How it Works
Greyline Instruments
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AVFM-II
User Manual
45 pgs1.11 Mb0

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
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
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