SludgeFinder 2
Instruction Manual
2
PULSAR MEASUREMENT
3
SludgeFinder 2 (SIXTH EDITION REV 1)
February 2021
Part Number M-920-0-006-1P
COPYRIGHT
© Pulsar Measurement, 2009 -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. Note: For a VT10 or ST10 transducer the period of time is 1 year from date of
delivery.
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 SludgeFinder 2 shown on the cover of this manual is used for illustrative purposes only and
may not be representative of the actual SludgeFinder 2 supplied.
CONTACT
For technical support, please contact:
Europe: supporteurope@pulsarmeasurement.com
Outside Europe: supportnorthamerica@pulsarmeasurement.com
If you have any comments or suggestions about this product, please contact:
Europe: europe@pulsarmeasurement.com
Outside Europe: northamerica@pulsarmeasurement.com
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
4
CONTENTS
Chapter 1: Start Here… ........................................................................................................... 8
About this Manual ............................................................................................................... 8
About the SludgeFinder 2................................................................................................. 9
Applications ......................................................................................................................... 10
Functional Description .................................................................................................... 11
Product Specification ....................................................................................................... 12
EU Certificate of Conformity ......................................................................................... 14
Chapter 2 Installation ........................................................................................................... 15
Unpacking ............................................................................................................................ 15
Power Supply Requirements......................................................................................... 15
Location ................................................................................................................................ 16
Dimensions .......................................................................................................................... 17
Wall Mount .......................................................................................................................... 17
VT10 (Sludge) Transducer .............................................................................................. 19
ST10 (Sludge) Transducer .............................................................................................. 20
Terminal connection details .......................................................................................... 21
Terminal Connections ...................................................................................................... 21
dB (Air) Transducer ........................................................................................................... 22
ATEX ....................................................................................................................................... 22
VT & ST (Sludge) Transducer........................................................................................ 24
Wall mount Enclosure ..................................................................................................... 25
Preparation for Operation ............................................................................................. 27
Maintenance ....................................................................................................................... 27
VT & ST (Sludge)Transducer Maintenance. ............................................................ 27
Transducer Installation Options .................................................................................. 30
Transceiver Mounting...................................................................................................... 37
Chapter 3 Pulsar Radio Telemetry System ................................................................... 40
Verifying Communications. ........................................................................................... 44
Radio Telemetry Features. ............................................................................................. 46
Pulsar Non-Integrated Point – Point Radio Telemetry. ...................................... 46
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Receiver and Transmitter Dimensional Details. ..................................................... 47
Gateway and Node wiring details .............................................................................. 48
Analogue and Digital I/O ............................................................................................... 49
Installation Tips .................................................................................................................. 50
Bridge Integrator-Radio Schematic ........................................................................... 53
Specifications ...................................................................................................................... 54
How To Use Your SludgeFinder 2 ................................................................................... 55
Operating the Controls ................................................................................................... 55
Run Mode ............................................................................................................................. 56
Program Mode ................................................................................................................... 59
How to Access Program Mode .................................................................................... 59
Hot Keys ................................................................................................................................ 61
Menu Keys ........................................................................................................................... 62
Numeric Keys ...................................................................................................................... 63
Using the Menu System ................................................................................................. 64
Directly Editing Parameters ........................................................................................... 65
Test Mode ............................................................................................................................ 66
Using the Serial Interface ............................................................................................... 67
Parameter Defaults ........................................................................................................... 69
Chapter 4 Programming Guide ........................................................................................ 70
Measurements needed for Interface monitoring ................................................. 70
Example 1: Primary Settlement Sludge Interface monitoring ......................... 71
Example 2: Level Monitoring with High and Low Alarms on Point 2 ........... 73
Example 3: Using a Single Viper Transducer to Measure 2 Different
Interface Levels. ................................................................................................................. 76
Example 4: Setting the Unit to Alarm on Hi-Floc Levels .................................... 77
High Floc Alarm ................................................................................................................. 77
Chapter 6 Menu System and Parameter Guide ......................................................... 79
Top Level Menu ................................................................................................................. 79
Application Menu .............................................................................................................. 79
SLUDGEFINDER 2 INSTRUCTION MANUAL
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Relays Menu ........................................................................................................................ 81
Floc Alarm Menu ............................................................................................................... 82
Data Logs Menu ................................................................................................................ 83
Display Menu ...................................................................................................................... 84
mA Output Menu .............................................................................................................. 85
Compensation Menu ....................................................................................................... 86
Stability Menu .................................................................................................................... 86
Echo Processing Menu .................................................................................................... 87
System Menu ...................................................................................................................... 88
Device Comm Menu ........................................................................................................ 90
Test Menu ............................................................................................................................ 91
Chapter 7 Parameter Listing and Description ............................................................ 92
Application Parameters................................................................................................... 92
Global ..................................................................................................................................... 95
Relay Parameters ............................................................................................................... 96
Alarms .................................................................................................................................... 98
Control ................................................................................................................................. 101
Miscellaneous ................................................................................................................... 103
Common Parameters ..................................................................................................... 104
Floc Alarm Parameters .................................................................................................. 105
Service Interval Alarm Parameters............................................................................ 106
Data Log Parameters ..................................................................................................... 106
Display Parameters ......................................................................................................... 107
Failsafe ................................................................................................................................. 108
mA Out 1 / mA Out 2 Parameters ............................................................................ 109
Setpoint ............................................................................................................................... 110
Compensation Parameters .......................................................................................... 112
Offset.................................................................................................................................... 112
Temperature ...................................................................................................................... 112
Stability Parameters ....................................................................................................... 113
Damping ............................................................................................................................. 113
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Filters .................................................................................................................................... 113
Echo Processing Parameters ....................................................................................... 114
Transducer 1 Status ........................................................................................................ 114
Transducer 2 Status ........................................................................................................ 115
System Parameters ......................................................................................................... 116
Passcode ............................................................................................................................. 116
Backup ................................................................................................................................. 116
System Information ........................................................................................................ 117
Date & Time ...................................................................................................................... 118
LED Colour ......................................................................................................................... 118
Watchdog ........................................................................................................................... 119
Daylight Saving Time ..................................................................................................... 120
Device Comm. .................................................................................................................. 124
RS232 Set Up .................................................................................................................... 124
RS 485 Set Up ................................................................................................................... 124
Test Parameters ............................................................................................................... 125
Simulation .......................................................................................................................... 125
Hardware ............................................................................................................................ 126
Chapter 8 Troubleshooting .............................................................................................. 128
Chapter 9 Disposal .............................................................................................................. 129
Notes ........................................................................................................................................ 130
SLUDGEFINDER 2 INSTRUCTION MANUAL
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CHAPTER 1: START HERE…
Congratulations on your purchase of a Pulsar Sludge Finder 2. This quality
system has been developed over many years and represents the latest in
high technology ultrasonic sludge monitoring.
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 thi s icon t h rougho u t y o ur Pul s a r Mea s ureme n t manual
to fin d helpfu l infor m ation a nd an s w ers to f reque n tly as k ed
ques t ions.
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 SludgeFinder 2
The single Sludge Finder 2 unit provides dual point level sensing in liquids
and/or air. It is easily installed, with conduit entry on the unit via 5 x 20mm
Knockouts and 1 x 16mm knockout.
Outstanding stability, accuracy, and repeatability. Sophisticated algorithms
for echo extraction utilizing powerful Digital Signal Processing (DSP)
microprocessors.
The system has superior performance based on current leading-edge
technology and modern design procedures.
Two independent transducer channels with the option of combining
submersible and air transducers.
Two fully adjustable 4-20 mA outputs, six fully programmable SPDT status
relays.
RS232 and RS485 communications ports for multiple unit installations.
Radio communications for remote 4-20mA Indication (optional).
All these features and more plus the ease of programming, make this
instrument the number one choice for interface level measurement in
liquids.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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Applications
The Sludge Finder 2 is designed to monitor the levels of materials in various
processes and to regulate the control loops, start and stop motors, and
initiate events based on measured process conditions.
Some applications for the units are listed below:
• Water & Wastewater Treatment Clarifiers
• Water & Wastewater Gravity & DAF Thickeners
• Raw Water Clarifiers
• Sumps, lagoons, settling ponds.
• Industrial Process Thickeners
• Salt Brine Tanks
• Material Inventory Tanks
• Process Thickeners
• Dewatering/Hydro Bins
• Pyrite Holding/Transfer Tanks
• FGD Thickeners
• Surge & Settling Tanks
• Oil/Water separators
• SBR Tanks
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Functional Description
Sludge Finder 2 sends a transmit pulse to the transducer, which then emits a
high frequency ultrasonic sound wave perpendicular to the transducer face,
the returned echo is received by the Sludge Finder 2. The time taken to
receive the echo is measured and the distance from the transducer face to
the sludge interface is calculated.
The relays can be programmed to activate alarms, pump starters, or other
control equipment. There is an isolated 4-20 mA output for each of two
transducer channels that can be connected to a recorder or PLC to monitor
the sludge interface independently from that shown on the display. Finally,
there is an RS232 port, so that the Sludge Finder 2 can be operated remotely
by a PC or other equipment to download/upload parameters or view real
time echo traces.
Sludge Finder 2 can be programmed either by the built-in keypad, or by PC
via the RS 232 Serial Interface. 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 Sludge Finder 2
memory, in case an alternative set of parameters needs to be stored.
Six user definable control relays with individual setpoints and intelligent
performance logging software features ensure maximum control versatility.
The Pulsar Sludge Finder 2 ultrasonic sludge detector has been designed to
provide maintenance-free fit and forget performance.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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Product Specification
PHYSICAL
Wall Mount outside Dimensions
235 x 184 x 120mm (9.25 x 7.24 x 4.72”)
Weight
Nominal 1 kg (2.2lbs)
Enclosure Material/Description
Polycarbonate, flame resistant to UL94-5V
Cable entry detail
10 cable entry knockouts, 1 x M16 underside, 5 x M20,
4 PG11 at rear.
Transducer Cable Extensions
3-conductor 20AWG screened
dB series (Air)
Maximum Separation
3,280 ft (1,000m)
ENVIRONMENTAL
IP Rating (Fascia)
IP65, IP20 when open
Altitude
2000m maximum
Max. & min. temperature
(electronics)
-20 ºC to +50 ºC (-4ºF to 122ºF)
Flammable atmosphere approval
Safe area: compatible with approved dB transducers
(see transducer spec' sheet)
CE approval
See EU Declaration of Conformity
PERFORMANCE (WITH SLUDGE)
Accuracy
0.25% of the measured range or 1.181" (30 mm)
(whichever is greater)
Resolution
0.25% of the measured range or 0.394" (10 mm)
(whichever is greater)
Max. Range
32.808ft (10m)
Min. Range
0.984ft (0.3m)
Rate Response
Fully adjustable
OUTPUTS
Analogue Output
2 off Isolated (to 150V floating) output of 4-20 mA or
0-20 mA into 1k (user programmable and
adjustable) 0.1% resolution.
Digital Output
Half Duplex RS232
Volt free contacts, number, and
rating
6 form "C" (SPDT) rated at 5A at 115V AC
Display
192 x 128 pixel illuminated graphical display
Fully programmable display options Integral keypad
with menu navigation keys
Radio Modem (optional)
4 – 20mA using wireless exempt frequencies
Maximum range 1640ft (500m) line of site
Communication bus (optional)
RS485 Modbus RTU/ASCII or Profibus DPV1 (slave
device)
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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
Universal 100-240V ac 50-60 Hz,
dc 22 - 28V
20W maximum power (typically 11W)
Fuse
2A Slow blow
VIPER TRANSDUCER
Sensor body dimensions
78 x 195mm (3.07 x 7.67in)
Sensor Weight
Nominal 1.5kg (3.3lbs)
Sensor body material
Valox 357. Wiper blade – Stainless steel
Transducer cable extensions
2 twisted pair 0.5mm2 with overall screen
Maximum separation
200 m (656ft)
Max and min temperature
(electronics)
-20 ºC to +50 ºC (-4ºF to 122ºF)
IP Rating
IP68
Accuracy
0.25% of the measured range or 1.81in (30 mm)
(whichever is greater)
Resolution
0.25% of the measured range or 10 mm (whichever is
greater)
Max. range
10m (32.8ft)
Min. range
0.3m (0.98ft)
Min sludge density
0.5% concentration
Pulsar Measurement operates a policy of constant development and
improvement and reserve the right to amend technical details, as necessary.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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EU Certificate of Conformity
PULSAR MEASUREMENT
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CHAPTER 2 INSTALLATION
Unpacking
Power Supply Requirements
Sludge Finder 2 can operate from AC supply or from a DC battery. The AC is
supplied via a universal 100-200VAC transformer. The DC is 22-28V. In all
cases the Sludge Finder 2 will typically consume 11W of power, with a
maximum of 20W.
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.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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Location
The SludgeFinder 2 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 SludgeFinder 2 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 Sludge Finder 2 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.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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The full dimensions of the enclosure are as shown below:
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Cable entry
There are 6 cable gland knockouts on the base of the Sludge Finder 2 (5 x
M20, 1 x M16) and 4 on the rear (4 x 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.
VT10 (Sludge) Transducer
Important Information
Please note that the VT10 has a 1 year warranty period from the date of delivery
from Pulsar, if an issue arises with the item please contact your local Pulsar
distributor and return it to Pulsar within its warranty period.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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ST10 (Sludge) Transducer
1.5” BSP
BOTTOM
41 mm
1” BSP
78 mm
25 mm
65 mm
Important Information
Please note that the ST10 has a 1 year warranty period from the date of delivery
from Pulsar, if an issue arises with the item please contact your local Pulsar
distributor and return it to Pulsar within its warranty period.
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Terminal connection details
The normal strip is as detailed below. There is also a wiring diagram inside
the terminal access cover.
Terminal Connections
Power
Sludge Finder 2 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.
Wire the transducer to the Sludge Finder 2’s transducer terminals as follows:
VT & ST Sludge Transducers
Transducer 1
TERMINAL CONNECTION DETAILS
*Orange:
Motor
Red:
Power
White:
Signal
Black:
0 Volts
Green:
Screen
Terminal No.
37
38
39
40
40
Transducer 2
TERMINAL CONNECTION DETAILS
*Orange:
Motor
Red:
Power
White:
Signal
Black:
0 Volts
Green:
Screen
Terminal No.
41
42
43
44
44
*There is no motor connection for the ST10, please connect the other
cables for the ST10 as outlined in the tables above.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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dB (Air) Transducer
Transducer 1
TERMINAL CONNECTION DETAILS
Not
required
Red:
Power
White:
Signal
Black:
0 Volts
Green:
Screen
Terminal No.
N/A
38
39
40
40
Transducer 2
TERMINAL CONNECTION DETAILS
Not
required
Red:
Power
White:
Signal
Black:
0 Volts
Green:
Screen
Terminal No.
N/A
42
43
44
44
When installing a transducer in a hazardous area use an approved
transducer, from the Pulsar dB range, suitable for the proposed application.
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 Sludge Finder 2 controller.
For EEx ia (Zone 0) a transducer certified to Sira 02ATEX2103X is used,
which must be connected to the Sludge Finder 2 via an external Zener
barrier.
See transducer label for certification details.
Important Information
Please note that if the output of the ultrasonic transducers used with the Sludge
Finder 2 are capable of emitting sound pressure levels in excess of 85dBA (above
a reference sound pressure level of 20µPA), then the Sludge Finder 2 must be
located remote from the transducer such that a sound pressure level of 85dBA is
not exceeded when standing at the Sludge Finder 2 in the operator’s position.
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Relay Outputs
The six relays can be programmed for a variety of alarms or process control
functions. The relay contacts are all rated at 5A at 115V AC. All connections
should be such that the short circuit capacity of the circuits to which they are
connected, is limited by fuses rated such 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 .
RS2323 Serial Interface
If required, you can connect to the serial interface to operate your Sludge
Finder 2 remotely.
Important Information
Never operate the Sludge Finder 2 with terminal access exposed.
An external switch or circuit breaker should be installed near to the Sludge
Finder 2 to allow the supply to be removed during installation and maintenance.
In installations where the relay contacts have mains power connected, there
should be a means of isolating them from the Sludge Finder 2.
Interconnecting cables must be adequately insulated for IEC 664 Category II
installations. 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.
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.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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VT & ST (Sludge) Transducer
Locating the Sludge Transducer
• Position the transducer at a height within the tank such that it is fully
submerged at all times that measurements are required, typically the
face of the transducer should be 150mm below the normal water level.
Liquid temperature compensation will only function correctly if the
transducer is submerged at this level or below.
• Ensure an unobstructed path between the transducer and the bottom of
the tank. N.B. Rotating sub-surface rakes and scrapers, that pass beneath
the transducer, do not interfere with normal operation.
• Select a location that minimizes the presence of gas bubbles, high flow
and heavy solid concentration dynamics in the process liquid near or the
transducer.
• Typical installation in a round clarifier or thickener is 1/3 to 2/3 the
distance from the sidewall to the centre of the tank with transducer
mounted from the walkway safety railing.
• Typical installation in a rectangular clarifier or thickener is along the
length of the clarifier in the third of the tank nearest the sludge
discharge sump.
Installing the Transducer
• The transducer housing is designed to accept a 1-inch BSP female
threaded coupler for pipe or conduit. Feed the integral transducer cable
through the mounting pipe and tighten by hand until snug. CAUTION:
extreme over-tightening may crack the transducer housing.
• Position the transducer such that it is 150mm below the water surface
and the mounting pipe is perpendicular to the water surface. Secure the
mounting pipe in place with clamps to ensure that it is rigid.
• Flexible arm transducers assemblies are available and are required where
there is surface skimming equipment that passes the location of the
transducer. Rotate the transducer mounting pipe so that the integral
transducer shield contacts the skimmer arm squarely. Ensure that the
transducer moves freely away from the passing skimmer equipment.
• Optional transducer mounting brackets are available to extend the
mounting pipe away from its connection point at the handrail to provide
clearance from obstructions.
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• If desired, the transducer cable may be extended up to 200m. Install
transducer cables in grounded metal conduit. Do not run-in cable trays
or duct banks with variable frequency drives or other high voltage
sources.
• Air (dB) transducers should be installed and connected in accordance
with the installation instructions contained in the dB Transducer User
Guide.
Wall mount Enclosure
Locating the Sludge Finder 2 unit
• The unit may be located inside a building or it may be field-mounted.
• Locate the unit so that the maximum cable length to any transducer
does not exceed 200m.
• Avoid locating the processor near variable frequency drives or other
high voltage equipment or cables.
• Ensure that the Sludge Finder 2 controller 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.
• Ensure the mounting surface is vibration-free and the ambient
temperature is between -20ºC and 50ºC.
Installing the controller
• Mount the unit at a convenient height for viewing the control panel and
displays. Allow sufficient clearance around the unit for the door to swing
fully open for instrument service.
• Secure to a wall or panel using the mounting holes. Alternatively, attach
to a local handrail using the optional Integrator Mounting Assembly.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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PULSAR MEASUREMENT
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Preparation for Operation
Before switching on, check the following:
✓ The Sludge Finder 2 is mounted correctly and is in a ‘safe’ area.
✓ The power supply is correctly installed.
✓ The relays are connected correctly.
Maintenance
There are no user serviceable parts inside Sludge Finder 2, 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.
VT & ST (Sludge)Transducer Maintenance.
Procedure for the Removal of Transducers
From time to time, it may be necessary to remove the transducer for
cleaning or maintenance purposes, the following procedure is to ensure that
this is done carefully with regard for the health and safety of the operator
involved, and without damage to the transducer.
The transducer mounting bracket (option 1) is designed such that the
transducer can be removed without any parts being available to fall into the
application. Before attempting to remove the transducer for cleaning or
maintenance, the power to the unit should be disconnected.
The correct PPE should be worn to ensure you do not come into direct
contact with the wetted parts of the Sludge Finder 2 system, if in doubt
contact your site Health and Safety Officer. To remove the transducer,
loosen the retaining bolts on the end of the mounting brackets as shown in
fig.1 and lift the transducer conduit assembly onto the walkway. The conduit
is attached to the mounting assembly plate by means of a security chain so
that it cannot be dropped and lost into the application.
The transducer can then be safely inspected for damage or material fouling
and can be carefully cleaned with a damp cloth to remove any foreign
debris. Care should be taken not to move the wiper by hand as any
movement not under the power of the motor may damage the unit.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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IMPORTANT WARRANTY NOTICE:
THE ONE YEAR TRANSDUCER WARRANTY IS VOID IF
THE WIPER BLADE IS ROTATED BY HAND. THIS IS
DETRIMENTAL TO THE MOTOR GEAR DRIVE AND WILL
DAMAGE THE UNIT.
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The wiper arm on the VT10 will move twice every 20 mins as a default
setting, if the face of the transducer is dirty and you are unsure as to
whether or not the wiper is cleaning then place the transducer such that the
wiper movement will not foul on anything and use the appropriate function
key ( ) to force a wipe (see note below).
If it is necessary to replace the transducer, the following procedure should
be followed.
Disconnect the transducer wiring from the electronics as shown on page 15
and remove the transducer cable from the electronics enclosure.
The transducer is mounted onto the end of the conduit via its process fitting,
this should be carefully unscrewed in an anticlockwise direction. Make sure
the transducer is not dropped or knocked as this can damage the unit.
When replacing the transducer care must be taken not to over tighten the
unit as this can result in the transducer ‘ringing’. Hand tight is sufficient.
When the transducer is replaced into the application and the power reapplied the unit will re-initialise and after a short period of time depending
on the process conditions show the correct blanket reading.
Important Information
The function key will only initiate a wiper sweep on a VT transducer
related to the currently viewed point and will only operate in run mode on
the “Main” display. The function key will not initiate a wiper sweep if the
dual point view is displayed.
SLUDGEFINDER 2 INSTRUCTION MANUAL
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Transducer Installation Options
1. Stainless steel mounting plate.
PULSAR MEASUREMENT
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The mounting system shown above including the conduit is made from
stainless steel.
The mounting plate is attached to the (normally galvanised) handrail via two
hot dipped galvanised U-bolts, the U-bolts are then separated from the
mounting plate via robust cast plastic spacers.
This system ensures that there are no problems with dissimilar metal
reactions, and the entire mounting system should not suffer from
oxidisation/corrosion issues which can cause problems when performing
maintenance.
The above system is also available with an optional 2.3m length of Stainless
¾” conduit, with other lengths being available on request. The conduit can
be secured to the mounting bracket or the chain can be supplied welded to
the conduit for the customer to attached at a suitable point.
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Mounting Plate Dimensions
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Mounting Bracket (exploded view)
Note: the two arms holding the hinged conduit retainers are welded to the
mounting plate.
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Part Numbers
Stainless transducer mounting bracket assembly complete with security
chain and 2.5m ¾" stainless conduit.
Part Number 9200A0007
Stainless transducer mounting bracket assembly without chain or conduit.
Part Number 9200A0008
Flexible Arm Assembly
Part Number 9200A0001
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2. Budget Mounting Option.
This mounting system has galvanised parts and is designed to be a budget
option for transducer mounting.
In the picture shown above the security chain and flexible arm assembly are
optional.
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Mounting option 2, arm assembly
Part Numbers
Budget galvanised transducer mounting bracket complete with
security chain and 2.5m ¾" galvanized conduit.
Part Number 9200A0009
Budget galvanised transducer mounting bracket.
Part Number 9200A0010
Flexible Arm Assembly
Part Number 9200A0001
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Transceiver Mounting
The Sludge Finder 2 transceiver is mounted in an IP65 rated enclosure.
These enclosures are often situated out in the open on the walkways or
bridges of settlement tanks and are therefore very exposed to the elements.
We offer a metal enclosure like the one below to ensure that, if required, the
unit is not mounted in direct sunlight and is sheltered from any potential
exposure to water ingress via precipitation or the application itself.
A steel enclosure with optional mounting plate and brackets is
recommended as a suitable enclosure.
Dimensions: W x H x D: 400 mm x 400 mm x 200 mm are adequate.
Requirements: General protection of electrical and other equipment against
impact and the ingress of dust and liquids.
Example Spec
• Overall sheet steel construction.
• Epoxy powder coated to RAL7032.
• Earth points on enclosure body & door.
• IP55 protection as standard.
• Polyurethane gasket.
Note: Enclosure mounting equipment supplied and fitted by others to suit
local site conditions.
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Cabinet Mounting
If the Sludge Finder 2 transceiver is mounted into the steel cabinet, Pulsar
can offer the necessary metalwork to affix the cabinet to a bridge or walkway
as seen below. This includes 2 x slotted galvanised steel rails and 4 x U-bolt
fittings (customer specified diameter).
Any other required fittings in addition to the above must be purchased
separately by the installer.
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Part Numbers for Cabinet Assembly.
Sludge Finder 2 integrator enclosure complete with chassis plate and
mounting bracket.
Part Number 9200A0004
Sludge Finder 2 integrator enclosure complete with 5 x cable glands
installed, integrator fixed to the internally mounted chassis plate and
mounting brackets.
Part Number 9200A0005
Handrail installation kit for Sludge Finder 2 enclosure. Includes 2 x 2m
mounting rails and 4 x U-bolts (diameter to be customer specified)
Part Number 9200A0006
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CHAPTER 3 PULSAR RADIO TELEMETRY SYSTEM
Some Pulsar units may be fitted with an optional Radio Telemetry System.
This system cannot be retro fitted and must be purchased at the time of
ordering.
The system consists of a small transmitter board or ‘Node’ that is integrated
into the SF2 housing and a receiver or ‘Gateway’ that is placed in a suitable
location. The transmitter is pre-wired into the analogue output terminals
and three of the digital outputs as shown below.
TRANSMITTER (node) WIRING
The transmitter unit has two analogue outputs and two digital outputs.
Channel 1 is mA OUT 1. Channel 2 is mA OUT 2.
Relay 4 is DIG OUT 1. Relays 5 and 6 are DIG OUT 2
The mA output will be set by the user in the Application section of the
parameters to reflect the operational 4-20 mA output span of the
instrument.
The Relays should be programmed as follows.
Relay 5 should be set to be a Loss of Echo alarm, Relay 6 should be set to be
a Wiper fail. These outputs are wired in series to DIG 2 and are used to give
a Failure Output.
Relay 4 can be programmed as a customer preference for Hi or Lo alarm
output.
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RECEIVER (gateway) DX80
The Receiver unit is shown below.
The Receiver unit needs to be supplied with 10-30vdc.
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The Power Supply and output terminals are shown below.
The Power can be connected to either of the PWR and GND terminals.
10-30VDC
The Digital Output for Relay 4 (Hi or Lo level) is connected to DO1
The Digital Output for Relays 5 & 6 (Wiper Fail and LOE) is connected to
DO2
The Analogue Output for Channel 1 is connected to AO1
The Analogue Output for Channel 2 is connected to AO2
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The systems supplied by Pulsar are ‘paired’ and care should be taken to
ensure the right Receiver is installed with the appropriate Transmitter if
more than one system is in operation on the same site.
The receiver unit should be pre-set to 11 or greater, the transmitters are set
to 1 or greater, so for a transmitter address of, for example, 4 the receiver
will be 14 and so on. These are pre-set as the transmitter rotary dial are
difficult to access.
Receiver Specifications
Max distance between Transmitter & Receiver with a clear line of sight is
3km.
Frequency. 2.4 GHz
Enclosure. Polycarbonate IP67, NEMA 6.
Power. 10-30vdc consumption less than 1.4W at 24VDC
Temp. (electronics) -20 to +80 C
The left dial represents
the units of the device.
The right dial represents
the tens of the device.
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Verifying Communications.
After powering up, verify the device is communicating properly.
When testing the Gateway and Node, ensure all radios and antenna are at
least two metres apart or communications may fail.
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Enclosure Dimensions
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Radio Telemetry Features.
• Up to 48 repeaters can be used by upgrading to a ‘MULTIHOP’ receiver
vastly increasing the distance between transmitter and receiver.
• Transmissions are always secure due to ‘Frequency Hopping’
technology.
• Unlimited pairs can be used in the same location.
• Light, strong, compact, and easily fitted enclosure.
• Other options are available on request such as RS485 comms and Solar
Powered capability.
• 3km distance between Transmitter and Receiver, with clear line of sight.
Pulsar Non-Integrated Point – Point Radio Telemetry.
Pulsar also offer a non-integrated Radio Telemetry System that is available
to be retro fitted.
The unit offers 2 x 4-20 Analogue Output and 4 x Digital Output retransmission over 3km line of sight.
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Receiver and Transmitter Dimensional Details.
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48
Gateway and Node wiring details
Applying power to the DX70 Radio Devices.
Connect power to the Gateway and Node by connecting 10-30VDC directly
to the terminal block as shown below.
1 = 10-30VDC
2 = Ground
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Analogue and Digital I/O
The Pulsar units will be supplied already ‘bound’ and correctly addressed this
means they will only talk to each other and cannot be externally
interrogated.
When power is applied the units will show a solid green led and a flashing
yellow led that will indicate they are communicating and all is normal, as
shown below the speed of the flashing yellow led indicates the strength of
the signal between the devices.
TERMINATION
NODE
GATEWAY
TERMINATION
AI1
Analogue Input 1
Analogue Output 1
AO1
AI2
Analogue Input 2
Analogue Output 2
AO2
DI1
Digital Input 1
Digital Output 1
DO1
DI2
Digital Input 2
Digital Output 2
DO2
DI3
Digital Input 3
Digital Output 3
DO3
DI4
Digital Input 4
Digital Output 4
DO4
AI1
Analogue Input 1
Analogue Output 1
AO1
AI2
Analogue Input 2
Analogue Output 2
AO2
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Installation Tips
It is important to create a clear communication path.
Wireless comms can be hindered by radio interference and obstructions in
the path between the radio and receiver. To achieve the best performance
carefully consider the installation locations for the Gateways and Nodes,
select locations without obstructions in the pathway between them.
Increase the height of the Antenna.
Position the antenna vertically for optimal RF communication, if necessary,
change the height of the radio or antenna to improve reception. For outdoor
applications mounting the antenna on top of a pole or building may help to
achieve line of sight radio link.
Line of sight
No line of sight
Gateway
Node
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Be Aware of Seasonal Changes.
Seasonal changes may affect signal strength, leaves on trees that were
absent during a site survey can become a problem later in the year.
Gateway
Gateway
Node
Node
A good signal strength in winter does
not always mean you will get the same
signal strength the rest of the year.
During spring and summer, leaves may
block more of the radio signal.
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Further Antenna Installation Information.
It is very important that the Radio Antenna is installed correctly for the Radio
Communication to be reliable under all conditions.
Pulsar only supply External Antenna; these Antenna are weatherproof if
installed correctly.
Pulsar also supply 4m extensions for both the receiver and transmitter end
to ensure there is sufficient flexibility for Antenna positioning.
The Antenna always need a CLEAR LINE OF SIGHT to each other to
maintain reliable communication, care should be taken if either the
transmitter or receiver end is installed on moving machinery. Or, the
installation takes place in winter and foliage growth during the summer
months could block signal.
Radio signal does not penetrate metalwork or water so special care should
be taken avoiding these objects within line of sight.
The 4m length of cable at each end should not be tightly coiled, care should
be taken during the installation to ensure, if possible, the extension cable is
run in such a way as to make extensive or tight coiling of the remainder
unnecessary.
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Bridge Integrator-Radio Schematic
The Integrator on the Bridge should be protected from the elements inside
an enclosure, the Antenna extension cable should be installed through a
cable gland in the base of the enclosure and out to a suitable position so
that the Antenna is above the enclosure.
If the installation position at either end is thought to be susceptible to a
lightning strike then a surge suppressor can be installed in place of the cable
gland, this installation would require an additional small extension cable
from the integrator to the surge suppressor which is a bulkhead fitting.
Please contact Pulsar for details.
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Specifications
Radio Range
2.4 GHz up to 3km.
Radio Transmit Power
18dn conducted, less than or equal to 20dbm EIRP.
Radio Compliance
FCC ID UE300DX80-2400 This device complies with
FCC Part 15 Subpart C 15.247
ETSI/EN In accordance with EN 300 328: V1.7.1 (2006-
05). IC 7044A-DX8024
dB series (Air)
Maximum Separation
3,280 ft (1,000m)
Spread Spectrum Technology
FSSS (Frequency Hopping Spread Spectrum)
Link Time Out
Adjustable
Power
+10 to 30VDC Consumption less than 1.4W (60ma) at
24vdc
Housing
Polycarbonate housing, nitrile rubber button covers.
Mounting M5, Weight 0.26kg
Antenna Connection
External reverse polarity SMA 50 Ohms, max
tightening torque 0.45Nm
Interface
Red/Green Power LED, Red/Yellow Signal LED
Wiring Access
½” NPT
Inputs
Discrete I/P OFF condition, PNP Less than 5V, NPN
Greater than 2V or Open. Analogue I/P Rating 24ma,
Impedance 100 ohms, Sample Rate 1 second or 1%,
Resolution 12bit
Outputs
OFF State Leakage Less than 10 micro amps, Max End
to End Latency 300 milliseconds. Analogue Outputs.
Update Rate 125ms Accuracy 0.1%, Resolution 12bit
Environmental
Rating IEC IP67, NEMA 6. Operating temp -40 to 85ºC.
Operating Humidity 95%. Radiated Immunity 10v/m,
80-2700MHz (EN61000-6-2)
Shock and Vibration
IEC 68-2-6 and IEC68-2-7, Shock 30g 11ms half sine
wave, 18 shocks, Vibration 0.5mm p-p 10 to 60 Hz.
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HOW TO USE YOUR SLUDGEFINDER 2
Operating the Controls
Display
The graphical display provides four levels of runtime information and a
sophisticated, progressive menu system in program mode.
While in Run Mode, the ‘Main’ screen displays the current level reading and
its units of measure, with a graphical representation of level for point 1
and/or point 2 along with status information with regards to the Transducer,
Echo reception, Wiper status and Fail Safe Mode via the hotkeys. To scroll
between run mode screens, use the left and right arrow keys (see diagrams
below). To switch between points, use the up and down arrow keys.
The ‘Echo’ screen shows the live echo trace of point 1, point 2 or both on
the same screen, with various viewing options described later in this chapter.
The ‘Range’ screen gives details of the empty level, span and blanking for
point 1 or point 2.
The ‘Relays’ screen gives live information on relay type and current state, a
graphical representation of on and off setpoints and the current level for
point 1 or point 2.
When in Program mode, the display is used to read information on the
menu system, parameter details and the values that can be entered.
During Test Mode the display is used to monitor the simulated level with a
screen like the ‘Main’ screen in Run Mode. The current test mode
(auto/manual hard/soft) will also be shown at the bottom of the screen.
There are two main operating modes for your Sludge Finder 2, Run Mode
and Program Mode. There is also a Test Mode, used for checking the setup. All modes are now described.
SLUDGEFINDER 2 INSTRUCTION MANUAL
56
Run Mode
This mode is used once the Sludge Finder 2 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 Sludge Finder 2 is switched on for the first time, it will display, in
metres, a level measurement relating to the default tank dimensions. 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).
Main
This group of screens provides information on Point 1, Point 2 or an
overview of both Points. Use the up and down arrows to scroll between
points 1, 2 or both. Below is an example of point 1, this is the screen that will
be displayed when the Sludge Finder 2 is switched on for the first time.
Error messages, such as “Wiper Fault”, “Status = LOE” or “Status = Failed”
will be displayed on this screen, relating to the point of measure currently
being viewed, when a fault condition occurs.
Tank overview
showing a graphical
representation of
the sludge level in
percentage of span.
Sludge level in
percentage of
Current sludge
interface level in
measurement units
Clock
Display modes - current
mode is highlighted.
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Echo
The echo screen displays the echo data. Below is an annotated example of a
typical secondary settlement tank sludge interface.
Range
This screen gives details of the current interface level and the range settings
held in the Sludge Finder 2.
P107 = Near Blanking Distance
P106 = Span
P105 = Empty Distance
Sludge Interface measurement
Gate
Tank
Bottom
Distance in
measurement
units
Wiper Status
Transducer Status
Echo Strength
in dB
Sludge Interface
indicator
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Relays
The relays screen indicates the current state of all relay outputs and gives a
visual representation of the current interface level and the on and off
setpoints of the individual relays. The level icons, e.g., “ ” (point 1),
represent the level reading of the transducer that the corresponding relay is
assigned to (see table below). Relays that do not relate to level will be
displayed without the graphical representation of level setpoints but will still
show the relay number and status.
All icons show the measurement from the vertical centre of the icon.
LEVEL ICON
DESCRIPTION
Point 1 Level, shown on left hand side of relay diagram.
Point 2 Level, shown on right hand side of relay diagram.
Average level, shown on left hand side of relay diagram.
Sum of levels, shown on left hand side of relay diagram.
Differential level, shown on left hand side of diagram.
Solid region within here,
relay is always ACTIVE (ON).
Region between solid area and line
signifies relay can be ACTIVE if
triggered or INACTIVE if not triggered.
Light region within here, relay
is always INACTIVE (OFF).
Current Level Icon
Relay ON setpoint.
Relay OFF setpoint.
A = Alarm
C = Control
M = Misc.
N = Not set
The numbers
represent the
relay number.
Relay Status
Current point and
value in P104,
measurement
units shown in
P100, mode of
operation.
Tank view of the
level of the
current point of
measure.
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Program Mode
This mode is used to set up the Sludge Finder 2 or change information
already set. You must use the built-in keypad to access program mode.
Alternatively, the unit can be set up with a PC via the RS 232 Serial Interface.
Entering a value for each of the parameters that are relevant to your
application provides all of the programming information.
How to Access Program Mode
With Sludge Finder 2, to enter program mode, you simply enter the
passcode, via the keypad, followed by the ENTER key. The default passcode
is 1997, so you would press the following:
Screenshots of program mode
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
Main Menu
Sub Menu
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Information screen
The information screen can be used to view system details such as Software
revision, serial number etc. but can also be used to view a summary of the
application settings. To access the information screen, press the button
when the Sludge Finder 2 is in run mode. There are 4 pages within the
information screen, preceded by the pulsar logo, showing the current page
number at the bottom centre of the information screen. The screens will
automatically scroll but can also use the left and right arrow keys to toggle
between pages an example of page 1 is shown below:
PAGE
DESCRIPTION
1
General information on the system. See example above
2
Information on communications set up: RS232 and RS485 (if available)
3
Information on application set up, such as; transducer type, mode,
empty level etc.
4
Information on mA output setup such as; allocation etc.
Sub menu
heading
Parameter
list
Current value
Units (none in
this case)
System : SludgeFinder
Version : 2.2
Boot : Loader 1.2
Date : 12/03/21
Time : 16:45
Customer : Pulsar
Serial : 12345
Site ID : 12345
1/4
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Hot Keys
There are five hot keys on the keypad that can be used to quickly access
common parameters for viewing only, while in Run Mode. Pressing the hot
key once will initiate or toggle the function assigned to that key, then the
Sludge Finder 2 reverts to the Run Mode display, if applicable. In program
mode, they have different functions. Information displayed by the function
keys in the “Main” screen will timeout and disappear after 20secs. The
functions are shown below:
HOT KEY
RUN MODE
PROGRAM MODE
Toggle status, echo strength, wiper
status and temperature display in the
“Main” screen.
Toggle the Gate display in the “Echo”
screen.
Clear the current value
Toggle distance, level, and space
display in “Main” screen.
Toggle the DATEM trace in “Echo”
screen.
Not used with Sludge Finder 2
Toggle mA output display in the ‘Main’
screen
Toggle the the Raw echo in the “Echo”
screen
Reset parameter to default
setting
Not used with Sludge Finder 2
Not used with Sludge Finder 2
Initiates a wiper sweep on the sludge
transducer face (VT transducers on
single point main display only).
Not used with SludgeFinder 2
Not used with SludgeFinder 2
Toggle negative values
Displays the information screen,
timeout 20 seconds.
Enter decimal point.
F1
F2
F3
F4
F5
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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 and used as a backspace when editing the value of
a parameter.
2) Used for changing display modes in Run Mode.
3) Used in test mode to simulate the level moving up and
down (Right = up, Left = down)
1) Used to for moving up and down through the menu
system)
2) Used for changing displayed point of measurement in Run
Mode.
1) Used to confirm each action (for example, select a menu
option or accept a parameter number or value).
2) Used to confirm questions asked by your Sludge Finder 2
such as before restoring factory defaults.
When in ‘program mode’ used to navigate back a level in the
menu system or back to run mode. Cancel a value entered in
error. When in ‘run mode’ used to re-initialise the SF2 echo
trace if the unit is thought to be reading the incorrect value. This
function should only be used by experienced users, see Service
Manual for further details.
CANCEL
ENTER
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Numeric Keys
These keys are used for entering numerical information during
programming.
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.
At the top of the display there is a line of text that displays the main menu
items. Pressing the left/right arrow keys scrolls the display between the toplevel menu items, (as the example shown below, starting at Application).
*This is only available in units with firmware version 1.1.0 or greater
As you press the cursor keys to scroll left and right between these, you can
press ENTER, or the down arrow, at any time, to expand the sub-menu.
Each menu options, along with their sub-menus, is described later in this
manual. When you move down into the sub-menu, you can scroll up and
down using the arrow keys and then press ENTER to go to the required
parameter lists. If there are more menu options or parameters than can be
viewed on the display in one go, then a scroll bar will appear on the right
hand side of the menu/parameter box. The position of the solid bar within
the scroll bar provides a visual aid as to your position in the current menu.
Parameter List
Highlighted
parameter
Scroll bar
Scroll bar
position
Application
*Floc Alarm
Compensation
Data Logs
Stability
Display
Echo Process
Relays
mA Output
System
Device Comm
Test
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Once you have reached the relevant section, scroll down the parameter list
to highlight the parameter you wish to edit, and press ENTER to access the
parameter options. When you are at parameter level, the options for that
parameter will be displayed on the screen. If the parameter has pre-set
options then scroll up or down, with the up/down arrow keys, or press the
designated number key (displayed on the left hand side) to highlight the
option, then press ENTER to save. If the parameter requires you to enter a
value within a particular range, the range options will be displayed with a
box to enter the value. Use the numeric keypad to enter the required value
following the onscreen prompts and press ENTER to save.
When you have finished, press CANCEL to go back to the previous menu
level. When you have reached the top level, press the CANCEL button again,
the Sludge Finder 2 will ask for confirmation before allowing you return to
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.
Once a parameter has been changed, press ENTER and you will see the
parameter value changed in the parameter list. If you press CANCEL then
you will be returned to the parameter list with no change to the values.
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66
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 outputs will change in accordance with 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 don’t
wish to change the relay state, then select a soft simulation.
There are two modes of simulation for each point of measurement,
automatic and manual. Automatic simulation will move the level up and
down between empty level or the pre-determined Start Level (P983) and
the span, if you wish to change the direction of the level movement, this can
be done by using the left/right arrow keys. In manual simulation, using the
up/down 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 ‘Simulation’. Select the point
of measure you wish to simulate and press enter to access the simulation
options. You can change the value of the parameter to one of the following:
1= Manual soft simulation
2= Automatic soft simulation
3= Manual hard simulation
4= Automatic hard simulation
When in test mode, the display will show the graphical level indicator with
the current mode of operation value in measurement units. Also shown will
be the relay setpoint indicators, for each relay, with an arrow showing the
current level relevant to that relay allocation e.g. if you are simulating point
1 then the level indicator will move up and down along with the arrows next
to any relay allocated to point 1. If a relay is allocated to sum, average or
differential, then the Sludge Finder 2 will span the relay diagram to the sum,
average or differential of point 1 and 2. The level of point 2 (or point 1 if
simulating point 2) will always remain at 0.
To return to program mode, press CANCEL and test mode will end.
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When in manual simulation, by default test mode will move the level by
0.1m steps. Altering the increment (P981) will change this value.
In automatic mode, the rate at which the level moves up and down is set by
the increment (P981 in metres, the rate (P982) in minutes, which can be
changed to make the level move up and down faster. E.g., if increment
(P981) is set for 0.1m and rate (P982) 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 (P981) or increase the value
in rate (P982). To make the simulated level move faster, increase the value
in increment (P981) or decrease the value in rate (P982).
Using the Serial Interface
The RS232 serial interface is used to communicate between the Sludge
Finder 2 and a PC using the optional Sludge Finder PC software 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 default
settings for communications port 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 Installation.
To use the device remotely, you need to log on to start, and log off when
finished. When logged on, Sludge Finder 2 will show “Remote” on the
display in place of the clock. When logged off, the display will return to
normal (clock will be displayed).
All commands should be followed by a carriage return.
The unit will respond either OK or a value if the command is accepted, or
NO if the command is not recognised or is not available.
To log on, send the command
/ACCESS:pppp where pppp is the passcode (P922).
To log off, send the command
/ACCESS:OFF
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 1 (shows current distance of point 1)
/DISTANCE 2 (shows current distance of point 2)
/LEVEL 1 (shows current level of point 1l)
/LEVEL (shows current level of point 2)
/TEMP1 (shows current temperature of point 1)
/TEMP2 (shows current temperature of point 2)
/CURRENTOUT1 (shows the mA output value for mA output 1)
/CURRENTOUT2 (shows the mA output value for mA output 2)
Please consult Pulsar Measurement or contact your local Pulsar
representative for further details and a full list of available commands.
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Parameter Defaults
When you first switch Sludge Finder 2 on, it will be reading the distance
from the face of the transducer to the interface. It will be indicating in
metres, as shown on the display and all relays are set OFF.
The date (P931) and time (P932) in Sludge Finder 2 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 unit Parameter listing for full
details.
Once you are satisfied with the installation, and Sludge Finder 2 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 of the required parameters
at the same time. The system will then be fully set-up.
Once you are satisfied with the installation, and the SludgeFinder 2 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 of 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 Sludge Finder 2, 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 Defaults
P930, as described in the parameter guide.
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70
CHAPTER 4 PROGRAMMING GUIDE
Measurements needed for Interface monitoring
Mea s ured ta n k dep th a nd Tra n s ducer d epth a r e refe r enced f r om th e
sam e point – Top wa t er lev el.
P115 Tank Depth
P116 Transducer
Depth
P107 Near Blanking
P107 Span
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Example 1: Primary Settlement Sludge Interface monitoring
Tank Depth (P115) 2.8m
Span (P106) 2.3m
High alarm off (P214) 1.85m
Transducer Depth (P116) 0.2m
Interface level
High Alarm on (P213) 1.95m
Empty level
Near Blanking (P107) 0.3m
In this example, when the sludge interface level rises to 1.95 m, relay 1 will
come on until the level drops to 1.85 m when it will turn off.
The display for point 1 will show the sludge interface level in the tank.
The mA output will be representative of sludge interface level where 4mA =
empty level (0%) and 20mA = 2.3m (100%).
To program the unit for Example 1 Primary Settlement Sludge Interface
Monitoring, proceed as follows.
If required access the Program Mode.
Key in the passcode 1997 and press ENTER.
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72
Use the arrow keys to scroll to the following menus and parameters and
press ENTER to access them. Select the relevant option using the up and
down arrows or type in the required value using the keypad and press
ENTER to accept.
All other parameters should remain at default values.
If combining the sludge interface monitoring with a tank liquid level monitor
then proceed to Example 1b Level Monitoring with Alarms on Point 2
otherwise, 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 Sludge Finder 2 will return to the Run Mode.
MENU
SUB MENU
PARAMETER
VALUE/OPTION
Application
Point 1
Global
Mode P100
Xducer P101
Material P102
Tank Depth P115
Xducer Depth P116
Span P106
Meast Units P104
2 = Level
7 = VT10
2 = Primary
2.8 (metres)
0.2 (metres)
2.3 (metres)
1 = metres
Application
Relay 1
Type P210
Function P211
Ident P212
Setpoint 1 P213
Setpoint 2 P214
Allocation P216
1 = Alarm
1 = Level
2 = High
1.95 (metres)
1.85 (metres)
1 = Xducer 1
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Setting Up Point 2 with as an Ultrasonic Point of Measurement
If it is required that point two is to be set up as an ultrasonic transducer to
measure level in air, follow the procedure as per the example below.
Example 2: Level Monitoring with High and Low Alarms on Point 2
A vessel, containing a 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. The following method uses an air transducer from the dB range,
example shown is a dB6 on channel 2.
In this example, when the level rises to 2.38 m, relay 2 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 3 will come on until it rises 0.42 m when it will turn off.
The display for point 2 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 (P1105), 3.5m
100%. Span (P1106), 2.8m
85%. High alarm on (P223), 8.5 2.38m
80%. High alarm off (P224), 2.24m
0%, Empty level
10%. Low alarm on (P233), 0.28m
15%, Low alarm off (P234), 0.42m
SLUDGEFINDER 2 INSTRUCTION MANUAL
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To program the unit for Example 2 Level Monitoring with alarms, proceed
as follows.
If required access the Program Mode
Key in the passcode 1997 and press ENTER
Use the arrow keys to scroll to the following menus and parameters and
press ENTER to access them. Select the relevant option using the up and
down arrows or type in the required value using the keypad and press
ENTER to accept.
All other parameters should remain at default values.
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 Sludge Finder 2 will return to the Run Mode.
MENU
SUB MENU
PARAMETER
VALUE/OPTION
Application
Point 2
Mode P1100
Xducer P1101
Material P1102
Empty Level P1105
Span P1106
2 = Level
2 = dB6
1 = Liquid
3.5 (metres)
2.8 (metres)
Relays
Relay 2
Type P220
Function P221
Ident P222
Setpoint 1 P223
Setpoint 2 P224
Allocation P226
1 = Alarm
1 = Level
2 = High
2.38 (metres)
2.24 (metres)
2 = Xducer 2
Relay 3
Type P230
Function P231
Ident P232
Setpoint 1 P233
Setpoint 2 P234
Allocation P236
1 = Alarm
1 = Level
2 = High
2.38 (metres)
2.24 (metres)
2 = Xducer 2
mA Output
mA Out 2
Allocation P899
2 = Xducer 2
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Example Echo Screen for Ultrasonic Transducer
Status Indicator
Empty Distance
Indicator
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Example 3: Using a Single Viper Transducer to Measure 2 Different Interface Levels.
The Pulsar SF2 Integrator can be used to monitor both the Rag or FLOC
levels and the Settled Sludge or RAS levels simultaneously using only one
Viper Transducer.
This feature gives the user the ability to monitor and control the RAS level
application by monitoring the settled sludge, but also prevent damaging
FLOC spillage to the local water course by monitoring the less dense Rag
levels.
To achieve this, we utilise Point number 2 in addition to Point number 1.
Both points will display the same profile, but different service parameters
can be applied thus setting Point 1 to monitor the RAS layer and Point 2 the
FLOC layer.
It is required to set Point 2 Allocation in the Application menu (P1103) To 0
= Transducer 1.
The above profiles show the unit differentiating between the two echoes. In
this instance point one is set to pick the largest echo and point two is set to
pick the first echo (see SF2 Service Manual for details).
Each 4-20ma can be independently set to track both interfaces.
All relays can be independently set to give control or alarms on both points.
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Example 4: Setting the Unit to Alarm on Hi-Floc Levels
High Floc Alarm
The unit is now able to pick up on high level of floc readings, to do this it
reacts to the raw echo trace rather than the processed echo. You are then
able to set an alarm that is only reacting to the raw floc levels which will
activate if the % of intrusion (P163) is reached between the distances set
(in measurement units) in P160 Start distance and P161 End Distance. So
if the reading is low and sat near the bottom of the tank the processed echo
is low but the raw echo can be high.
The unit will pick up hi levels of floc near the surface which it can only do by
looking at the raw trace. The alarm On Delay P164 and Off Delay P165 can
be set to prevent passing ‘clouds’ of material in flight from nuisance
alarming.
With the introduction of the High Floc Alarm feature, several different
parameters and features now need to be included into the manual. Below
are the illustrations, parameters and their descriptions which require adding
to the new release of manuals due to be compiled indicating how to
program a high floc alarm.
Top Level Menu
*This is only available in units with firmware version 1.1.0 or greater.
Compensation
mA Output
Display
Stability
Device Comm
System
Echo Process
Test
Relays
Application
Floc Alarm*
Data Logs
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Setting up a High Floc alarm:
Note: When setting a High Floc Alarm, it is necessary to access two menu
systems the RELAYS menu to set up the relay and the FLOC ALARM menu
to set the alarm parameters.
Enter program mode by keying in 1997 and pressing ENTER. Once in
program mode you will need to program both a High Floc alarm relay and
set up the parameters in the new Floc alarm menu option. Assigning an
alarm relay to this new feature to alert you of a high floc presence, also
allows you to view on the units trace screen the area box monitored by the
Floc alarm parameters. How to set this alarm relay feature is explained in
Relay parameters. The parameters required to setup a High Floc alarm are
detailed in the Chapter 6 Menu system and parameter guide - Floc Alarm
section.
The ‘Intrusion Window’ appears in the top let hand side of the echo profile
display when the ‘Gate’ hot key is pressed.
The ‘Raw E c ho’ ( F 3 ) shoul d also b e pres s ed to s e e if t h e Raw E cho
prof i le is i n the d isplay i s intr u d ing in to the window .
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CHAPTER 6 MENU SYSTEM AND PARAMETER GUIDE
This section outlines all parameters available in the Sludge Finder 2, as they
appear in the menu system.
Shown below is a set of charts to show you how all the various parts can be
found using the menu system.
For further details and a full description of all parameters refer to Chapter 7
Parameter Listings and Descriptions.
Top Level Menu
Compensation
mA Output
Display
Stability
Device Comm
System
Echo Process
Test
Relays
Application
Floc Alarm*
Data Logs
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Application Menu
Global
P104 Measurement Units
Point 1
Point 2
Global
* only available with VT transducers
+
only available with dB transducers
Point 1
P100 Mode
P101 Transducer
P115* Tank Depth
P116* Transducer Depth
P105+ Empty Level
P106 Span
P107 Near Blanking
P108+ Far Blanking
P102 Material
Point 2
P1100 Mode
P1101 Transducer
P1115* Tank Depth
P1116* Transducer Depth
P1105+ Empty Level
P1106 Span
P1107 Near Blanking
P1108+ Far Blanking
P1102 Material
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Relays Menu
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
Relay 6
* is the number of the relay from 1 to 6
P2*0 Relay Type
P2*1 Relay Function
P2*2 Relay Ident.
P2*3 Relay Setpoint 1
P2*4 Relay Setpoint 2
P2*6 Relay Allocation
Relay *
P2*7 Relay Closures
P2*8 Failsafe Mode
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Floc Alarm Menu
Point 2
Point 1
P161 End Distance
P160 Start Distance
P162 Level
P163 % of Intrusion
P164 On Delay
P165 Off Delay
Point 1
P1161 End Distance
P1160 Start Distance
P1162 Level
P1163 % of Intrusion
P1164 On Delay
P1165 Off Delay
Point 2
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Data Logs Menu
Point 1
Point 2
Point 1
P580 Min. Temperature
P581 Min. Temp. Date
P582 Min. Temp. Time
P583 Max. Temperature
P584 Max. Temp. Date
P585 Max. Temp. Time
P586 Current Temp.
Point 2
P1580 Min. Temperature
P1581 Min. Temp. Date
P1582 Min. Temp. Time
P1583 Max. Temperature
P1584 Max. Temp. Date
P1585 Max. Temp. Time
P1586 Current Temp.
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Display Menu
Point 1
Point 2
Point 1
P802 Display Offset
P804 Display Conversion
P808 Failsafe Mode
P809 Failsafe Time
P801 Decimal Places
P800 Display Units
Point 2
P1802 Display Offset
P1804 Display Conv.
P1808 Failsafe Mode
P1809 Failsafe Time
P1801 Decimal Places
P1800 Display Units
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mA Output Menu
mA Out 1
mA Out 2
mA Out 1
P831 mA Mode
P841 mA Allocation
P830 mA Range
P840 mA Fail Mode
P834 mA Low Level
P835 mA High Level
P836 mA Low Limit
P837 mA High Limit
P838 mA Low Trim
P839 mA High Trim
mA Out 2
P891 mA Mode
P899 mA Allocation
P890 mA Range
P898 mA Fail Mode
P892 mA Low Level
P893 mA High Level
P894 mA Low Limit
P895 mA High Limit
P896 mA Low Trim
P897 mA High Trim
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Compensation Menu
Stability Menu
Point 1
Point 2
Point 1
P851 Measnt. Offset
P852 Temp. Source
P854 Fixed Temp.
P860 Sound Velocity
Point 2
P1851 Measnt. Offset
P1852 Temp. Source
P1854 Fixed Temp.
P1860 Sound Velocity
Point 1
Point 2
* dB transducers only
Point 1
P870 Fill Damping
P871 Empty Damping
P881 Fixed Distance
P882* Process Filter
P883 Gate Expand
Point 2
P1870 Fill Damping
P1871 Empty Damping
P1881 Fixed Distance
P1882* Process Filter
P1883 Gate Expand
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Echo Processing Menu
Point 1
Point 2
* dB transducers only
Point 1
P900 Transducer Status
P901 Echo Confidence
P902 Echo Strength
P903 Average Noise
P904 Peak Noise
P905* Sensitivity
P906* Side Clearance
Point 2
P910 Transducer Status
P911 Echo Confidence
P912 Echo Strength
P913 Average Noise
P914 Peak Noise
P915* Sensitivity
P916* Side Clearance
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System Menu
Passcode
P921 Enable Code
P922 Passcode
Backup
P925 Parameter Backup
System Info
P926 Software Revision
P927 Hardware Revision
P928 Serial Number
P929 Site Identification
P930 Factory Defaults
Date & Time
P931 Date
P932 Time
P933 Date Format
LED Colour
P935 Off Colour
P936 Alarm Colour
P938 Control Colour
P939 Misc. Colour
Passcode
Daylight Save
Backup
System Info
Date & Time
LED Colour
Watchdog
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Daylight Save
P970 DST Enable
P971 Difference
P972 Start Time
P973 Start Day
P974 Start Week
P975 Start Month
P976 End Time
P977 End Day
P978 End Week
P979 End Month
Watchdog
P940 Number of Starts
P941 Start Date
P942 Start Time
P943 Start Date 1
P944 Start Time 1
P945 Start Date 2
P946 Start Time 2
P947 Start Date 3
P948 Start Time 3
P949 Start Date 4
P950 Start Time 4
P951 Start Date 5
P952 Start Time 5
P953 Start Date 6
P954 Start Time 6
P955 Start Date 7
P956 Start Time 7
P957 Start Date 8
P958 Start Time 8
P959 Start Date 9
P960 Start Time 9
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Device Comm Menu
RS232 Setup
Modbus
Profibus
Comm. option dependent
RS232 Setup
P061 Comms Baudrate
Optional
Profibus
P132 Device Address
P143 Address Locked
Optional
Modbus
P130 Device Mode
P131 Protocol
P132 Device Address
P133 Device Baud rate
P134 Parity
P135 Stop Bits
P136 Data Format
P137 Delay in ms
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Test Menu
Simulate Pt 1
Hardware
Simulate Pt 2
Setup
Simulate Pt 1
P980 Simulate
Simulate Pt 2
P1980 Simulate
Setup
P981 Increment
P982 Rate
P983 Start Level
Hardware
P990 Self Test
P991 Hardware Test
P992 mA Output Test
P994 Transducer Test
P995 Keypad Test
P996 Relay Test
SLUDGEFINDER 2 INSTRUCTION MANUAL
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CHAPTER 7 PARAMETER LISTING AND DESCRIPTION
Application Parameters
Point 1 / Point 2
P1-100, P2-1100 Mode of Operation
This parameter sets the mode of operation, when in run mode, and can be
set to one of the following:
OPTION
DESCRIPTION
1 = Distance (Default)
Display shows the distance from the transducer face
to the surface of the material measured.
2 = Level
Shows how full a vessel is.
3 = Space
Shows how empty a vessel is.
4* = Average Level P1 & P2
Display shows the average level of point 1 & point 2
5* = Differential P1 & P2
Display shows the differential between point 1 &
point 2
*If transducer 2 is enabled
P1-101, P2-1101 Xducer (Transducer)
This parameter should be set to the transducer being used with the unit, and
can be set to one of the following:
OPTION
DESCRIPTION
0 = None
For point 2 only. Disables point 2 (Default)
1 = dB3
Transducer is a dB3. Range = 0.125 to 3 metres
2 = dB6
Transducer is a dB6. Range = 0.3 to 6 metres
3 = dB10
Transducer is a dB10. Range = 0.3 to 10 metres
4 = dB15
Transducer is a dB15. Range = 0.5 to 15 metres
5 = dB25
Transducer is a dB25. Range = 0.6 to 25 metres
6 = dB40
Transducer is a dB40. Range = 1.2 to 40 metres
7 = VT10 (Default)
Transducer is a VT10. Range = 0.3 to 10 metres
*8 = ST10
Transducer is a ST10. Range = 0.3 to 10 metres
*This option is only available in firmware versions 2.2.0 and greater
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P1-102, P2-102 Material
This parameter should be set to the type of site being monitored for Sludge
or the material being monitored with air transducers. The options are:
VT/ST Transducer
OPTION
DESCRIPTION
1 = Industrial
Use for the majority of non-sludge sites
2 = Primary (Default)
Use for primary settlement tanks
3 = Secondary
Use for secondary settlement tanks
4 = SBR
Use for SBR (Sequencing Batch Reactor) tanks
dB Transducers
OPTION
DESCRIPTION
1 = Industrial
Use for the majority of non-sludge sites
2 = Primary (Default)
Use for primary settlement tanks
P1-P105, P2-P1105 Empty Level (dB transducers only)
This parameter is to be set to the maximum distance from the face of a dB
transducer to the empty point (bottom of tank), in P104 Measurement
Units. This value also affects span, (see important information below), so
should be set before span. With sludge transducers, the empty level is
automatically calculated from P115 Tank Depth and P116 Transducer
Depth.
P1-P106, P2-P1106 Span
This parameter should be set to the maximum distance from the Tank
Depth (P115/P1115) or Empty Level (P105/P1105) to the maximum
material level. It is automatically set to be equal to the Tank Depth
(P115/P1115) or Empty Level (P105/P1105) less the Near Blanking
distance (P107/P1107) when you set the tank depth or empty level.
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P1-107, P2-1107 Near Blanking
This parameter is the distance from the face of the transducer that is not
measurable and is pre-set to the minimum value dependant on the
Transducer (P101) selected. It should not be set to less than this figure, but
can be increased, typically to ignore close in obstructions.
TRANSDUCER
NEAR BLANKING DISTANCE
P101/P1101 = dB3
Default blanking distance = 0.125 metres
P101/P1101 = dB6
Default blanking distance = 0.30 metres
P101/P1101 = dB10
Default blanking distance = 0.30 metres
P101/P1101 = dB15
Default blanking distance = 0.50 metres
P101/P1101 = dB25
Default blanking distance = 0.60 metres
P101/P1101 = dB40
Default blanking distance = 1.20 metres
P101/P1101 = VT10
Default blanking distance = 0.30 metres
*P101/P1101 = ST10
Default blanking distance = 0.30 metres
*This option is only available in firmware versions 2.2.0 and greater.
P1-108, P2-1108 Far Blanking Distance
This is the distance (as a percentage of empty level P105) beyond the
empty point that the unit will be able to measure, and by default is pre-set
to 20% of the empty level.
If the surface being monitored can extend beyond the Empty Level (P105)
then the far blanking distance can be increased to a maximum of 100% of
empty level.
This parameter is always entered as a % of empty level.
Important Notice
When changing the Tank Depth (P115) or Empty Distance (P105) you can also
recalculate the values for the Span and the Relay Setpoints to take in to account
the near blanking (P107) and transducer depth (P116) where applicable, so that
they remain at the same percentage values of the empty distance as they were
before they were changed. The question “Recalculate Span?” will be asked, if you
choose yes (enter), then the span will be recalculated, any other answer will leave
the span at its original value. You will then be asked if you want to “Recalculate
Setpoints?”, if you choose yes (enter), then all Relay Setpoints will be
recalculated as a percentage of the new empty distance, any other answer will
leave the setpoints at their original values.
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P1-115, P2-P1115 Tank Depth
This is the distance from the top of the tank (or the surface of the liquid
when full) to the bottom of the tank in P104 Measurement Units. This
parameter will only become available when a sludge transducer (prefixed
‘VT’) is selected in P101 Transducer Type.
P1-116, P2-P1116 Transducer Depth
This is the distance from the top of the tank (or the surface of the liquid
when full) to the face of the sludge transducer in P104 Measurement Units.
This parameter will only become available when a sludge transducer
(prefixed ‘VT’) is selected in P101 Transducer Type.
Global
P104 Measurement Units
This parameter sets the units you want to use for programming and display.
OPTION
DESCRIPTION
1 = metres (Default)
All units of measurement are Metres
2 = cm
All units of measurement are Centimetres
3 = mm
All units of measurement are Millimetres
4 = feet
All units of measurement are Feet
5 = inches
All units of measurement are Inches
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Relay Parameters
All relay related parameters are prefixed with a 2**.
The second digit of the three-figure parameter number denotes the relay
number as follows:
21* parameters for Relay 1
22* parameters for Relay 2
23* parameters for Relay 3
24* parameters for Relay 4
25* parameters for Relay 5
26* parameters for Relay 6
The third digit selects specific parameter for the setting of the relays, which
can be selected individually and results in the following parameter numbers
for each relay:
Relay 1 210 to 218
Relay 2 220 to 228
Relay 3 230 to 238
Relay 4 240 to 248
Relay 5 250 to 258
Relay 6 260 to 268
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P210, 220, 230, 240, 250, 260 - Relay Type
This parameter defines what type each relay should be, see the table below
for available options:
OPTION
DESCRIPTION
1 = Alarm
Relay is programmed as an alarm relay, which will de-
energise ON, and energise OFF. This will ensure an
alarm is raised if the power fails to the unit.
2 = Control
Relay is programmed as a control relay, which will
energise ON, and de-energise OFF.
3 = Miscellaneous
Relay is programmed as a miscellaneous relay, which will
energise ON, and de-energise OFF.
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Alarms
P210, 220, 230, 240, 250, 260 = 1 (Alarm)
The second parameter for each relay determines the function of the alarm.
P211, 221, 231, 241, 251, 261 – Relay Function
*This is only available in units with firmware version 1.1.0 or greater.
**This is only available in units with firmware version 1.1.1 or greater.
The third parameter for each relay determines the alarm ID for the relay
you wish to set.
P212, P222, P232, P242, P252, P262 - Relay Alarm ID
When P211, 221, 231, 241, 251, 261 = 3 (Loss of Echo), 4 (Loss of Clock)
or 5 (Wiper Fault)
This parameter has no function and will not be displayed.
OPTION
DESCRIPTION
0 = Off (Default)
Relay will not operate.
1 = Level
Alarm is based on the level in the vessel, and the type of level
alarm (P212, 222, 232, 233, 243, 253) and two setpoints must
be set (P223, 223, 233 & 214, 224, 234, 244, 254). Setpoints
are entered in display units or % of span as referenced to
empty level.
3 = Temperature
Alarm is based on the temperature, and the type of
temperature alarm (P212, 222, 232, 242, 252) and two
setpoints must be set (P213, 223, 233 & P214, 224, 234, 244,
254). The temperature used depends on the temperature
source selected (P852). Setpoints are entered in oC.
4 = Loss of Echo
Alarm is raised if the Failsafe Timer (P809) expires. No
setpoints required.
5 = Loss of Clock
Alarm is raised if the expires. No setpoints required.
*6 = High Floc Alarm
An alarm is raised if the floc level reaches the level of intrusion
as set in % intrusion P1-163.
**7 = Service Alarm
An alarm is raised when the unit has reached its service
interval (see service manual for details)
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When P211, 221, 231, 241, 251, 261 = 1 (Level) or 2 (Temperature). This
parameter has no function and will not be displayed.
P211, 221, 231, 241, 251 = 1 (Level), 2 = Rate of Change or 3 (Temp)
This parameter defines which alarm type, or identification, the relay should
respond to, as follows:
OPTION
DESCRIPTION
SETPOINTS
1 = General
(Default)
Relay goes “ON” when the
value reaches the ON
setpoint and goes “OFF”
when the value reaches the
OFF setpoint.
P213, 223, 233, 243, 253,
263 is ON Setpoint; P214,
224, 234, 244, 254, 264 is
OFF Setpoint.
2 = High
Relay goes “ON” when the
value rises to the ON
setpoint and goes “OFF”
when the value lowers to the
OFF setpoint.
ON> OFF Relay Setpoints
P213, 223, 233, 243, 253,
263 and P214, 224, 234,
244, 254, 264. Setpoints
can be set in any order as
the unit ‘knows’ that you
are setting a high level
alarm.
3 = HiHi
Same as 2 = High, but different identifier
4 = Low
Relay goes “ON” when the
value lowers to the ON
setpoint and goes “OFF”
when the value rises to the
OFF setpoint.
ON<OFF Relay Setpoints
P213, 223, 233, 243, 253,
263 and P214, 224, 234,
244, 254, 264. Setpoints
can be set in any order as
the unit ‘knows’ that you
are setting a low-level
alarm.
5 = LoLo
Same as 4 = Lo, but different
identifier
SLUDGEFINDER 2 INSTRUCTION MANUAL
100
OPTION
DESCRIPTION
SETPOINTS
6 = In bounds
Relay goes “ON” if value is
inside the zone between
the two setpoints.
Relay Setpoints, P213,
223, 233, 243, 253 and
P214, 224, 234, 244, 254
can be set in any order as
the unit ‘knows’ that you
are setting an inbounds
alarm.
7 = Out of bounds
Relay goes “ON” if value is
outside the zone between
the two setpoints.
Relay Setpoints P213,
223, 233, 243, 253 and
P214, 224, 234, 244, 254
can be set in any order as
the unit ‘knows’ that you
are setting an out of
bounds alarm.
“ON” and “OFF” points. For a high alarm, the “ON” is set higher than
“OFF”. For low alarm then “ON” is set lower than “OFF”. See the
appropriate alarm ID, table (P212, 222, 232, 242, 252, 262) for further
information.
When P211, 221, 231, 241, 251, 261 = 3 (Loss of Echo), 4 (Loss of Clock)
or 5 (Wiper Fault)
These parameters have no function and will not be displayed.
P211, 221, 231, 241, 251, 261 = 1 (Level) or 2 (Temperature)
P213, P223, P233, 243, 253, 263 - Relay Setpoint 1
Determines the “ON” or “OFF” point for the alarm according to the ID
selected.
P214, P224, P234, 244, 254, 264 - Relay Setpoint 2
Determines the “ON” or “OFF” point for the alarm according to the ID
selected.
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