

AVFM-II Area-Velocity Flow Meter

Greyline
Instrument

RS232

20' (6 m) cable

included

Detail

INCLUDED

RX

RS 232

PU

GND

TX

(GREEN)

(WHT)

(BLK)

(RED)

Wired as DCE
(Data Communication Equipment)

PIN 2 - RX
PIN 3 - TX
PIN 5 - GND

SHIELD - CASE

(PU = PULL-UP)

PIN 6 - DSR (PU)
PIN 8 - CTS (PU)

5

4

3
2
1

9
8

7

6

Detail

DB9F

DB25F

Modem

Modem

Computer

D

B9M

DB25M

Public Telephone Lines

NULL MODEM

Option

NM-DB9M/DB25M

Manual Series A.10

RS232C SERIAL OUTPUT (with optional Data Logger)

Format: 8 Bits, 1 Stop Bit, No Parity. (Baud rate may be changed under the SPECIAL FUNCTIONS
menu. Factory default is 19200 baud).

Output Connector is DB9-Female. Use the cable supplied for connection to a PC Computer. Use the
cable and optional Null Modem NM-DB9M/DB25M for connection to a modem.

Page 40

AVFM-II Area-Velocity Flow Meter

Note:

Exposure to direct sunlight can cause
overheating and moisture condensation
which will reduce the operating life of
electronics.

Protect Instruments from direct sunlight
with this iridite finished aluminum sun
screen (Greyline Option SCR).

Seal conduit entries with caulking
compound to further reduce moisture
condensation.

11" / 280 mm

5"
127 mm

11"

280 mm

Manual Series A.10

ENCLOSURE SUNSCREEN - OPTION SCR

Do not mount instrument electronics in direct sunlight. Overheating will reduce the life of electronic
components and condensate may form during the heat/cool cycles and cause electrical shorts.

Page 41

AVFM-II Area-Velocity Flow Meter

CONVERSION

GUIDE

FROM TO MULTIPLY BY

US GALLONS CUBIC FEET 0.1337
US GALLONS IMPERIAL GALS 0.8327
US GALLONS LITRES 3.785
US GALLONS CUBIC METERS 0.003785
LITRES/SEC GPM 15.85
LITRES CUBIC METERS 0.001
BARRELS US GALLONS 42
BARRELS IMPERIAL GALS 34.9726
BARRELS LITRES 158.9886
INCHES MM 25.4
DEGREES F DEGREES C

(°F-32) x 0.556
POUNDS KILOGRAMS 0.453
PSI BAR 0.0676
FOOT² METER² 0.0929

Manual Series A.10

VOLUME CALCULATION FOR ROUND TANKS: 3.142 x R² x H
R = TANK RADIUS (½ TANK DIAMETER)
H = TANK HEIGHT

Page 42

AVFM-II Area-Velocity Flow Meter

SIDE VIEW

10.94" / 278mm

10.0" / 254mm

7.40" / 188mm

6.46" / 164mm

5.12" / 130mm

CONDUIT ENTRY

LOCATION

AVFM-II

Area-Velocity
Flow Monitor

1.62"

41.2 mm

0.56"

14.2 mm

3.00"

76.2 mm

MB-QZ - MOUNTING BRACKET QZ02L VELOCITY/LEVEL SENSOR

25 ft (7.6 m)
Sensor Cable

5.00”

127 mm

1.50

38.1 mm

"

0.63"
16 mm

SIDE VIEW

0.50"

12.7 mm

SPECIFICATIONS

Electronics Enclosure: NEMA4X (IP 66), watertight

and dust tight, fiberglass with
clear, shatterproof
hinged Lexan cover

Accuracy: Level: ± 0.25% of Range

Velocity: ± 2% of Reading
Repeatability: 0.1% F.S.,
Linearity: 0.1%F.S.

Display: Flow/Level Values: ¾” / 19

mm high, 4 digit LCD
Menu/Status/Totalizer:
16 digit LCD alphanumeric

Programming: 3-button keypad with Menu

selection. Calibration
parameters are permanent
when Stored (even through
power interruptions)

Power Input: 100-130VAC, 50/60 Hz, (3.5 W max.)

Optional: 200-260VAC, 50/60 Hz, (3.5 W max.)
Optional: 9-36VDC (3.5 W max.)

Output: 3 Isolated 4-20mA, 1000 ohm load maximum

Control Relay: Qty 2, rated 5 ampere SPDT

Temperature Compensation: Automatic, temperature probe built in to level Sensor

Electrical Surge Protection: Sensor, 4-20mA, AC power input

Operating Temperature: -5 to 140°F (-20 to 60°C). Optional Enclosure Heater recommended for

(electronics) condensation protection below 32°F (-1°C)

Manual Series A.10

Velocity/Level Sensor QZ02L

Minimum Velocity: 0.1 ft/sec (0.03 m/sec)

Maximum Velocity: 20 ft/sec (12.2 m/sec)

Minimum Head: 1 in. (25.4 mm)

Maximum Head: 15 ft. (4.57 m)

Operating Temperature: 5 to 150°F (-15 TO 65°C)

Exposed Materials: PVC, epoxy resin, polyurethane, ultem

Sensor Cable: 25 ft. (7.6 m) submersible polyurethane jacket, shielded, 3 coaxial

Hazardous Rating: CSA rated Intrinsically Safe Class I, Groups C,D, Class II, Groups E,F,G

with optional Intrinsic Safety Barrier

Page 43

Optional (Velocity only) Sensor QZ02L-DP

1.62"

41.2 mm

0.56"

14.2 mm

3.00"

76.2 mm

MB-QZ - MOUNTING BRACKET QZ02L-DP VELOCITY/LEVEL SENSOR

25 ft (7.6 m)
Sensor Cable

5.00”

127 mm

1.50

38.1 mm

"

0.63"

16 mm

SIDE VIEW

0.50"

12.7 mm

4.00"

101.6 mm

3.00"

76.2 mm

0.62"

15.75 mm

FACE
VIEW

SIDE
VIEW

0.25 DIA
(6.35 mm)

MB12 - MOUNTING BRACKET PZ12-LP ULTRASONIC SENSOR

0.218 DIA
(5.5 mm)

3.00"

76.2 mm

0.68"

17.3 mm

3.12"

79.2 mm

25 ft (7.6 m)
Coaxial Cable

Minimum Velocity: 0.1 ft/sec (0.03 m/sec)

Maximum Velocity: 20 ft/sec (12.2 m/sec)

Operating Temperature: 5 to 150°F (-15 to 65°C)

Exposed Materials: PVC, epoxy resin, polyurethane, ultem

Sensor Cable: 25 ft (7.6 m) submersible polyurethane jacket, shielded, 3-coaxial

Hazardous Rating: CSA rated Intrinsically Safe Class I, Groups C,D, Class II, Groups E,F,G,

with optional Intrinsic Safety Barrier

AVFM-II Area-Velocity Flow Meter

Manual Series A.10

Optional Sensor PZ12-LP

Maximum Range: 12 ft (3.66 m)

Minimum Range: 8" (203.2 mm)

Beam Angle: 8°

Operating Temperature: -40 to 150°F (-40 to 65°C)

Exposed Materials: Sensor - PVC, Mounting Bracket - 316 Stainless

Hazardous Rating: CSA rated Intrinsically Safe Class I, Groups C,D,Class

II, Groups E,F,G with optional Intrinsic Safety Barrier

Page 44

PASSWORD: 00

OPTIONAL FEATURES

RUN

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 -

AVFM-II - CALIBRATION RECORD

Velocity:0.00ft/s

Level: 0.000 ft

CALIBRATION

DATA LOGGING

Log Site ID 1

Session No 1

Formtd Trend LVT

RUN STOP Setup

StartJan 01/2000

Start 03:02:16

Interval: 24 Hrs

Interval: 12 Hrs

Interval: 1 Hrs

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

Store? Yes

CHANNEL SETUP

Round

Width

Width

UNITS/MODE

ft in m cm

Range

Store? Yes

ft3 USG USMG

IG IMG m3 L

s min hr d

Chan ID

Square

Level Flow Velocity

Trapezd

Slope

Egg

Height

MinRg 1.333 ft

MaxRg 32.00 ft

Damping 20 %

Store? Yes

MaxLvl 3.000 ft

MaxV 10.00 ft/s

MaxF 10.000 ft3/s

MinLvl 0.125 ft

Relays:1 2

Tot:

SC

v

EC

SPECIAL FUNCTION

AVFMII V 2.78

RELAY PARAMETERS

Pulse

R1on 0.00 ft3

Flow

R1 on 0.00 ft3/s

R1 OFF 0.00 ft3/s

R1 LOE Off

On

Store? Yes

Hold

Tag 01

Date May 31/1999

Time 23:39:51

View Codes? Yes

LOE Time 30 s

Reset Tot? Yes

Temp 20.3 Cº

Min Temp 20.0 Cº

Max Temp 23.0 Cº

DISPLAY C Fºº

Cal Const

Velocity

Level

Flow

Velocity

R1 on 0.00 ft

R1 OFF 0.00 ft

Pulse

R2on 0.00 ft3

R2 on 0.00 ft3/s

R2 OFF 0.00 ft3/s

R2 LOE Off

On

Hold

Level

R2 on 0.00 ft

R2 OFF 0.00 ft

Defaults? Yes

Simul 0.00%

New Password: 00

Com 96 192

Store? Yes

R1 Function Off

R2 Function Off

ISB?: No Yes

WrapAround? Yes

LvlOFFSET

Serial # _______________________

Date: _________________________

Page 45