dBi Series ( )
Intelligent Transducer
INSTRUCTION MANUAL
dBi SERIES (HART) INTELLIGENT TRANSDUCER (FIRST EDITION REV 1)
September 2012
Part Number M-dBi-H-001-1P
COPYRIGHT
© Pulsar Process Measurement Limited, 2012. 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 Process Measurement Limited guarantee for a period of 2 years from the date of delivery that it
will either exchange or repair any part of this product returned to Pulsar Process Measurement
Limited if it is found to be defective in material or workmanship, subject to the defect not being due to
unfair wear and tear, misuse, modification or alteration, accident, misapplication or negligence.
DISCLAIMER
Pulsar Process Measurement Limited 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 Process
Measurement Limited cannot be held liable for any errors.
Pulsar Process Measurement Limited operates a policy of constant development and improvement and
reserves the right to amend technical details as necessary.
TECHNICAL ENQUIRIES
Please contact Pulsar Process Measurement Limited for technical support.
COMMENTS AND SUGGESTIONS
If you have any comments or suggestions about this product, then please contact:
Pulsar Process Measurement Limited
Pulsar Process Measurement Inc.
Cardinal Building
Enigma Commercial Centre
Sandy’s Road
Malvern
Worcestershire
WR14 1JJ
United Kingdom
PO Box 5177
Niceville
FL 32578-5177
USA
Tel: + 44 (0) 1684 891371
Fax: + 44 (0) 1684 575985
Tel: + 1 850 279 4882
Fax: + 1 850 279 4886
Web Site: http://www.pulsar-pm.com
e-mail: info@pulsar-pm.com (general
information)
e-mail: support@ pulsar-pm.com (product
support)
Web Site: http://www.pulsar-pm.com
e-mail: info.usa@pulsar-us.com (general
information)
e-mail: support.usa@ pulsar-pm.com (product
support)
Contents
Chapter 1 Start Here… ......................................................................................................................................... 1
About this Manual ........................................................................................................................................... 1
About the dBi Series (HART) Intelligent Transducer ................................................................................... 2
Functional Description ............................................................................................................................ 2
Product Specification....................................................................................................................................... 4
Physical .................................................................................................................................................... 4
Environmental.......................................................................................................................................... 4
Performance ............................................................................................................................................. 5
Communications Protocol ....................................................................................................................... 5
PC interface .............................................................................................................................................. 5
Chapter 2 Installation............................................................................................................................................ 9
Power Supply Requirements ........................................................................................................................... 9
Dimensions .................................................................................................................................................... 10
The dimensions of the dBi Series Intelligent Transducer are as shown below. .......................................... 10
Rear Thread Mount ............................................................................................................................... 10
Front Thread Mount .............................................................................................................................. 11
Outdoor and Open Vessel Installation .......................................................................................................... 12
Closed Vessel Installation ............................................................................................................................. 13
Stand Pipe Installations ......................................................................................................................... 13
Cable .............................................................................................................................................................. 14
Typical wiring for a Non-Hazardous location .............................................................................................. 15
................................................................................................................................................................ 15
Loop Resistance ..................................................................................................................................... 15
Preparation for Operation .............................................................................................................................. 16
Maintenance ................................................................................................................................................... 17
Hazardous Area Installation .......................................................................................................................... 17
Information specific to Hazardous Area Installation............................................................................ 17
Hazardous Area specific Power Supply and barrier Requirements .................................................... 18
Chapter 3 How To Use Your dBi Series Intelligent Transducer ..................................................................... 23
4 – 20 mA Device .......................................................................................................................................... 23
Accessing Parameters .................................................................................................................................... 24
Hart Commands............................................................................................................................................. 24
Universal ................................................................................................................................................ 24
Common practice .................................................................................................................................. 24
dBi Hart PC Lite ............................................................................................................................................ 24
Connection ............................................................................................................................................. 26
Configuration ......................................................................................................................................... 28
Communication Port Configuration ..................................................................................................... 29
Parameter Defaults ........................................................................................................................................ 30
Factory Defaults ..................................................................................................................................... 30
Chapter 4 Getting Results With Your dBi Series Intelligent Transducer ....................................................... 31
Setting up Your Application ......................................................................................................................... 31
Empty Distance...................................................................................................................................... 31
Span ........................................................................................................................................................ 31
Near and Far Blanking .......................................................................................................................... 31
Using the 4-20 mA Output ............................................................................................................................ 31
Setting Security Passcodes ............................................................................................................................ 32
Changing The Passcode ........................................................................................................................ 32
Resetting Factory Defaults ............................................................................................................................ 32
Checking the Information Specific to your dBi Series Intelligent Transducer ........................................... 33
Checking the Software Revision and Serial Number .......................................................................... 33
Chapter 5 Parameter Guide ................................................................................................................................ 35
Parameter Listing ........................................................................................................................................... 35
Application..................................................................................................................................................... 35
Operation ................................................................................................................................................ 35
P100 Mode of Operation ....................................................................................................................... 35
P102 Material ......................................................................................................................................... 35
Distances ................................................................................................................................................ 36
P104 Measurement Units ...................................................................................................................... 36
P105 Empty Level ................................................................................................................................. 36
P106 Span .............................................................................................................................................. 36
P107 Near Blanking Distance ............................................................................................................... 36
P108 Far Blanking Distance ................................................................................................................. 37
Data Logs ....................................................................................................................................................... 37
Temperature ........................................................................................................................................... 37
P580 Minimum Temperature ................................................................................................................ 37
P581 Minimum Temperature Date ....................................................................................................... 37
P582 Minimum Temperature Time ...................................................................................................... 37
P583 Maximum Temperature ............................................................................................................... 37
P584 Maximum Temperature Date ...................................................................................................... 37
P585 Maximum Temperature Time ..................................................................................................... 37
P586 Current Temperature .................................................................................................................... 38
Transducer Power Information ............................................................................................................. 38
P940 Number of Starts .......................................................................................................................... 38
P941 Last Power Off Date .................................................................................................................... 38
P942 Last Power Off Time ................................................................................................................... 38
P943 Last Run Time (minutes) ............................................................................................................. 38
P944 Last Run Time (hours) ................................................................................................................. 38
P945 Total Runtime (hours) .................................................................................................................. 38
Volume........................................................................................................................................................... 39
Conversion ............................................................................................................................................. 39
P600 Vessel Shape ................................................................................................................................ 39
P601-P603 Vessel Dimensions ............................................................................................................. 41
P604 Calculated Volume....................................................................................................................... 41
P605 Volume Units ............................................................................................................................... 42
P606 Correction Factor ......................................................................................................................... 42
P607 Max Volume ................................................................................................................................ 42
Breakpoints ............................................................................................................................................ 43
P610-P641 Level/Volume Breakpoints ................................................................................................ 43
P696 Reset Breakpoints ........................................................................................................................ 44
P697 Number of Breakpoints Set ........................................................................................................ 44
mA Output ..................................................................................................................................................... 45
P834 mA Low Level ............................................................................................................................. 45
P835 mA High Level ............................................................................................................................ 45
P838 mA Low Trim .............................................................................................................................. 45
P839 mA High Trim .............................................................................................................................. 45
P808 Fail-safe Mode ............................................................................................................................. 45
P809 Fail-safe Time .............................................................................................................................. 46
Compensation ................................................................................................................................................ 46
P851 Measurement Offset ..................................................................................................................... 46
P852 Temperature Source ..................................................................................................................... 46
P854 Fixed Temperature ....................................................................................................................... 46
P860 Sound Velocity ............................................................................................................................. 47
P645 Vapour Temperature Compensation ........................................................................................... 47
Stability .......................................................................................................................................................... 48
Damping................................................................................................................................................. 48
P870 Fill Damping ................................................................................................................................ 48
P871 Empty Damping ........................................................................................................................... 48
Filters ...................................................................................................................................................... 48
P881 Fixed Distance .............................................................................................................................. 48
P884 Peak Percentage ........................................................................................................................... 48
System ............................................................................................................................................................ 48
Password ................................................................................................................................................ 49
P921 Enable Code ................................................................................................................................. 49
P922 Passcode ....................................................................................................................................... 49
System Information ............................................................................................................................... 49
P926 Software Revision ........................................................................................................................ 49
P927 Hardware Revision....................................................................................................................... 49
P928 Serial Number .............................................................................................................................. 49
P930 Factory Defaults ........................................................................................................................... 49
Date & Time .......................................................................................................................................... 49
P931 Date ............................................................................................................................................... 49
P932 Time .............................................................................................................................................. 49
LOE Save Trace .................................................................................................................................... 50
P950 Save DATEM Trace on LOE ...................................................................................................... 50
DATEM ......................................................................................................................................................... 50
P020 Set DATEM ................................................................................................................................. 50
P021 Set Dist ......................................................................................................................................... 50
P905 Peak Clearance ............................................................................................................................. 51
P906 Side Clearance .............................................................................................................................. 51
Chapter 6 Troubleshooting ................................................................................................................................ 53
Parameter Record ................................................................................................................................................. 54
Page1
Chapter 1 Start Here…
Congratulations on your purchase of a Pulsar dBi Series Intelligent
Transducer Level Monitoring System. This quality system has been
developed over many years and represents the latest in high technology
ultrasonic level measurement and control. It has been designed to give you
years of trouble-free performance, and a few minutes spent reading this
operating manual will ensure that your installation is as simple as possible.
About this Manual
It is important that this manual is referred to for correct installation and
operation.
There are various parts of the manual that offer additional help or
information as shown:
Tips
TIP
At various parts of this manual you will find tips to
help you.
Additional Information
Additional Information
At various parts of the manual, you will find sections
like this that explain specific items in more detail.
Page 2
About the dBi Series (HART) Intelligent Transducer
Functional Description
The dBi Series Intelligent Transducer is a highly developed ultrasonic
level measurement system which provides non-contacting level
measurement for a wide variety of applications in both liquids and solids. Its
unique design gives unrivalled performance in echo discrimination and
accuracy in a loop powered device.
Easy calibration and maintenance free “fit and forget” performance mean
that you can install the dBi Series Intelligent Transducer Level
Monitoring System rapidly and with confidence, with calibration being
achieved either by the use of a HART programmer/calibrator or via a PC
utilising the Pulsar interface and software.
Page3
The dBi Series Intelligent Transducer operates on the principle of timing
the echo received from a measured pulse of sound transmitted in air and
utilises “state of the art” echo extraction technology.
dBi Series Intelligent Transducer comes in four models:
dBi 3 with a range from 0.125m (0.41 feet) to 3.00m (9.84 feet), dBi 6 with
a range of 0.3m (0.98 feet) to 6.00m (19.69 feet), and dBi 10 with a range of
0.3m (0.98 feet) to 10.00m (32.81 feet) and dBi 15 with a range of 0.5m
(1.64 feet) to 15.00m (49.213 feet).
All models can be mounted via a rear, 1” BSP/NPT, thread (Standard) with
a model with alternative front thread mounting being available, in addition
flange mount and PVDF options are also available. See Chapter 2
Installation for further details.
All model types are available for use in hazardous area installations with
either Ex mb or Ex ia ATEX certification.
The dBi Series Intelligent Transducer has a 4 to 20mA output which can
be programmed to give an output proportional to level, space, distance or
volume, dependant on the measurement mode selected and provides a ‘fault
condition’ alarm of either 3.8mA or 22mA.
Page 4
Product Specification
Physical
Model
Housing
Material
Mounting
Connection
Overall
Diameter
Overall
Height
Nominal
Weight
dBi 3 metre
Valox
357 PBT
Rear
1″ BSP or NPT
77 mm
(3 inches)
134 mm
(5.3 inches)
1.0Kg
dBi 6 metre
Valox
357 PBT
Rear
1″ BSP or NPT
86 mm
(3.4 inches)
121 mm
(4.8 inches)
1.2Kg
dBi 10 metre
Valox
357 PBT
Rear
1″ BSP or NPT
86 mm
(3.4 inches)
121 mm
(4.8 inches)
1.3Kg
dBi 15 metre
Valox
357 PBT
Rear
1″ BSP or NPT
86mm
(3.4 inches)
135mm
(5.3 inches)
1.4Kg
dBi 3 metre
Valox
357 PBT
Front
1½″ Thread
77mm
(3 inches)
160mm
(6.3 inches)
1.0Kg
dBi 6 metre
Valox
357 PBT
Front
1½″ Thread
77mm
(3 inches)
160mm
(6.3 inches)
1.2Kg
dBi 10 metre
Valox
357 PBT
Front
2″ Thread
77mm
(3 inches)
160mm
(6.3 inches)
1.3Kg
dBi 3 metre
PVDF
Rear
1″ BSP or NPT
77 mm
(3 inches)
134 mm
(5.3 inches)
1.0Kg
dBi 6 metre
PVDF
Rear
1″ BSP or NPT
86 mm
(3.4 inches)
121 mm
(4.8 inches)
1.2Kg
dBi 10 metre
PVDF
Rear
1″ BSP or NPT
86 mm
(3.4 inches)
121 mm
(4.8 inches)
1.3Kg
dBi 15 metre
PVDF
Rear
1″ BSP or NPT
86mm
(3.4 inches)
135mm
(5.3 inches)
1.4Kg
dBi 3 metre
PVDF
Front
1½″ Thread
77mm
(3 inches)
160mm
(6.3 inches)
1.0Kg
dBi 6 metre
PVDF
Front
1½″ Thread
77mm
(3 inches)
160mm
(6.3 inches)
1.2Kg
dBi 10 metre
PVDF
Front
2″ Thread
77mm
(3 inches)
160mm
(6.3 inches)
1.3Kg
Environmental
o Temperature range -40 to +80°C. Ambient Electronics
o Temperature range -40 to +80°C. Transducer in process
o IP rating IP68
Page5
Performance
o Digital signal processing
o Input Voltage range 10-28volts DC.
o Frequencey
dBi 3 125KHz
dBi 6 75Khz
dBi 10 50Khz
dBi 15 41Khz
o Beam Angle
dBi 3, 6and 10 <10o
dbi 15 <8o
o Measurement range
dBi 3 0.125m (0.41 feet) to 3.00m (9.84 feet)
dBi 6 0.3m (0.98 feet) to 6.00m (19.69 feet)
dBi 10 0.3m (0.98 feet) to 10.00m (32.81 feet)
dBi 15 0.5m (1.64 feet) to 15.00m (49.213 feet)
o Accuracy ± 0.25% of measured range or 6mm which ever is greatest.
o 4-20mA output resolution 1uA.
o Temperature compensation via internal digital temperature sensor with ±
0.5°C accuracy.
o Current consumption 3.8ma to 22ma
o Boot time from power up to stable reading, cold boot 9 seconds, warm
boot 4 seconds(if within 12hrs from last start up). For 4 to 20ma set
proportional to measured level/distance.
Communications Protocol
o Hart 7
PC interface
o All parameters can be accessed and changed via Hart Modem and dBi
Hart Lite Communicator.
o Trace viewing ability and parameter upload/download capability via
Hart Modem and dBi Hart PC.
Pulsar Process Measurement Limited operates a policy of constant
development and improvement and reserve the right to amend technical
details as necessary.
Page 6
EC DECLARATION OF CONFORMITY
Declaration No. 001001
We, the undersigned:
Name of Manufacturer
/ Authorised
representative
Pulsar Process Measurement Ltd.
Address:
Pulsar Process Measurement Ltd
Cardinal Building
Enigma Commercial Centre
Sandy's Road
Malvern
Worcestershire
WR14 1JJ
Country:
England
Declare under our sole responsibility that the following apparatus:
Product description:
Ultrasonic Transducers, HART dBi range
Model or Type No.:
dBi 3, dBi 6, dBi 10 & dBi 15 Ex ia & Ex mb versions
Brand name:
HART dBi range
Are in conformity with the following relevant EC legislation:
ATEX directive 94/9/EC
EMC directive 2004/108/EC
Based on the following harmonised standards:
EN60079-0:2009
EN60079-11:2012 (Ex ia)
EN60079-18:2009 (Ex mb)
EN60079-26:2007 (Ex ia)
EN61326-1:2006 EN55011 Class B
radiated emissions
EN61000-4-2 Level 4 Immunity to static discharge
EN61000-4-3 Immunity to radiated fields EN61000-4-5 Level 4
immunity to surges
EN61000-4-6 Level 4 immunity to conducted interference
Page7
And therefore complies with all of the relevant essential requirements of
those other directives.
The following Notified Body has been involved in the conformity
assessment process:
Notified Body
TRaC Global Ltd
Notified Body No.
0891
Role:
Issue of ATEX EC Type Examination certificate
Certificate No.
TRaC12ATEX0022X (Ex ia) & TRaC12ATEX0023X (Ex
mb)
(Additional information:
ATEX coding
II 1 G Ex ia IIC T4 Ga & II 1 D Ex ia IIIC T130°C Da
Tamb -40°C to +80°C
II 2 G Ex mb IIC T4 Gb & II 2 D Ex mb IIIC T130°C Db
Tamb -40°C to +80°C
Limitations on use
1. The dBi transducers must be routinely inspected to avoid
the build up of dust layers when installed in a Zone 21 &
22.
2. Electrostatic hazard – The dBi transducers must only be
wiped with a damp or antistatic cloth
3. Only the fuses listed on drawing D-0804-0978-A are
permitted to be used with the Ex approved dBi transducers.
Name and position of person binding the manufacturer or authorised
representative:
Signature
Name
Steve Lycett
Function
Authorised Person
Location
Pulsar Process Measurement Ltd, WR14 1JJ
Date of issue
2012-11-09
Page 8
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Page9
Chapter 2 Installation
Power Supply Requirements
The dBi Series Intelligent Transducer operates from a DC supply of 10 to
28V and will typically draw less than 22 mA.
All electronic products are susceptible to electrostatic
shock, so follow proper grounding procedures during
installation.
The compact one-piece construction of the dBi Series Intelligent
Transducer can be mounted easily using either the 1″BSP/NPT rear
mounting thread or the integral 1.5" or 2" BSP/ NPT, nose thread, dependent
on model.
When choosing a location to mount the dBi Series Intelligent Transducer,
bear in mind the following:
The ultrasonic signal path should be free of falling material and
obstructions such as pipes, beams etc.
The dBi 3 should be mounted at least 12.5cm (0.41 feet) above the
maximum level of the material and be perpendicular to the surface.
While the dBi 6 and 10 should be mounted at least 30cm (0.98 feet)
above the maximum level of the material and be perpendicular to
the surface. And the dBi 15 should be mounted at least 50cm (1.64
feet) above the maximum level of the material and again should be
perpendicular to the surface
The ambient temperature is between -40ºC and 80ºC.
There should be no high voltage cables or electrical inverter wiring
in close proximity to the transducer cabling.
Page 10
Dimensions
The dimensions of the dBi Series Intelligent Transducer are as shown below.
Rear Thread Mount
dBi 3
dBi 6 & 10
dBi 15
Page11
Front Thread Mount
dBi 3 & 6
dBi 10
Page 12
Outdoor and Open Vessel Installation
The dBi Series Intelligent Transducer can be simply mounted on a
bracket, suitable for the application and secured using either the 1"
BSP/NPT rear thread or via the 1½″ or 2″ front thread, dependant on model.
Care should be taken to ensure that the dBi Series Intelligent Transducer
is not installed in direct sunlight, in order to avoid errors in the measurement
of ambient temperature.
Attention should also be taken, when mounting the unit, to ensure that
strong windy conditions are avoided, wherever possible, to prevent
abnormal operation.
dBi Model
Range
L = Blanking
dBi 3
3 metres (9.84 feet)
125mm (0.41 feet)
dBi 6
6 metres (19.69 feet)
300mm (0.98 feet)
dBi 10
10 metres (32.18 feet)
300mm (0.98 feet)
dBi 15
15 metres (49.21 feet)
500mm (1.64 feet)
‘L’ (Blanking) should as a minimum be at least that as detailed in the
table above, but can be greater if required.
Mounted via Rear 1″BSP?NPT
Thread
Mounted via optional Front Thread
Page13
Closed Vessel Installation
“L” should as a minimum be at least that as detailed in the table above, but
can be greater if required. The dBi Series Intelligent Transducer can be
simply screwed into a flange and secured using the rear 1" BSP/NPT rear
thread or via the 1½″ or 2″ front thread, dependant on model.
Where possible use a flange made of a synthetic material such as PVC, in
cases where a metal flange is used it is advisable to fit a suitable gasket
between the flange of the dBi Series Intelligent Transducer and the
connection to the vessel.
Stand Pipe Installations
When mounting the dBi Series Intelligent Transducer to a standpipe care
should be taken to ensure that the standpipe is of sufficient diameter with
reference to its length, see the table below for details:
Dia. (D)
Max Length (L)
mm
inches
mm
inches
80
3
220
8
100
4
300
12
150
6
420
16
200
8
560
22
dBi Flange mounted via Front Thread
Optional Flange Mounted dBi
Page 14
When using a standpipe, fixed to the top of a vessel, ensure that the open
end of the standpipe is clear of any obstructions such as weld seams, gaskets
etc. in order to avoid unwanted signal returns.
If using standpipes which extend in to the vessel, beyond the blanking
distance, but not as far as the empty level, then the open end of the standpipe
should be cut to an angle of 45o.
When using the dBi Series Intelligent Transducer to measure ‘aggressive,
materials such as ‘alkaline’ and ‘acids’ it is recommended that either a
PVDF or an optional PTFE faced Flanged Transducer is used. Please
consult Pulsar for full availability of options.
Cable
The dBi Series Intelligent Transducer comes with a fitted integral cable, if
this cable is extended then the total capacitance must not exceed the limits
for the voltage applied.
Important Information
In the case of the Ex mb version the cable is fitted with an over
current protection device in the form of a fuse, please note that
under no circumstances should this fuse be removed. The fuse
must be fitted in the non-hazardous area,
Correct
standpipe
installation
Pipe should be free
of obstructions
such as weld seams
The maximum
level (100% of
Span) is inside the
Blanking Distance
Page15
Typical wiring for a Non-Hazardous location
The HART modem and PC or HART programmer are used to set up the operation
parameters for the dBi transducer. The output can either be as a 4-20mA current
giving level or distance or as a digital signal via a HART master.
The dBi transducers cable is a twisted pair with overall cable screen. The twisted
pair are red and black, connect the red to +ve and the black to –ve. The screen
should go to signal ground.
Loop Resistance
For two wire operation the maximum cable resistance allowable can be calculated
from the graph below. For example if an dBi Series Intelligent Transducer was
supplied from 24V, the maximum total cable resistance is 600 ohms, for a typical
77 ohm /km cable this would mean a maximum cable length of 600/77 = 7.8km,
remember this total cable resistance, so this figure has to be divided by 2 to give
3.9km max distance.
Page 16
Maximum cable resistance vs supply voltage.
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.
Preparation for Operation
Before switching on, check the following:
The dBi Series Intelligent Transducer is mounted correctly.
The power supply is correctly installed.
Page17
Maintenance
There is no user serviceable parts inside your dBi Series Intelligent
Transducer, if you experience any problems with the unit, then please
contact Pulsar Process Measurement for advice.
To clean the equipment, wipe with a damp cloth. Do not use any solvents on
the enclosure.
Hazardous Area Installation
Information specific to Hazardous Area Installation
(Reference European ATEX Directive 94/9/EC, Annex II, 1.0.6.)
The following instructions apply to equipment covered by certificate number
TRAC 12ATEX0022X (Ex ia) & TRAC 12ATEX0023X (Ex mb)
1. The equipment may be used with flammable gases and vapours with
apparatus groups IIC, IIB, and IIA with temperature classes; T1, T2, T3,
T4 maximum ambient temperature range -40oC to +80oC.
2. The equipment is only certified for use in ambient temperatures in the
range -40oC to +80oC and should not be used outside this range
3. Installation shall be carried out in accordance with the applicable code of
practice by suitably-trained personnel
4. Repair of this equipment shall be carried out in accordance with the
applicable code of practice.
5. Certification marking as detailed in drawing number
D-804-0957-B (Ex ia) & D-804-0994-A (Ex mb).
6. If the equipment is likely to come into contact with aggressive
substances, then it is the responsibility of the user to take suitable
precautions that prevent it from being adversely affected, thus ensuring
that the type of protection is not compromised.
Aggressive Substances - e.g. acidic liquids or gases that may attack
metals or solvents that may affect polymeric materials.
Suitable Precautions - e.g. regular checks as part of routine inspections
or establishing from the material’s data sheet that it is resistant to
specific chemicals.
Page 18
7. The certificate number has an ‘X’ suffix that indicates that the following
special condition of certification applies;
In the case of dBi transducer range due to the housing and labels being
non-conductive plastic care needs to be taken with regards electrostatic
charge. The equipment shall not be installed if the conditions are
conducive to the build up of electrostatic charge. Additionally the
equipment should only be cleaned with a damp cloth.
With the dBi Ex mb version a 100mA, 1500A breaking capacity fuse
must be fitted in the positive lead of the cable. The product is shipped
with this fuse in the cable, visible through the heat shrink at the wire end
of the cable
8. The manufacturer should note that, on being put into service, the
equipment must be accompanied by a translation of the instructions in
the language or languages of the country in which the equipment is to be
used and by the instructions in the original language.
Hazardous Area specific Power Supply and barrier Requirements
The dBi transducer operates from a DC supply of 10 –28V and will typically
draw less than 22mA.
In the case of the Ex ia version the unit must be powered from an
approved i.s. safety barrier or approved i.s. Power supply with the
following limits:
Uo <= 28V, Io <=162mA, Po <= 1.03W
In the case of the Ex mb version the unit must be powered from a power
supply and 100mA fuse (1500A breaking capacity) to give prospective
short current of 1500A. This fuse (100mA leaded Littlefuse series 242)
is fitted in the cable of the Ex mb version of dBi transdcuers. The power
supply should have the following rating:
Um = 28V
Page19
The dBi transducers cable is a twisted pair with overall cable screen. The
twisted pair are red and black, connect the red to +ve and the black to –ve.
The screen should go to signal ground.
Typical wiring for the two types of dBi transducers:
Page 20
Page21
Page 22
Page23
Chapter 3 How To Use Your dBi Series Intelligent Transducer
4 – 20 mA Device
The dBi Hart Intelligent Transducer can be used as an ‘out of the box’ 4 –
20mA device if this is the case then by default, when you switch the dBi
Series Intelligent Transducer on, the 4 – 20mA output will be proportional
to the level being seen, with respect to the maximum range and span of the
dBi model being used as detailed in the table below.
dBi 3
dBi 6
dBi 10
dBi 15
4 mA (Empty)
0% of Span
Distance from dBi
Face in metres
3.000
6.000
10.000
15.000
20 mA (Full)
100% of Span
Distance from dBi
Face in metres
0.125
0.300
0.300
0.500
Note
Customised factory calibration of Span is available; please contact Pulsar for
further details.
Important Information
When the dBi Series Intelligent Transducer is operated below 8mA then the
speed of response will decrease. See the following table for cycle times:
Page 24
Time in seconds between firing
For example – if using a dBi 6 and the target is causing a current draw of
5mA then the cycle time (the time between measurements is 2 seconds.
Any transducer drawing 9mA or above will have a cycle time of 1 second.
Accessing Parameters
In order to view or change parameters values one of the following methods
must be used:
Hart Commands
If familiar with the use of HART protocol and the dBi Series Intelligent
Transducer is connected to a HART modem then it can be programmed
following normal HART procedures.
Commands implemented by the dBi Series Intelligent Transducer are as
follows:
Universal
0, 1, 2, 3, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 38 and 48.
Common practice
33, 34, 35, 40, 41, 42, 45, 46, 47, 83, 89, 90, 111, 112 and 122.
dBi Hart PC Lite
Your dBi Series Intelligent Transducer comes complete with the dBI
HART PC Lite software contained on CD, which, when used with a HART
Modem, see Chapter 2 Installation for full details on how to connect the
modem, can be used to to carry out the programming of the dBi Series
Intelligent Transducer.
Page25
Insert the CD into the CD drive of the PC intended to be used to carry out
the programming of the dBi Series Intelligent Transducer and install the
software, following the on screen instructions.
Once the software is installed connect the computer via a convenient USB
port to the HART Modem. Double click the ‘dBi HART PC Lite’ icon,
installed on your desktop and the programme will open and you will see the
following screen:
Page 26
To connect to the dBi Series Intelligent Transducer ‘click’ on the ‘Search’
button which will then change to ‘Scanning’ and once a connection with a
device has been established it will change to ‘Connected’ and the ‘Status’
button will show ‘Connected’ and flash Green, if the dBi HART PC Lite
fails to connect please check the Comport Configuration as detailed on page
29. When using the dBi HART PC Lite software, keypad input can be
achieved by using a ‘mouse’ or similar device to place the cursor over the
relevant key followed by a ‘left’ click, with numeric detail being entered
directly from the PC keyboard.
Once dBi HART PC Lite has successfully connected you will see the
following display:
Connection
Page27
On the opening screen the following Information is available:
Live List
Gives details of all devices connected, if more than one device is present the
‘Live List’ will become a drop down box and the required device selected.
Poll Address
Gives the Poll Address of the selected Device.
Level
Gives value of the Level in the vessel in Measurement Units (P104)
mA %
Gives current value of the mA Output and how full the vessel is in
percentage.
Set Empty Distance
Allows the Empty Distance to be set.
Set Span
Allows the Span to be set which will determine the range of the 4 to 20mA
output, with 4mA representing 0% (empty) and 20mA representing 100%
(full).
Range
Shows the maximum range that can be measured, by the dBi Series
Intelligent Transducer, that is currently connected.
Bar Graph Display
Gives a graphical indication of the Empty Distance (P105) and Maximum
Span (P106) along with current level being measured.
Page 28
Configuration
Parameter Get/Set
Get:
Will read and display the current value of the parameter selected along with
the ‘units’ of measurement, where used, and the description of the parameter
selected. Select the desired parameter form the drop down ‘Parameter’ box
and ‘click’ ‘Get’
Page29
Set:
Allows the value of the selected parameter to be changed. Select the desired
parameter form the drop down ‘Parameter’ box enter required value in the
‘Value’ box and ‘click’ ‘Set’
For a full list of available parameters see Chapter 5 Parameter Guide.
4 – 20mA Trim
If the device connected to the mA output is out of calibration, and cannot be
calibrated, then the low and high current levels can be trimmed by altering
Set 4mA (P838Low Trim) and Set 20mA (P839 High Trim). To do this,
simply enter the value that ensures that 4 mA or 20 mA respectively are
shown on the remote device.
Communication Port Configuration
If the dBi HART PC Lite fails to connect to the dBi Series Intelligent
Transducer you may need to change the communications port that is being
used, to do this ‘click’ on the ‘Comport’ menu in the top menu bar and the
‘Comm Port Setup’ window will appear, select the appropriate
communications port and then close the window.
Page 30
Parameter Defaults
Factory Defaults
Factory Defaults
When first installing the dBi Series Intelligent Transducer, 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 Chapter 5 Parameter Guide.
Once you are satisfied with the installation, and the dBi Series Intelligent
Transducer 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 any
programming, required for the intended application. It is sensible to program
all of the required parameters at the same time. The system will be then setup.
Page31
Chapter 4 Getting Results With Your dBi Series Intelligent
Transducer
This chapter explains how to undertake the various functions of your dBi
Series Intelligent Transducer. Where specific parameters are used, consult
Parameter Guide in Chapter 5.
Setting up Your Application
Empty Distance
Empty Distance (P105) is the distance from the face of the transducer to
the material at the bottom of the vessel.
Span
Span (P106) is the distance from the empty level (0% full) to span (100%
full).
Near and Far Blanking
Near blanking (P107) is the distance from the face of the transducer that
the dBi Series Intelligent Transducer will not record a level nearer than. A
typical reason to increase this from the default value would be if you wish to
ignore close in obstructions.
Far blanking (P108) is the distance (as a percentage of empty level) beyond
the empty level that the dBi Series Intelligent Transducer will read, the
default is plus 20% of empty level. If you wish to monitor further than the
empty level, then increase this figure, so that the empty level plus the far
blanking figure (as % of empty level) is greater than the surface being
measured, within the capability of the transducer being used.
Using the 4-20 mA Output
The mA output can be used to monitor remotely what the dBi Series
Intelligent Transducer is measuring, so it can be displayed remotely,
integrated into a PLC, or used to generate a record using a chart recorder or
similar.
By default, the dBi Series Intelligent Transducer will provide a 4-20 mA
output that is proportional to level and can be overwritten as follows.
Page 32
By default, the 4-20 mA will represent the operational span of the dBi
model in use, with empty (0% full) = 4mA and full (100% of the operational
span) = 20mA, but you may wish to only represent a section of the
operational span. For example, the application may have an operational span
of 6 metres, but you may only wish to represent empty level to 5 metres. If
so, change P834 (Low Value) to 0, and P835 (High Value) to 5.0.
If the device connected to the mA output is out of calibration, and cannot be
calibrated, then the low and high current levels can be trimmed by altering
P838 (Low Trim) and P839 (High Trim). To do this, simply enter the
value that ensures that 4 mA or 20 mA respectively are shown on the remote
device. You can use the left/right menu keys to alter the value until the
correct reading is shown on the remote device, rather than typing in a value.
Setting Security Passcodes
A passcode is used to protect parameter entries and will be required when
accessing parameters with certain PC Software’s.
You can set a new passcode to prevent anyone changing any of your settings
within your dBi Series Intelligent Transducer. The default passcode is
1997, but this may be changed as follows.
Additional Information
The passcode is also used for remote access using certain PC Software’s, so
if this is being used, be sure to ensure any additional equipment using this
feature is changed accordingly.
Changing The Passcode
You can set the passcode to any number from 0000 to 9999. To do this,
select P922 which is the Passcode parameter which can be changed as
required.
Resetting Factory Defaults
If you need to restore parameters to their original factory settings, then
access parameter P930, which is the factory defaults parameter, change the
value to 1 and ENTER, all parameters, with the exception of the mA trims,
will be restored to the factory settings (including the DATEM trace) and on
completion.
Page33
Checking the Information Specific to your dBi Series Intelligent
Transducer
There are some parameters dedicated to each individual dBi Series
Intelligent Transducer, such as the software revision and the units serial
number.
Checking the Software Revision and Serial Number
If you need to identify the serial number of the unit or the current level of
software in your dBi Series Intelligent Transducer, the following
parameters can be used. Select parameter P926 to view the identity of the
current software revision or P928 for the serial number of the unit.
Page 34
Page35
Chapter 5 Parameter Guide
Parameter Listing
This chapter describes all of the parameters contained within the dBi
(HART) Series Intelligent Transducer.
Application
Operation
P100 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
Display shows the distance from the
transducer face to the surface.
2= Level (Default)
Display shows how full the vessel is.
3= Space
Display shows how empty a vessel is.
4= Volume
Display shows volume of material in the
vessel
P102 Material
This parameter should be set to the type of material being monitored.
Option
Description
1 = Liquid (Default)
Use for liquids and flat solid materials
2 = Solid
Solid material that is heaped or at an angle
3 = Closed Tank
Use for closed tanks or domed roofs.
Page 36
Distances
P104 Measurement Units
This parameter sets the units you want to use for programming and display
Option
Description
1 = metres
All units of measure are METRES
2 = cm
All units of measure are CENTIMETRES
3 = mm
All units of measure are MILLIMETRES
4 = feet
All units of measure are FEET
5 = inches
All units of measure are INCHES
P105 Empty Level
This parameter is to be set to the maximum distance from the face of the
transducer to the empty point, in P104 Measurement Units. Note this value
affects span as well, so should be set before span. Default: dBI 3 = 3.00m
(9.84 feet), dBi 6 = 6.00m (19.69 feet), dBi 10 = 10.00m (32.81 feet) and
dBi 15 = 15.00m (49.21 feet).
P106 Span
This parameter should be set to the maximum distance from the Empty
Level (P105) to the maximum material level. It is automatically set to be
equal to the Empty Level (P105) less the Near Blanking distance (P107),
when you set the empty level. Default dBi 3 = 2.80m (9.19 feet), dBi 6 =
5.70m (18.70 feet), dBi 10 = 9.70m (31.82 feet)and dBi 15 = 14.5m (47.57)
P107 Near Blanking Distance
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 version
of dBi Series Intelligent Transducer being used. It should not be set to less
than this figure, but can be increased.
dBi Version
Near Blanking Distance
dBi 3 metre
Default Blanking Distance = 0.125m (0.66 feet)
dBi 6 metre
Default Blanking Distance = 0.3m (0.98 feet)
dBi 10 metre
Default Blanking Distance = 0.3m (0.98 feet)
dBi 15 metre
Default Blanking Distance = 0.5m (1.64 feet)
Page37
P108 Far Blanking Distance
This is the distance (as a percentage of empty level) beyond the empty
point that the unit will be able to measure, and the default is pre-set to 10%
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.
Data Logs
The data log parameters contains the following information.
Temperature
The following parameters give information on temperature conditions seen
by the Temperature source (P852) in ºC. All of these parameters are read
only and cannot be changed, though if P852 is changed they will be reset.
P580 Minimum Temperature
This parameter displays the minimum temperature recorded.
P581 Minimum Temperature Date
This parameter displays the date when the minimum temperature was
recorded.
P582 Minimum Temperature Time
This parameter displays the time when the minimum temperature was
recorded.
P583 Maximum Temperature
This parameter displays the maximum temperature recorded.
P584 Maximum Temperature Date
This parameter displays the date when the maximum temperature was
recorded.
P585 Maximum Temperature Time
This parameter displays the time when the maximum temperature was
recorded.
Page 38
P586 Current Temperature
This parameter displays the current temperature.
Transducer Power Information
The following parameters provide information on when the dBi Series
Intelligent Transducer was last powered down and how long it had run for.
P940 Number of Starts
This parameter displays the number of times that the unit has been powered
since leaving the factory.
P941 Last Power Off Date
This parameter displays the last date on which the power was removed from
the unit.
P942 Last Power Off Time
This parameter displays the last time on which the power was removed from
the unit.
P943 Last Run Time (minutes)
This parameter displays how long the unit had been running, in minutes,
prior to the last power down.
P944 Last Run Time (hours)
This parameter displays how long the unit had been running, in hours, prior
to the last power down.
P945 Total Runtime (hours)
This parameter displays the accumulated total number of hours that the unit
has been in operation (powered up) since leaving the factory.
Page39
Volume
Conversion
P600 Vessel Shape
This parameter determines which vessel shape is used when utilising
“Volume Conversion”.
The choices are as shown in the table below, along with the dimensions that
are required to be entered (P601-P603).
Vessel Shape
P600 Value
Dimensions
Required
P600=0 Cylindrical
Flat base (Default)
Cylinder diameter
P600=1=Rectangular
Flat base
Width and Breadth
P600=2 Cylindrical
Cone base
Cylinder diameter
and height of
bottom
P600=3 Rectangular
Pyramid base
Width and Breadth
of rectangular
section and height
of bottom
P600=4 Cylindrical
Parabola base
Cylinder diameter
and height of
bottom
P600=5 Cylindrical
Half-sphere base
Cylinder Diameter
Page 40
Vessel Shape
P600 Value
Dimensions
Required
P600=6 Cylindrical
Flat sloped base
Cylinder diameter
and height of
bottom
P600=7 Rectangular
Flat sloped base
Width and Breadth
of rectangular
section and height
of bottom
P600=8 Horizontal
cylinder with flat ends
Cylinder diameter
and tank length
P600=9 Horizontal
cylinder with
parabolic ends
Cylinder diameter,
length of one end
section, and tank
length
P600=10 Sphere
Sphere diameter
P600=11 Universal
Linear
No dimensions
required, level and
volume breakpoints
used.
P600=12 Universal
Curved
No dimensions
required, level and
volume breakpoints
used.
Page41
P601-P603 Vessel Dimensions
These three parameters are used to enter the dimension required to calculate
the volume. The dimensions required are as shown below.
Vessel Shape
P601
P602
P603
P600=0
Cylindrical Flat base
Cylinder
Diameter
P600=1
Rectangular Flat base
Width of
rectangle
Breadth of
rectangle
P600=2
Cylindrical Cone base
Height of
base
Cylinder
Diameter
P600=3
Rectangular Pyramid base
Height of
base
Width of
rectangle
Breadth of
rectangle
P600=4
Cylindrical Parabola base
Height of
base
Cylinder
Diameter
P600=5
Cylindrical Half-sphere base
Cylinder
Diameter
P600=6
Cylindrical Flat sloped base
Height of
base
Cylinder
Diameter
P600=7
Rectangular Flat sloped base
Height of
base
Width of
rectangle
Breadth of
rectangle
P600=8
Horizontal cylinder with flat
ends
Length of
Cylinder
Cylinder
Diameter
P600=9
Horizontal cylinder with
parabolic ends
Length of
Cylinder
Cylinder
Diameter
Length of
one end
section
P600=10
Sphere
Sphere
Diameter
P604 Calculated Volume
This parameter displays the maximum volume that has been calculated by
the dBi Series Intelligent Transducer and is a Read Only parameter. The
volume displayed will be shown in cubic meters and is the total volume
available between empty level (P105) and 100% of span (P106).
Page 42
P605 Volume Units
This parameter determines the units that will be used in calculating volume
conversion. It is used in conjunction with P607 (maximum volume), please
note that there is no provision for the volume units descriptor to be shown
on the display.
The choices are:
Option
Description
0 = No Units
Volume will be totalised with no units
1 = Tons
Volume will be totalised in Tons
2 = Tonnes
Volume will be totalised in Tonnes
3 = Cubic metres
Volume will be totalised in cubic metres
4 = Litres
Volume will be totalised in litres
5 = UK Gallons
Volume will be totalised in UK Gallons
6 = US Gallons
Volume will be totalised in US Gallons
7 = Cubic feet
Volume will be totalised in cubic feet
8 = Barrels
Volume will be totalised in barrels
P606 Correction Factor
This parameter is used to enter a correction factor, when required, such as
the specific gravity of the material so that the volume calculated is relative
to the actual amount of material that can be contained between empty level
(P105) and 100% of span (P106). Default = 1
P607 Max Volume
This parameter displays the actual maximum volume that has been
calculated by the dBi Series Intelligent Transducer, i.e. P604 Calculated
Volume x P606 Correction Factor, and is a Read Only parameter. The
volume displayed will be shown in P605 Volume Units and is the total
volume available between empty level (P105) and 100% of span (P106).
Page43
Breakpoints
P610-P641 Level/Volume Breakpoints
These parameters are used to create a profile of the vessel when P600=11
(universal linear) or P600=12 (universal curved). You should enter
breakpoints in pairs, a reading for level and its corresponding volume. The
more pairs you enter, the more accurate the profile will be. In the case of
universal linear, then enter the level/volume at each of the points where the
vessel changes shape. In the case of the universal curved, enter values
around each arc tangent, as well as at the top and bottom.
You must enter at least two pairs, and you can enter up to 16 pairs.
Universal Linear (P600=11)
This volume calculation creates a linear approximation of the level/volume
relationship, and works best if the vessel has sharp angles between each
section.
Level
Volume
You should enter a level/volume breakpoint for each place where the vessel
changes direction, and numerous where the section is slightly curved
(mostly linear, but has got a small arc). You can enter any number of pairs
between 2 and 16.
Page 44
Universal Curved (P600=12)
This volume calculation creates a curved approximation of the level/volume
relationship, and works best if the vessel is non-linear, and there are no
sharp angles.
Level
Volume
You should enter 2 level/volume breakpoints at the minimum and maximum
levels, and several for each place where the vessel has got an arc. You can
enter any number of pairs between 2 and 16.
P696 Reset Breakpoints
This parameter allows the resetting, to the default value, of all previously set
breakpoints (P610-673), without having to access them individually. When
it is necessary to reset or amend particular breakpoints this can be achieved
by directly accessing the desired parameter (P610-673) and changing as
required.
P697 Number of Breakpoints Set
This parameter allows you to review the number of breakpoints that have
been set, without the need to access each individual one in turn, this is a
“Read Only “ parameter and no values can be entered.
Page45
mA Output
P834 mA Low Level
This parameter sets, in Measurement Units (P104), the value of ‘level’,
‘distance’ or ‘space’, depending on the selected Mode of Operation (P100),
at which 4mA will occur.
P835 mA High Level
This parameter sets, in Measurement Units (P104), the value of ‘level’,
‘distance’ or ‘space’, depending on the selected Mode of Operation
(P100), at which 20 mA output will occur.
P838 mA Low Trim
If the device you are connected to is not calibrated, and not showing the low
value, then you can trim it using this parameter. You can either type in the
offset directly, or use the arrow keys to move the output up and down until
you get the expected result on the device that is connected.
P839 mA High Trim
If the device you are connected to is not calibrated, and not showing the
high value, then you can trim it using this parameter. You can either type in
the offset directly, or use the arrow keys to move the output up and down
until you get the expected result on the device that is connected.
P808 Fail-safe Mode
By default, if a fail-safe condition occurs, then the display, relays and the
mA output are held at their last known values until a valid reading is
obtained.
If required, then you can change this so that the unit goes to high (100% of
span), or low (empty) as follows:
Option
Description
1 = Known (Default)
Remain at the last known value
2 = High
Will fail to the high value (100% of Span).
3= Low
Will fail to the low value (empty)
4 = Very High
Will fail to an output value of 22mA
5 = Very Low
Will fail to an output value of 3.75mA
Page 46
P809 Fail-safe Time
In the event of a fail-safe condition occurring the fail safe timer determines
the time before fail-safe mode is activated. Default = 2.00 mins
If the timer activates, the unit goes into fail-safe, as determined by P808,
(Display and P840 (mA Output). When this happens, you will see the
message “LOE!” on the display.
When a valid measurement is obtained then the display, relays and mA
output will be restored and the timer is reset.
Compensation
P851 Measurement Offset
The value of this parameter is added to the measured distance, in
Measurement Units (P104).
This Offset will be added to the level, as derived from the transducer, and
will affect everything including the reading on the display, the relay
setpoints and the mA output.
P852 Temperature Source
Default = 1
This parameter determines the source of the temperature measurement. By
default it is set to internal (transducer) (P852=1), which will automatically
detect the temperature from the transducer. If for any reason, no temperature
input is received, then the Fixed Temp value is used, as set by P854.
The temperature source can be specifically set as follows:
Option
Description
1 = Internal (Default)
Always uses temperature reading from
transducer.
3 = Fixed
Always uses fixed temperature (P854)
P854 Fixed Temperature
This parameter sets the temperature, in degrees centigrade to be used if
P852 (Temperature Source) =3. Default = 20oC
Page47
P860 Sound Velocity
This option allows for the velocity of sound to be changed according to the
atmosphere the transducer is operating in. By default the velocity is set for
342.72m/sec which is the speed of sound travelling in air at a temperature of
20oC.
The table below gives details of the velocity of sound in various gaseous
atmospheres In all cases the velocity indicated is that in a 100% gaseous
atmosphere at 0oC. In atmospheres less than 100% it may be necessary to
check the level indicated at near empty and near full and compare with the
actual level, several times, then adjust the Sound Velocity accordingly to
obtain an accurately displayed reading.
Gas
Sound Velocity
Chlorine
206 m/sec
Argon
308 m/sec
Oxygen
316 m/sec
Air
331.5 m/sec
Ammonia
415 m/sec
Methane
430 m/sec
Helium
435 m/sec
Neon
965 m/sec
P645 Vapour Temperature Compensation
The sound velocity in air increases or decreases at a uniform rate of
60cm/sec. per oC, however in atmospheres other than air it will change at a
different rate.
This option allows the rate of change in cm/sec. per oC to be set according to
the atmosphere and temperature present. The level indicated, should be
compared with the actual level, several times, then Vapour Temperature
Compensation adjusted accordingly, to obtain an accurately displayed
reading. Default = 60 cm/sec. per oC
Page 48
Stability
Damping
Damping is used to damp the display, to enable it to keep up with the
process but ignore minor surface fluctuations.
P870 Fill Damping
This parameter determines the maximum rate at which the unit will respond
to an increase in level. It should be set slightly higher than the maximum
vessel fill rate. Default = 10.000 metres/minute (32.81 feet/minute)
P871 Empty Damping
This parameter determines the maximum rate at which the unit will respond
to a decrease in level. It should be set slightly higher than the maximum
vessel empty rate. Default = 10.000 metres/minute (32.81 feet/minute)
Filters
P881 Fixed Distance
This parameter determines the width of gate to be used in tracking an echo
and under normal circumstances will not require changing, but it can be
increased in the cases where the surface is moving extremely fast (in excess
of 10m/min) to ensure smooth processing of the changing level.
P884 Peak Percentage
When P102 = 2 (Solids), this parameter can be used to determine the point
at which the the measurement is taken, within the established gate of the
selected echo, in order to compensate for any error that maybe caused by
“angles of repose” presented by the way the material settles. Please consult
Pulsar, for further information and assistance on changing the value of this
parameter.
System
The following three parameters do not affect how the unit performs, but details,
contained in them, may be required, by Pulsar, when making technical
enquiries.
Page49
Password
P921 Enable Code
Enables the passcode (P922), which means the passcode must be entered
to go into program mode. If disabled (set to 0), then no passcode is
required, and pressing ESC and ENTER button simultaneously will allow
entry into the program mode.
P922 Passcode
This is the passcode that must be used to enter program mode. The default
is 1997, but this can be changed to another value.
System Information
P926 Software Revision
This parameter will display the current software revision.
P927 Hardware Revision
This parameter will display the current hardware revision. It is read only,
and cannot be changed.
P928 Serial Number
This parameter will display the serial number of the unit.
P930 Factory Defaults
This parameter resets all parameter values to the original Factory Set values
that were installed when the unit was tested, before despatch to you.
To reset parameters, Set P930 to 1.
Date & Time
The date and time is used, to control specific relay functions and date stamp
certain events that are contained in the Data Logs. It is also used in
conjunction with the system watchdog that keeps an eye on the times the
unit has started.
P931 Date
This parameter display the current date, in the format as set by P933 (Date
Format), and can be reset if required.
P932 Time
This parameter displays the current time and can be reset if required, in the
format HH:MM (24-hour format). This is set initially at the factory for UK
time.
Page 50
LOE Save Trace
P950 Save DATEM Trace on LOE
When enabled this parameter will ensure that in the event of the unit going
into a LOE situation a trace at the time of the LOE occurrence is saved for
future reference.
Option
Description
0 = Off
Feature is disabled and in the event of LOE
echo trace will NOT be saved.
1 = Enable (Single Trace)
In the event of a LOE situation an echo
trace WILL be saved and stored for future
reference. Once a LOE trace has been
saved no further traces will be taken
2 = Enable Overwrite
(Default)
In the event of an LOE event occurring any
previous trace will be overwritten and the
last LOE trace saved.
DATEM
P020 Set DATEM
This parameter allows DATEM to be reset to its default value. To reset DATEM
to its default value set parameter value to 1, the trace will then be set to its default
value and then update as normal.
P021 Set Dist
Allows the user or service personnel to determine which echo is to be displayed.
On start up, if the unit displays an incorrect reading then simply enter the distance
from the transducer to the required level and, if an echo is present at this point,
the Gate will establish itself around the chosen echo, DATEM will update in front
of the Gate and reference out any other unwanted echoes.
It should be noted that DATEM will reset to default values whilst performing this
function, and reform itself once it has selected an echo.
Enter distance from the face of transducer to the target in units of measurement
P104
Values: Min. 0.000, Max. 99.00
Page51
P905 Peak Clearance
This parameter is used to set the “height” above which the DATEM trace
will “stand off” from around unwanted echoes such as obstructions. Please
consult Pulsar for further information and assistance on changing the value
of this parameter.
P906 Side Clearance
This parameter is used to set the “distance” by which the DATEM trace will
“stand off” from around unwanted echoes such as obstructions. Please
consult Pulsar for further information and assistance on changing the value
of this parameter.
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Page53
Chapter 6 Troubleshooting
This section describes many common symptoms, with suggestions as to
what to do.
Symptom
What to Do
Transducer not firing.
Check power supply
Unit indicates a “L0E”
situation.
No valid echo being received and unit
has gone into fault condition. Check
material level is not out of range,
sensor is perpendicular to material
surface.
Incorrect reading being
obtained for current level.
Measure actual distance from
transducer face to surface of material.
Access P21, via PC Software type in
the measured distance, and Set
Parameter.
4-20ma current fixed even
though level is changing.
Poll address is above 0, and is in multi
drop mode.
Material level is consistently
incorrect by the same amount.
Check empty level (P105) correctly
entered.
Page 54
Parameter Record
APPLICATION
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P100
Mode
2 = Level
P102
Material
1 = Liquid
P104
Measurement Units
Model Dependant
P105
Empty Level
Model Dependant
P106
Span
Model Dependant
P107
Near Blanking
Model Dependant
P108
Far Blanking
20%
DATA LOGS
Temperature
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P580
Minimum Temperature
Read Only
P581
Min Temperature Date
Read Only
P582
Min Temperature Time
Read Only
P583
Maximum Temperature
Read Only
P584
Max Temperature Date
Read Only
P585
Max Temperature Time
Read Only
P586
Current Temperature
Read Only
Transducer Power Information
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P940
Number of Starts
Read Only
P941
Last Power Off Date
Read Only
P942
Last Power Off Time
Read Only
P943
Last Runtime Minutes
Read Only
P944
Total Runtime Hours
Read Only
Page55
VOLUME
Conversion
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P600
Vessel Shape
0 P601
Vessel Dimension 1
0.00 P602
Vessel Dimension 2
0.00 P603
Vessel Dimension 3
0.00 P604
Calculated Volume
Read Only
P605
Volume Units
Model Dependant
P606
Correction Factor
1 P607
Max Volume
Read Only
Breakpoints
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P610
Level Breakpoint 1
0.00 P611
Volume Breakpoint 1
0.00 P612
Level Breakpoint 2
0.00
P613
Volume Breakpoint 2
0.00
P614
Level Breakpoint 3
0.00
P615
Volume Breakpoint 3
0.00
P616
Level Breakpoint 4
0.00 P617
Volume Breakpoint 4
0.00
P618
Level Breakpoint 5
0.00
P619
Volume Breakpoint 5
0.00
P620
Level Breakpoint 6
0.00
P621
Volume Breakpoint 6
0.00 P622
Level Breakpoint 7
0.00 P623
Volume Breakpoint 7
0.00
P624
Level Breakpoint 8
0.00
P625
Volume Breakpoint 8
0.00
P626
Level Breakpoint 9
0.00
P627
Volume Breakpoint 9
0.00
P628
Level Breakpoint 10
0.00 P629
Volume Breakpoint 10
0.00
P630
Level Breakpoint 11
0.00
P631
Volume Breakpoint 11
0.00
P632
Level Breakpoint 12
0.00
P633
Volume Breakpoint 12
0.00
P634
Level Breakpoint 13
0.00
Page 56
P635
Volume Breakpoint 13
0.00
P636
Level Breakpoint 14
0.00
P637
Volume Breakpoint 14
0.00
P638
Level Breakpoint 15
0.00
P639
Volume Breakpoint 15
0.00 P640
Level Breakpoint 16
0.00
P641
Volume Breakpoint 16
0.00
P696
Reset Breakpoints
0
P697
Number of B’points Set
Read Only
mA OUTPUT
Output
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P834
Low Level
0.000 P835
High Level
Model Dependant
P838
Low Trim
0.00 mA
P839
High Trim
0.00 mA
P808
Fail Mode
1 = Known
P809
Fail Time
2.0 mins
Fail Mode
Parameter Details
Entered Values
P808
Fail Mode
1 = Known
P809
Fail Time
2.0 mins
COMPENSATION
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P851
Measurement Offset
0.000 P852
Temperature Source
1 = Automatic
P854
Fixed Temperature
20.00 Deg. C
P860
Sound Velocity
342.72 m/sec
P645
Vapour Temp. Comp.
60cm/sec per oC
Page57
STABILITY
Damping
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P870
Fill Damping
Model Dependant
P871
Empty Damping
Model Dependant
Filters
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P881
Fixed Distance
0.2 metre
P884
Peak Percentage
50%
SYSTEM
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P921
Enable Code
1 = Yes
P922
Passcode
1997
P926
Software Revision
Read Only
P927
Hardware Revision
Read Only
P928
Serial Number
Read Only
P950
Save Trace on LOE
2
DATEM
Parameter Details
Entered Values
No.
Description
Default
1 2 3 4 5
P905
Peak Clearance
80 millivolts
P906
Side Clearance
0.0 6metres
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