Pulsar Measurement Ultra Twin User guide

Ultra Twin

Instruction Manual

2

PULSAR MEASUREMENT

3

ULTRA TWIN (FIFTH EDITION REV 1)

May 2021
Part Number M-192-0-005-1P

COPYRIGHT

© Pulsar Measurement, 2005 -21. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form without the written permission of Pulsar Process Measurement Limited.

WARRANTY AND LIABILITY

Pulsar Measurement guarantee for a period of 2 years from the date of delivery that it will
either exchange or repair any part of this product returned to Pulsar Process Measurement
Limited if it is found to be defective in material or workmanship, subject to the defect not being
due to unfair wear and tear, misuse, modification or alteration, accident, misapplication or
negligence.

DISCLAIMER

Pulsar Measurement neither gives nor implies any process guarantee for this product and shall
have no liability in respect of any loss, injury or damage whatsoever arising out of the
application or use of any product or circuit described herein.

Every effort has been made to ensure accuracy of this documentation, but Pulsar Measurement
cannot be held liable for any errors.

Pulsar Measurement operates a policy of constant development and improvement and reserves
the right to amend technical details, as necessary.

The Ultra Twin shown on the cover of this manual is used for illustrative purposes only and may
not be representative of the actual Ultra Twin supplied.

CONTACT
For technical support, please contact:
Europe: [e-mail]

Outside Europe: [e-mail]
If you have any comments or suggestions about this product, please contact:
Europe: [e-mail]

Outside Europe: [e-mail]
Pulsar Measurement website: www.pulsarmeasurement.com

United States

11451 Belcher Road South
Largo,
FL 33773
888-473-9546

Canada

16456 Sixsmith Drive
Long Sault, Ont.
K0C 1P0
855-300-9151

United Kingdom

Cardinal Building, Enigma
Commercial Centre

Sandy’s Road, Malvern

WR14 1JJ
00 44 (0)1684 891371

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CONTENTS

Chapter 1: Start Here… ........................................................................................................ 10

About this Manual ............................................................................................................ 10

About the Ultra Twin ....................................................................................................... 11

Functional Description .................................................................................................... 11

Product Specification ....................................................................................................... 13

EU Certificate of Conformity ......................................................................................... 15

Chapter 2 Ultra Twin Installation ..................................................................................... 16

Unpacking ............................................................................................................................ 16

Power Supply Requirements......................................................................................... 16

Location ................................................................................................................................ 17

Dimensions .......................................................................................................................... 18

Terminal connection details .......................................................................................... 22

Power ..................................................................................................................................... 23

Transducer ........................................................................................................................... 23

ATEX ....................................................................................................................................... 23

FM ........................................................................................................................................... 24

Voltage selector and fuse location............................................................................. 26

Preparation for Operation ............................................................................................. 27

Maintenance ....................................................................................................................... 28

Chapter 3 How To Use Your Ultra Twin ........................................................................ 29

Operating the Controls ................................................................................................... 29

Run Mode ............................................................................................................................. 31

Program Mode ................................................................................................................... 31

Points of Measurement (P1 and P2) .......................................................................... 31

How to Access Program Mode .................................................................................... 32

Hot Keys ................................................................................................................................ 33

Menu Keys ........................................................................................................................... 34

Numeric Keys ...................................................................................................................... 34

Using the Menu System ................................................................................................. 35

Directly Editing Parameters ........................................................................................... 36

Test Mode ............................................................................................................................ 37

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Using the Serial Interface ............................................................................................... 38

Parameter Defaults ........................................................................................................... 40

Chapter 4 Quick Setup Guide ........................................................................................... 41

Enter Program Mode ....................................................................................................... 41

Choose Quick Setup ......................................................................................................... 41

Level or Volume ................................................................................................................. 42

Example 1 Level Monitoring with Alarms ................................................................ 48

Example 2 Level Monitoring and Control (up or down) .................................... 50

Example 3 Volume Application .................................................................................... 53

Example 4 Differential Control ..................................................................................... 56

Pump ...................................................................................................................................... 60

Quick Setup ......................................................................................................................... 61

Example 2 Sump Control (pump down) ................................................................... 66

Example 3 Reservoir Control (pump Up) ................................................................. 68

Flow ........................................................................................................................................ 70

Exponential Devices ......................................................................................................... 77

Calculations ......................................................................................................................... 80

BS3680 Flumes (P700 = 2) ............................................................................................. 84

Rectangular Flume Calculations .................................................................................. 85

U-Throated Flume Calculations ................................................................................... 86

Example 2 BS3680 U-Throated Flume ...................................................................... 87

BS3680 Weirs (P700 = 3) ................................................................................................ 89

Rectangular Weir Calculations ..................................................................................... 89

V-Notch Weir Calculations ............................................................................................ 90

BS3680 Rectangular Broad Crested Weir ................................................................ 93

Rectangular Broad Crested Weir Calculations ....................................................... 93

Special Devices ................................................................................................................... 95

Palmer Bowlus and H-Flume Calculations .............................................................. 96

V-Notch Angle Weir (Non-BS 3680) Calculations ................................................ 96

Universal Calculations (P700=6) .................................................................................. 97

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Chapter 5 Parameter Guide ............................................................................................... 98

Menu System ...................................................................................................................... 98

Top Level Menu ................................................................................................................. 98

Application Menu .............................................................................................................. 99

Relays Menu ...................................................................................................................... 100

Pump “Advanced” Menu .............................................................................................. 101

Digital Inputs Menu........................................................................................................ 102

Data Logs Menu .............................................................................................................. 103

Volume (When P100 = 6)............................................................................................. 104

OCM Menu (When P100 = 4 or 5) ........................................................................... 105

Display Menu .................................................................................................................... 106

mA Output 1 Menu ........................................................................................................ 107

mA Output 2 Menu ........................................................................................................ 107

Compensation Menu ..................................................................................................... 108

Stability Menu .................................................................................................................. 108

Echo Processing Menu .................................................................................................. 109

System Menu .................................................................................................................... 110

Device Comm Menu ...................................................................................................... 111

Test Menu .......................................................................................................................... 112

Application Parameters................................................................................................. 113

Operation ........................................................................................................................... 113

Operation ........................................................................................................................... 113

Dimensions ........................................................................................................................ 115

Relay Parameters ............................................................................................................. 117

Alarms .................................................................................................................................. 119

Pumps .................................................................................................................................. 126

Control ................................................................................................................................. 130

Miscellaneous ................................................................................................................... 134

Common Relay parameters......................................................................................... 136

Pump “Advanced” Parameters ................................................................................... 137

Pump Run On ................................................................................................................... 137

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Starting ................................................................................................................................ 137

Stopping ............................................................................................................................. 138

Pump Exercising .............................................................................................................. 138

Wall Cling ........................................................................................................................... 139

Digital Inputs ..................................................................................................................... 140

Digital Input Parameters .............................................................................................. 146

Digital Inputs ..................................................................................................................... 148

Digital Input ....................................................................................................................... 150

Data Log parameters ..................................................................................................... 151

Totaliser Audits ................................................................................................................ 151

Temperature ...................................................................................................................... 151

Pump Logs ......................................................................................................................... 152

Volume ................................................................................................................................ 153

Conversion ......................................................................................................................... 154

Breakpoints ........................................................................................................................ 159

Tables ................................................................................................................................... 160

OCM ..................................................................................................................................... 161

PMD Setup ......................................................................................................................... 161

Dimensions ........................................................................................................................ 164

Calculations ....................................................................................................................... 168

Breakpoints ........................................................................................................................ 168

Tables ................................................................................................................................... 169

Average Flow .................................................................................................................... 169

Display Parameters ......................................................................................................... 170

Options ................................................................................................................................ 170

Failsafe ................................................................................................................................. 172

Auxiliary ............................................................................................................................... 173

Totaliser ............................................................................................................................... 176

Bargraph ............................................................................................................................. 178

mA Output 1 Parameters ............................................................................................. 179

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Range ................................................................................................................................... 179

Operation ........................................................................................................................... 180

Setpoint ............................................................................................................................... 180

mA1 Limits ......................................................................................................................... 181

mA1 Trim ............................................................................................................................ 181

mA1 Failsafe ...................................................................................................................... 182

mA1 Allocation ................................................................................................................. 182

mA Output2 Parameters .............................................................................................. 183

Range ................................................................................................................................... 183

Operation ........................................................................................................................... 184

Setpoint ............................................................................................................................... 184

mA2 Limits ......................................................................................................................... 185

mA2 Trim ............................................................................................................................ 185

mA2 Failsafe ...................................................................................................................... 186

mA2 Allocation ................................................................................................................. 186

Compensation Parameters .......................................................................................... 188

Offset.................................................................................................................................... 188

Temperature ...................................................................................................................... 188

Velocity ................................................................................................................................ 189

Stability Parameters ....................................................................................................... 190

Damping ............................................................................................................................. 190

Indicator .............................................................................................................................. 190

Rate ....................................................................................................................................... 190

Filters .................................................................................................................................... 191

Echo Processing Parameters ....................................................................................... 192

Transducer 1 Status ........................................................................................................ 192

Transducer 2 Status ........................................................................................................ 193

DATEM Parameters......................................................................................................... 194

System Parameters ......................................................................................................... 195

Backup ................................................................................................................................. 195

System Information ........................................................................................................ 196

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Date & Time ...................................................................................................................... 197

LED Colour ......................................................................................................................... 197

Watchdog ........................................................................................................................... 198

Daylight Saving Time ..................................................................................................... 199

Device Comm. .................................................................................................................. 203

RS232 Set Up .................................................................................................................... 203

RS 485 Set Up ................................................................................................................... 203

Remote Alarm ................................................................................................................... 204

Test Parameters ............................................................................................................... 206

Simulation .......................................................................................................................... 206

Hardware ............................................................................................................................ 207

Chapter 6 Troubleshooting .............................................................................................. 209

Chapter 7 Disposal .............................................................................................................. 210

Notes ........................................................................................................................................ 211

ULTRA TWIN INSTRUCTION MANUAL

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CHAPTER 1: START HERE…

Congratulations on your purchase of a Pulsar Ultra Twin. This quality system
has been developed over many years and represents the latest in high
technology ultrasonic level measurement and control.

It has been designed to give you years of trouble-free performance, and a
few minutes spent reading this operating manual will ensure that your
installation is as simple as possible.

About this Manual

It is important that this manual is referred to for correct installation and
operation. There are various parts of the manual that offer additional help

or information as shown.

Tips

TIP : Look f or th i s icon through out yo u r Puls a r Mea s u rement manual to
fin d help f u l inf o r matio n and a n swers to freq uently a sked q uestio n s .

Additional Information

References

See Also

References to other parts of the manual.

Additional Information

At various parts of the manual, you will find sections
like this that explain specific things in more detail.

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About the Ultra Twin

Ultra Twin has two independent points of measurement, the wall mount
model provides a dedicated display to each point of measurement, whilst
the fascia model, whilst in RUN, will show detail of one point of
measurement in the main display line, with the second point being displayed
on the auxiliary display line. In both models, the display will provide
information relevant to the point of measurement selected whilst in RUN
and PROGRAM mode

Ultra Twin combines premium specification with high performance in a most
versatile system which is quickly configurable offering a choice of
applications in any combination, between the two points of measurement of
three specific applications i.e., level or volume measurement, pump control
or flow measurement.

Functional Description

Ultra Twin sends a transmit pulse to the transducer(s), which emits an
ultrasonic pulse perpendicular to the transducer face, and the returned echo
is sent back to the Ultra Twin. The time taken to receive the echo is
measured and the distance from the transducer face to the surface being
monitored is calculated.

Ultra Twin can measure from zero to 40m from the transducer to the surface
being monitored, dependent on the application chosen and transducer
used.

Six user-definable relays can be programmed to activate alarms, pump
starters, or other control equipment, and can be allocated to either point of
measurement. Also provided are four user definable digital inputs on the
wall mount model and seven on the fascia mount model, which can be
allocated to either point of measurement.

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There is an isolated 4-20 mA output for each point of measurement that can
be connected to a recorder or PLC, to monitor level space, distance,
volume, OCM head or flow (dependant on the application chosen),
independently from that shown on the display. There is an RS232 port, so
that the Ultra Twin can be operated remotely by a PC or other equipment.

Ultra Twin can be programmed either by the built-in keypad (standard), or
by PC via the RS 232 Serial Interface (optional).

All parameters are stored in non-volatile memory, so are retained in the
event of power interruption. A second backup copy of all parameters can
also be retained in the Ultra Twin memory, in case an alternative set of
parameters needs to be stored.

The system utilises the unique DATEM software (Digital Adaptive Tracking of
Echo Movement). This is a proven digital mapping technique developed
especially for the Pulsar Ultra range, which gives the system unequalled

ability when identifying the “true target level” in the face of competing

echoes from pipes, pumps or other obstructions. Coupled with the powerful,
long-range abilities of the ‘all new’ dB transducer range, the Ultra Twin lives
up to its reputation as the most reliable ultrasonic level measurement
system available.

The Pulsar Ultra Twin ultrasonic level controller has been designed to
provide maintenance-free fit and forget performance.

The Ultra Twin can show level, space, distance, on the display. The relays
can be programmed to activate alarms, pump starters, or other control
equipment. In addition, the digital inputs can be used to modify pump and
control regimes to optimise performance. There is an isolated 4-20 mA
output that can be connected to a chart recorder or PLC, to monitor level,
space or distance, independently from that shown on the display. There is an
RS232 port, so that the Ultra Twin can be operated remotely by a PC or
other equipment.

The Ultra Twin is programmed by the built-in keypad or by PC via the RS 232
Serial Interface (optional). All the parameters are stored in non-volatile
memory, so are retained in the event of power interruption. A second
backup copy of all parameters can also be retained in the Ultra Twin, in case
a previous set of parameters needs to be restored.

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Product Specification

PHYSICAL

Wall Mount Outside dimensions

235 x 184 x 120 mm

Weight

Nominal 1 kg

Enclosure material/description

Polycarbonate, flame resistant to UL94-5V

Cable entry detail

10 cable entry knock outs, 1 x M16, 5 x M20
underside, 4 x 18mm (PG11) at rear

Fascia Outside dimensions

200 x 112 x 108 mm

Weight

Nominal 1.3kg

Enclosure material/description

Stainless steel back, Polycarbonate UL94-V0 front and
bezel

Transducer cable extensions

2-core screened

Maximum separation

1000m (500m for mmWAVE)

ENVIRONMENTAL

IP Rating (Wall)

IP65

IP Rating (Fascia)

IP64

Max. & min. temperature
(electronics)

-20 ºC to +50 ºC

Flammable atmosphere approval

Safe area: compatible with approved dB transducers
(see transducer spec' sheet)

CE Approval

See EU Declaration of Conformity

PERFORMANCE

Accuracy

0.25% of the measured range or 6 mm (whichever is
greater). mmWAVE ± 2mm.

Resolution

0.1% of the measured range or 2 mm (whichever is
greater)

Max. Range

Dependant on transducer (maximum 40m dB40)

Min. Range

Dependent upon application and transducer
(minimum zero dB Mach3)

Rate Response

Fully adjustable

ECHO PROCESSING

Description

DATEM (Digital Adaptive Tracking of Echo
Movement)

OUTPUTS

Analogue Outputs

Isolated (floating) output (to 150V) of 4-20 mA or 0-20
mA into 500 (user programmable and adjustable)

0.1% resolution

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Digital output

Full Duplex RS232

Volt free contacts, number, and
rating

6 form "C" (SPDT) rated at 5A at 240V AC

DIGITAL INPUTS

Wall Mount x 4
Fascia Mount x 7

Min. Input Voltage 4.5VDC. Max. Input Voltage
30VDC (Max Current 3mA). 24VDC Input Supply
maximum total current 24mA.

DISPLAY

Wall Mount x 2
Fascia Mount x 1

6 digits plus 12-character text, plus bar graph with
direction indicators, remote communicator identifier,
and program/run/test mode indicators.

PROGRAMMING

On-board programming

By integral keypad

PC programming

Via RS232

Programming security

Via passcode (user selectable and adjustable)

Programmed data integrity

Via non-volatile RAM, plus backup

SUPPLY

Power Supply

115V AC + 5% / -10% 50/60 Hz, 230V AC + 5% / -10%
50/60 Hz, DC 18 - 36V
10W maximum power (typically 6W)

Fuses

100mA at 230V AC (fitted as standard to wall units)
200mA at 115V AC (fitted as standard to fascia units)

Pulsar Measurement operates a policy of constant development and
improvement and reserve the right to amend technical details, as necessary.

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EU Certificate of Conformity

ULTRA TWIN INSTRUCTION MANUAL

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CHAPTER 2 ULTRA TWIN INSTALLATION

Unpacking

Power Supply Requirements

The Ultra Twin can operate from AC supply or from a DC battery. The AC is
115V +5%/-10% 50/60Hz or 230V +5%/-10% 50/60Hz, depending on the
position of the selector switch. The DC is 18-36V. In all cases the Ultra Twin
will typically consume 6W of power, with a maximum of 10W.

Important Information

All shipping cartons should be opened carefully. When using a box cutter, do not
plunge the blade deeply into the box, as it could potentially cut or scratch
equipment components. Carefully remove equipment from each carton,
checking it against the packing list before discarding any packing material. If
there is any shortage or obvious shipping damage to the equipment, report it
immediately to Pulsar Process Measurement Limited.

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Location

The Ultra Twin must be mounted in a non-hazardous (safe) area, and the
transducer fitted in the hazardous area.

When choosing a location to mount the enclosure, bear in mind the
following:

• Ensure that the Ultra Twin is installed in a “Safe”, non-hazardous

area.

• For a clear view of the LCD display, it is recommended that it is

mounted at eye level.

• The mounting surface is to be vibration free.

• The ambient temperature is between -20°C and 50°C.

• There should be no high voltage cables or inverters nearby,

Important Information

All electronic products are susceptible to electrostatic shock, so follow proper
grounding procedures during installation.

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Dimensions

Wall Mount

The dimensions of the wall fixing holes are as shown below:

The Ultra Twin should be mounted by drilling three holes suitable for size 8
screws (length to suit your application), and fixing the top screw in place.
Hang the unit on this and fix the two remaining screws by removing the
terminals access cover to access the pre-drilled holes.

30mm
(1.18")

142mm

(5.59")

198mm (7.80inches)

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The full dimensions of the Wall enclosure are as shown below:

24.5mm

24.5mm

48mm

(0.96")

(1.89")

(0.96")

212mm (8.35 inches)

235mm (9.25 inches)

153mm (6.02 inches)

184mm (7.24 inches)

120mm (4.72 inches)

27mm

28mm

28mm

28mm

30mm

(1.06")

(1.10")

(1.10")

(1.10")

(1.18")

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Cable Entry

There are 6 cable gland knockouts on the base of the wall mount Ultra Twin
(5 x M20, 1 x M16) and 4 on the rear (4 x 18mm dia (PG11)). Select which
ones you wish to take out, and remove them by using a circular cutter, such
as a tank cutter. Take care not to damage the circuit board inside whilst
undertaking this. Do not use a hammer, as this may cause damage to the
enclosure.

It is recommended that you use suitable cable glands to ensure that the
ingress rating is maintained and that they be tightened to the manufacturers
recommended settings.

Fascia Mount

The dimensions of the wall fixing holes are as shown below:

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The full dimensions of the fascia mount enclosure are as shown below:

162 mm (6.37”)

20mm

(0.78”)

72mm
(2.83”)

15mm
(0.62”)

16mm
(0.63”)

200 mm (7.87“)

112 mm

(4.41”)

ULTRA TWIN INSTRUCTION MANUAL

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Terminal connection details

Wall Mount

The terminal strip is as detailed as below. There is also a wiring diagram
inside the terminals access cover.

Fascia Mount

The terminal details are as illustrated below:

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Power

The Ultra Twin can operate from mains AC and automatically from DC or
battery backup in the event of power failure or can be operated permanently
from DC or batteries.

Transducer

The transducer should be installed, and connected, in accordance with the
installation instructions contained in the Transducer User Guide. Wire the
transducer to the Ultra Twin’s transducer terminals, as follows:

Transducer 1

TERMINAL CONNECTION DETAILS

Unit Type

Red:

Power

White:
Signal

Black:

0Volts

Green:
Screen

Wall Mount

45

46

47

47

Fascia Mount

32

31

30

30

Transducer 2

TERMINAL CONNECTION DETAILS

Unit Type

Red:

Power

White:

Signal

Black:

0Volts

Green:
Screen

Wall Mount

48

49

50

50

Fascia Mount

35

34

33

33

When using 2-core screened extension cable, the Black and Green wires of
the transducer should be connected to the screen of the extension cable,
which in turn should be connected to the appropriate 0 volts terminal of the
Ultra Twin.

ATEX

For EEx m (Zone 1) applications a transducer certified to Sira
02ATEX5104X is used, and must be supplied via a 4000A breaking fuse,

which is fitted as standard to the Ultra Twin level controller.
For EEx ia (Zone 0) a transducer certified to Sira 02ATEX2103X is used,

which must be connected to the Ultra Twin via an external Zener barrier.

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FM

For EEx m (Zone 1) applications a transducer certified to FM Class I Div 1
Group A, B, C & D, ClassII Div 1 Group E, F & G, Class III is used, and must

be supplied via a 1500A breaking fuse, which is fitted as standard to the
Ultra Twin level controller.

Restrictions do not use in the presence of these groups of Chemicals,
Aliphatic Hydrocarbons, Ketones or Esters

For EEx ia (I.S.) a transducer certified to FM Class I Div 1 Group A, B, C &
D, ClassII Div 1 Group E, F & G is used, which must be connected to the
Ultra Twin via an external Zener barrier.

See transducer label for certification details.

Relay Outputs

The five relays can be programmed for a variety of alarms, pump control, or
other process functions. The relay contacts are all rated at 5A at 240V AC. All
connections should be such that the short circuit capacity of the circuits to
which they are connected, is limited by fuses rated so that they do not
exceed the relay rating.

Current Output

This is an isolated (floating) mA output (to 150 V), of 4 - 20mA or 0 - 20mA,
and the load should not exceed 500 .

Current Input (Optional)

This feature is available as an option only. Please consult Pulsar for further
details. The current input is an isolated (floating) mA input (to 150 V), 4 ­20mA or 0 -20mA.

Important Information

When using the Ultra Twin to measure the differential level between the two
points of measurement then transducer one must be located on the upstream
side of the application.

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Temperature Input (Optional)

The external temperature sensor allows more localised compensation of the
measured distance due to changes in temperature.

There are two models, Type A and Type B as follows:

TYPE

RANGE

A

-25° to 50°C

B

-25° to 125°C

The temperature sensor should be placed close to the point of
measurement.

The Temperature sensor connections are as follows:

DESCRIPTION

TEMPERATURE

SENSOR

ULTRA TWIN

TERMINAL

Power Supply

Terminal 1

Terminal 27

Return

Terminal 2

Terminal 28

Temp Source (P1-852, P2-852), should be set to option 4 or 5 depending on
the sensor range, set 4 for type A and 5 for type B (see above), the range is
specified on the label of the sensor.

92mm

182mm

100mm

M20 ENTRY

IP67 ABS HOUSING

316 STAINLESS STEEL

6mm

ULTRA TWIN INSTRUCTION MANUAL

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RS2323 Serial Interface

If required, you can connect to the serial interface to operate your Ultra Twin
remotely.

Voltage selector and fuse location

Wall Mount

The voltage selector switch and mains fuse is located inside the terminal
compartment, to the left of the mains terminals, as illustrated below:

Fascia Mount

The voltage selector switch and mains fuse, is located under the removable
cover at the bottom of the unit, as illustrated below.

230

115

AC POWER FUSE

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DON’T FORGET

Make sure you move the voltage selector switch to the correct position for your
power supply.

Preparation for Operation

Before switching on, check the following:

✓ The Ultra Twin is mounted correctly and is in a ‘safe’ area.
✓ The power supply is correctly installed.
✓ The voltage selector switch is in the correct position.
✓ The relays are connected correctly.

Important Information

If the equipment is installed or used in a manner not specified in this
manual, then the protection provided by the equipment may be impaired.

Important Information

Before applying AC power (mains), make sure you have correctly selected
the voltage selector switch, as detailed in the preceding pages.

Please note that all Fascia units are set to 115 volts AC with a 200mA fuse
fitted, and all Wall units are supplied set to 230 volts AC for safety
reasons, and a 100mA fuse fitted as standard.

Never operate the Ultra Twin with terminal access exposed.
An external switch or circuit breaker should be installed near to the Ultra

Twin to allow the supply to be removed during installation and
maintenance. In addition, the relay contacts should also have a means of
isolating them from the Ultra Twin.

Interconnecting cables must be adequately insulated in accordance with
local regulations. Strip back 30 mm of the outer insulation of the cable.
Strip 5 mm of insulation from the end of each conductor. Twist all
exposed strands of the conductor together. Insert the stripped conductor
into the terminal block as far as it will go and tighten the terminal block
screw. Ensure that all strands are firmly clamped in the terminal block and
that there is no excess bare conductor showing, and no stray strands.

ULTRA TWIN INSTRUCTION MANUAL

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Maintenance

There are no user serviceable parts inside Ultra Twin, except the mains fuse.
If you experience any problems with the unit, then please contact Pulsar
Measurement for advice.

To clean the equipment, wipe with a damp cloth. Do not use any solvents on
the enclosure.

Important Information

The unique DATEM software comes into operation as soon as power is
applied and is designed to monitor a moving level or target with the
transducer in a fixed position.

If, after any period of use, it should become necessary to move the
transducer, for any reason, from its original operating position, switch off
the Ultra Twin, before proceeding, in order to prevent any undesirable
updates to the DATEM trace. If after moving the transducer the reading is
not as expected, please refer to Chapter 6 Troubleshooting.

Important Information

Please note that the on-board Lithium battery, mounted to the processor
PCB, is not user serviceable.

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CHAPTER 3 HOW TO USE YOUR ULTRA TWIN

Operating the Controls

Display

On the wall mount model, there are two identical displays, by default, the
top display will provide information on the current mode of operation, and
status of the remote communication for point 1 (transducer 1), while the
bottom display provides the same information for point 2 (transducer 2).

In the case of the fascia model, while in the RUN mode, the single display
will provide information for point 1 (transducer 1) on the main display line
and the auxiliary display provides the same information for point 2
(transducer 2).

When in Program Mode the display of the fascia mount model can be
“toggled” by pressing to change from point 1 to point 2 to access

parameters on each point.
While in the Run Mode the displays will show, the current level reading and

its units of measure, along with status messages with regards to the
Transducer, Echo reception and Fail-Safe Mode. Additionally, they can be
programmed independently to provide status messages on alarms, pumps
etc.

When in the Program mode the display is used to read information on the
Menu System, Point of Measurement, Parameter Number and parameter
details and values, which can be entered.

During Test Mode, the display is used to monitor the simulated level. A bar
graph is also provided which will provide a visual reading of the level, in
percentage of span.

ULTRA TWIN INSTRUCTION MANUAL

30

1. Displays the current mode of operation.

2. Main 6-digit display:

Run Mode; current measurement displayed, dependent on mode
and measurement units chosen, and value of hotkey selected.
Program Mode; displays parameter number and values entered for
parameters.
Test Mode; displays simulated level.

3. Auxiliary Display, scrolling twelve-digit display.

Run Mode; displays measurement units, status messages on signal
and transducer, details of Hot Key function selected. It can be also
programmed to provide notification messages on alarms and
pumps etc. For full details please refer to Display Parameters in the
relevant parameter listing.
Program Mode; displays menu and sub menu headings, parameter
details and options.

4. Communicator status, this displays the status of remote PC

connection and velocity sensor operation.

5. Bar graph display, this gives visual indication of measurement in %

of span.

6. Level indicators:

Run Mode; indicates in which direction the level is moving.
Program Mode: indicates at which level of the menu system you are

at.

1 2 3

4

0%

5

6

Run Mode Program Mode Test Mode 100%

REMOTE COMMUNICATOR OFF

XXXXXXXXXXXX

000.000

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There are two main operating modes for your Ultra Twin, Run Mode and
Program Mode. There is also a Test Mode, used for checking the set-up.
All modes are now described.

Run Mode

This mode is used once the Ultra Twin has been set up in program mode. It
is also the default mode that the unit reverts to when it resumes operation
after a power failure.

When the Ultra Twin is switched on for the first time, it will display, in
metres, the distance from the transducer face to the target. All relays by
default are switched off.

After programming is complete, any relays that are set will operate when the
level reaches the relevant setpoint, and the LED’s will change colour (unless
specifically switched off).

Program Mode

This mode is used to set up the Ultra Twin or change information already
set. You must use either the built-in keypad (standard) or, alternatively the
unit can be set up with a PC via the RS232 Serial Interface.

Entering a value for each of the parameters that are relevant to your
application provides all the programming information.

Points of Measurement (P1 and P2)

All menu options are the same for Point 1 and Point 2. Measurement
points can be “toggled” by pressing to change from point 1 to point 2

to access parameters on each point.

On the Fascia unit the LED will light up green on Relay 1 for Point 1, and Relay
2 for Point 2.

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How to Access Program Mode

To enter program mode on the Ultra Twin, you simply enter the passcode,
via the keypad, followed by the ENTER key. The default passcode is 1997,
so you would press the following:

Once you have entered the program mode the Ultra Twin will automatically
access point 1 menu system, and the top display will show “Program Mode”

in the Mode Status Line and “Quick Setup” in the Auxiliary Display Line, in

the case of the wall mount model, the bottom display, point 2, will be blank.

To change from one point to the other point’s menu system press the
hot key, whilst in any Main Menu heading, e.g. Quick Setup, Application etc.
and you will toggle between the two points and their relevant menu systems

Important Information

There is a time-out period of 15 minutes when in program mode. After
which time the run mode will resumed if you do not press any key.

ENTER

1

9 9 7

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Hot Keys

There are five hot keys on the keypad, which can be used to quickly access
common parameters for viewing only, while in Run Mode. Pressing the hot
key once will display the first parameter, then repeated pressing will display
the others, then the Ultra Twin reverts to Run Mode. In program mode, they
have different functions, the functions are shown below.

HOT KEY

RUN MODE

PROGRAM MODE

When application is Flow, view non­resettable totaliser(s). View and reset
the resettable totaliser(s). When
application is Pump, view information
on total pump running hours, and
individual pump running hours.

Not used with Ultra Twin

Displays echo confidence, echo
strength, height above loss limit (HALL),
average noise, peak noise, and
temperature

Not used with Ultra Twin

Total number of pump starts, and
individual pump starts.

Reset parameter to default
setting

Instantaneous mA output

Not used with Ultra Twin

Dependent on application. Displays
distance, level, space, volume or rate of
change of level.

*Toggle between Point 1 & 2
Main Menu System.
When programming relays
toggle relay setpoints between
Ultra Twin’s units of measure
and % of span.

Not used with Ultra Twin

Takes you to the last
parameter edited when you
first enter program mode.

Shows details of function type, firmware
revision and serial number

Enter decimal point.

*When using a Fascia mount unit and this hotkey is pressed, the relay light
will alternate from Relay 1 to Relay 2 indicating the change between Point 1
& 2.

∑

mA

n

ULTRA TWIN INSTRUCTION MANUAL

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Menu Keys

The menu keys have the following functions:

HOT KEY

FUNCTION

1) Arrow keys for moving left and right around the menu

system.

2) Used in test mode to simulate the level moving up and

down.

1) Used to confirm each action (e.g. select a menu option)

2) Used to confirm questions asked by the Ultra Twin, such as

before restring factory defaults.

Used to navigate up a level in the menu system, and back to run
mode.

Used to cancel a value entered in error

Numeric Keys

These keys are used for entering numerical information during
programming.

CANCEL

ENTER

1

2

3 4 5

6

7

8 9 0

.

+

-

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There are two means of editing parameters, directly or using the menu
system. Each is now described.

Using the Menu System

The menu system has been designed to make the changing of parameters
very simple. There are two levels of menu: Main Menu and Sub Menu.

Main Menu

The main or top menu is common to both points of measurement and
when you first access the program mode your Ultra Twin will display the
menu system for point 1. To change form one point to point 2 menu
system, press the hot key, whilst in any Main Menu heading, e.g. Quick
Setup, Application etc. and you will toggle between the two points and their
relevant menu systems.

Sub Menu

Any sub-menu and the parameters contained in it relating to Point 1
(Transducer 1) is pre-fixed P1, sub-menus and parameters relating to Point 2
(Transducer 2) are pre-fixed P2. Menus and parameters which are common
to both Points (both transducers) are pre-fixed P* e.g., P*104 Measurement
Units.

On the display, there is a line of text that displays the menu system. Pressing
the arrow keys scrolls the display between the top-level menu items, (as
shown below, starting at Quick Setup).

As you press the cursor keys to scroll left and right between these, you can
press ENTER at any time, to select the desired menu heading, and take you
to the sub-menu.

Quick Setup

Application

Relays

Digital
Inputs

Data Logs

mA 2

Output

Display

OCM

P100 = 4 or 5

Compensation

System

Test

Device

Comm

Echo

Process

Volume

P100 = 8 or 9

mA 1

Output

Pump

Advance

Stability

ULTRA TWIN INSTRUCTION MANUAL

36

Each of these options, along with their sub-menus are described later in this
manual. When you move down into the sub-menu, you can scroll round
using the arrow keys press ENTER to go to the required section of
parameters. Once you have reached the relevant section, scroll through the
parameters, and enter the necessary information. To enter the information,
use the numeric keys and then press ENTER, you will then see the message

“Saved!” If you press CANCEL, then the change you made will not be saved,
and the message “Unchanged!!” will be displayed.

When you have finished, press CANCEL to go back to the previous level.
When you have reached the top level, then the Ultra Twin will ask for
confirmation before allowing you to go back into run mode. This is done by
pressing ENTER at the display prompt.

Directly Editing Parameters

If you already know the number of the parameter, that you wish to look at or
edit, simply type the number in at any time while you are in the menu
system. Thus, if you are in either the menu or sub-menu level by pressing a
numeric key, you can enter the parameter number directly and jump straight
there. You cannot type a parameter number whilst at parameter level, only at
one of the two menu levels.

When you are at a parameter, the text line rotates automatically displaying
the parameter name, number, the applicable units, and the maximum and
minimum figure you can enter. The top line shows the value you are setting.

Once you have accessed a parameter, you can either just look at it, or
change it.

Important Information

You can tell which part of the menu system you are in, as the up/down level
indicators, (arrows) next to the bar graph will indicate as follows:

• Top level menu: Down arrow on, to indicate you can move down.

• Sub-menu: Up and Down arrows on, to indicate you can move up to

the top level, and down to parameter level.

• Parameter Level: Up arrow on, to indicate you can move up to sub-

menu level.

• Parameter Editing: No arrows on.

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Once a parameter has been changed, press ‘ENTER’ and you will see the
message “Saved!”. If you press ‘CANCEL’, then the change you made will not

be saved, and the message “Unchanged!!” will be displayed.

You can jump straight to the last parameter you edited, by pressing ‘+/-’
when you first enter program mode.

Test Mode

Test mode is used to simulate the application and confirm that all
parameters and relay setpoints have been entered as expected. During
simulation, there is a choice of whether the relays will change state (hard
simulation) or not (soft simulation), but the LED’s will always change colour
as programmed, and the mA output will change in accordance to the chosen
mode of operation. If you wish to test the logic of the system that the relays

are connected to then select hard simulation, but if you do not wish to
change the relay state, then select a soft simulation.

There are two simulation modes, automatic and manual. Automatic
simulation will move the level up and down between empty level or the pre­determined Start Level (P*983) and Pump/Control relay switch points, if
you wish to change the direction of the level movement e.g., to go beyond
relay setpoints, this can be done by using the arrow keys. In manual
simulation, using the arrow keys will allow you to move the level up and
down as required.

To enter simulation, first go to program mode. Using the menu system,
select menu item ‘Test’, then sub-menu item ‘P1 or P2 Simulation’. Simply
change the value of the parameter P*980 to one of the following:

1= Manual soft simulation
2= Automatic soft simulation
3= Manual hard simulation
4= Automatic hard simulation

To return to program mode, press ‘CANCEL’ and test mode will end.
When in manual simulation, by default test mode will move the level by

0.1m steps. Altering the increment (P*981) will change this value.

ULTRA TWIN INSTRUCTION MANUAL

38

In automatic mode, the rate at which the level moves up and down is set by
the increment (P981 in metres, and the rate (P*982) in minutes, which can
be changed to make the level move up and down faster. E.g. if increment
(P*981) is set for 0.1m and rate (P*982) is set to 1 min then the level will
increase or decrease at a rate of 0.1m/min. To make the simulated level
move slower, decrease the value in increment (P*981) or increase the value
in rate (P*982). To make the simulated level move faster, increase the value
in increment (P*981) or decrease the value in rate (P*982).

Using the Serial Interface

The RS232 serial interface is used to communicate between the Ultra Twin
and a PC using the optional Ultra PC and other associated Pulsar software
packages, to obtain information such as data logging and view echo traces
upload, download and save parameter files. In addition, it can also be used
to control or obtain information using a standard PC or other computer base
equipment. To do so, the settings for control are as follows: baud rate
19,200, 8 data bits, no parity, 1 stop bit.

The device should be connected as shown in Chapter 2 Ultra

Twin Installation.

To use the device remotely, you need to log on to start, and log off when
finished. When logged on, the Ultra Twin will show ‘Remote ON’ on the
display, and “Communicator OFF” when logged off.

All commands should be followed by a carriage return. When logged on, the
unit will respond either OK (or a value) if the command is accepted, or NO if
it is not.

To log on, send the command
/ACCESS:pppp where pppp is the passcode (P922).
To log off, send the command
/ACCESS:OFF
To read a parameter value, send the command
/Pxxx where xxx is the parameter you wish to read, and the Ultra Twin will

respond with the parameter value.
To set a parameter, send the command
/Pxxx:yy where xxx is the parameter number, and yy is the value you wish to

set it to.

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Other commands you can use are:

/DISTANCE (shows current distance)

/LEVEL (shows current level)

/SPACE (shows current space)

/RATE (shows current rate)

/VOLUME (shows current volume)

/TEMP (shows current temperature)

/CURRENTOUT1 (show the mA output 1 value)

/CURRENTOUT2 (show the mA output 2 value)

/BACKUP1 (take backup of parameters to area 1)

/BACKUP2 (take backup of parameters to area 2)

/RESTORE1 (restore parameters from area 1)

/RESTORE2 (restore parameters from area 2)

Please consult Pulsar Measurement or contact your local Pulsar
representative for further details and a full list of available commands.

ULTRA TWIN INSTRUCTION MANUAL

40

Parameter Defaults

When you first switch the Ultra Twin on, it will be reading the distance from
the face of the transducer to the surface. It will be indicating in metres, as
shown on the display. All relays are set OFF.

The date (P*931) and time (P*932) in the Ultra Twin were set at the factory,
but may need checking, and amending if, for example the application is in a
time zone other than GMT, see relevant parameter listing for full details.

In some applications, it is easier to empty the vessel, take a reading from the
Ultra Twin for distance and then setup the empty level to this figure.

Once you are satisfied with the installation, and Ultra Twin is reading what
you would expect in terms of distance from the face of the transducer to the
material level, then you can proceed with programming, for the intended
application. It is sensible to program all the required parameters at the same
time. The system will be then set-up.

Note: The span is automatically calculated from the empty level, so the
empty level should be entered first.

Factory Defaults

When first installing the Ultra Twin, or subsequently moving or using the
unit on a new application, before proceeding to program the unit for its
intended application it is recommended that you ensure that all
parameters are at their default values by completing a Factory Default
P930, as described in the relevant unit type parameter guide.

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CHAPTER 4 QUICK SETUP GUIDE

This quick set-up guide shows you how to get up and running in a few
minutes in just four easy steps after installing your Ultra Twin.

Enter Program Mode

First you need to go from run mode into program mode. Assuming the
passcode is the default 1997, then you should enter the following on the
keypad:

Choose Quick Setup

Now you need to go into the quick setup. You will see on the menu the
words ‘Quick Setup’, which is the first item on the menu system. By default,
the Ultra Twin will always access point 1 menu system, to change to point 2
menu, press the hot key. Try pressing the two arrow keys to see some
more menu options, but return to Quick Setup, and press:

1 = Level or Volume (Level/Vol)
2 = Pump Control (Pump)
3 = Open Channel Flow measurement (OCM Flow)

APPLICATION

UNIT TYPE

1 = Level/Vol

When selected the Ultra Twin will be configured for
Level/Volume measurement.

2 = Pump

When selected the Ultra Twin will be configured for pump
control.

3 = Flow

When selected the Ultra Twin will be configured for OCM
measurement.

ENTER

1

9 9 7

ENTER

This takes you to the common

applications parameters, and you will see

some options appearing on the display.

ULTRA TWIN INSTRUCTION MANUAL

42

Level or Volume

If you want to set-up a level or volume application, as described in the
following examples, then choose 1 for Level/Vol. You will then be given a
choice of 1 = Level or 2 = Volume.

Choose Your Application

If you want to set-up a basic level monitoring application, as described in
the following example 1, then choose 1 for Level/Vol, and then 1 for level.

If you want to set-up a level monitoring application with control relays, as
described in the following example 2, then choose 1 for Level/Vol.
Followed by 1 for level and choose either control down (press 1) or control
up (press 2).

If you want to set-up a volume application, as described in the following
example 3, then choose 1 for Level/Vol. Followed by 2 for volume, you
then need to decide if any control function is required and choose the
appropriate option no control (press 0), control down (press 1) or control up
(press 2).

Once you have chosen your application you will be asked a series of
questions which are answered by choosing the appropriate option as
detailed in the flow chart below. Once all the questions have been answered
you will be prompted to provide further information, as detailed in the
tables below, to complete the programming of the unit.

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Level/Volume Quick Setup Menu

Application

1 = Level/Vol

For Each Alarm

1 = Set to Relay 1

2 = Set to Relay 2
3 = Set to Relay 3
4 = Set to Relay 4
5 = Set to Relay 5

6 = Set to Relay 6

0 = No Control

1 = Control Down

2 = Control Up

No. of Control Relays

1 = 1 Control Relay
2 = 2 Control Relay
3 = 3 Control Relay
4 = 4 Control Relay
5 = 5 Control Relay

6 = 6 control Relay

For each Cntl. Relay

1 = Set to Relay1

2 = Set to Relay 2
3 = Set to Relay 3
4 = Set to Relay 4
5 = Set to Relay 5
6 = Set to Relay 6

How Many Alarm

0 = No Alarms
1 = One Alarm

2 = Two Alarms

3 = Three Alarms

4 = Four Alarms

5 = Five Alarms

6 = Six Alarms

List will be truncated

according to the

number of Control

relays selected

For Each Alarm

1 = High Alarm

2 = Low Alarm

3 = Hi Hi Alarm

4 = Lo Lo Alarm

5 = Loss of Echo

1 = Level

2 = Volume

ULTRA TWIN INSTRUCTION MANUAL

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Wait….

If you have selected a Volume Application, you will now be prompted to enter
details required for the calculation of volume.

PARAMETER

DEFAULT

DESCRIPTION

P101 Transducer

2 = dB6

Type of transducer being used

P102 Material

1 = Liquid

Material in the vessel, either liquid or
solid. If the solid lays flat, then it can
be entered as liquid.

P104
Measurement Units

1 = metres

Select units to be used for
programming measurement
information.

P105
Empty Level

6.00m

Distance from the face of the
transducer to the material at the
bottom of the vessel.

P106 Span

5.70m

Distance from the empty level (0%
full) to span (100% full).

PARAMETER

DEFAULT

DESCRIPTION

P600
Vessel Shape

0=Cyl. Flat
Base

Shape of vessel being monitored.

P601-P603
Vessel Dimensions

Dependent
on vessel
shape
selected.

Enter Vessel dimensions as required
P605 Volume

units

3 = Cubic m

Selects volume units required.

P607
Max Volume

Read Only

Displays the calculated Volume in
P605 units.

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For More Options Hit Enter

PARAMETER

DEFAULT

DESCRIPTION

P213 / P214
Relay 1 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P223 / P224
Relay 2 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P233 / P234
Relay 3 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P243 / P244
Relay 4 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P253 / P254
Relay 5 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P263 / P264
Relay 6 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P830
mA Out Range

2 = 4-20mA

Determines the mA output
range.
0 = Off, 1 = 0 to 20mA
2 = 4 to 20mA, 3 = 20 to
0mA, 4 = 20 to 4mA.

P870
Fill Damping

10.00 m/min

Rate of maximum fill rate
(set above the actual fill
rate of the vessel).

P871
Empty Damping

10.00 m/min

Rate of maximum empty
rate (set above the actual
empty rate of the vessel).

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46

The default values used for determining the relay setpoints, when setting
Alarm and Control relays, via the Quick Setup menu are entered as a % of
span and are as follows.

APPLICATION

NO. OF

CTL

RELAYS

CTL RELAY

NUMBER

ON

SETPOINT

OFF

SETPOINT

Control Down

One

Control 1

80%

20%

Control Down

Two

Control 1
Control 2

80%
70%

20%
20%

Control Down

Three

Control 1
Control 2
Control 3

80%
70%
60%

20%
20%
20%

Control Down

Four

Control 1
Control 2
Control 3
Control 4

80%
70%
60%
50%

20%
20%
20%
20%

Control Down

Five

Control 1
Control 2
Control 3
Control 4
Control 5

80%
70%
60%
50%
40%

20%
20%
20%
20%
20%

Control Down

Six

Control 1
Control 2
Control 3
Control 4
Control 5
Control 6

80%
70%
60%
50%
40%
30%

20%
20%
20%
20%
20%
20%

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APPLICATION

NO. OF

CTL

RELAYS

CTL RELAY

NUMBER

ON

SETPOINT

OFF

SETPOINT

Control Up

One

Control 1

20%

80%

Control Up

Two

Control 1
Control 2

20%
30%

80%
80%

Control Up

Three

Control 1
Control 2
Control 3

20%
30%
40%

80%
80%
80%

Control Up

Four

Control 1
Control 2
Control 3
Control 4

20%
30%
40%
50%

80%
80%
80%
80%

Control Up

Five

Control 1
Control 2
Control 3
Control 4
Control 5

20%
30%
40%
50%
60%

80%
80%
80%
80%
80%

Control Up

Six

Control 1
Control 2
Control 3
Control 4
Control 5
Control 6

20%
30%
40%
50%
60%
70%

80%
80%
80%
80%
80%
80%

RELAY

FUNCTION

RELAY ID

ON

SETPOINT

OFF

SETPOINT

Alarm

HiHi

90%

85%

Alarm

High

85%

80%

Alarm

Low

10%

15%

Alarm

LoLo

5%

10%

ULTRA TWIN INSTRUCTION MANUAL

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Example 1 Level Monitoring with Alarms

A vessel, containing liquid that has a variation in level that is to be
monitored, with a high-level alarm set on Relay 1 and low-level alarm set on
Relay 2.

This application is to be assigned to Point 1 (Transducer 1)

In this example, when the level rises to 2.38 m, relay 1 will come on until the
level drops to 2.24 m when it will turn off. If the level drops to 0.28 m, then
relay 2 will come on until it rises 0.42 m when it will turn off.

The display will show the level in the tank.

The mA output will be representative of level where 4mA = empty level (0%)
and 20mA = 2.8m (100%).

Empty Distance (P105), 3.5m

100%. Span (P106), 2.8m

85%. High alarm on (P213), 2.38m

80%. High alarm off (P214), 2.24m

0%, Empty level

10%. Low alarm on (P223), 0.28m

15%, Low alarm off (P224), 0.42m

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To program the Ultra Twin for Example 1 Level Monitoring with Alarms by
using the Quick Setup menu proceed as follows. If required to access
Program Mode, key in the passcode 1997 and press ENTER,

At the Quick Setup menu press ENTER and as prompted, by the questions,
select the relevant option and ENTER.

QUESTION

OPTION

Level/Volume

1 = Level App.

No. of alarms

2 = 2 Alarms

Type alarm 1

1 = High

Alarm no.1

1 = Set to relay 1

Type alarm 2

2 = Low

Alarm no.2

2 = Set relay 2

Xducer (P101)

2 = dB6

Material (P102)

1 = Liquid

Measurement units (P104)

1 = Metres

Empty Level (P105)

3.5m

Span (P106)

2.8m

Programming is now complete, and the unit can be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to the Run Mode.

Important Notice

If relay setpoints do not meet the exact requirements of the application,

they can be modified to suit by pressing ENTER when, “For More Options
Hit Enter”, is displayed, and entering new values to relay setpoints as

required. Alternatively, the relevant relay setpoint can be accessed either
by the main menu system or directly via parameter number and changed
as necessary.

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50

Example 2 Level Monitoring and Control (up or down)

A vessel, containing a liquid that has a variation in level that is to be
monitored, and when the level reaches a specific point, the vessel is pumped
down, with the fluid being transferred to another process. The pump will be
assigned to Relay 1 a High Alarm to Relay 2 and Low Alarm to Relay 3.

This application is to be assigned to Point 2 (Transducer 2)

In this example, there is a control relay (relay 1), which will come on if the
level rises to 2.24m, and go off when the level drops to 0.56m (control
down). If the level rises to 2.4m, then the high-level alarm (relay 2) will come
on until the level drops to 2.24m. If the level falls to 0.28m, then the low­level alarm (relay 3) will come on until the level rises to 0.42m.

Alternatively, if it is a control up application, then the on and off points for
the control relay are reversed, so the control device comes on when the level
is at 0.56m and goes off when it rises to 2.24m.

Empty Distance (P105), 3.5m

100%. Span (P106), 2.8m

85%. High alarm on (P213), 2.38m

80%. High alarm off (P214), 2.24m

0%, Empty level

10%. Low alarm on (P233), 0.28m

15%, Low alarm off (P234), 0.42m

80%. Control (down) on (P213), 2.24m

20%. Control (down) off (P214), 0.56m

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The display will show the level in the tank and the mA output will be
representative of level where 4mA = empty level (0%) and 20mA = 2.8m
(100%).

To program the unit for Example 2 Level Monitoring and Control by using
the Quick Setup menu proceed as follows. If required access the Program
Mode, key in the passcode 1997 and press ENTER.

At the Quick Setup menu press the hot key and toggle to Point 2 display
and press ENTER and then as prompted, by the questions, select the
relevant option and ENTER.

Using the ‘right’ arrow key, go to the Quick Setup menu press ENTER and
as prompted, by the questions, select the relevant option and press ENTER.

QUESTION

OPTION

Level/Volume

1 = Level App.

Control

1 = Control down

No. of controls

1 = 1 Relay

Control no.1

1 = Set to relay 1

No. of alarms

2 = 2 Alarms

Type alarm 1

1 = High

Alarm no.1

1 = Set to relay 2

Type alarm 2

2 = Low

Alarm no.2

The unit knows that only Relay 3 is available and
so will automatically set Alarm 2 to Relay 3.

Xducer (P101)

2 = dB6

Material (P102)

1 = Liquid

Measurement units (P104)

1 = Metres

Empty Level (P105)

3.5m

Span (P106)

2.8m

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52

Programming is now complete, and the unit can be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to the Run Mode.

Important Notice

If relay setpoints do not meet the exact requirements of the application,

they can be modified to suit by pressing ENTER when, “For More Options
Hit Enter”, is displayed and entering new values to relay setpoints as

required. Alternatively, the relevant relay setpoint can be accessed either
by the main menu system or directly via parameter number and changed,
as necessary.

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Example 3 Volume Application

A cylindrical tank with a diameter of 2m and a flat base that is typically used
to temporarily hold liquid, and you wish to know the volume of liquid. You
also require a high and low alarm and when the level reaches a specific
point, the vessel is pumped down, with the fluid being transferred to
another process.
The application is to be assigned to Point 1 (Transducer 1)

In this example, there is a control down relay (relay 1), which will come on if
the level rises to 2.24m, and go off when the level drops to 0.7m. (control
down). If the level rises to 2.38m, then the high-level alarm (relay 2) will
come on until the level drops to 2.24 m. If the level falls to 0.28m, then the
low-level alarm (relay 3) will come on until the level rises to 0.42m.

The display will show the volume of fluid in the tank and the mA output will
be representative of Volume where 4mA = empty (0%) and 20mA = Max
Volume (100%).

Empty Distance (P105), 3.5m

100%. Span (P106), 2.8m

85%. High alarm on (P213), 2.38m

80%. High alarm off (P214), 2.24m

0%, Empty level

10%. Low alarm on (P233), 0.28m

15%, Low alarm off (P234), 0.42m

80%. Control (down) on (P213), 2.24m

20%. Control (down) off (P214), 0.7m

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54

To program the Ultra Twin for Example 3 Volume Application with
Control by using the Quick Setup menu proceed as follows. If required
access the Program Mode and key in the passcode 1997 and press ENTER.

Using the ‘right’ arrow key, go to the Quick Setup menu press ENTER and
as prompted, by the questions, select the relevant option and ENTER.

Programming is now complete, and the unit can be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to the Run Mode.

QUESTION

OPTION

Level/Volume

2 = Volume App.

Control

1 = Control down

No. of controls

1 = 1 Relay

Control no.1

1 = Set to relay 1

No. of alarms

2 = 2 Alarms

Type alarm 1

1 = High

Alarm no.1

1 = Set to relay 2

Type alarm 2

2 = Low

Alarm no.2

The unit knows that only Relay 3 is available and
so will automatically set Alarm 2 to Relay 3.

Xducer (P101)

2 = dB6

Material (P102)

1 = Liquid

Measurement units (P104)

1 = Metres

Empty Level (P105)

3.5m

Span (P106)

2.8m

Vessel shape (P600)

0 = Cylindrical flat base

Vessel dimensions

Enter vessel dimensions as requested (depends
on vessel shape chosen)

Volume units

Select as required

Max Volume (Read only)

Displays the Max volume as calculated by the
Ultra Twin

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Important Notice

If relay setpoints do not meet the exact requirements of the application,

they can be modified to suit by pressing ENTER when, “For More Options
Hit Enter”, is displayed and entering new values to relay setpoints as

required. Alternatively, the relevant relay setpoint can be accessed either
by the main menu system or directly via parameter number and changed,
as necessary.

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56

Example 4 Differential Control

In this example the Ultra Twin is being used to control a rake on a screen,
which is filtering out solids in the inlet flow to a wastewater treatment plant.

A high alarm has been assigned to Point 1 (Transducer 1), on the

upstream side and a low alarm, to Point 2 (Transducer 2) on the
downstream side. The Diff. Control, to operate the rake is on relay 1, high

alarm, on Transducer 1 (upstream), is on relay 2 and, low alarm, on
Transducer 2 (downstream) is on relay 3.

Important Notice

In this example, the transducers are mounted at the same height. If the
transducers are mounted at different heights, ensure that the empty levels
are correct such that there is no differential present when the level is zero
on both sides.

0%. Empty Level

Empty Distance (P105), 3.5m

100%. Span (P106), 2.8m

85%. Pt 1, high alarm on (P223), 2.38m

80%. Pt 1, high alarm off (P224), 2.24m

10%. Pt 2, low alarm on (P233), 0.28m

15%. Pt 2, low alarm off (P234), 0.42m

1%. Differential control on (P214), 0.03m

5%. Differential control off (P223), 0.14m

{

Point 1

(Up Stream)

Point 2

(Down Stream)

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This will operate as follows, when the level rises on the upstream side and/or
the level on the downstream side falls, resulting in a differential of 0.14m,
(anywhere within the working span), indicating that the screen is blocked,
relay 1 will come on and operate the rake. Once the level on the inflow has
decreased and the differential level falls to 0.03m relay 1 will switch off the
rake.

Should the level on the upstream side rise, for any reason, to a level of

2.38m, relay 2 will operate to give a high alarm, once the level has fallen
back to 2.24m the alarm will go off. A falling level in the downstream side,
for any reason, will operate relay 3 at 0.28m giving an alarm for low level,
once the level has risen again to a value of 0.42 m relay 3 will reset.

To program the Ultra Twin for Example 4 Differential Control by using the
Quick Setup menu proceed as follows. Access the Program Mode and key
in the passcode 1997 and press ENTER. At the Quick Setup menu press

ENTER and as prompted, by the questions, select the relevant option and
ENTER.

QUESTION

OPTION

Level/Pump /Flow

1 = Level/Vol

Level or Volume

1 = Level

Control

1 = Control Down

No. of Control relays

1 = 1 Control

Control No. 1

1 = Set to Relay 1

No. of alarms

1 = 1 Alarm

Type Alarm 1

1 = High Alarm

Alarm No. 1

Set to Relay 2

Xducer (P1-101)

2 = dB6

Material (P1-102)

1 = Liquid

Measurement units (P1-104)

1 = Metres

Empty Level (P1-105)

3.5m

Span (P1-106)

2.8m

Press CANCEL to come out of the Quick setup menu for point 1 and press
the hotkey to switch to point 2.

At the Quick Setup menu for point 2 press ENTER and as prompted by the
questions, select the relevant option, and ENTER.

ULTRA TWIN INSTRUCTION MANUAL

58

QUESTION

OPTION

Level/Pump /Flow

1 = Level/Vol

Level or Volume

1 = Level

Control

0 = No Control

No. of alarms

1 = 1 Alarm

Type Alarm 1

2 = Low Alarm

Alarm No. 1

Set to Relay 3

Xducer (P1-101)

2 = dB6

Material (P1-102)

1 = Liquid

Measurement units (P1-104)

1 = Metres

Empty Level (P1-105)

3.5m

Span (P1-106)

2.8m

When prompted “For more options hit ENTER”, press ENTER. Use the left
and right arrow keys and the ENTER key to access the following parameters
and change their values to those shown below.

Press ENTER to save the new values.

PARAMETER

VALUE

P*213, R1 Set 1

0.14m

P*214, R1 Set 2

0.03m

Press CANCEL and when Quick Setup is displayed scroll across to the Relays
menu. Press ENTER and press ENTER again when * Relay 1 is shown on the
screen. Scroll across to P*216 and set the following. This will set up the
differential control relay.

PARAMETER

VALUE

P*216, R1 Allocation

5 = Diff. -2

After pressing ENTER to save the parameter, press CANCEL until Relays is
displayed on the screen.

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On the wall mount model, to display the Differential on the main display line
of the upper LCD, point 1 Level on the auxiliary display of the upper LCD and
Point 2 Level on the main display on the lower LCD, change the following
parameters. Press the hotkey to switch back to point 1. The upper LCD
should now show Relays. Press the Right arrow key until Display is shown
on the screen. Press ENTER and press ENTER again when P1 Options is
displayed on the screen. Use the left and right arrow keys and ENTER key
to change the following parameter and press ENTER to save the new value.

PARAMETER

VALUE

P1-805, Disp. Source

5 = Diff. -2

After pressing ENTER to save the parameter, press CANCEL to display P1
Options on the screen. Press the Right arrow key until P1 Auxiliary is
displayed and press ENTER.

Use the left and right arrow keys and ENTER key to change the following
parameter and press ENTER to save the new value.

PARAMETER

VALUE

P1-816, Aux Source

1 = Point 1

Programming is now complete, and the unit can be returned to the run mode,
press CANCEL until Run Mode? Is displayed on the LCD press ENTER, and
the Ultra Twin will return to the Run Mode.

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60

Pump

If you want to set-up a pump application, as described in the following
examples, then choose 2 for pump. You will then be given a choice of 1 =
Level App. 2 = Pump Down or 3 = Pump Up.

Choose Your Application

If you want to set-up a pump down (sump control) application, as described
in the following example 1 then choose 2 for pump followed by 2 for
pump down.

If you want to set-up a pump up (reservoir control) application, as described
in the following example 2 then choose 2 for pump followed by 3 for
pump up.

Once you have chosen your application you will be asked a series of
questions which are answered by choosing the appropriate option as
detailed in the flow chart below. Once all the questions have been answered
you will be prompted to provide further information, as detailed in the
tables below, to complete the programming of the unit.

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Quick Setup

Quick Setup

For Each Alarm

1 = High Alarm
2 = Low alarm
3 = Hi Hi Alarm
4 = Lo Lo alarm
5 = Loss of Echo

1 = Level

2 = Pump Down

3 = Pump Up

How Many Pumps

1 = One Pump

2 = Two Pumps

3 = Three Pumps
4 = Four Pumps
5 = Five Pumps
6 = Six Pumps

For each Pump Relay

1 = Set to Relay 1
2 = Set to Relay 2
3 = Set to Relay 3
4 = Set to Relay 4
5 = Set to Relay 5
6 = Set to Relay 6

How Many Alarms

0 = No Alarms
1 = One Alarm
2 = Two Alarms
3 = Three Alarms
4 = Four Alarms
5 = Five Alarms
6 = Six Alarms
List will be truncated
according to the
number of Control
relays selected.

Pump Duty

1 = Fixed Duty Assis
2 = Fixed Duty Backup
3 = Alt Duty Assist
4 = Alt Duty Backup
5 = Duty Backup & Ass
6 = Ser Ratio Duty Ass
7 = Ser Ratio Duty B’up
8 = FOFO Alt Duty Ass
9 = Ser Ratio Stby
10 = 2 Pump Set

For each Alarm

1 = Set to Relay 1
2 = Set to Relay 2
3 = Set to Relay 3
4 = Set to Relay 4
5 = Set to Relay 5
6 = Set to Relay 6

Wait…

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62

PARAMETER

DEFAULT

DESCRIPTION

P101 Transducer

2 = dB6

Type of transducer being used.

P102 Material

1 = Liquid

Material in the vessel, either liquid or
solid. If the solid lays flat, then it can be
programmed as liquid.

P104 Measurement
Units

1 = metres

Select units to be used for programming
measurement information.

P105 Empty Level

6m

Distance from the face of the transducer
to the material at the bottom of the
vessel.

P106 Span

5.7m

Distance from the empty level (0% full) to
span (100% full).

For More Options Hit Enter

PARAMETER

DEFAULT

DESCRIPTION

P213 / P214
Relay 1 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P223 / P224
Relay 2 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P233 / P234
Relay 3 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P243 / P244
Relay 4 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P253 / P254
Relay 5 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

P263 / P264
Relay 6 ON/OFF
setpoints

Factory pre-set as a % to
appropriate level according
to the span already
entered. See tables below.

Either Alarm or Level
control. Depends on
application.

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PARAMETER

DEFAULT

DESCRIPTION

P830 mA Out Range

2 = 4 to 20mA

Determines the mA output
range. 0 = Off, 1 = 0 to 20mA,
2 = 4 to 20mA, 3 = 20 to 0mA,
4 = 20 to 4mA.

P870 Fill Damping

10m/min

Rate of maximum fill rate (set
above the actual fill rate of the
vessel).

P871 Empty
Damping

10m/min

Rate of maximum empty rate
(set above the actual rate of
the vessel).

The default values used for determining the relay setpoints, when setting
Alarm and Pump relays, via the Quick Setup menu are entered as a % of
span and are as follows.

APPLICATION

NO. OF
PUMPS

PUMP

NUMBER

ON

SETPOINT

OFF

SETPOINT

Pump Down

One

Pump 1

80%

20%

Pump Down

Two

Pump 1
Pump 2

80%
70%

20%
20%

Pump Down

Three

Pump 1
Pump 2
Pump 3

80%
70%
60%

20%
20%
20%

Pump Down

Four

Pump 1
Pump 2
Pump 3
Pump 4

80%
70%
60%
50%

20%
20%
20%
20%

Pump Down

Five

Pump 1
Pump 2
Pump 3
Pump 4
Pump 5

80%
70%
60%
50%
40%

20%
20%
20%
20%
20%

Pump Down

Six

Pump 1
Pump 2
Pump 3
Pump 4
Pump 5
Pump 6

80%
70%
60%
50%
40%
30%

20%
20%
20%
20%
20%
20%

ULTRA TWIN INSTRUCTION MANUAL

64

APPLICATION

NO. OF
PUMPS

PUMP

NUMBER

ON

SETPOINT

OFF

SETPOINT

Pump Down

One

Pump 1

50%

20%

Pump Down

Two

Pump 1
Pump 2

50%
70%

20%
20%

Pump Down

Three

Pump 1
Pump 2
Pump 3

50%
60%
70%

20%
20%
20%

Pump Down

Four

Pump 1
Pump 2
Pump 3
Pump 4

40%
50%
60%
70%

20%
20%
20%
20%

Pump Down

Five

Pump 1
Pump 2
Pump 3
Pump 4
Pump 5

40%
50%
60%
70%
75%

20%
20%
20%
20%
20%

Pump Down

Six

Pump 1
Pump 2
Pump 3
Pump 4
Pump 5
Pump 6

40%
50%
60%
70%
75%
80%

20%
20%
20%
20%
20%
20%

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APPLICATION

NO. OF
PUMPS

PUMP

NUMBER

ON

SETPOINT

OFF

SETPOINT

Pump Up

One

Pump 1

50%

20%

Pump Up

Two

Pump 1
Pump 2

50%
30%

20%
20%

Pump Up

Three

Pump 1
Pump 2
Pump 3

50%
40%
30%

20%
20%
20%

Pump Up

Four

Pump 1
Pump 2
Pump 3
Pump 4

60%
50%
40%
30%

20%
20%
20%
20%

Pump Up

Five

Pump 1
Pump 2
Pump 3
Pump 4
Pump 5

60%
50%
40%
30%
75%

20%
20%
20%
20%
20%

Pump Up

Six

Pump 1
Pump 2
Pump 3
Pump 4
Pump 5
Pump 6

40%
50%
60%
70%
75%
80%

20%
20%
20%
20%
20%
20%

RELAY

FUNCTION

RELAY ID

ON

SETPOINT

OFF

SETPOINT

Alarm

HiHi

90%

85%

Alarm

High

85%

80%

Alarm

Low

10%

15%

Alarm

LoLo

5%

10%

Important Notice

When using the Quick Setup Menu relays will be allocated to the point of
measurement you are currently setting up and the availability of relays will
depend on the number of relays used when setting up the previous point
of measurement via the Quick Setup Menu for that point.

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66

Example 2 Sump Control (pump down)

A sump is typically used to temporarily hold water or effluent, and when the
level reaches a specific point, the sump is pumped down, with the fluid
being transferred to another process.

In this example, there are two pumps, which will be set to alternate duty
assist, so they come on alternately. Pump 1 is to be set to relay 1, pump 2 to
relay 2, and the high-level alarm to relay 3.

This will operate as follows. During normal operation, pump 1 will come on
at 0.84m and pump down to 0.56m. The setpoints are then shifted to pump
2, which will come on first next time. During peak periods, when pump 1
cannot cope, pump 1 will come on at 0.84m, pump 2 will come on at 1.4m,
and pump down to 0.56m. The setpoints are then shifted to pump 2, which
will come on first next time.

If neither pump can cope, and the level rises to 2.38m, then the alarm relay
(relay 3) will come on and go off when the level falls to 2.24m. This will
indicate insufficient capacity of the pumps. The display will show the level in
the sump and the mA output will be representative of level where 4mA =
empty level (0%) and 20mA = 2.8m (100%).

Empty Distance (P105), 3.5m

100%. Span (P106), 2.8m

85%. High alarm on (P233), 2.38m

80%. High alarm off (P234), 2.24m

0%, Empty level

20%. Pump 1+2 off (P214, 224), 0.56m

30%. Pump 1 on (P213), 0.56m

50%. Pump 2 on (P223), 1.4m

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To program the Ultra Twin for Example 2 Sump control (pump down) by
using the Quick Setup menu proceed as follows. If required to access
Program Mode, key in the passcode 1997 and press ENTER.

At the Quick Setup menu press ENTER and as prompted, by the questions,
select the relevant option and ENTER.

QUESTION

OPTION

Application

2 = Pump

Level/Pump Up/Down

2 = Pump Down

No. of Pumps

2 = 2 Pumps

Pump Duty

3 =Alt Duty Assist

Pump No. 1

1 = Set to relay 1

Pump No. 2

2 = Set to relay 2

No. of Alarms

1 = 1 Alarm

Type Alarm 1

1 = High

Alarm No. 1

5 = Set to relay 5

Xducer (P1-101)

2 = dB6

Measurement units (P-1104)

1 = Metres

Empty Level (P1-105)

3.5m

Span (P1-106)

2.8m

Programming is now complete, and the unit can be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to the Run Mode.

Important Notice

If relay setpoints do not meet the exact requirements of the application,

they can be modified to suit by pressing ENTER when, “For More Options
Hit Enter”, is displayed, and entering new values to relay setpoints as

required. Alternatively, the relevant relay setpoint can be accessed either
by the main menu system or directly via parameter number and changed
as necessary.

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Example 3 Reservoir Control (pump Up)

A sump is typically used to temporarily hold water or effluent, and when the
level reaches a specific point, the sump is pumped down, with the fluid
being transferred to another process.

In this example, there are two pumps, which will be set to alternate duty
assist, so they come on alternately. Pump 1 is to be set to relay 2, pump 2 to
relay 3, and the low-level alarm to relay 1. This will operate as follows:

During normal operation, pump 1 will come on at 1.96m and pump up to

2.24m. The setpoints are then shifted to pump 2, which will come on first
next time. During peak periods, when pump 1 cannot cope, pump 1 will
come on at 1.96m and pump 2 will come on at 1.4m and pump up to 2.24m.
The setpoints are then shifted to pump 2, which will come on first next
time. If both pumps cannot cope, and the level falls to 0.28m, then the
alarm relay (relay 3) will come on and go off when the level rises to 0.42m.
This will indicate insufficient capacity of the pumps.

The display will show the level in the sump and the mA output will be
representative of level where 4mA = empty level (0%) and 20mA = 2.8m
(100%).

50%. Pump 2 on (P233), 1.4m

0% - Empty level

80%. Pump 1&2 off (P224, P234), 2.24m
10% - Low alarm on (P213), 0.28m

Empty distance (P105), 3.5m

70%. Pump 1 on (P223), 1.96m

100%. Span (P106), 2.8m

15%. Low alarm off (214), 0.42m

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To program the Ultra Twin for Example 3 Reservoir Control (pump up) by
using the Quick Setup menu proceed as follows. If required access the
Program Mode and key in the passcode 1997 and press ENTER

Using the ‘right arrow key, go to Quick Setup menu press ENTER and as
prompted, by the questions, select the relevant option and ENTER.

QUESTION

OPTION

Application

2 Pump

Level/Pump Up/Down

2 = Pump Up

No. of Pumps

2 = 2 Pumps

Pump Duty

3 =Alt Duty Assist

Pump No. 1

1 = Set to relay 1

Pump No. 2

2 = Set to relay 2

No. of alarms

1 = 1 Alarm

Type Alarm 1

2 = Low

Alarm No. 1

3 = Set to Relay 3

Xducer (P101)

2 = dB6

Measurement units (P104)

1 = Metres

Empty Level (P105)

3.5m

Span (P106)

2.8m

Programming is now complete, and the unit can be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to the Run Mode.

Important Notice

If relay setpoints do not meet the exact requirements of the application,

they can be modified to suit by pressing ENTER when, “For More Options
Hit Enter”, is displayed, and entering new values to relay setpoints as

required. Alternatively, the relevant relay setpoint can be accessed either
by the main menu system or directly via parameter number and changed,
as necessary.

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70

Flow

If you want to set-up a flow application, as described in the following
examples, then choose 3 for flow. You will then be given a choice of
Primary Measuring Devices to choose from.

Choose Your Application

There are five categories of Primary Measuring Device, which are all
described in this chapter. They are exponential, BS3860 flumes, BS3860
weirs, special and universal.

Calculations for flow can be performed using absolute or ratiometric
calculations. The answer will be the same, the choice of calculation method
being limited to the amount of information available, with regards to the
primary measuring device.

For ratiometric calculation it is normally sufficient to know the maximum
flow at maximum head for the device in question. All types of primary
measuring devices can be set up with a choice of alarms.

If you want to set-up a basic exponential device, as described in the
following example 1, then choose 3 for Flow, followed by 1 for exponent.
You then need to select the primary measuring device for your application
from the following available options: suppressed rectangular weir,

Cipolletti (trapezoidal) weir, Venturi flume, Parshall flume, Leopold
Lagco flume, V notch weir or other, for any other type of exponential

device.
To set-up an application for a BS3680 flume, as described in the following

example 2, then choose 3 for Flow followed by 2 for 3680 Flume. You then
need to select the primary measuring device for your application from the
following available options: rectangular flume with or without hump, U-
throated flume with or without hump.

To set-up an application for a BS3680 weir, as described in the following
example 3, then choose 3 for Flow followed by 3 for 3680 Weir. You then
need to select the primary measuring device for your application from the
following available options: rectangular weir, V notch full 90o (90degrees),

V notch half 90o (53 degree 8 minutes), V notch quarter 90o (28 degree
4 minutes) or a Broad Crested Weir.

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To set-up an application for a device contained in special, choose 3 for Flow
followed by 5 for Special. You then need to select the primary measuring

device for your application from the following available options: Palmer
Bowlus flume, H-flume or a V notch, other than BS3680.

For devices, which do not match any of the above devices the application
can be setup using a universal flow calculation, to select this option
choose 3 for Flow followed by 6 for universal. You then need to select the
primary measuring device for your application from the following available
options: linear flow or curved flow.

Once you have chosen your application you will be asked a series of
questions which are answered by choosing the appropriate option as
detailed in the flow chart below. Once all the questions have been answered
you will be prompted to provide further information, as detailed in the
tables below, to complete the programming of the unit.

ULTRA TWIN INSTRUCTION MANUAL

72

Quick Setup Menu

PMD Type

0 = Off (No Calculation)
1 = Exponential
2 = BS3680 Flumes
3 = BS3680 Weirs

4 = Not Available

5 = Special
6 = Universal

For Each Alarm

1 = Set to Relay 1
2 = Set to Relay 2
3 = Set to Relay 3
4 = Set to Relay 4
5 = Set to Relay 5

6 = Set to relay 6

Exponential

1 = Supp. Rect.
2 = Trapezoid
3 = Venturi
4 = Parshall
5 = Leopold L.
6 = V-Notch
7 = Other

BS3680 Flumes

1 = Rectangular
2 = Rect. + Hump
3 = U-Throat
4 = U-Throat + Hump

BS3680 Weirs

1 = Rectangular
2 = V-Notch 90o (Full 90o)
3 = V-Notch 53

o

8’ (Half 90

o

)

4 = V-Notch 28

o

4’ (Qtr 90

o

)

5 = Broad Crested

Special

1 = Palmer Bowlus
2 = H-Flume
3 = V-Notch Angle

Calculation

1 = Absolute
2 = Ratiometric

How Many Alarms

0 = No Alarms

1 = One Alarm

2 = Two Alarms
3 = Three Alarms
4 = Four Alarms
5 = Five Alarms
6 = Six Alarms

For Each Alarm

1 = High Alarm
2 = Low Alarm
3 = Hi Hi Alarm
4 = Lo Lo Alarm
5 = Loss of Echo

Application

3 = Flow

Universal

1 = Linear flow
2 = Curved flow

PULSAR MEASUREMENT

73

Wait ….

PARAMETER

DEFAULT

DESCRIPTION

P101
Transducer

1 = dB Mach3

Type of transducer being used

P706
Volume units

1 = Litres

Units of flow as on display and used for
calculations.
1 = Litres 2 = Cubic metres
3 = Cubic Feet 4 = UK gallons
5 = US gallons 6 = Mil. USG

P707
Time Units

1 = per second

Units of time that volume units will be
displayed and calculated in

P104
Measurement units

1 = Metres

Used to enter dimensions and displayed
where appropriate:
1 = Metres 2 = Centimetres
3 = Millimetres 4 = Feet
5 = Inches

P105
Empty Level

2.425m

Distance from the end of the transducer
horn (dB Mach3) or face of the
transducer to the material at the
bottom of the measuring element

P703
Minimum head

0.00m

Distance from empty point (P105) to
zero flow.

P704
Max head

2.425m

Distance from zero flow to max flow. It
should be noted that any change to
P704 updates P106 Span and vice versa.

P824
Totaliser Allocation

1 = Point 1

Enables the Totaliser to a specific point
of flow measurement or a combination
of flow when both points set to
measure Flow. For full list of options see
P824 in Chapter 5 Parameter Guide.

P815
Aux Mode

2 = Level

Enables the Auxiliary display line to
display additional information whilst in
RUN mode. For full list of options see
P815 in Chapter 5 Parameter Guide.

ULTRA TWIN INSTRUCTION MANUAL

74

PARAMETER

DEFAULT

DESCRIPTION

P816
Aux Source

0 = Off

Determines which point or combination
of points, that the Auxiliary display line
will relate to. For full list of options see
P816 in Chapter 5 Parameter Guide.

P823
Totaliser Multiplier

4 = *1

Sets the factor by which the calculated
volume will be divided or multiplied by
before being displayed:
1 = /1000 2 = /100
3 = /10 4 = *1
5 = *10 6 = *100
7 = *1,000 8 = *10,000
9 = *100,000 10 = *1,000,000

The remaining parameters required to finalise the setup of your application
will follow on immediately from the above. These parameters relate to
details required to carry out the calculation for flow and will be dependent
on the Primary Measuring Device chosen and the method of calculation
chosen, please enter values for the parameters concerned as requested.

PARAMETER

DEFAULT

DESCRIPTION

P705
Max flow

0.00

When requested enter the known maximum
flow rate, in units of volume (P706) and Time
(P707) which occurs at maximum head (P704)

P710
Dimension A

0

When requested, enter, in measurement units
(P104) the required dimension.

P711
Dimension B

0

When requested, enter, in measurement units
(P104) the required dimension.

P712
Dimension C

0

When requested, enter, in measurement units
(P104) the required dimension.

P713
Dimension D

0

When requested, enter, in measurement units
(P104) the required dimension.

P717
Exponent

Dependent
on chosen
PMD

Where available the unit will automatically
enter the default exponent value for the PMD
chosen, but this can be changed if required.
When P700 = 7 (Other), enter the exponent
value as defined by the manufacturer of the
PMD.

P718
K Factor

Enter the ‘K’ factor for the PMD. Obtained from
the manufacturer’s specifications

PULSAR MEASUREMENT

75

For More Options Hit Enter

PARAMETER

DEFAULT

DESCRIPTION

P213 / P214
Relay 1 ON/OFF
setpoints

Depends on
application

Set required Alarm Setpoints.

P223 / P224
Relay 2 ON/OFF
setpoints

Depends on
application

Set required Alarm Setpoints.

P233 / P234
Relay 3 ON/OFF
setpoints

Depends on
application

Set required Alarm Setpoints.

P243 / P244
Relay 4 ON/OFF
setpoints

Depends on
application

Set required Alarm Setpoints.

P253 / P254
Relay 5 ON/OFF
setpoints

Depends on
application

Set required Alarm Setpoints.

P263 / P264
Relay 5 ON/OFF

setpoints

Depends on
application

Set required Alarm Setpoints.

P708
Flow Decimal

2

Sets the number of decimal points required in
the flow rate display.

P709
Flow cut off

5%

Enter, as a percentage maximum flow. The
minimum flow rate to be added to the totaliser.

P830
mA Out range

2 = 4 -20mA

What the mA output uses for the range.
0= Off, 1= 0 to 20 mA, 2= 4 to 20 mA, 3= 20 to
0 mA, 4= 20 to 4 mA.

P870
Fill Damping

10m/min

Rate of maximum fill rate (set above the actual
fill rate of the vessel)

P871
Empty Damping

10m/min

Rate of maximum empty rate (set above the
actual empty rate of the vessel)

ULTRA TWIN INSTRUCTION MANUAL

76

The default values used for determining the relay setpoints, when setting
Alarm relays, via the Quick Setup menu are entered as a % of span and are
as follows.

RELAY

FUNCTION

RELAY ID

ON

SETPOINT

OFF

SETPOINT

Alarm

HiHi

90%

85%

Alarm

High

85%

80%

Alarm

Low

10%

15%

Alarm

LoLo

5%

10%

Important Notice

When using the Quick Setup Menu relays will be allocated to the point of
measurement you are currently setting up and the availability of relays will
depend on the number of relays used when setting up the previous point
of measurement via the Quick Setup Menu for that point.

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77

Exponential Devices

If the primary measuring device is a simple exponential device, then an
exponent value is required. The Ultra win will automatically enter the
exponent value for the device chosen as detailed in the table below:

EXPONENT TYPE

PMD SHAPE EXAMPLE

EXPONENT (P717)

Suppressed Rectangular
Weir
(Without end contractions)

1.50, automatically set by the
unit.

Cipolletti (Trapezoidal)
Weir

1.50, automatically set by the
unit.

Venturi Flume

1.50, automatically set by the
unit.

Parshall Flume

Automatically calculated
according to the throat size.

Leopold Lagco Flume

1.55

V-Notch Weir

2.50

Other

As per manufacturer

Value to be set as required.

Contracted Rectangular
Weir
(With end contractions)

1.50

ULTRA TWIN INSTRUCTION MANUAL

78

Point of Measurement

The transducer must be above the maximum head P704 by at least the
near blanking distance P107.

For Suppressed/Contracted Rectangular, Trapezoidal and V-notch, weirs,
the head is measured upstream at a minimum distance of 3 times
maximum head from the weir plate to ensure the surface of the liquid is not
affected by turbulence or drawdown. (See DRWG. 1)

In the case of a Venturi flume the point of measurement should be 150 mm
upstream from the beginning of the converging section and for a Parshall
flume 2/3 the length of the converging section upstream of the throat
section. (See DRWG 2 and 3).

3 x Hmax
minimum

FLOW (q)

DRWG. 1

DRWG. 2

DRWG. 3

FLOW (q)

FLOW (q)

VENTURI FLUME

PARSHALL FLUME

PULSAR MEASUREMENT

79

For a Leopold Lagco flume the head is measured at a point upstream of
the beginning of the converging section as detailed in the table below. (See
DRWG 4).

FLUME SIZE

POINT OF MEASUREMENT

mm

inches

mm

inches

100 - 305

4 – 12 25

1.0

380

15 32

1.3

455

18 38

1.5

530

21 44

1.8

610

24 51

2.1

760

30 64

2.5

915

36 76

3.0

1065

42 89

3.5

1220

48 102

4.0

1370

54 114

4.5

1520

60 127

5.0

1675

66 140

5.5

1830

72 152

6.0

When any Other device is chosen please consult the manufacturer of the
device for details of where the point of measurement should be located but
ensure that it is chosen such that the surface of the liquid is not affected by
turbulence or drawdown.

FLOW (q)

THROAT

DIVERGING

CONVERGING

TRANSDUCER MOUNTED
MIN. BLANKING DISTANCE
(P107) ABOVE MAX. HEAD

POINT OF MEASUREMENT

DRWG. 4

ULTRA TWIN INSTRUCTION MANUAL

80

Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula (s) as follows:

EXPONENT TYPE

FORMULA

EXPONENT

K FACTOR

Suppressed
Rectangular Weir
(Without end
contractions)

Q = KLh*
Where:
Q=Flow
K=K Factor
L=Crest length of weir
h=head
*=exponent

1.50
Automatically
selected by the
Ultra Twin

Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.

Cipolletti
(Trapezoidal Weir)

Q = KLh*
Where:
Q=Flow
K=K Factor
L=Crest length of weir
h=head
*=exponent

1.50
Automatically
selected by the
Ultra Twin

Automatically
calculated,
dependent on
measurement,
flow and time
units chosen

Venturi Flume

Q=Kh*
Where:
Q=Flow
K=K Factor
h=head
*=exponent

1.50
Automatically
selected by the
Ultra Twin

Enter value of
K Factor (P718)
as required

Parshall Flume

Q=Kh*
Where:
Q=Flow
K=K Factor
h=head
*=exponent

Automatically
calculated,
dependent on
throat size
(P719)

Automatically
calculated,
dependent on
measurement,
flow and time
units chosen

PULSAR MEASUREMENT

81

EXPONENT TYPE

FORMULA

EXPONENT

K FACTOR

Leopold Lagco
Flume

Q=KD

0.0953hx

Where:
Q =Flow
K=K factor D=pipe

diameter h=head
*=exponent

1.55
Automatically
selected by the
Ultra Twin

Automatically
calculated,
dependent on
measurement,
flow and time
units chosen

V-Notch Weir

Q=Kh

x

Where:
Q =Flow
K=K factor
h=head
*=exponent

2.50
Automatically
selected by the
Ultra Twin

Automatically
calculated,
dependent on
measurement
flow and time
units chosen.

Other

Q=Kh*

Enter value as
required

Enter value as
required

Contracted
Rectangular Weir
(With end
contractions)

Q=K(L-0.2*h)h*
Where:
Q=Flow
K=K Factor
L=Crest length of weir
H=head

x

=exponent

1.50
Automatically
selected by the
Ultra Twin

Automatically
calculated,
dependent on
measurement
flow and time
units chosen.

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q = q

cal

(h/h

cal

)x

Where:

q = flowrate

q

cal

= flowrate at maximum head (705)

h = head

h

cal

= maximum head (P704)

x = exponent (determined as in absolute calculation above)

ULTRA TWIN INSTRUCTION MANUAL

82

Example 1 ‘V’ Notch Weir

In this example, it is required to calculate the flow through a Simple
Exponential Device, which on this occasion is a V-Notch Weir. Ratiometric
calculation will be used, to use the customers declared maximum flow, there
is no requirement for alarms and the flow rate is to be displayed in
litres/second. The totaliser is to record the flow in cubic metres but is not to
be displayed during RUN.

This application is to be assigned to point 1 (Transducer 1).

The distance from the end of the transducer horn (dB Mach 3) to zero flow
(P1-105) is 1 metre and max head (P71-04) is 0.4 metres, maximum flow
(P1-705) is known to be 96.5 litres/second.

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83

To program the Ultra Twin for Example 1 V-Notch Weir by using the Quick
Setup menu proceed as follows. If required access the Program Mode, key
in the passcode 1997 and press ENTER.

Using the ‘right’ arrow key, go to the Quick Setup menu press ENTER and
as prompted, by the questions, select the relevant option and press ENTER.

Programming is now complete, and the unit can now be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to Run Mode.

QUESTION

OPTION

Application

3 = Flow

PMD Type

1 = Exponent

Exponent

6 = V-Notch

Calculation

2 = Ratiometric

No. of alarms

0 = No alarms

Xducer

1 = dB Mach3

Volume units (P1-706)

1 = Litres

Time units (P1-707)

1 = Per second

Measurement units (P*104)

1 = metres

Empty Level (P1-105)

1.00 metres

Minimum head (P1-703)

0.00 metres

Maximum head (P1-704)

0.40 metres

Totaliser Alloc. (P1-824)

1 = On

Aux. Mode (P1-815)

2 = Level

Aux Source (P1-816)

0 = Off

Totaliser multiplier

7 = 1,000

Max flow

96.5

ULTRA TWIN INSTRUCTION MANUAL

84

BS3680 Flumes (P700 = 2)

Point of Measurement

The transducer must be above the maximum head P704 by at least the
near blanking distance P107.

For a Rectangular and U-throated flume, the head is measured at 3 to 4

times the maximum head upstream from the beginning of the converging
section, to ensure the surface of the liquid is not affected by turbulence.

(See DRWG 6)

3-4 x hmax

DRWG. 6

THROAT LENGTH

DIM C (P712)

DIM A (P710)

APPROACH WIDTH

DIM B (P711)

THROAT WIDTH/DIA.

FLOW (q)

BS3680 FLUME

PULSAR MEASUREMENT

85

Rectangular Flume Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = (2/3)

1.5gn0.5

CsCvCdbh

1.5

Where:

q = flowrate
gn = gravitational acceleration (nominal value = 980.66 cm/s2)

Cs = shape coefficient (value = 1)
Cv = velocity coefficient calculated by Ultra Twin (P721)
Cd = discharge coefficient calculated by Ultra Twin (P722)
b = throat width P711

h = head

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q= q

cal(Cv/Cvcal

)(Cd/C

dcal

)(h/h

cal

)

1.5

Where:

q = flowrate

q

cal

= flowrate at maximum head P705

Cv = velocity coefficient calculated by Ultra Twin (P721)

C

vcal

= velocity coefficient at maximum head

Cd = discharge coefficient calculated by Ultra Twin (P722)
C

dcal

= discharge coefficient at maximum head

h = head

h

cal

= maximum head P704

ULTRA TWIN INSTRUCTION MANUAL

86

U-Throated Flume Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = (2/3)

1.5

g

n

0.5

CuCvCdbh

1.5

Where:

q = flowrate
gn = gravitational acceleration, (nominal value = 980.66 cm/s2)
h = head

Cu= shape coefficient calculated by Ultra Twin (P724)
Cv = velocity coefficient calculated by Ultra Twin (P721)
Cd = discharge coefficient calculated by Ultra Twin (P722)
b = throat width P711

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula:

q= q

cal(Cv/Cvcal

)(Cd/C

dcal

)(Cu/C

ucal

)(h/h

cal

)

1.5

Where:

q = flowrate

q

cal

= flowrate at maximum head P705

Cv = velocity coefficient calculated by Ultra Twin (P721)

Cv

cal

= velocity coefficient at maximum head

Cd = discharge coefficient calculated by Ultra Twin (P722)
Cd

cal

= discharge coefficient at maximum head

Cu = shape coefficient P724
Cu

cal

= shape coefficient at maximum head

h = head h

cal

= maximum head P704

PULSAR MEASUREMENT

87

Example 2 BS3680 U-Throated Flume

In this example, it is required to calculate to BS3680 the flow through a U­Throated Flume without any hump. Absolute calculation will be used, and
there is a requirement for an alarm to indicate a low flow condition which
will be set to relay 1. The flow rate is to be displayed in cubic meters/hour
and the totaliser is also to record the flow in cubic metres, the resettable
totaliser is to be displayed during RUN.

The application is to be assigned to point 2 (Transducer 2).

The distance from the end of the transducer horn (dB Mach3) or face of the
transducer to zero flow (P2-105) is 1 metre and max head (P2-704) is 0.4
metres, maximum flow(P2-705) will be calculated by the Ultra Twin as

725.17 cubic metres/hour.

The dimensions of the flume are as follows:

Approach Channel diameter (Dim “A”) P2-710 = 0.7m
Throat diameter (Dim “B”) P2-711 = 0.5m
Throat length (Dim “C”) P2-712 = 1m

ULTRA TWIN INSTRUCTION MANUAL

88

To program the Ultra Twin for Example 2 BS3680 U-Throated Flume by
using the Quick Setup menu proceed as follows. If required access the
Program Mode, key in the passcode 1997 and press ENTER. Using the
‘right’ arrow key, go to the Quick Setup menu press ENTER and as
prompted, select the relevant option and press ENTER.

QUESTION

OPTION

Application

3 = Flow

PMD Type

2 = 3680 Flume

3680 Flumes

3 = U-Throat

Calculation

1 = Absolute

No. of alarms

1 = 1 Alarm

Type alarm 1

2 = Low

Alarm No.1

1 = Set to relay 1

Transducer (P2-101)

1 = dB Mach3

Volume units (P2-706)

2 = Cubic metres

Time Units (P2-707)

4 = Per hour

Measurement units (P*104)

1 = Metres

Empty level (P2-105)

1.00m

Minimum head (P2-703)

0.00m

Maximum head (P2-704)

0.40m

Totaliser Alloc. (P2-824)

1 = On

Aux. Mode (P2-815)

1 = Yes

Aux Source (P2-816)

1 = Point 1

Totaliser multiplier (P2-823)

7 = 1,000

Approach dia. (Dim A) (P2-710)

0.70m

Throat dia. (Dim B) (P2-711)

0.50m

Throat length (Dim C) (P2-712)

1.00m

Programming is now complete, and the unit can now be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to Run Mode.

Important Notice

If relay setpoints do not meet the exact requirements of the application, they can

be modified to suit by pressing ENTER when, “For More Options Hit Enter”, is

displayed, and entering new values to relay setpoints as required. Alternatively,
access the setpoints by the main menu system or directly accessing the parameters.

PULSAR MEASUREMENT

89

BS3680 Weirs (P700 = 3)

Point of Measurement

The transducer must be above the maximum head P704 by at least the
near blanking distance P107.

For a Rectangular and V-notch weir, the head is measured at a point 4 to 5
times the maximum head upstream from the weir plate, to ensure the
surface of the liquid is not affected by turbulence or drawdown. (See DRWG

7)

Rectangular Weir Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = Ce 2/3(2gn)

0.5

beh

e

1.5

Where:
q = flowrate
Ce = discharge coefficient calculated by Ultra Twin (P723)

gn = gravitational acceleration (nominal value = 980.66 cm/s2)
be =effective approach width where b is approach width (Dim “A”) P710
he = effective head

4-5 x hmax
minimum

DRWG. 7

BS3680 WEIR

ULTRA TWIN INSTRUCTION MANUAL

90

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q= q

calCe/Cecal(he/hecal

)

1.5

Where:
q = flowrate

q

cal

= flowrate at maximum head P705

Ce = discharge coefficient calculated by Ultra Twin (P723)

Ce

cal

= discharge coefficient at maximum head
he = effective head
he

cal

= effective head at maximum head

V-Notch Weir Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = Ce8/15tan(theta/2) (2gn)

0.5h2.5

Where:

q = flowrate
Ce = discharge coefficient calculated by the Ultra Twin (P723)
theta = V-notch angle
gn = gravitational acceleration (nominal value = 980.66 cm/s2)
h = head

The Ultra Twin pre-sets the angle (theta) on selection of the chosen device
this angle is 90° for a BS 3680 full 90°V notch weir, 53° 8 minutes in the
case of the BS3680 half 90°V notch weir and 28° 4 minutes in the case of
the BS3680 quarter 90°V notch.

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q = q

calCe

(h)/Ce(h

cal

)(h/h

cal

)

2.5

Where:

q = flowrate

q

cal

= flowrate at maximum head P705

Ce(h) = discharge coefficient for head
Ce(h

cal

) = discharge coefficient for maximum head

h = head

h

cal

= maximum head P704

PULSAR MEASUREMENT

91

Example 3 BS3680 Rectangular Weir

In this example, it is required to calculate to the flow through a BS3680
Rectangular weir. Absolute calculation will be used, and there is a
requirement for an alarm to indicate a high flow condition to be set to relay

3. The flow rate is required to be displayed in litres/minute and the totaliser
is to record the flow in cubic metres, the resettable totaliser is to be
displayed during RUN.

This application is to be assigned to point 1 (Transducer 1).

The distance from the end of the transducer horn to zero flow (P105) is 1
metre and max head (P704) is 0.4 metres, maximum flow (P705).

Approach width (Dim “A”) P710 = 0.5 m
Crest width (Dim “B”) P711 = 0.3 m
Crest Height (Dim “C”) P712 = 0.3 m

ULTRA TWIN INSTRUCTION MANUAL

92

To program the Ultra Twin for Example 3 BS3680 Weir by using the Quick
Setup menu proceed as follows. If required access the Program Mode, key
in the passcode 1997 and press ENTER.

Using the ‘right’ arrow key, go to the Quick Setup menu press ENTER and
as prompted, by the questions, select the relevant option and press ENTER.

QUESTION

OPTION

Application

3 = Flow

PMD Type

2 = 3680 Weir

3680 Flumes

1 = Rectangular

Calculation

1 = Absolute

No. of alarms

1 = 1 Alarm

Type alarm 1

1 = High

Alarm No.1

3 = Set to relay 3

Transducer (P1-101)

1 = dB Mach3

Volume units (P1-706)

1 = Litres

Time Units (P2-707)

1 = Per Second

Measurement units (P*104)

1 = Metres

Empty level (P1-105)

1.00m

Minimum head (P1-703)

0.00m

Maximum head (P1-704)

0.40m

Totaliser Alloc. (P1-824)

1 = Point 1

Aux. Mode (P1-815)

7 = Totaliser

Aux Source (P1-816)

1 = Point 1

Totaliser multiplier (P1-823)

7 = 1,000

Approach dia. (Dim A) (P1-710)

0.70m

Throat dia. (Dim B) (P1-711)

0.50m

Throat length (Dim C) (P1-712)

1.00m

Programming is now complete, and the unit can now be returned to the run
mode, press CANCEL until Run Mode? Is displayed on the LCD press

ENTER, and the Ultra Twin will return to Run Mode.

Important Notice

If relay setpoints do not meet the exact requirements of the application, they can

be modified to suit by pressing ENTER when, “For More Options Hit Enter”, is

displayed, and entering new values to relay setpoints as required. Alternatively,
access the setpoints by the main menu system or directly accessing the parameters.

PULSAR MEASUREMENT

93

BS3680 Rectangular Broad Crested Weir

Point of Measurement

The transducer must be above the maximum head P704 by at least the
near blanking distance P107.

The head is measured at a point 3 to 4 times the maximum head upstream
from the weir crest, to ensure the surface of the liquid is not affected by
turbulence or drawdown.

Rectangular Broad Crested Weir Calculations

Calculations
Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = (2/3)

1.5

Ceb(gh3)

0.5

Where:

q = flowrate
Ce = discharge coefficient calculated by Ultra Twin P723
b = approach width P710
g = gravitational acceleration (nominal value = 980.66 cm/s2)
h = head

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94

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q= q

calCe/Cecal(he/hecal

)

1.5

Where:
q = flowrate

q

cal

= flowrate at maximum head P705

Ce = discharge coefficient calculated by Ultra Twin P723

Ce

cal

= discharge coefficient at maximum head
he = effective head
he

cal

= effective head at maximum head

PULSAR MEASUREMENT

95

Special Devices

Point of Measurement

The transducer must be above the maximum head P704 by at least the
near blanking distance P107.

In the case of a Palmer Bowlus flume the point of head measurement
should be half the value of Dim “A” P710 upstream of the device.

For a H-Flume the head measurement is taken at a point downstream from
the flume entrance as detailed in the table below:

FLUME SIZE-DIM A

(P710)

POINT OF MEASUREMENT

cm

feet

cm

inches

15.25

0.5

4.7

1.88

23.00

0.75

6.7

2.69

30.05

1.0

9.1

3.63

45.70

1.5

13.5

5.378

61.00

2.0

17.9

7.19

76.20

2.5

22.5

9.00

91.45

3.0

27.2

10.88

137.15

4.5

40.5

16.19

V-notch angle weirs, the head is measured upstream of the weir plate at a
minimum distance of 3 times maximum head to ensure the surface of the
liquid is not affected by turbulence or drawdown. See Exponential devices,
above, for further details.

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96

Palmer Bowlus and H-Flume Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = f(h)

Where:

q = flowrate
f = is an 8th degree polynomial solution for h (head)

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q= q

cal

f(h)/f(h

cal

)

Where:

q = flowrate
q

cal

= flowrate at maximum head P705
f(h) = a polynomial solution for h (head)
f(h

cal

) = a polynomial solution for h

cal

(maximum head)

V-Notch Angle Weir (Non-BS 3680) Calculations

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = Ce 8/15 tan (theta/2)(2gn)

0.5

(h = kh)

2.5

Where: q = flowrate

Ce = discharge coefficient calculated by Ultra Twin (P723)
theta = V-notch angle
gn = gravitational acceleration
h = head
kh = compensated head

Ratiometric

If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q= q

cal

(h+kh/h

cal

+kh)

2.5

Where: q = flowrate

q

cal

= flowrate at maximum head P705

h = head
kh = compensated head

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97

Universal Calculations (P700=6)

Point of Measurement

The transducer must be above the maximum head P704 by at least the
near blanking distance P107.
For all Universal calculation applications, the point at which the head is
measured should be chosen such that the surface of the liquid is not
affected by turbulence.

Absolute

If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = q(h)
Where: q = flowrate

q(h) = flowrate for head

The desired number of Breakpoints, (P730 - P793) are to be entered in pairs
in values of head and corresponding flow. (Minimum of 2 pairs of
Breakpoints is required).

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98

CHAPTER 5 PARAMETER GUIDE

This chapter describes all the parameters in your Ultra Twin 140, as they
appear in the menu system.

Menu System

Shown below is a set of charts to show you how all the various functions and
features can be found using the menu system.

For further details and a full description of all parameters refer to the
Parameter Listings and Descriptions section of this chapter.

Top Level Menu

Quick Setup

Application

Relays

Pump

Advanced

Digital
Inputs

Data Logs

Volume

P100 = 6

mA 2

Output

mA 1

Output

Display

Compensation

Stability

System

Test

Device
Comm

Echo

Processing

OCM

P100 = 4 or 5

PULSAR MEASUREMENT

99

Application Menu

P1 & P2

System Units

P1 P2

Operation

P1 & P2

Distances

P1*04

Measurement

Units

P1-105 P2-105

Empty Distance

P1-100 P2-100

Mode

P1-101 P2-101

Transducer

P1-102 P2-102

Material

P1-106 P2-106

Span

P1-107 P2-107

Near Blanking

P1-108 P2-108

Far Blanking

Important Notice

In the following parameters, * denotes the point of measurement being
used (* = parameter selectable in Point 1 and/or in Point 2).
All menu options are the same for Point 1 and Point 2. Measurement points
can be “toggled” by pressing to change from point 1 to point 2 to
access parameters on each point.

ULTRA TWIN INSTRUCTION MANUAL

100

Relays Menu

Relay 1

P*210

Type

P*211

Function

P*212

Alarm ID

or

Pump

Group

P*214

Set 2

P*213

Set 1

P*215

Set 3

As

Required

P*216

Allocat.

P*217

Closures

P*218

Fail Safe

P*219

R1

Max.Rate

If

P210=2

Relay 2

Relay 3

Relay 4

Relay 5

Relay 6

P*220

Type

P*230

Type

P*240

Type

P*250

Type

P*260

Type

P*221

Function

P*231

Function

P*241

Function

P*251

Function

P*261

Function

P*222

Alarm ID

or

Pump

Group

*P232

Alarm ID

or

Pump

Group

P*242

Alarm ID

or

Pump

Group

P*252

Alarm ID

or

Pump

Group

P*262

Alarm ID

or

Pump

Group

P*223

Set 1

*P233

Set 1

P*243

Set 1

P*253

Set 1

P*263

Set 1

P*224

Set 2

P*234

Set 2

P*244

Set 2

P*254

Set 2

P*264

Set 2

P*225

Set 3

As

Required

P*235

Set 3

As

Required

P*245

Set 3

As

Required

P*255

Set 3

As

Required

P*265

Set 3

As

Required

P*226

Allocat.

P*236

Allocat.

P*246

Allocat.

P*256

Allocat.

P*266

Allocat.

P*227

Closures

P*237

Closures

P*247

Closures

P*257

Closures

P*267

Closures

P*228

Fail Safe

P*238

Fail Safe

P*248

Fail Safe

P*258

Fail Safe

P*268

Fail Safe

P*249

R4

Max.Rate

If

P240=2

P*259

R5

Max.Rate

If

P250=2

P*269

R6

Max.Rate

If

P260=2

P*229

R2

Max.Rate

If

P220=2

P*239

R3

Max.Rate

If

P230=2