MonoScan User`s Manual - SOLID APPLIED TECHNOLOGIES LTD

MonoScan User`s Manual - SOLID APPLIED TECHNOLOGIES LTD
MonoScan
User's Manual
ii
MonoScan User's Manual
iv
MonoScan User's Manual
Important Notice
This manual is delivered subject to the following conditions
and restrictions:
 This manual contains proprietary information belonging
to Solid Applied Technologies Ltd. Such information is
supplied solely for the purpose of assisting explicitly
and properly authorized users of MonoScan.
 No part of its contents may be used for any other
purpose, disclosed to any person or firm or reproduced
by any means, electronic or mechanical, without the
express prior written permission of Solid Technologies
Ltd.
 The text and graphics are for the purpose of
illustration and reference only. The specifications on
which they are based are subject to change without
notice.
 Information in this document is subject to change
without notice. Corporate and individual names and
data used in examples herein are fictitious unless
otherwise noted.
Copyright  2005. All rights reserved.
MonoScan® is a registered mark of Solid Applied Technologies Ltd.
Other company and brand products and service names are trademarks
or registered trademarks of their respective holders.
Date
Revision
Software Version
Catalog Number
Feb. 2014
1.31
4.090 English
680001E
Safety Guidelines
v
Safety Guidelines
 MonoScan must be installed, connected and operated
according to the instructions in this Manual.
 Installation in hazardous area should be according to
this manual and relevant control drawings. For more
information consult with your distributor.
 If installed incorrectly or used for applications for which
it is not intended, application-related dangers may
arise.
 Only qualified personnel are authorized to install and
operate MonoScan.
 Do not open the MonoScan unit. If the unit is
opened, the warranty is null and void.
 Modifications and repairs to MonoScan are permissible
only when the manufacturer expressly approves them.
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MonoScan User's Manual
Table of Contents
Chapter 1 ........................................................................................ 1
Introducing MonoScan..................................................................................... 1
MonoScan Specifications ................................................................................3
Measuring Ranges .................................................................. 3
Mechanical Specifications ...............................................................................4
Electrical Specifications ............................................................ 4
Chapter 2 ........................................................................................ 6
Installing MonoScan ........................................................................................ 6
Precautions .....................................................................................................6
Installing MonoScan ........................................................................................ 7
Installing MonoScan on Threaded Flange/Thread-Free Flange ......... 8
Installing MonoScan via Extension Pipes .................................... 10
Non-Intrinsically Safe Connections ............................................................... 14
Chapter 3 .......................................................................................23
Setting Up and Calibrating MonoScan ........................................................... 23
Using MonoScan Functions ........................................................................... 26
Resetting MonoScan ..................................................................................... 29
Entering the Tank Height Value .................................................................... 30
Defining Interfering Signals ........................................................................... 32
Configuring 4mA Current Output ................................................................... 36
Configuring 20mA Current Output.................................................................. 40
Table of Contents
vii
Selecting Low/High Dynamic Speed ............................................................. 42
Defining Working Area ..................................................................................44
Selecting Distance or Level Display .............................................................. 46
Entering factor for Gas Compensation ........................................................... 48
Restoring the Default Settings .......................................................................50
Shifting the Blocking Distance .......................................................................51
Verifying the Version Number .......................................................................52
Defining 22mA Signal Error Messages .......................................................... 53
Chapter 4 ....................................................................................... 55
MonoScan Open Channels ............................................................ 55
Selecting the Flow Measurement Settings .....................................................55
Open Channels Flow Measurements ............................................................. 57
Flume/Weir Types ................................................................. 58
Flumes/Weirs - European Standard ........................................... 59
Rectangular Suppressed Sharp-Crested Weir (Type 1) ................... 59
Rectangular Contracted Sharp-Crested Weir (Type 2) .................... 60
Trapezoidal (Cipolletti) Sharp-Crested Weir (Type 3) ...................... 61
V-Notch (Triangular) Sharp-Crested Weir (Type 4) ....................... 62
Khafagi-Venturi Flume (Type 5) ............................................... 63
Parshall Flume (Type 6).......................................................... 64
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 7) . 65
H Flume (Type 8) .................................................................. 66
Neyrpic Venturi Flume/Long-Base Weir (Type 9) .......................... 67
Flumes/Weirs – American Standard ............................................ 69
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MonoScan User's Manual
Rectangular Suppressed Sharp-Crested Weir (Type 1) ................... 69
Rectangular Contracted Sharp-Crested Weir (Type 2) ................... 70
Trapezoidal (Cipolletti) Sharp-Crested Weir (Type 3) ..................... 71
V-Notch (Triangular) Sharp-Crested Weir (Type 4) ....................... 72
Parshall Flume (Type 5) .......................................................... 73
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 6) ... 74
H Flume (Type 7) .................................................................. 75
Leopold-Lagco Flume (Type 8) ................................................. 76
Chapter 5 .......................................................................................77
Troubleshooting MonoScan ........................................................................... 77
22mA Signal Error Messages ........................................................................ 80
Appendix A – Gas Factor Table ......................................................82
Appendix B – Installation tips .........................................................85
Appendix C – Nomenclature ...........................................................88
Index ..............................................................................................81
Table of Figures
ix
Table of Figures
Figure 1: Front View of MonoScan ..............................................................................2
Figure 2: Side View of MonoScan ................................................................................2
Figure 3: Threaded Flange/Thread-Free Flange Mounting ...........................................8
Figure 4: Threaded Flange/Thread-Free Flange Mounting ......................................... 11
Figure 5: MonoScan Connector Front View ............................................................... 12
Figure 6: MonoScan Conduit Adapter ........................................................................ 13
Figure 7: Non-Intrinsically Safe Positive Ground Connection ................................... 14
Figure 8: Non-Intrinsically Safe Negative Ground Connection .................................. 14
Figure 9: Intrinsically Safe Positive Ground Connection............................................ 19
Figure 10: Intrinsically Safe Negative Ground Connection ........................................ 20
Figure 11: MonoScan Functions Menus ..................................................................... 25
Figure 12: MonoScan Display and Function Buttons ................................................. 26
Figure 13: Scan Distance Process ............................................................................... 32
Figure 14: Defining Working Area ............................................................................. 44
Figure 15: Rectangular Suppressed Sharp-Crested Weir ............................................ 59
Figure 16: Rectangular Contracted Sharp-Crested Weir ............................................. 60
Figure 17: Trapezoidal (Cipolletti) Sharp-Crested Weir ............................................. 61
Figure 18: V-Notch (Triangular) Sharp-Crested Weir ................................................ 62
Figure 19: Khafagi-Venturi Flume .............................................................................. 63
Figure 20: Parshall Flume ........................................................................................... 64
Figure 21: Palmer Bowlus Flume Trapezoidal Throat Cross-Selection ...................... 65
Figure 22: H Flume ..................................................................................................... 66
Figure 23: Neyrpic Venture Flume ............................................................................. 67
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MonoScan User's Manual
Figure 24: Long-Base Weir ........................................................................................ 68
Figure 25: Rectangular Suppressed Sharp Crested Weir ............................................ 69
Figure 26: Rectangular Contracted Sharp Crested Weir ............................................. 70
Figure 27: Trapezoidal (Cipolleti) Sharp Crested Weir .............................................. 71
Figure 28: V-Notch (Triangular) Sharp Crested Weir ................................................ 72
Figure 29: Parshall Flume ........................................................................................... 73
Figure 30: Palmer Bowlus Flume Trapezoidal Throat Cross Section ......................... 74
Figure 31: H Flume..................................................................................................... 75
Figure 32: Leopold Lagco Flume ............................................................................... 76
Introducing MonoScan
Chapter 1
Introducing MonoScan
MonoScan is an ultrasonic, continuous-level measurement
gauge of mono-block construction (combining the sensor
and electronic components in a single unit). MonoScan
measures the height of both liquids and solids accurately.
It can be used for the following measurement tasks:
 Liquid tanks with calm surfaces
 Solids tanks that are dust-free
 Open channel flow measurement
MonoScan has a range of up to 15 m (49.21 ft) with
an accuracy of 0.25% of the maximum measuring range.
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MonoScan User's Manual
The following diagrams show the front and side views of
MonoScan, and its dimensions:
Figure 1: Front View of MonoScan
Figure 2: Side View of MonoScan
Introducing MonoScan
3
MonoScan Specifications
Accuracy
0.25% of max range
(1cm max [short])
(3.5cm max [std])
Resolution
1 mm (0.04")
Beam angle
5° @ 3db point
Ambient temperature
compensation
Automatic
Measuring Ranges
MonoScan L for liquids
MonoScan S for solids
MonoScan O for open
channels
Short Range
0.25 m – 5 m
0.82 ft – 16.4 ft
Standard
0.6 m – 15 m
1.96 ft – 49.2 ft
Short Range
0.25 m – 3.5 m
0.82 ft – 16.4 ft
Standard
0.6 m – 8.5 m
1.96 ft – 27.8 ft
Short Range
0.25 m – 5 m
0.82 ft – 16.4 ft
Standard
0.6 m – 15 m
1.96 ft – 49.2 ft
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MonoScan User's Manual
Mechanical Specifications
Enclosure
IP 65, Mono-block construction.
Plastic enclosure: ABS+UV
Pollution degree
2 (as per IEC61010)
Insulation category
II (as per IEC61010)
Wetted parts
Sensor body: Polypropylene, PVDF, Coated
aluminum (ECTFE).
Operating temperature
-40 C to + 70 C (-40 F to
Mounting
2" BSP or 2" NPT
Operating pressure
0.9 - 2 bar
Dimensions
289 x 107 x 85 mm (11.38 x 4.21 x 3.35")
Weight
Up to 1.4 kg (3.08 lb)
+158 F)
Electrical Specifications
Display
Integral LCD, four digits.
Loop current
4 – 20 mA, 727  @ 28 VDC
Supply
Certificates
At least 12.0 VDC on terminals. Recomended:
15-28VDC (CE certified)
CE – EMC, FCC.
ATEX: EEX ia IIC T4
NEPSI: Ex ia IIC T4
Introducing MonoScan
5
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MonoScan User's Manual
Chapter 2
Installing MonoScan
Precautions
 Ensure that MonoScan is mounted in an area that meets the
stated temperature, pressure and technical specifications.
 Ensure that high-voltage sources or cables are at least 1 m
away from the sensor and its cable.
 Use round cables with minimum diameter of 6 - 7 mm to
ensure that the unit remains sealed, IP 65.
 Ensure that cables are routed correctly and tightened along
walls or pipes.
 Installation and operation of this product should be performed,
according to the Product User Manual and Product
Certification. Otherwise the use of this product is prohibited.
Installing MonoScan
Installing MonoScan
When installing MonoScan, ensure that it is:
 Mounted above the dead-zone area.
NOTE:
If the device enters the blocking distance (dead
zone), it will not measure correctly.
 Positioned
away from
Cm (4")
(40") in
at least 0.5 m (1.64 ft)
the tank walls. Add 10
spacing for each 1m
range.
 Perpendicular to the surface of the
target.
NOTE:
Even the slightest difference in angle may affect
echo quality.
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MonoScan User's Manual
 Placed as far as possible from noisy
areas, such as a filling inlet.
NOTE:
When installed in a humid environment it is recommended to
position the sensor on a tripod on top of the vessel.
Installing MonoScan on Threaded
Flange/Thread-Free Flange
MonoScan is available in two thread types, 2" BSP or 2"
NPT.
MonoScan can be installed with threaded-flange mounting
or with thread-free flange mounting, as shown below:
Installing MonoScan
9
Figure 3: Threaded Flange/Thread-Free Flange Mounting
NOTES:
When installing a thread-free flange mounted unit, you will need a 2"
locking nut to secure the unit inside the tank.
When installing a threaded flange, ensure that it matches the MonoScan
threads.

To install MonoScan:
1 Insert the threaded end of MonoScan into the aperture
at the top of the tank or pipe.
2 Bolt MonoScan into place in one of the following
ways:
 Threaded-flange mounting: Screw the unit into a
flange with a threaded 2" hole.
 Thread-free mounting: Place MonoScan in the
flange, and bolt it from within the tank with a 2"
locking nut.
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MonoScan User's Manual
NOTE:
Tighten the nut by hand only. When tightening the nut, hold the
lower part of the MonoScan unit. Make sure that the seal is leak
proof.
Installing MonoScan via Extension Pipes
If the level of the measured surface falls within the deadzone area, you should use an extension pipe to mount
MonoScan.
When using an extension pipe, ensure that:
 The sensor is positioned in the center
of the pipe.
 The pipe extension is exactly
perpendicular to the surface of the
target.
 The internal pipe diameter is at least
3.0" wide.
 The pipe is preferably made of plastic
and must have a smooth interior
surface.
 The pipe should not protrude inside
the tank.
 The tank drilling should be at least in
size of the internal pipe diameter and
with smooth edge.
When installing the MonoScan with extension pipes, follow
these specifications:
Installing MonoScan
Pipe Length*
Internal Pipe Diameter
0.5 m (1.64ft)
>3.0"
* Note: Measured from the sensor's lower edge.
NOTE:
1. It is always recommended to use interference signal feature
(Pr.03) to locate interfering signals when using an extension pipe.
2. The sensor's lower edge may be a) aligned with the extension
pipe's upper edge or b) protrude it by up to 6.5 cm. See Figure 4
below.
a)
b)
Figure No.4: Extension Pipe Recommendations
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MonoScan User's Manual
Connecting the MonoScan to a Power
Cable
Using a PG7 connector
1
Remove the retaining screw from the electrical
connector.
2
Remove the male part from the MonoScan unit.
3
Separate the plastic electrical connector shell from the
wiring block.
4
Connect the +24V wire to Terminal 1, connect the 24V wire to Terminal 2 on the Wiring Block.
5
Snap the electrical connector wiring block back into the
electrical connector shell.
6
Pull the electrical connector to the MonoScan socket
plug and fasten with the retaining screw provided.
Installing MonoScan
13
Figure 5: MonoScan Connector Front View
NOTE:
The cable for the mating connector must be at least 6 mm in diameter.
Using a conduit
1 Remove the four retaining screws from the conduit
adapter cover.
2 Pull the electrical wires through the 1/2" NPT/ M20
conduit connection.
3 Connect the -24V wire to Terminal 1, connect the
+24V wire to Terminal 2 on the Wiring Block.
4 Return the adapter's cover to its place properly. Make
sure that the O-ring is placed correctly. Fasten the
four retaining screws.
Figure 6: MonoScan Conduit Adapter
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MonoScan User's Manual
NOTE:
The conduit adapter should not exceed a torque of 50 lb/In.
To maintain the MonoScan properly sealed, make sure that conduit is
firmly screwed to the conduit's adaptor.
Installing MonoScan
Non-Intrinsically Safe Connections
Figure 7: Non-Intrinsically Safe Positive Ground Connection
Figure 8: Non-Intrinsically Safe Negative Ground Connection
15
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MonoScan User's Manual
Power Supply and Load Resistance
Recommendations
The following table specifies the recommended resistance*
range for each power supply voltage (Non-Intrinsically
Safe).
Power Supply
Voltage
Minimum
Resistance Value
Maximum
Resistance Value
15 V
0 
136 
18 V
0 
272 
24 V
41 
545 
28 V
68 
727 
*Note: The resistance value is the total sum of the series
resistor (or PLC resistance) and the lines resistance. The
minimum voltage level on terminals should be not less than
120 VDC.
Ripple/Noise Parameters Recommended for the
Power Supply
The following ripple/noise parameters are recommended for
the power supply:
 100 mvp-p max
Power Supply types recommendations
Installing MonoScan
17
 Prefer a regulated switching power supply.
 A rectified power supply is not recommended.
 When powering by a battery, avoid the using of
switched charger.
Feeding Via PLC
 Verify that the voltage level on the MonoScan terminals
is at least 12.0 VDC.
 Check PLC specifications for grounding options.
 It is good practice to add 150 Ohm series resistor
between MonoScan positive terminal and PLC.
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MonoScan User's Manual
Intrinsically Safe Connections
Hazardous Area Installation
(For Ex version)
Installation of the equipment shall be in accordance with
the NEC Articles 504 and 505 and ISA RP 12.06.01
Recommended Practice for the Installation of Intrinsically Safe
Circuits.
Instructions specific to hazardous area installation.
(Reference European ATEX Directive 94/9/EC, Annex II, 1.0.6.)
The following instructions apply to equipment covered by
certificate number Sira 03ATEX2134X:
Remark: The certificate number has an 'X' suffix, to
indicate a special certification condition which does not
apply to the MonoScan.
 The equipment may be used in a hazardous area with
flammable gases and vapors with Apparatus Groups IIC,
IIB and IIA and with temperature classes T1, T2, T3 and
T4.
 The equipment is certified for use in ambient temperatures
in the range of -40C to +70C and should not be used
outside this range.
 Installation shall be carried out in accordance with the
applicable code of practice by suitably trained personnel.
Installing MonoScan
19
 The equipment is not intended to be repaired by the user.
Repair of this equipment shall be carried out in
accordance with the applicable code of practice.
 If the equipment is likely to come into contact with
aggressive substances, then it is the responsibility of
the user to take suitable precautions that prevent it
from being adversely affected, thus ensuring that the
type of protection is not compromised.
Aggressive Substances - e.g. acidic liquids or gases that
may attack metals or solvents that may affect polymeric
materials.
Suitable Precautions- e.g. regular checks as
part of routine inspections or establishing from
the material’s data sheet that it is resistant to
specific chemicals.
 Certification marking as detailed in LB0010C.
MonoScan User's Manual
20
Device parameters:
Vi = 28 V
Ii = 93mA
Pi = 1.71 W
Ci = 0 Pf
Li = 0uH
ATEX: EX ia IIC T4
Ta = +70°C; Type 4.
Voltage to barriers should not exceed 250V.
Figure 9: Intrinsically Safe Positive Ground Connection
Producer
Zener Barrier
Part Number
MTL
7728-
STAHL
9001/00280-085-101
Intrinsic
Safety
Approval
Interconnection
Barrier
Terminal
MonoScan
Terminal
Series
resistance
CENELAC,
CSA,
ATEX, FM,
UL
3
4
1
2
333Ω
CENELAC,
CSA,
ATEX, FM,
UL
3
4
1
2
375Ω
NOTES:
MonoScan (IS) is approved for hazardous area installation with the above
specified barriers. Consult factory for a detailed information regarding usage
of alternative barriers.
Installing MonoScan
21
Device parameters:
Vi = 28 V
Ii = 93mA
Pi = 1.71 W
Ci = 0 pF
Li = 0uH
ATEX: EX ia IIC T4
Ta = +70°C; Type 4
Voltage to the barriers should not exceed 250V.
Figure 10: Intrinsically Safe Negative Ground Connection
Producer
Zener Barrier
Part Number
MTL
7787+
STAHL
9001/01-280085-101
Intrinsic
Safety
Approval
Interconnection
Barrier
Terminal
MonoScan
Terminal
Series
resistance
CENELAC,
CSA, ATEX, FM,
UL
3
4
1
2
333Ω
CENELAC,
CSA, ATEX, FM,
UL
3
4
1
2
375Ω
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MonoScan User's Manual
NOTE:
MonoScan (IS) is approved for hazardous area installation with the above
specified barriers. Consult factory for a detailed information regarding usage of
alternative barriers.
Power Supply and Load Resistance
Recommendations
The following table specifies the recommended power
supply for MonoScan (Intrinsically Safe).
Power Supply
Voltage
Minimum
Resistance Value
Maximum
Resistance Value
24 V
41 
545 
28 V
68 
727 
* Note: The resistance value is the total sum of the series
resistor (for PLC resistance) and the barrier resistance and
the lines resistance. The minimum voltage level on terminals
should not be less than 12.0 VDC.
For any question before installation please consult with
your distributor.
For a detailed connection diagram refer to Non-Intrinsically
Safe Connections drawings.
NOTE:
Warning!
Explosion Hazard – Do not disconnect while circuit is live, unless the
area is known to be Non-Hazardous.
Installing MonoScan
23
Ripple/Noise Parameters Recommended for the
Power Supply
The following ripple/noise parameters are recommended for
the power supply:
 100 mvp-p max
Power Supply type recommendations
 Prefer a regulated switching power supply.
 A rectified power supply is not recommended.
 When powering by a battery, avoid the use of
switching charger.
Feeding Via PLC
 Verify that the voltage level on the MonoScan terminals
is at least 12.0 VDC.
 Check PLC specifications for grounding options.
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MonoScan User's Manual
Chapter 3
Setting Up and Calibrating
MonoScan
This chapter explains how to set up and calibrate
MonoScan for accurate measurement monitoring.
MonoScan is supplied with preprogrammed default settings,
making it ready for immediate operation. There is no need
to change the default settings, unless you wish to calibrate
MonoScan for your specific requirements; however, it is
recommended that you replace the default tank height
value with the actual tank height, as described on page
32. When using MonoScan, the tank height is calculated
as the distance from the surface of the sensor to the
bottom of the tank. You should enter this value whenever
tank height is required. (For flow measurement, enter the
precise flume height.)
Setting Up and Calibrating MonoScan
25
MonoScan contains eleven programs, referred to as
functions, which enable you to change the default settings
and calibrate MonoScan as required. These functions are
accessed from a functions menu. The functions Pr01, Pr02,
Pr04 and Pr05 are the most important to ensure correct
usage of your MonoScan device (with the addition of
Pr00 if using a MonoScan O model). Function Pr03 may
be used if there are interfering signals.
The remaining functions (Pr06, Pr07, Pr08, Pr09 and Pr10)
enable you to customize MonoScan for your monitoring
requirements or to restore factory default settings.
NOTE:
Some functions are only relevant for particular MonoScan models.
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MonoScan User's Manual
The diagram below shows the functions available in the
functions menus for the MonoScan O, L and S models.
Figure 11: MonoScan Functions Menus
Setting flow measurement parameters (function Pr00) for
the MonoScan Open Channels model is described in
Chapter 4, MonoScan Open Channels. Setting parameters
for all other functions and accessing the functions are
described in this chapter.
Setting Up and Calibrating MonoScan
Using MonoScan Functions
The LCD display screen, functioning in "normal" mode,
provides continuously updated measurement readings. The
display screen is also used to view MonoScan's menu
options, function settings and data values, accessed by
using MonoScan's function buttons.
The picture below shows the upper part of MonoScan:
LCD display
Next button
Enter button
Back button
Escape button
Figure 12: MonoScan Display and Function Buttons
The function buttons are used to perform various operations,
summarized in the following table.
27
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MonoScan User's Manual
Button
Uses Include:
 Accessing the functions menu (when
pressed simultaneously with
)
 Selecting functions
 Progressing to the next step of a
function
 Moving from left to right between
displayed digits (see note on the
following page)
 Saving changes to data
 Accessing the functions menu (when
pressed simultaneously with
)
 Exiting the functions menu to restore the
distance reading
 Moving from right to left between
displayed digits (see note on following
page)
 Exiting a function without saving changes
 Clearing error messages
 Scrolling through the functions menu
or
 Scrolling through available data values in
functions
 NEXT button only: Recording interfering
signals (see page 342)
Setting Up and Calibrating MonoScan
29
NOTE:
Within some functions, the digits in the displayed value can be
individually modified. This is indicated by a flashing digit (flashing digits
are shown in gray in the display illustrations, for example,
). In
this case, the ENT and ESC buttons enable you to move between the
digits. Each flashing digit can be modified using the BACK and NEXT
buttons.

To start up MonoScan and access the functions:
Press/Action

Connect
MonoScan to
power supply

After a brief
pause

and
(simultaneously
)

or

Display
Explanation
Temporary display while
MonoScan takes a
reading.
For example:
Distance reading.
For example:
Enters the functions
menu.
Used to search for the
required menu
selection.
Accesses the selected
function.
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MonoScan User's Manual
NOTES:
If an error message
the main menu.
appears, press the ESC button to return to
Values are displayed in meters and centimeters or feet and inches,
according to the version of MonoScan.
Resetting MonoScan
The PR01 function enables you to do a reset, refreshing
the MonoScan measurement reading. (Other saved function
settings are not changed.) After resetting, the actual
reading is displayed on the LCD, and MonoScan begins to
scan (same as in turning the unit on/off).
The reset function may sometimes be required after
changing one of the MonoScan's settings or after receiving
an error message.
NOTE:
During reset the MonoScan will display 8.8.8.8 followed by 22mA current
output.
Setting Up and Calibrating MonoScan

To reset MonoScan:
Press/Action

Display

Explanation
Required menu
selection.
and
(simultaneously)


31
Temporary display while
MonoScan takes
reading.
After a brief
pause
and
(simultaneously)
For example,
Distance reading.
Returns to the functions
menu.
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MonoScan User's Manual
Entering Distance to Empty Level
(Tank Height)
The Pr02 function enables you to enter distance from
sensor face to empty level. When sensor face coincides
with tank top, you may enter the height of the tank.
Default value is the highest value in the relevant
measurement range for your model. If you enter a value
that exceeds this highest value, the Err error message is
displayed and the value is not saved.
NOTES:
For flow measurement, enter the precise distance from the sensor to the
bottom of the flume.
The To
first enter
digit canthe
be modified
to read
and 1 forheight)
metric units or

Distance
tobetween
empty0 (tank
between 0 and 5 for feet units.
value:
For
Shift Blocking Distance
refer to Chapter
3.
Press/Action
Display
Explanation

Required menu selection.

Indicates the
measurement unit, either
meters or feet
(according to the
MonoScan version).

For example
Displays last saved tank
height or default value
(maximum value in
range).
Setting Up and Calibrating MonoScan
Press/Action

or
Display
33
Explanation
Used to enter a new
value, as described on
page 320.
or

To save the new value,
OR

press
when standing
on the far-right digit.
After YES is displayed,
the display returns to the
functions menu.
To return to the main
menu without saving,
press
when standing
on the far-left digit.
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MonoScan User's Manual
Defining Interfering Signals
The Pr03 function enables you to locate and store up to
six interfering signals (false echoes) in the MonoScan
memory, to avoid having obstructions such as a tank
agitator or sidewall interfere with the measurement of the
contents. Defining interfering signals is done while the tank
is empty.
Echo amplitude
Memory stored
interferences
(up to 4)
Real echo
Distance
Figure 13: Scan Distance Process
Each reading (scan distance) taken using the
function is stored as an interfering signal, until
is achieved that indicates the real echo. If six
signals are already stored, the following values
saved.
Pr03
a reading
interfering
will not be
Setting Up and Calibrating MonoScan
35
NOTES:
The reading of the actual target height may not be exact, for example, a
target height of 6 m may give a reading in the range 5.98 - 6.02.
The displayed values are in distance units.
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MonoScan User's Manual

To define interfering signals:
Press/Action
Display
Explanation

Required menu selection.

Select Search to locate
acoustic interferences, or
Clear to delete stored
interferences.
or

Displayed after the
selection for 3 seconds
and then the menu returns
to Pr.03.

Temporary display while
MonoScan searches for
interfering signals.


After a brief
pause
For example,
Depth to interfering signal.
Saves the interfering
signal, then searches again
and displays the next
reading. Continue to press
this button to save up to
six interference readings.
Setting Up and Calibrating MonoScan
Press/Action


37
Display
Explanation
For example,
Actual target height reading
indicates that there are no
more interfering signals.
Saves the entered values.
NOTES:
If the value represents an interference or false echo or false target press NEXT. If the value represents the real target, real distance –
press ENT.
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MonoScan User's Manual
Configuring 4mA Current Output
Pr04 function enables you to enter values to be used as
the 4mA mark for remote monitoring. You can define the
4mA values for Level, Distance or Flow measurements.
The measurement values types should be defined in Pr.04
(described on page 386). These definitions will be
applicable as well for the 20mA values defined in Pr.05.
Distance and level measurements can be defined for both
Solid and Liquid MonoScan models. For MonoScan Flow
models, distance, level and flow measurements can be
defined.
To set 4mA and 20mA for level measurements you should
configure Pr04 and Pr05 for level values.
For example, if we measure a tank with tank height
configured for 5 meters, the 4mA values will represent
zero tank level and 20mA values will represent full tank
level. Therefore, the value entered in Pr04 will be
0.000m and the value entered in Pr05 will be 5.000m.
When setting 4mA and 20mA for distance measurements,
4mA values will represent the minimal distance between
the surface of the target and the sensor and 20mA values
will represent the maximal distance between the sensor
and the surface of the target. Therefore, 4mA represents
the full part of the tank and 20mA represents the empty
part of the tank.
Setting Up and Calibrating MonoScan

39
To enter 4mA values:
Press/Action
Display

Explanation
Required menu selection.

For example,
Select 4mA (and
20mA) values format:
Level (L000), Distance
(d000) and Flow
(F000).
For example
Last saved 4mA level or
zero default value.
or



or
or
Used to enter a new
value, as described on
page 320.
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MonoScan User's Manual
Press/Action

Display
Explanation
To save the new value,
press
when standing
on the far-right digit.
After YES is displayed,
the display returns to the
functions menu.

To return to the main
menu without saving,
press
when standing
on the far-left digit.
Setting Up and Calibrating MonoScan
41
NOTES:
The values for 4mA and 20mA must be different; otherwise an Err error
message is displayed.
The values for 4mA and 20mA should not be greater than the value used
for the tank height (Pr02). Because of the dead-zone, the distance
between the sensor and the surface of the target at its highest level
should be a minimum of
0.25 m/0.8 ft for Short-Range models, or 0.6 m/1.96 ft for StandardRange models.
The first digit of the 4mA value can be modified to read between 0 and 1
for metric units or between 0 and 5 for U.S. Standard units.
After accessing the Pr04 function, the unit generates a fixed current of
22mA on the 4-20mA line. When the MonoScan reverts to regular
scanning mode, the 4-20mA line returns to regular functioning.
The default values for 4mA and 20mA in Solid and Liquid MonoScan
models are level.
The default values for 4mA and 20mA in Flow MonoScan models are
flow.
When changing from one measurement mode to another, the
measurement units will be changed automatically (for example, when
changing from level mode to flow mode, the units will change from
meters to M^3/H.)
The measurement mode selected for the 4-20mA values will not
influence the measurement mode selected for the display (Pr.08).
In case of power rest, measurement configuration (level, distance, flow)
will be saved according to the unit's last configuration.
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MonoScan User's Manual
Configuring 20mA Current Output
The Pr05 function enables you to enter values to be used
as the 20mA mark for remote monitoring.

To enter 20mA values:
Press/Action
Display

Explanation
Required menu selection.


For example

or
Last saved 20mA level or
default value (maximum
value in range).
Used to enter a new
value, as described on
page 320.
or

To save the new value,
OR
press
when standing
on the far-right digit.
After YES is displayed,
the display returns to the
functions menu.
Setting Up and Calibrating MonoScan
Press/Action

Display
43
Explanation
To return to the main
menu without saving,
press
when standing
on the far-left digit.
NOTES:
Type of measurement (level, distance, flow) selected in Pr.04 is also
applicable for Pr.05.
The values for 4mA and 20mA must be different; otherwise an Err error
message is displayed.
The values for 4mA and 20mA should not be higher than the value used
for the tank height (Pr02).
The first digit of the 20mA value can be modified to read between 0 and
1 for metric units or between 0 and 5 for U.S. Standard units.
After accessing the Pr05 function, the unit generates a fixed current of
22mA on the 4-20mA line. When the MonoScan reverts to regular
scanning mode, the 4-20mA line returns to regular functioning.
Please refer to chapter 5 Troubleshooting for 20mA error indications.
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MonoScan User's Manual
Selecting Low/High Dynamic Speed
(Open Channels and Liquid Only)
The Pr06 function enables you to choose the required
speed level. There are two settings available:
 SE 0: Low dynamic mode (default setting). This mode
provides slower readings with a greater degree of
accuracy (Rate of up to 80 cm/31in per min').
 Fail Safe: 10 minutes.
 SE 1: High dynamic mode. This mode provides faster
readings but with less precision
(Rate of up to 100 cm/39 in per min').
 Fail Safe: 3 minutes.
NOTE:
Fail – Safe timer determines the waiting period from an echo loss till a
transmission of an error signal.
Setting Up and Calibrating MonoScan

To select the speed mode:
Press/Action
Display
Explanation

Required menu selection.

Displays the current
operation mode setting.
or

Used to toggle between
the operation modes.
or

Saves the selected
operation mode.
45
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MonoScan User's Manual
Defining Working Area
The Pr07 function allows you to add distance range that
exceeds the tank's height, thus enabling accurate readings
of complicated tank shapes with conic ending. This may
be required when the vessel has a conical bottom shape
which is causing false echoes and consequently faulty
measurements. The minimal value can be the entered tank
height and the maximal value can be double the value of
the entered tank height (limited to 15m/49ft). The default
setting is the entered tank height.
Sensor
PR02
Distance to
empty level
(tank
height)
PR07
Working
area
False echoes
Figure 14: Defining Working Area
Setting Up and Calibrating MonoScan
47
NOTE:
It is recommended to use the Pr.07 function only in Distance
mode.

To define a Working Area:
Press/Action
Display
Explanation

Required menu selection.

Displayed when entering
the function.


for example:
or
or
Displays the value last
saved in the tank height
(default). The entered
value should not be more
than double the tank
height and should not
exceed the MonoScan's
maximum measuring range
(15m/49ft).
Used to enter a new
value, as described on
page 320.
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MonoScan User's Manual
Press/Action
Display
Explanation

Saves the entered value.

Used to move on to the
next function.
or
Selecting Distance or Level Display
The Pr08 function enables you to choose whether
MonoScan displays either distance or level measurements.
There are two settings available:
 d000: Distance mode (default setting): In this
mode, MonoScan displays the distance from the
sensor to the surface of the contents.
 L000: Level mode: In this mode, MonoScan
displays the level of the contents from the bottom
of the tank.
NOTE:
The measurement mode selected for the display will not influence the
measurement mode selected for the 4-20mA values (Pr.04).
Setting Up and Calibrating MonoScan

49
To select distance or level display:
Press/Action
Display
Explanation

Required menu selection.

Displays the current
distance/level mode
setting.
or

Used to toggle between
the modes.
or

Saves the selected mode.
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MonoScan User's Manual
Entering factor for Gas
Compensation
Function Pr.09 enables you to compensate for sound
velocity changes in different types of gasses. You can
enter the appropriate factor for each type of gas listed on
the ‘Gas Factor Table’ (Appendix A). For example the
sound velocity in air (in room temperature) is 343
m/sec and for Methane (Ch4) 445.82 m/sec, therefore
a factor of 445.82/343 = 1.29 should be entered to
compensate for this type of gas. This factor will
compensate in cases when the gas compound consists on
100% Methane. In case the gas is not pure, the sound
velocity cannot be estimated and therefore a minor
deviation could appear. It is recommended to use a
reference measurement indicator (using a tape or other
measuring device) and compare the measurement results
between the MonoScan and the reference measurement
indicator.
If the result is correct, press ENT. If the
accuracy deviation is higher than expected, continue and
calibrate the factor to meet the gas maintained in the
vessel. For example, if the gas composition consists of
water and gas you can add +/- 0.01 to the factor figure
already entered, to meet your application requirements.
The 'Gas Factor Table' (page 82) supports up to 33
different types of gasses.
Setting Up and Calibrating MonoScan

To enter a gas compensation factor:
Press/Action
Display
Explanation

Required menu
selection.

Default screen.

Default value.

Choose a factor from
the 'Gas Factor Table'
(Appendix A, Page
82).
or
or
For example:

This is the factor for
Ethanol.
Saves the chosen gas
factor.
NOTES:
Repeat this procedure if the measurement results differ from the
actual material level measured with a reference tape (or other
reference measurement method). Add or reduce 0.01 to
calibrate the factor figure already entered.
Updated on-screen results may take a few seconds to appear.
51
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MonoScan User's Manual
Restoring the Default Settings
The Pr10 function allows clearing all user-defined settings
and reverting to the default factory settings.
Default
Pr.00:
Pr.02:
Pr.03:
Pr.04:
factory settings are:
GPM 1U01 or M³/Hr 1E01
Sbd 00.00, E000, Tank Height =default
Resets all interfering signals
Solid/Liquid device L000, 00.00 or
Flow device F000, 00.00
Pr.05: Solid/Liquid device Tank Height = Pr.02
Pr.06:
Pr.07:
Pr.08:
Pr.09:
Flow device 55500 M³/Hr or 244400 GPM
SE 0 (Liquid & Flow)
Tank Height = Pr.02
d000
01.00
NOTE:
If you decide not to revert to the default settings, press ESC when CLCL
is displayed. A redo option is not available when ENT has been pressed.

To restore the default settings:
Press/Action


Display
Explanation
Required menu selection.
Setting Up and Calibrating MonoScan
Press/Action

Display
Explanation
Reverts all settings to
default factory settings.
53
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MonoScan User's Manual
Shifting the Blocking Distance
This function enables you to define an area in which
measurement results would be ignored. This option is
applicable for installations requiring extension pipes or
nuzzles positioned above the material level. This area
should approx, fit the pipe/nuzzle length to eliminate false
echoes and to provide accurate and stable measurement
readings.
 To shift the blocking distance:
Follow the directions given for Entering the Tank Height
Value, page 320. Instead of entering the tank height
value, enter 00.01, and continue as follows:
Press/Action
Display
Explanation

Insert this code to enter
the Blocking Distance area.

This message will flash for
a few seconds, indicating
an entry to the Blocking
Distance area.

or
or
For example, Shifts the blocking distance
to 0.75m (2.46 ft).
Setting Up and Calibrating MonoScan
Press/Action

Display
Explanation
Saves this entry and
returns to Pr.02.
55
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MonoScan User's Manual
NOTES:
Shifting of the Blocking Distance is limited to 1.5m/4.9ft. The value entered to
the SBD incorporates the Dead Zone Value.
Pr.10 (Clear) reverts the blocking distance to its default.
Echo received from the defined Blocking Distance area will be ignored by the
MonoScan and the measurement result will be based on the next echo.
When installing via extension pipe, it is recommended to keep approx. 10cm
(4") gap between the shortest distance to target (maximal level) and the lower
pipe edge. Set the SBD length to a value that equals to the distance from the
sensor's lower edge to pipe's lower edge plus 5 cm (2"), in order to avoid
second harmony interference.
Verifying the Version Number
In addition to the functions described, you can verify the
MonoScan version number.

To verify the MonoScan version number:
Follow the directions given for Entering the Tank Height
Value, page 320. Instead of entering the tank height
value, enter 00.17, and continue as follows:
Press/Action


After a brief
pause
Display
Explanation
Setting Up and Calibrating MonoScan
Press/Action
Display

57
Explanation
Displays the version
number.
Defining 22mA Signal Error Messages
MonoScan allows you to define if the following signal error
indications: Near Zone and Lost Echo, will be active when
the current output reaches 22mA. The MonoScan default
setting enables 22mA analog current and error messages
to appear on its LCD display.
Near Zone - whenever the distance is below the defined
Dead Zone (depending on the MonoScan model you are
using)
message will be displayed on the LCD.
Lost Echo - whenever the echo is lost, or in cases when
the measurement results exceed the tank height or when a
returned echo is not received
displayed on the MonoScan's LCD.
message will be
You can choose to enable or disable these error
messages and 22mA analog signal as follows:
 d000: Disable
 E000: Enable (default setting)
Refer to Chapter 5, Troubleshooting for a detailed list of
the 22mA signal error messages.
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MonoScan User's Manual
Setting Up and Calibrating MonoScan

59
To disable/enable 22mA signal error in the
MonoScan:
Follow the directions given for Entering the Tank Height
Value, page 320. Instead of entering the tank height
value, enter 00.16, and continue as follows:
Press/Action
Display
Explanation

Choose disable

Used to toggle between
the modes.
or


Disables the 22mA error
messages
NOTE:
When the error signals are disabled the following current outputs will be
displayed:
If the MonoScan is set to Level or Flow then F.F.F.F will indicate 20mA and
E.E.E.E will indicate 4mA.
If the MonoScan is set to Distance then F.F.F.F will indicate 4mA and E.E.E.E
will indicate 20mA.
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MonoScan User's Manual
Chapter 4
MonoScan Open
Channels
This section describes how to set flow measurement
parameters for open channels, and explains the flume/weir
codes methodology used when setting up flow
measurements.
Selecting the Flow Measurement
Settings
The Pr00 function enables you to select one of the preset
flumes/weirs settings for flow measurements. This function
is available only in MonoScan O models.
When setting flow measurement parameters in the Pr00
function, the flume/weir type value (X) is entered first,
followed by the letter (U) or (E) that represents either
American (USA) or European standard flume/weir. The
code value (YY) represents the appropriate flume/weir
dimensions in the following format:
. The open
channel types and codes are described in Open Channels
Flow Measurements, page 57.
NOTES:
Refer to Chapter 3, Setting Up and Calibrating MonoScan, for an
explanation of accessing and using the MonoScan functions menu.
All flow measurement values are displayed divided by 1000.
MonoScan Open Channels

61
To select the flow measurement settings:
Press/Action
Display

Explanation
Required menu selection.

For
example:
Indicates the measurement unit
for flow, either GPM (in
American standard) or M3 (in
European standard) (according
to the MonoScan version).

Displays last saved flow
measurement setting or default
value, with first digit flashing (U
– American standard and E –
European standard).

Use to select a new type value
(X).
or

Last two digits of the display
flash.

Use to select a new flume/weir
length code (YY).
or

Selected values are saved.
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MonoScan User's Manual
Open Channels Flow Measurements
The flume/weir type code methodology used when setting
up open channels is based on three digits: X(U/E)YY
Where:
X
refers to the particular flume/weir type
U/E refers to either American or European standard
flumes/weirs
YY
refers to the specific flume/weir dimensions
The types of flumes/weirs are available in European
standard and American standard. Default setting is
European standard. When working in European standard
the default flow measurement units will be M³/Hr, and in
American standard the default flow measurement units will
be G.P.M .
MonoScan Open Channels
63
Flume/Weir Types
This is the first value (X) entered for the Pr00 function.
The following flume/weir types are available both in
European and American standard:
Type
(X)
European Standard
Pages 59 - 68
American Standard
Pages 69 - 76
1
Rectangular Suppressed
Sharp-Crested Weir, Page 59
Rectangular Suppressed
Sharp-Crested Weir, Page 69
2
Rectangular Contracted SharpCrested Weir, Page 60
Rectangular Contracted SharpCrested Weir, Page 70
3
Trapezoidal (Cipolletti) Sharp- Trapezoidal (Cipolletti) SharpCrested Weir, Page 66
Crested Weir, Page 71
4
V-notch (Triangular) SharpCrested Weir, Page 62
V-notch (Triangular) SharpCrested Weir, Page 72
5
Khafagi-Venturi Flume, Page
63
Parshall Flume, Page 73
6
Parshall Flume, Page 64
Palmer Bowlus Flume
Trapezoidal Throat CrossSelection, Page 74
7
Palmer Bowlus Flume
Trapezoidal Throat CrossSelection, Page 65
H Flume, Page 75
8
H Flume, Page 66
Leopold-Lagco Flume,
Page 76
9
Neyrpic Venturi Flume/LongBase Weir, Page 67, 68
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MonoScan User's Manual
Flumes/Weirs - European Standard
Rectangular Suppressed Sharp-Crested
Weir (Type 1)
Code (YY)
Crest Length (cm)
01
20
02
40
03
60
04
80
05
100
06
150
07
200
08
300
MonoScan Open Channels
65
Figure 14: Rectangular Suppressed Sharp-Crested Weir
Rectangular Contracted Sharp-Crested Weir
(Type 2)
Code (YY)
Crest Length (cm)
01
20
02
30
03
40
04
50
05
60
06
80
07
100
08
150
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MonoScan User's Manual
09
200
10
300
Figure 15: Rectangular Contracted Sharp-Crested Weir
Trapezoidal (Cipolletti) Sharp-Crested
Weir (Type 3)
Code (YY)
Crest Length (cm)
01
30
02
45
03
60
04
80
05
100
MonoScan Open Channels
06
150
07
200
08
300
Figure 16: Trapezoidal (Cipolletti) Sharp-Crested Weir
67
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MonoScan User's Manual
V-Notch (Triangular) Sharp-Crested Weir
(Type 4)
Code (YY)
V-Notch Angle (o)
01
90
02
60
03
53.8
04
45
05
30
06
28.4
07
22.5
British Standard
08
90
09
45
10
22.5
MonoScan Open Channels
Figure 17: V-Notch (Triangular) Sharp-Crested Weir
Khafagi-Venturi Flume (Type 5)
Code (YY)
Flume Type
b0 (cm)
01
QV 302
12
02
QV 303
30
03
QV 304
40
04
QV 305
50
05
QV 306
60
06
QV 308
80
07
QV 310
100
08
QV 313
130
09
QV 316
160
69
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MonoScan User's Manual
Figure 18: Khafagi-Venturi Flume
Parshall Flume (Type 6)
Code
(YY)
Throat
Width (in)
Code
(YY)
Throat
Width (in)
01
1
11
60
02
2
12
72
03
3
13
96
04
6
14
120
05
9
15
144
06
12
07
18
MonoScan Open Channels
08
24
09
36
10
48
Figure 9: Parshall Flume
Palmer Bowlus Flume Trapezoidal
Throat Cross-Selection (Type 7)
Code (YY)
Conduit Diameter
(in) D
01
6
02
8
03
10
71
72
MonoScan User's Manual
04
12
05
15
06
18
07
21
08
24
09
27
10
30
Figure 10: Palmer Bowlus Flume Trapezoidal Throat Cross-Selection
H Flume (Type 8)
Code (YY)
01
Flume Size
(ft)
0.5
Measurement
Point (cm)
5
MonoScan Open Channels
02
0.75
7
03
1
9
04
1.5
14
05
2
18
06
2.5
23
07
3
28
08
4.5
41
Figure 22: H Flume
73
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MonoScan User's Manual
Neyrpic Venturi Flume/Long-Base Weir (Type
9)
Neyrpic Venturi Flume
Code (YY)
Venturi Flume
Type
01
1253AX
02
1253AY
03
1253AZ
04
1253A
05
1253B
06
1253C
07
1253D
08
1253E
09
1253F
Figure 23: Neyrpic Venturi Flume
MonoScan Open Channels
Long-Base Weir
Code
(YY)
Long-Base
Weir Type
10
1245A
11
1245B
12
1245C
13
1245D
Figure 11: Long-Base Weir
75
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MonoScan User's Manual
Flumes/Weirs – American Standard
Rectangular Suppressed Sharp-Crested Weir
(Type 1)
Code (YY)
Crest Length (in)
01
12.00
02
18.00
03
24.00
04
30.00
05
36.00
06
48.00
07
60.00
08
72.00
09
96.00
MonoScan Open Channels
Figure 25: Rectangular Suppressed Sharp-Crested Weir
Rectangular Contracted Sharp-Crested Weir
(Type 2)
Code (YY)
Crest Length (in)
01
12.00
02
18.00
03
24.00
04
30.00
05
36.00
06
48.00
07
60.00
08
72.00
77
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MonoScan User's Manual
09
96.00
Figure 26: Rectangular Contracted Sharp-Crested Weir
Trapezoidal (Cipolletti) Sharp-Crested Weir
(Type 3)
Code (YY)
Crest Length (in)
01
12.00
02
18.00
03
24.00
04
30.00
05
36.00
06
48.00
MonoScan Open Channels
07
60.00
08
72.00
09
96.00
Figure 27: Trapezoidal (Cipolletti) Sharp-Crested Weir
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MonoScan User's Manual
V-Notch (Triangular) Sharp-Crested Weir
(Type 4)
Code (YY)
V-Notch Angle (o)
01
90
02
60
03
45
04
30
05
22.5
Figure 28: V-Notch (Triangular) Sharp-Crested Weir
MonoScan Open Channels
Parshall Flume (Type 5)
Code
(YY)
Throat
Width (in)
Code
(YY)
Throat
Width (in)
01
1
12
60
02
2
13
72
03
3
14
96
04
6
15
120
05
9
16
144
06
12
07
18
08
24
09
30
10
36
11
48
81
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MonoScan User's Manual
Figure 29: Parshall Flume
Palmer Bowlus Flume Trapezoidal Throat
Cross-Selection (Type 6)
Code (YY)
Conduit
Diameter (in) D
Code (YY)
Conduit
Diameter (in) D
01
4
11
30
02
6
12
36
03
8
13
42
04
10
14
48
05
12
15
60
06
15
16
72
07
18
08
21
09
24
10
27
MonoScan Open Channels
Figure 30: Palmer Bowlus Flume Trapezoidal Throat Cross-Selection
H Flume (Type 7)
Code
(YY)
Flume Size
(in)
Measurement
Point (in)
01
6
1.96
02
9
2.75
03
12
3.54
04
18
5.51
05
24
7.08
06
30
9.05
07
36
11.02
08
54
16.14
83
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MonoScan User's Manual
Figure 31: H Flume
MonoScan Open Channels
Leopold-Lagco Flume (Type 8)
Code (YY)
Crest Length
(in)
Code (YY)
Crest Length
(in)
01
4
11
36
02
6
12
42
03
8
13
48
04
10
14
54
05
12
15
60
06
15
16
66
07
18
17
72
08
21
09
24

10
30

85
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MonoScan User's Manual
Figure 32: Leopold Lagco Flume
Chapter 5
Troubleshooting
MonoScan
This chapter describes how to resolve problems that may
occur when calibrating MonoScan, as follows:
Troubleshooting MonoScan
Error
Description
1. Noise in area.
(indicated by 22mA if the
Error Signals are Enabled).
2. Inappropriate power
supply/ no grounding.
87
Solution
1. Get away from noise
source.
2. Check that the power
supply is appropriate/
check grounding
connection.
Faulty power supply.
Make sure that the power
supply corresponds with
the specifications described
in Chapter 2, Installing
MonoScan. If the problem
persists, replace the power
supply.
Sensor disconnected.
Contact the distributor for
further instructions.
Any combination of three
8s and one 1: Indicates an
electrical shortage caused
by depressing the buttons
for too long.
Contact the manufacturer
for further instructions.
88
MonoScan User's Manual
Error
Description
Solution
Appears for several seconds
after restarting the unit. If
it is displayed for more
than several seconds, it
may be due to one of the
following:
Make sure that the power
supply corresponds with the
specifications described in
 Power supply voltage is
too low
Chapter 2, Installing
MonoScan. If the problem
persists, replace the power
supply.
 Load resistor resistance
is too high or
unnecessary
 A random pulse that
causes the unit to
automatically restart
Measurement value is
greater than 9999.
Double check the unit
configuration (Tank h,
type of flume, 4-20mA
settings.)
In Flow mode, appears
when the entered tank
height is incorrect.
Decrease the Tank Height
value.
Troubleshooting MonoScan
89
22mA Signal Error Messages
The following list of messages will appear on the display
and coincides with a 22mA analog current error output
signal (when the error signals messages are enables):
Error
Description
Solution
Sensor disconnected.
Contact the distributor
for further instructions.
Near dead zone.
(depends on the
measurement
definitions)
Move the sensor
farther from the dead
zone area.
Tank empty.
(depends on the
measurement
definitions)
Check the level of
material in the tank.
1. Noise in area.
(indicated by 22mA
if the Error Signals
are Enabled).
1. Get away from
noise source.
2. Inappropriate
power supply/ no
grounding.
Faulty power supply.
(indicated by 22mA
if the Error Signals
2. Check that the
power supply is
appropriate/ check
grounding connection.
Make sure that the
power supply
corresponds with the
90
MonoScan User's Manual
are Enabled).
specifications described
in Chapter 2, Installing
MonoScan. If the
problem persists,
replace the power
supply.
Gas Factor
91
Appendix A
Gas Factor
The following table contains 33 different types of gasses
and their factor for compensating the sound velocity:
Gas
Symbol
Factor
Acetic Acid
C2h4o2
0.62
Acetone
C3h6o
0.63
Acetaldehyde
C2h4o
0.74
Acetyl Chloride
C2h3c1o
0.54
Acetylene
C2h2
0.99
Ammonia
H3n
1.26
Argon
Ar
0.92
Benzene
C6H6
0.53
Bromine
Br2
0.41
Bromochlorodifluoromrthane
Cbrclf2
0.37
Butanone
CH3COCH2CH3
0.56
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MonoScan User's Manual
Gas
Symbol
Factor
Carbon Dioxide
CO2
0.77
Carbon Monoxide
CO
1.01
Carbon Tetrachloride
CCI4
0.38
Chlorine
Cl2
0.68
Dimethyl Ether
C2h6o
0.71
Ethane
C2h6
0.90
Ethanol
C2h6o
0.71
Ethylene
C2h4
0.95
Helium
He
2.93
Hydrogen
H2
3.79
Hydrogen Sulfide
H2S
0.89
Isopropyl Alcohol
C3h8o
0.62
Methane
CH4
1.29
Methyl Hydrazine
Ch6n2
0.71
Neon
Ne
1.30
Nitrogen
N2
1.01
Gas Factor
Gas
Symbol
Factor
Nitromethane
CH3NO2
0.63
Oxygen
O2
1.02
Propane
C3H8
0.72
Propanol
C3H8O
0.61
Tetrahydrofuran
C4H8O
0.57
93
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MonoScan User's Manual
Appendix B
Installation Tips
1) Choosing location
Distance to tank
walls
MUST BE
At least 50cm from walls +
10cm/1m range
Surface
MUST BE
Fixed on horizontal surface
Acoustic noises
MUST BE
Far away from acoustic
noises and vibrations
Electrical
interferences
MUST BE
Shielded away from power
and sensor cables
Tank installation
MUST BE
Far away from tank inlets,
outlets and physical obstacles
Sensor
MUST BE
Exactly perpendicular to the
surface of the target
2) Handling Dead Zone
Extension pipe(1)
MUST BE
Of at least 3” internal
diameter and 50cm long from
Installation Tips
95
sensor low edge to pipe low
edge)
Extension pipe(2)
MUST BE
With complete smooth interior
surface
Extension pipe(3)
MUST BE
Installed with a flange and
not protruding into the tank
3) Power Source
Voltage
MUST BE
At least 12VDC on unit
terminals
Battery
MUST BE
Rated higher than 12VDC
due to normal voltage drop
Ripple and noise
MUST BE
Not exceeding 100mC
Type
MUST BE
Preferably regulated switching
PS (avoid rectified PS)
Rechargeable supply
MUST BE
Non operational when
switched to recharge
4) 2-wire Interface
PLC Connection
MUST BE
As specified in the user
manual, preferably grounded
Barrier
MUST BE
Connected in EX zones and
grounded
96
MonoScan User's Manual
5) Configuration
Tank height, level
and distance
MUST BE
Configured correctly
4-20 settings
MUST BE
Define (consider pipe
extension)
5cm margin
MUST BE
Kept between pipe low edge
and full level
Scan distance (1)
MUST BE
Preferably be executed in all
applications
Scan distance (2)
MUST BE
Executed when the tank is
empty
Scan distance (3)
MUST BE
Performed after the old stored
data is cleared
SBD (1)
MUST BE
Set up in flange and
extension pipe installations
SBD (2)
MUST BE
At least 5cm before pipe
edge
Nomenclature
97
Appendix C
Nomenclature
98
MonoScan User's Manual
Appendix D
Index
Electrical specifications, 4
2
Entering factor for gas compensation, 46
20 mA mark, 38
F
4
False echoes, 31
Flow measurement settings, 53
4 mA mark, 34
Flume/weir types, 56
B
Flumes
H, 64, 73
Buttons
Khafagi-Venturi, 61
function, 26
Neyrpic Venturi, 65
D
Palmer Bowlus Trapezoidal Throat
Cross-Selection, 63, 72
Default settings
Parshall, 62, 71
restoring, 48
Function buttons, 26
Defining working area, 42
Functions
Defining 22mA signal error messages, 51
Dimensions, 2
accessing, 27
menu, 24
Distance measurement display, 44
G
Dynamic
low/high speed, 40
Gas factor table, 78
E
H
Index
H Flume, 64, 73
dimensions, 2
High dynamic setting, 40
measuring ranges, 3
99
models, 1
I
resetting, 28
setting up, 23
Installing
specifications, 3
MonoScan, 7
threaded-flange mounting, 8
N
thread-free flange mounting, 8
via extension pipes, 10
Neyrpic Venturi Flume/Long-Base Weir,
Interfering signals, 31
65
Intrinsically safe
Non-intrinsically safe
ground connections, 17
ground connections, 14
power supply, 21
power supply, 15
K
Khafagi-Venturi Flume, 61
O
Open channels
flow measurements, 55
L
Level measurement display, 44
flume/weir code methodology, 55
flume/weir types, 56
Load resistance recommendations, 15, 21
P
Long-Base Weir, 66
Low dynamic setting, 40
Palmer Bowlus Flume Trapezoidal Throat
Cross-Selection, 63, 72
M
Measurement
Parshall Flume, 69, 71
Power supply
distance display, 44
recommendations, 15, 21
level display, 44
ripple/noise parameters, 15
Measuring
Precautions, 6
ranges, 3
R
Mechanical specifications, 4
MonoScan
Rectangular
100
MonoScan User's Manual
Contracted Sharp-Crested Weir, 58
Supressed Sharp-Crested Weir, 57,67
Remote monitoring
Trapezoidal (Cipolletti) Sharp-Crested
Weir, 59, 69
Troubleshooting, 75
20 mA, 38
4 mA, 34
Resetting MonoScan, 28
V
Restoring default settings, 8
Version number
Ripple/noise parameters, 15
displaying, 50
S
V-Notch (Triangular) Sharp-Crested Weir,
60, 70
Sensors
Setting up, 23
W
Settings
Weirs
restoring default, 48
Long-Base, 66
Sharp-Crested Weir
Rectangular Contracted, 58, 68
Rectangular Suppressed, 57, 67
Trapezoidal (Cipolletti), 59, 69
V-Notch (Triangular), 60,70
58,68
Rectangular Supressed Sharp-Crested,
57,67
Trapezoidal (Cipolletti) Sharp-Crested,
Signals
59,69
interfering, 31
V-Notch (Triangular) Sharp-Crested,
Signal error messages, 51
60,70
Specifications, 3
electrical, 4
Working Area, 42
mechanical, 4
Speed mode, 40
T
Table for gas compensaion factor, 78
Tank height value, 29
Rectangular Contracted Sharp-Crested,
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