Hycontrol MINIFLEX LR Installation And Operation Manual

MINIFLEX LR PROGRAMMABLE LEVEL CONTROLLER

INSTALLATION AND OPERATION MANUAL

Rev 0

Hycontrol Limited, Larchwood House, Orchard Street,

Redditch, Worcestershire, B98 7DP, UK.

Tel: [phone] Fax: [phone]

Email:

[e-mail] Web: www.hycontrol.com

MINIFLEX LR USER MANUAL - INDEX

Page Drawings

Introduction

1

SECTION 1 Installation

Transceiver Mounting 2 Fig. 1
Transceiver Wiring 3 - 4 Fig. 2 & 3
Transducer Mounting 5 Fig. 4
Transducer Alternative Mounting 6 Fig. 5
Transducer Mounting Faults 7 Fig. 6
Transducer Stand Pipe 7
Transducer Cable Extensions 8 Fig. 7 & 8
Temperature Sensor 9 Fig. 9

SECTION 2 Easy start for Miniflex LR

Quick Start Guide 10
Principle of Program ming 10
Keypad Definitions 10 - 11
To Enter Programme 11
To Enter the Password 11
To Change an Option 12
To Reset 13
Simulation Mode 13

SECTION 3 Programming the instrument

Parameter List 14 - 34

SECTION 4 Miniflex LR Default programs

1. Distance Measurement Mode 35

2. Level Measurement Mode 36

3. Contents, Volume Conversion 37

4. Pump Control 38

5. Open Channel Flow 39 - 40

6. Differential 41 - 42

SECTION 5 Commissioning fault finding
APPENDIX 1 LINEARISATION OF SPECIAL

43 - 47
48 - 52

VESSELS OR FLUMES
APPENDIX 2 SPECIFICATION
APPENDIX 3 INSTALLATION INSTRUCTIONS

53
54 - 55

FOR ATEX TRANSDUCER IN
HAZARDOUS AREA

APPENDIX 4 PARAMETER SETTINGS
APPENDIX 5 PARSHALL FLUMES
APPENDIX 6 WIRING DIAGRAM FOR

56 - 62
63
64

SYNCHRONISATION OF
INSTRUMENTS

APPENDIX 7 MINIFLEX LR PROGRAMMING

65 - 74

CHARTS

SECTION 1

MINIFLEX LR PROGRAMMABLE LEVEL CONTROLLER

USER MANUAL

INTRODUCTION

Miniflex LR is a programmable multi-purpose level measurement and flow control
instrument. It consists of two elements, a wall mounted transceiver, which has a display and
an integral keypad for programming, and a transducer, which must be mounted directly above
the surface to be monitored.

Ultrasonic pulses are transmitted by the transducer to the surface of the material to be
monitored and are reflected back to the transducer. The time period between transmission and
reception of the sound pulses is directly proportional to the distance between the transducer
and the material.

Since speed of sound through air is affected by changes in temperature, a separate or
integrated temperature sensor may be fitted to improve accuracy.

Miniflex LR is capable of the following functions:-

a) Distance Measurement (distance from a datum)
b) Level Measurement (height above datum)
c) Volume Measurement
d) Pump Control
e) Open Channel Flow Measurement (O.C.M.)
f) Differential Level Measurement

WARNING

DO NOT OPEN THE TRANSCEIVER

TERMINAL COVER WHEN THE POWER IS ON TO

THE SUPPLY OR RELAY TERMINALS.

IMPORTANT INSTALLATION REQUIREMENTS

1: A SWITCH OR CIRCUIT BREAKER SHALL BE INCLUDED IN

THE INSTALLATION

2: IT SHALL BE IN CLOSE PROXIMITY TO THE EQUIPMENT AND

WITHIN EASY REACH OF THE OPERATOR

3: IT SHALL BE MARKED AS THE DISCONNECTING DEVICE FOR

THE EQUIPMENT

Ref: MINIFLEX LR MANUAL Rev. 0 1

SECTION 1

INSTALLATION

Transceiver For ATEX hazardous areas refer to Appendix 3.

Enclosure mounting

Secure one of the three fixing screws provided with the instrument 30mm below the centre of
where the top of the instrument is to be located. This fixing screw will need to be left 4mm
proud of the surface allowing the instrument to be hung from this point. The instrument is
then secured in place by 2 more screws using the two mounting slots exposed when the
terminal cover is removed. DO NOT use excessive force when tightening the fixings and
avoid any distortion of the enclosure.

Ensure that the mounting surface is not subject to vibration and is not in close proximity to
high voltage cables, contactors or drive controls. The unit should not be mounted in a
confined space where temperatures may exceed the normal working temperature. If the unit
is mounted outside, it must be protected from direct sunlight or severe weather conditions.

Select appropriate knockouts in the base of the enclosure and fit appropriate cable glands to
maintain the IP65 rating.

106.5

31.00

MINIFLEX LR

LEVEL CONTROLLER

INCREASE

MOUNTING POINT 1

RELAY 1

FOUND ON REAR

RELAY 3

ECHO

HYCONTROL LTD, ENGLAND

TEL :[phone] Websi t e: www.hycontrol.com

BACK

DIGIT

M

ENT

(MODIFY)

OPTION

/ DIGIT

185.0

137.0

MOUNTING POINT 2 & 3

(REMOVE TERMINAL COVER)

10

∅

198.0

213.0

5.4

KNOCKOUTS FOR 1 HOLE 16mm AND 5 HOLES 20mm

∅∅

NOTE: - All dimensions are shown in mm

Figure 1: Enclosure dimensional & mounting drawing

Ref: MINIFLEX LR MANUAL Rev. 0 2

SECTION 1

Electrical and Transducer Connections

The Miniflex LR has two-part screw terminals; the top part can be removed for ease of connection. It can be
powered from either an AC or DC supply.

Power Supply Remove the terminal cover to expose the terminals shown below.

F4

T250mA

TB1

1 2 3 4 5 6 7 8 9 101112131415161718192021222324

TB2 TB3 TB4 TB5 TB6

95V

25

F3

T160mA

110V

230V

Figure 2: Terminals as seen in Miniflex LR.

The wiring instructions are on the inside of the terminal cover as shown below.

1

2 3 4 5 6 7 8 9 101112131415161718192021222324

+

DC POWER

21.6-30VDC

9W

SHIELD

-

RS485

+

TRANSDUCER

-

SHIELD

HOT

SYNC

SHIELD

+

-

ISOLATED
ANALOG
OUTPUT

RELAY 1

RELAY 3RELAY 2

E

L2

AC POWER

95/110/230V AC

+10%/-10%

50/60 HZ 12VA

25

LN

L1

Figure 3: Wiring diagram label inside MIniflex LR terminal cover

AC Supply The instrument will accept either 95V, 110V or 230VAC ±10%, 50Hz or 60Hz, 12VA.
A time lag fuse T160mA is fitted.

Select the voltage required using the jumper link situated just above terminal TB6.

Pass mains cable through cable gland and - Connect:- Earth to terminal 23
Neutral to terminal 24
Live to terminal 25

DC Supply The instrument will accept 21.6 - 30VDC, 5W. A time lag fuse T250mA is fitted.

- Connect :- Positive +ve to terminal 1
Negative -ve to terminal 2

Relays

3 SPDT Relays - rated at 8A/250VAC 8A/30V DC resistive, are connected at terminals 14 to 22, for activating

external alarms, contactors, pumps etc..

Transducer
Transducer RYV15 & RWV15 - is connected:- Black to terminal 6

Blue to terminal 7
Shield to terminal 9

Ref: MINIFLEX LR MANUAL Rev. 0 3

Temperature compensated transducer RYT15 & RWT15 - is connected: ­ Shield to terminal 6
Blue to terminal 7
Black to terminal 8

Analogue Output
Analogue - is connected : - Shield to terminal 11

Positive +ve to terminal 12
Negative -ve to terminal 13

RS485 Output
RS485 - is connected : - Shield to terminal 3

Negative –ve to terminal 4
Positive +ve to terminal 5

Note: - See Page 8 for transducer extension cables.

SECTION 1

Ref: MINIFLEX LR MANUAL Rev. 0 4

SECTION 1

Transducer Mounting

The transducer can be supplied as 'standard' or mounted in a flange. For applications
requiring chemical compatibility the transducer is available fully enclosed in PVDF in a
standard mounting or with flange. Figure 4 shows the dimensions:

10m cable 6.0 dia

50 dia

M20 x 1.5

M32 x 1.5

Isolation Kit
Fit as shown

20

102

26

62

No. & size of bolts
to suit flange selected

20

130

assembled

height

92 dia

Bolt hole PCD to suit

flange selected

Dia to suit flange selected

INTEGRAL FLANGE

Figure 4: Transducer mounting diagram

An isolation kit is provided with each transducer to minimise any ringing transmitted through
the mounting structure.

The transducer must be mounted perpendicular to the monitored surface and, ideally, at least

0.5 metres above it.

The transducer has a 12° inclusive conical beam angle at -3dB and must be mounted with a
clear unobstructed sight of the liquid to be measured over the complete measurement range.

The transducer is provided with integral cable which can be extended up to 300 metres using
a suitable junction box and RG62AU cable. The temperature compensated transducer
requires an additional single core screen extension, or twin-ax cable.
Refer to Page 8 for full details.

Transducer cables and temperature compensation cables can be run together but
should be separated from power cables by at least 150mm and preferably installed in
their own earthed steel conduit.

Ref: MINIFLEX LR MANUAL Rev. 0 5

SECTION 1

FLEXIBLE OR RIGID

CONDUIT.

BRACKET.

ISOLATION KIT.

INTEGRAL FLANGE

UNDER FLANGE.

OPTIONAL

ISOLATION KIT

ISOLATION KIT.

Figure 5: Alternative mounting arrangements for transducers

Do not mount transducers incorporating temperature compensation in direct sunlight.

Do not over-tighten the bolts on flange construction transducers.

Flange transducers are not pressure rated and are suitable only for atmospheric pressure.

ATEX approved transducers must be mounted and wired in accordance with the appropriate

National Standards concerning installation in hazardous environments.

For differential applications mount both transducers at the same height above the zero
datum point.
For open channel flow applications the transducer must be mounted upstream of the flume
or weir as detailed in BS3680 (usually 3 or 4 times maximum head).

Ref: MINIFLEX LR MANUAL Rev. 0 6

SECTION 1

CAUTION: AVOID THE FOLLOWING TRANSDUCER INSTALLATION FAULTS

DO NOT AIM THROUGH

HOLES IN THE TANK

AVOID ROUGH EDGES

IN STANDPIPES

KEEP TRANSDUCERS AND

TEMPERATURE COMPENSATION

PROBES OUT OF DIRECT

SUNLIGHT

KEEP TRANSDUCER
PERPENDICULAR

TO LIQUID.

AVOID INFLOWS OR

OTHER OBSTRUCTIONS

Figure 6: Transducer installation faults

Standpipe Installations

In many applications access to a vessel must be made via a standpipe. However, it is
necessary to observe some basic rules when fitting transducers into standpipes.

BLANKING: Parameter 4.0 should always be set at least 150mm longer than the
length of the standpipe.

STANDPIPE should be in accordance with the following table
DIMENSIONS:

Flange size and minimum
bore of Standpipe

of Standpipe

Maximum length

3" ( 80mm) 300mm
4" (100mm) 300mm

e.g. Using a 4" flanged transducer would require the standpipe length to be no more than
300mm and Pr.4.0 set at 450mm minimum.

The inside of the pipe and joint with vessel top must be clean and free of any
obstructions, seams or welds.

Ref: MINIFLEX LR MANUAL Rev. 0 7

Transducer Cable Extensions
Transducer cables may be extended using junction boxes as shown in Figure 7:

RWV15 / RYV15 Transducer

Transducer

Black

Shield

Blue

Junction

To Miniflex LR

Shield - Term 6

RG62AU

Core - Term 7

Temperature Compensation RWT15 / RYT15 Transducer

Junction

Black

Shield

Blue

To Miniflex LRTransducer

Copper core Term 8

Shield Term 6

Silver core Term 7

RWV15 / RYV15 Transducer- alternative

Black

Shield

Blue

Junction

To Miniflex LRTransducer

Copper core Term 6

Shield Term 9

Silver core Term 7

Beldon 9207

or equal

Figure 7: Transducer lead extension diagram

RWV15 / RYV15 Transducer

Upstream Transducer

Black

Shield

Blue

Downstream Transducer

Black

Shield

Blue

Junction

Junction

To Miniflex LR

Shield - Term 6

RG62AU

Core - Term 22

To Miniflex LR

Shield - Term 9

RG62AU

Core - Term 20

Extend transducer cable if necessary

with RG62AU as shown.

Wire unextended transducers as below

UP & DOWNSTREAM BLACKS

UP & DOWNSTREAM SHIELDS

Note Link

DOWNSTREAM - BLUE

UPSTREAM - BLUE

1

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

DC POWER

21.6-30VDC

9W

SHIELD

+

+

RS485

-

TRANSDUCER

-

SHIELD

HOT

SYNC

SHIELD

ISOLATED
ANALOG
OUTPUT

+

-

RELAY 1

RELAY 3RELAY 2

E

AC POWER

95/110/230V AC

+10%/-10%

50/60 HZ 12VA

Figure 8: Transducer Wiring for Differential Mode

SECTION 1

Beldon 9207

or equal

25

LN

L2

L1

Ref: MINIFLEX LR MANUAL Rev. 0 8

SECTION 1

Temperature Sensor

If a separate temperature sensor is to be used it must be mounted where it will monitor
temperature changes of the air between the transducer and the liquid. This is usually adjacent
to the transducer, but should not be in direct sunlight and should be protected from wind chill.

75 dia.

60

50

33 a/f hex

M20 x 1.5

Cable entry

M20 x 1.5

110

HOUSING: POLYCARBONATE IP65

PROBE: 316SS

16

25

50

Process connection

10 dia.

blue red

no connection

Electrical connections

Note that the connections are not polarised

TEMPERATURE SENSOR RTS-2

35

175

25

12

50

POLARITY

+

UNIMPORTANT

-

LOCK

SCREW

30 dia

34 ref

52

85 dia

9 dia

HOUSING: CAST IRON BLACK EPOXY PAINT

CLASSIFICATION EEx e II T6/IP 65

PROBE: 316SS

EXTERNAL

EARTH

33 HEX

3/4" BSPP

INTERNAL

EARTH

TEMPERATURE SENSOR RTS 2B

Figure 9 Temperature sensor dimensional drawing

Ref: MINIFLEX LR MANUAL Rev. 0 9

SECTION 2

EASY START FOR MINIFLEX LR

The Miniflex LR system requires programming by the operator to obtain the required
measurements and control. To create a basic working system, only the application type and
parameters 2.0 to 5.0 need be programmed. To become familiar with the use of the system, it
is suggested that the following QUICK START guide is used before the instrument is
installed.

Quick Start Guide

1. Connect power and transducer cables as defined on the instrument.

Temperature

compensated
dc Power Supply

Transducer ac Power Supply

Terminal Nos: [1 ] [2] [ 6 ] [ 7 ] [8 ] [ 23 ] [ 24 ] [ 25]
+ve -ve Shield Blue Black E N L

2. Close the front cover and secure in position before switching on the power.
The instrument is supplied factory set to work in distance measurement
up to 10 metres from the transducer.

3. Hold the transducer approximately 1.5 metres from a flat surface and switch on.

After a short period, the display will show the distance (e.g. 1.50) between the
transducer and the surface.

If the transducer is now moved slowly towards the surface, the reading should
decrease. This shows that the unit is correctly wired and is operating as expected in
response to the reduction in distance.

If the reading increases as the transducer is moved towards the surface, it indicates
that the unit has been previously programmed to read level not distance.

Principle of Programming

The Miniflex LR has two modes:-

a) RUN (Normal operating)

In the 'RUN' mode, the instrument is monitoring the target, displaying values, and setting
outputs as programmed by the operator.

b) Program Mode (Programming)

In the 'Program Mode' the operator uses the keypad in conjunction with the display to adjust
the settings and to test that the unit is programmed correctly.

Keypad Definitions

The keypad consists of 5 keys, which are used to programme the operation of the transceiver. These
keys also have secondary functions enabling the operator to view the results being obtained by the
instrument during its normal 'RUN' cycle.

Ref: MINIFLEX LR MANUAL Rev. 0 10

SECTION 2

Primary Key Functions
M = Mode Key - to go from "RUN" to "Program Mode”

- or to go from "Program Mode" to "RUN" Mode
ENT = ENTER - to enter a value or option change or

start a simulation if parameter 12.5.2 is entered.

M

= In program mode to increase the selected digits
value.

= To move back to the main sections of parameters.

ENT

= Scroll through options or move cursor to the right if there is a value.

Alternative Key Functions

The 4 peripheral keys have secondary functions which can be viewed without interrupting the
instrument's operation. In the normal "RUN" mode:-

Press = Display will show head and flow values when in OCM mode.

Press = Display will show the echo distance in metres and "GAIN" with a value
from 0.2 to 100, which represents strength of echo. Low numbers mean

strong echo.

Press = Display will show the operating temperature if using a temperature
compensated transducer or 20ºC with standard transducer, and the
analogue output value in mA.

Press ENT = Display will show the number of Alarms and Starts for relay 1, if the
button is pressed again whilst displaying the value for relay 1 it will
change to relay 2 and if pressed again relay 3.

NOTE:- The Miniflex LR comes with pre-programmed applications, which can be simply modified
to meet your applications requirements. See

SECTION 4 for more details.

1

) To Enter Programme

Press M - Display will show "Program Mode"
Press immediately - Display will show either Distance Measurement, Level

Measurement, Volume Measurement, Pump Control, Open
Channel Flow Monitoring or Differential Measurement.
If you wish to change the selected application press to move through the applications,

you will be asked to enter the password.

) To Enter the Password

2

The first time that you try to change the application, a value or a parameter option, you will
be required to enter the password. The default for this is 1000. You use the and the to
change the digits then ENT when you have finished, if you enter the wrong code the display

value will be cleared and you will need to try again.

Ref: MINIFLEX LR MANUAL Rev. 0 11

SECTION 2

3) To Accept the Current Selection press ENT

Continue to press

ENT - To accept the value or option and move to the

next applicable parameter.

4)

To Change the Value of a Number

Press - To increase value of flashing digit between 0 and 9.
It will then roll over to its minimum and start again.

Press - To move the cursor right and select the next digit to be
changed, then Press

to change its value as above.

Press ENT - To enter the new value. The display will then show the next
parameter in the list.

To Change a Y or N Option

5)

Certain parameters have been put into sections to avoid stepping through numerous
parameters that you may not need to change initially. Each of the sections will have a Yes or
No option.

8.0 Edit relays
No

To change the relay settings use the to change a ‘No’ to a ‘Yes’ or to skip that section just

press ENT.

8.0 Edit relays
Yes

When you have made your selection press ENT to move to the next parameter.

6)

To Change an Option

A display which shows a label enclosed in brackets means that this is the currently selected
value for this parameter, but it can be changed.

e.g. 8.1 Rly1 Options
(Norm–Energised)

Press ENT

8.1.1 Relay 1
Norm - Energised

Press to change the option

8.1.2 Relay 1
Norm-DeEnergised

Press to change the option again

8.1.3 Relay 1
Temp Alarm

Ref: MINIFLEX LR MANUAL Rev. 0 12

SECTION 2

When you come to the option you want press ENT to accept the new selection and move on the next
parameter in the list.

(Shortcut for more familiar users)

Alternatively if you don’t need to make a change to this parameter and its associated settings you can
move to the next parameter in the top level by using the

key.

e.g. 8.1 Rly1 Options 8.2 Rly2 Options 8.3 Rly3 Options

(Norm-Energised) (Norm–Energised) (L.O.E. Alarm)

When you come to a parameter you want to adjust press ENT and follow step 4), 5) or 6) depending
on whether there is a value to enter, a yes or no option or select an option.

To complete Programming and Return to RUN Mode

7)

Press M - The display will show “Storing Values” and “Data stored to
memory”, if a value has been changed. Then "Searching for
target" and then the measured value in the selected units.

8) To Reset all Parameters to Factory Default
Press M if not already

in program mode - Displays "Program mode".

Press To display a parameter (it can be any one)

To reset the instrument you need to be in the first parameter of any application displaying
Distance Measurement, Level Measurement, Volume Measurement, Pump Control, Open
Channel Flow Monitoring or Differential Measurement. If you haven’t appeared here you can
use the key to move back through the program to the first parameter.

Then press both
instrument will reset the parameters, custom tables and totaliser, and reverts back to

displaying Distance Measurement.

and simultaneously and when prompted Enter the password. The

Simulation mode

To simulate a program go to parameter

12.5.2 Simulate then press ENT.
Yes

Keys
M = Exits simulation mode

ENT = Direction to decrease displayed value
= Direction to increases displayed value

= Reduce speed by 2 from a maximum of 64x to 1x. The initial speed
of 1x is set by the rate of change defined in parameter 6.0.

= Increase speed by 2. From 1x to a maximum of 64x.

Ref: MINIFLEX LR MANUAL Rev. 0 13

PARAMETER INDEX

Application
Pr. 1.0 Basic Application

Basic Set-up

Pr. 2.0 Empty Distance
Pr. 3.0 Operatio nal Span
Pr. 4.0 Blanking
Pr. 5.0 Rate Of Ch ange

Volume Measurement

Pr. 6.1 Vessel shape
Pr. 6.2 Displ a y Units
Pr. 6.3 Maximum Display x 100
Pr. 6.4 Displa y F orm at

Open Channel Flow Monitoring (O.C.M.)

Pr. 7.1 Flow device
Pr. 7.2 Maximum Flow Value Type
Pr. 7.3 Maximum Flow
Pr. 7.4 Totaliser Units
Pr. 7.5 External Totaliser Drive
Pr. 7.6 Totaliser Reset

Relays

Pr. 8.1 Relay1 Options
Pr. 8.2 Relay2 Options
Pr. 8.3 Relay3 Op tio n s

Pump Control

Pr. 9.1 Pump Sequence
Pr. 9.2 Duty Standby
Pr. 9.3 Exerciser
Pr. 9.4 Tolerance
Pr. 9.5 Maintenance
Pr. 9.6 Pump Run-on Interval
Pr. 9.7 Pump Run-on Time

MINIFLEX LR

Failsafe

Pr. 10.1 Relay 1 Failsafe
Pr. 10.2 Relay 2 Failsafe
Pr. 10.3 Relay 3 Failsafe
Pr. 10.4 Fail Time
Pr. 10.5 mA Fail

Analogue

Pr. 11.1 Analogue Output
Pr. 11.2 Analogue Value
Pr. 11.3 Test mA
Pr. 11.4 Analogue Scale

Miscellaneous

Pr. 12.1 Offset
Pr. 12.2 Passcode
Pr. 12.3 Number Of Decimals
Pr. 12.4 Relay totaliser
Pr. 12.5 Simulation
Pr. 12.6 Station ID
Pr. 12.7 Synchronisation
Pr. 12.8 Check Search
Pr. 12.9 Maximum gain

SECTION 3

Ref: MINIFLEX LR MANUAL Rev. 0 14

SECTION 3

PROGRAMMING THE INSTRUMENT

NOTE:- (D = ) factory default entry for that parameter.

Step 1: - Select application (Pr.1.0)

Application (D = Distance Measurement)

This will automatically load the applicable default program which can then be
modified to suit your application.
At initial start up display will show one of below listed options: -

Distance Measurement (Page 35)
Level Measurement (Page 36)
Volume Measurement (Page 37)
Pump Control (Page 38)
Open Channel Flow Monitoring (Pages 39 – 40)
Differential Measurement (Pages 41 – 42)

For more details see Pr.1.0 Application Selection Guide (Page 16)

Step 2: - Enter Basic Set-up parameters

Complete Basic Set-up section - Page 17

Step 3: - Dependent on application, go to appropriate section in manual.

For Distance Measurement go to Page 35.
For Level Measurement go to Page 36.
For Volume Measurement go to Page 37.
For Pump Control go to Page 38.
For Open Channel Flow Monitoring go to Pages 39 - 40.
For Differential Measurement go to Pages 41 - 42.

Step 4: - Set any relay conditions

Relay section go to Pages 24 - 26

Step 5: - Set any failsafe conditions

Failsafe section go to Page 30

Step 6: - Set any analogue conditions

Analogue section go to Pages 31 - 32

Step 7: - Set any miscellaneous conditions

Miscellaneous section go to Pages 33 - 34

Step 8: - Exit program mode and return to run mode

Go to Section 7 Page 13

Ref: MINIFLEX LR MANUAL Rev. 0 15

SECTION 3

Pr.1.0 APPLICATION SELECTION GUIDE

Miniflex LR can be programmed for Distance measurement, Level measurement, Volume
measurement, Pump control, OCM and Differential measurement. Each application selected
will allow access to only parameters associated with that application.

Distance Measurement

Displays a distance measurement; relay set and reset points can be programmed and a relay
can be programmed for Loss Of Echo indication. A 4-20mA output proportional to the
displayed distance is provided.

Level Measurement

Displays a level; relay set and reset points can be programmed and a relay can be
programmed for Loss Of Echo indication. A 4-20mA output proportional to level is provided.

Volume Measurement

Displays contents, ullage or both contents and ullage. Choose from a variety of vessel shapes
including vertical and horizontal cylinders or a 24-point custom table. Display in Litres,
Gallons, Tons, Tonnes, Kg, m3 or %. Provide a 4-20mA output proportional to contents or
ullage.

Pump Control

For pump control applications; can include pump sequencing, duty standby, pump
maintenance and pump run on.

Open Channel Flow Monitoring (O.C.M.)

For flow measurement, using BS3680 flumes and weirs, Parshall flumes, or custom table for
non-standard devices. Displays flow rate in litres/sec or gallons/sec and totalises in a variety
of units. Provides a pulse output to drive an external totaliser and a 4-20mA output
proportional to level or flow.

Differential Measurement

Uses two transducers switched automatically. The display indicates the difference between
two levels and gives a 4-20mA output proportional to the reading. Relay set and reset points
can be programmed and a relay can be programmed for Loss Of Echo indication.

Ref: MINIFLEX LR MANUAL Rev. 0 16

Basic Set-up

Pr.2.0

Pr.3.0

Pr.4.0

Pr.5.0

Empty Dist Empty Distance in Metres

Distance Level Volume Pump OCM Differential

Default 10.00 6.000 6.000 6.000 1.200 2.000

The approximate distance from the face of transducer to the furthest point away,
usually the bottom of the container or channel. Enter the distance in metres.

Resolution is a function of this parameter.

Span Operational Span in Metres

Distance Level Volume Pump OCM Differential

Default 10.00 5.500 5.500 5.500 0.280 0.500

The distance between the furthest and nearest points over which measurement is
required. Enter the distance in metres.
For OCM, span = maximum head.
For differential applications, the value required is the maximum difference in the
levels to be measured.

Blanking (D = 0.500 Metres)

Blocking or Blanking Zone.

Minimum distance from transducer face to target, within which no return echoes will
be processed. It is important to ensure that the target material does not enter this
zone.

Enter in metres.

DO NOT REDUCE THE FACTORY SET VALUE WITHOUT REFERENCE
TO HYCONTROL.

RateOfChange Rate Of Change in Metres/Min

Distance Level Volume Pump OCM Differential

Default 10.00 1.000 1.000 1.000 1.000 1.000

This value should be as small as possible but greater than the maximum rate of
change of level. Do not
greater than 1.0m/min or that the system continually 'tracks' a level lower than the
actual level.

If it is necessary to change the value, enter the new value in m/min; the suggested
range is 0.1 to 10.

SECTION 3

change this value unless you know that the rate of change is

Ref: MINIFLEX LR MANUAL Rev. 0 17

Volume Measurement

The following main parameters set up a volume measurement application.

6.0 Edit
Volume No

No

Pr.6.1

Vessel shape (D = Linear)

Options displayed

6.1.1 Linear Vessel Linear vessel

6.1.2 Vertical Pyramid Bottom Vertical cylindrical tank with pyramid bottom

6.1.3 Vertical Conical Bottom Vertical cylindrical tank with conical bottom

6.1.4 Vertical Spherical Bottom Vertical cylindrical tank with half spherical bottom

6.1.5 Vertical Dished Bottom Vertical with dished bottom

6.1.6 Horizontal Cylind Flat Ends Horizontal cylinder with flat ends

6.1.7 Horizontal Cylind Dish Ends Horizontal cylinder with dished ends

6.1.8 Custom table – 24point 2 4 point linearisation table – See appendix 1

Additional parameters may be required dependent on vessel shape selection.

6.1.1 LINEAR VESSEL

6.1.2 VERTICAL PYRAMI D BO TT OM

6.1.3 VERTICAL CONICAL BOTTOM

6.1.4 VERTICAL SPHERICAL BOTTOM.

Yes

6.1 Vessel shape
(Linear)

Pr.3.0

Pr. 6.1.2.1
Pyramid h

Pr.6.1.3.1

Cone h

Pr. 6.1.4.1

Sphere h

6.2 Display Units
(Litres)

6.3 MaxDisp x100
(001.0)

Description

No additional parameters

Pr 6.1.2.1 Pyramd h (D = 0.00)

Pr.3.0

Pr.3.0

Pr.3.0

Enter pyramid h in metres.

Pr 6.1.3.1 Cone h (D = 0.00)
Enter cone h in metres.

Pr 6.1.4.1 Sphere h (D = 0.00)
Enter sphere h in metres.

6.4 Display Format
(Contents)

SECTION 3

Ref: MINIFLEX LR MANUAL Rev. 0 18

SECTION 3

Pr.6.1.5.2

Radius R

Pr.3.0

Pr.6.1.5.1

Dish h

6.1.5 VERTICAL DISHED BOTTOM.

Pr 6.1.5.1 Dish h (D = 0.00)
Enter dish h in metres.

Pr 6.1.5.2 Radius R (D = 0.00)
Enter radius R in metres.

Pr.3.0

6.1.6 HORIZONTAL CYLINDER FLAT ENDS.

6.1.7 HORIZONTAL CYLINDER DISHED ENDS.

Pr.6.1.7.2

Cylndr L

Pr.6.1.7.1

Dish L

Pr.3.0

No additional parameters

Pr 6.1.7.1 Dish L (D = 0.00)

Enter dish L in metres.

Pr 6.1.7.2 Cylndr R (D = 0.00)
Enter cylinder R in metres.

Pr. 6.2

DisplayUnits Display Units (D = %)

Options displayed

6.2.1 Units Litres Un its label displayed in Litres

6.2.2 Units Gallons Units label displayed in Gallons

6.2.3 Units Tons Units label displayed in Tons

6.2.4 Units Tonnes Units label displayed in Tonnes

6.2.5 Units Kg Units label displayed in Kg

6.2.6 Units m3 Units label displayed in m3

6.2.7 Units % Units label displayed in %

Description

Pr. 6.3 MaxDsp x 100 Maximum display x 100 (D = 1.0)

Enter - full scale display ÷ 100
e.g. if 100% = 2000 litres and display required in litres then set Pr. 6.3 to 2000 ÷ 100
= 20.

This parameter should not be adjusted in conjunction with 6.2.7 Units % as it will

invalidate the % reading.

Pr. 6.4

Disp. Format Display Format (D = Contents)

Options displayed Description

6.4.1 Display Contents Display contents only

6.4.2 Display Ullage Display ullage only

6.4.3 Display Ullage &Conte nts Display both ullage and contents

Ref: MINIFLEX LR MANUAL Rev. 0 19

SECTION 3

Open Channel Flow Monitoring (O.C.M.)

The following main parameters set up an Open Channel Flow Monitoring application.

7.0 Edit
OCM No

No

Yes

7.1 Flow Device
(Rect.Flume 3/2)

7.2 Max Flow Val
(Auto calculate)

7.3 Maximum Flow
(50.00)

7.4 Total. Units
(in m3)

7.5 Ext. Tot. Drv.
(0.000)

7.6 Total Reset
(No)

Pr.7.1

Flow device (D = Rect. Flume 3/2)

The instrument provides options for three standard ratio-metric flow devices, three
BS3680 flow devices, a variety of Parshall flumes or a custom 24-point table.
Select the flow device from the following list.

Options displayed

7.1.1 Std. Ratio Rect. Flume 3/2 Standard Ratio Rectangular flume 3/2

7.1.2 Std. Ratio Rect. Weir 3/2 Standard Ratio Rectangular weir 3/2

7.1.3 Std. Ratio V-Notch Weir 5/2 Standard Ratio V-notch weir 5/2

7.1.4 BS3680 Rect. flume BS3680 Rectangular flume * Follow BS3680 set-up at step A

7.1.5 BS3680 Rect. weir BS3680 Rectangular weir * Follow BS3680 set-up at step B

7.1.6 BS3680 V-notch weir BS3680 V-notch weir * Follow BS3680 set-up at step C

7.1.7 Parshall Flumes Parshall Flumes * Follow PARSHALL set-up step D

7.1.8 Custom table 24-point linearization table. Refer to appendix 1

Description Action

BS3680 set-ups
Rectangular flume Rectangular weir V-notch weir

Step A Step B Step C

7.1.4 BS3680
Rect. Flume

ENT

7.1.5 BS3680
Rect. Weir

ENT

Throat Width

0.000 Metres

Crest Width

0.000 Metres

ENT

ENT

Channel Width

0.000 Metres

ENT

Throat Length

0.000 Metres

ENT

Channel Width

0.000 Metres

ENT

Crest Height

0.000 Metres

Crest width (Metres)

Throat width (Metres)

Hump Height

0.000 Metres

Throat length (Metres)

Channel

width

(Metres)

Channel width (Metres)

Crest

height

(Metres)

7.1.6 BS3680
V-Notch Weir

ENT

Angle

000.0 Degrees

ENT

Channel Width

0.000 Metres

ENT

Vertex Height

0.000 Metres

Angle (Degrees)

Channel width (Metres)

Vertex

height

(Metres)

Ref: MINIFLEX LR MANUAL Rev. 0 20

Pr. 7.2

SECTION 3

Step D: -

Select from one of the following options if a Parshall flume is required
(See also Appendix 5)

Options displayed

7.1.7.1 Parshall 1,2,3,24 inches 1, 2, 3 or 24 inches

7.1.7.2 Parshall 6 inches 6 inches

7.1.7.3 Parshall 9 inches 9 inches

7.1.7.4 Parshall 12 inches 12 inches

7.1.7.5 Parshall 18 inches 18 inches

7.1.7.6 Parshall 36 inches 36 inches

7.1.7.7 Parshall 48 inches 48 inches

7.1.7.8 Parshall 72 inches 72 inches

7.1.7.9 Parshall 96 inches 96 inches

7.1.7.10 Parshall 10 – 50 feet 10 to 50 feet

Max Flow Val

Description - Parshall flume type

* Only applies if 7.1 set to BS3680

Maximum Flow Value (D = Auto calculation)

There are two types of calculation either Auto calculate, if you want the instrument to
calculate the flow automatically or Input by User if you want to enter the flow value
manually.

7.2 Max Flow Val
(Auto calculate)

ENT

7.3 Maximum Flow
(50.00)

ENT

7.3.1 Max. Flow

50.00

Calculates flow and Manually enter flow
stores in Pr.7.3 in Pr.7.3.1

7.2.1 Automatic
calcul a tion

7.2.2 User sets
maximum flow

Options displayed

7.2.1 Automatic Calculation

7.2.2 User sets maximum flow

Description Action following selection

This option calculates
maximum flow based on the
entered flume or weir values
and the maximum head in
metres @ Pr.3.0 Span. The
calculated flow is stored in
litres/sec @ Pr.7.3.1.

Selecting this option requires
you to enter manually the
maximum flow in litres/sec
@ Pr.7.3.1 and the
maximum head in me tres @
Pr.3.0.

Calculates a new flow value
based on entered parameters
and rewrites this flow in
litres/sec then displays this
value in Pr.7.3

Displays Pr.7.3.1. does not
modify the existing entered
value.

Ref: MINIFLEX LR MANUAL Rev. 0 21