Pulsar ULTRA TWIN User manual

ULTRA Series

SERVICE MANUAL

PULSAR ULTRA SERIES

SERVICE PARAMETERS (FIFTH EDITION REV 1)

June 2016

COPYRIGHT

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 the 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 the 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.

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 Business Centre

Sandy’s Road

Malvern

Worcestershire

WR14 1JJ

United Kingdom

PO Box 5177

Niceville

FL 32578 - 5177

USA

Tel: + 44 (0) 870 6039112

Fax: + 44 (0) 870 6039114

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.u[email protected]m (general

information)

e-mail: support.usa@ pulsar-pm.com

(product support)

CONTENTS

About Service Parameters ...................................................................................................................................... 1

DATEM overview .................................................................................................................................................. 3

Transducer 1 Parameters ........................................................................................................................................ 7

P020 Set DATEM 1 ........................................................................................................................................ 7

P021 Set Dist 1 ................................................................................................................................................ 9

P024 Num Pings 1 ......................................................................................................................................... 10

Transducer 2 Parameters ...................................................................................................................................... 11

P030 Set DATEM 2 ...................................................................................................................................... 11

P031 Set Dist 2 .............................................................................................................................................. 11

P034 Num Pings 2 ......................................................................................................................................... 11

Echo Control ......................................................................................................................................................... 13

P040 Fast Response. ...................................................................................................................................... 13

P041 RingDown Loss ................................................................................................................................... 14

P042 Display Resolution ............................................................................................................................... 14

P043 Breakpoint ............................................................................................................................................ 14

P044 Slope ..................................................................................................................................................... 15

P045 Num Averages ..................................................................................................................................... 15

P047 Outside Count ...................................................................................................................................... 15

P048 Gate Lock ............................................................................................................................................. 16

P049 Scale First ............................................................................................................................................. 16

Draw / Inflow ........................................................................................................................................................ 17

P150 Pump Inflow ......................................................................................................................................... 17

P151 Pump 1 Initial Draw ............................................................................................................................. 17

DATEM Flags....................................................................................................................................................... 19

P064 Near Band............................................................................................................................................. 19

P065 Near Jump ............................................................................................................................................ 19

P067 Use First (Software Revisions prior to 3.6.0) ..................................................................................... 19

P067 Choose Peak (Software Revisions from 3.6.0) ................................................................................... 20

Best ......................................................................................................................................................... 20

Largest .................................................................................................................................................... 20

First ......................................................................................................................................................... 20

P071 Update DATEM .................................................................................................................................. 20

P078 Use Temp ............................................................................................................................................. 21

P079 Use Gate ............................................................................................................................................... 21

P080 Lost Lock.............................................................................................................................................. 21

Ultra Sound ........................................................................................................................................................... 23

P081 Near Loss.............................................................................................................................................. 23

P082 Far Loss ................................................................................................................................................ 23

P083 Loss Change ......................................................................................................................................... 23

P084 Jump CutOff (Software Revisions from 3.6.0 to 6.3.7) ..................................................................... 24

P084 Mid Loss (from software revisions 6.8.?) ........................................................................................... 24

Loss Limit Values .................................................................................................................................. 24

Debug Level .......................................................................................................................................................... 25

P086 Ping Delay (From Software Revision 6.4.1)...................................................................................... 25

P087 Fail Time 2 ........................................................................................................................................... 25

P088 Hard Default ......................................................................................................................................... 25

P099 System Type (From Software Revision 6.9.0) ................................................................................... 26

DATEM Custom .................................................................................................................................................. 27

P109 Start Point ............................................................................................................................................. 27

P110 Middle (mV) ........................................................................................................................................ 27

P111 End Point .............................................................................................................................................. 28

P112 Min DATEM ....................................................................................................................................... 28

Other Useful Parameters ...................................................................................................................................... 29

Tariff Guard Control ..................................................................................................................................... 29

P113 Rate Sampling (from Soft Revision 4.6.3.1 (5.7.8 released)) .................................................... 29

P114 Array Count .................................................................................................................................. 29

P115 Rate Validate ................................................................................................................................ 29

Comms / Logging Board .............................................................................................................................. 30

P141 Serial to Comms Board................................................................................................................ 30

P142 Reset Comms Board .................................................................................................................... 30

P358 Log Time ...................................................................................................................................... 30

Pump Control ................................................................................................................................................ 31

P194 – P199 Pumping Rate .................................................................................................................. 31

P359 Maximum Pumps (From Software Version 6.3 to 6.4.5 ............................................................ 31

P361 – P362 Max Pumps on (groups 1 & 2) (From S/W ver. 6.7.3) .................................................. 31

Totalisers ........................................................................................................................................................ 32

P798 Max Flow Cut Off (From Soft Revision 6.4.2 (6.7.3 released)) ................................................ 32

Display ........................................................................................................................................................... 32

P817 Auxiliary Display Offset (From Soft Rev 6.5 (6.7.3 released)) ................................................. 32

Temperature Calibration ............................................................................................................................... 33

P855 – P856 External Temp Scale (From Soft Rev 6.6.9) .................................................................. 33

P857 – P858 Temp Cal (transducer 1 – transducer 2) ......................................................................... 33

P859 Temp Average .............................................................................................................................. 33

Sound Velocity Calibration ........................................................................................................................... 34

P861 – P862 Calibrate Distance (xdr1 – xdr2) (From S/W rev 6.8.0) ................................................ 34

Filters ...................................................................................................................................................... 34

P102 Material......................................................................................................................................... 34

P880 Gate Mode .................................................................................................................................... 34

P881 Fixed Distance .............................................................................................................................. 35

P882 Process Filter (From Software Revision 6.6 (6.7.3 released)) ................................................... 36

P884 Peak Percentage ........................................................................................................................... 37

Reform ........................................................................................................................................................... 38

P050 = Reform ...................................................................................................................................... 38

P051 = Attack Coefficient ..................................................................................................................... 38

P052 = Release Coefficient ................................................................................................................... 38

P905 & P915 Sensitivity (Xd1 & Xd2) ................................................................................................ 39

P906 & P916 Side Clearance (Xd1 & Xd2) ........................................................................................ 40

Remote Communicator ................................................................................................................................. 41

P063 Kiss Required (From Software Revision 6.9.2) ......................................................................... 41

P089 Kiss Enable (From Software Revision 6.4.1 to 6.9.1) ................................................................ 41

Applications ................................................................................................................................................... 42

Application 1 Enclosed Tank ................................................................................................................ 43

Application 2 Turbulent Liquid Surface ............................................................................................... 45

Application 3 Fast Moving Solids ........................................................................................................ 47

Application 4 Silo Level (Solids) .......................................................................................................... 49

Fault Finding .................................................................................................................................................. 53

Page 1

About Service Parameters

The following parameters can only be accessed via the following passcode

552621 and can be used to modify the DATEM Echo Processing Algorithms in

particularly arduous applications.

Further parameters allow changes to parameters specific to communications and

other hardware functions.

Care and caution should be exercised when changing any of these parameters

and any such changes should only be undertaken by, or under the guidance, of

an experienced Service Engineer.

Direct Access.

In order to access parameters directly use the following procedure.

Some parameters are not part of the menu system and can only be accessed

directly. To do this use the cancel key until there are no digits in the main

display then key in the parameter number and press enter.

Page 2

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Page 3

DATEM overview

Digital Adaptive Tracking of Echo Movement, or DATEM, is a powerful

algorithm unique to Pulsar’s ultra range of products. Care should always be taken

when adjusting and analysing echo profiles, if in doubt, please contact Pulsar

technical department.

Fig 1: A typical echo trace.

Fig 1 (above) is a typical echo profile showing all four traces from the unit, the

gate is wrapped around the echo with the blue marker indicating the distance. The

signal strength is good and there are no competing echoes in front of the true

echo.

Page 4

Fig 2: Raw echo plus near and far blanking.

The shaded left hand side of the screen shows the near blanking and the shaded

right hand part of the screen the ‘far blanking’ the ultra unit will measure 20%

further than its programmed empty distance as a factory setting, this is known as

‘far blanking’. The near blanking is the area just in front of the transducer where

measurement is not possible.

Near Blanking

Far Blanking

Page 5

Fig 3: Describing ringdown and echoes.

The red trace is the echo signal return, the horizontal scale is distance to target in

metres and the vertical scale is signal strength return in millivolts. The echo

above is approx 3.8m from the transducer and has signal strength of 480mv.

Ringdown

Echo

Secondary

Echo

Page 6

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Page 7

Transducer 1 Parameters

P020 Set DATEM 1

P020 can be accessed via the Operator Password (Default 1997).

Option

Description

0 = Quit

Leave P020 without any change to the present

DATEM trace.

1 = Capture

DATEM trace of entire visible range taken and

all echo returns referenced out.

2 = Default

DATEM trace will assume default value.

3 = Def Reset

Default DATEM to factory settings.

4 = Set Min DATEM

When set, DATEM levels at this point will be

accepted as a minimum.

This parameter allows DATEM to be reset to its default value or alternatively

allows the user to “Capture” a DATEM trace. It should be noted that when using

option 1 = Capture, all echoes seen will be eliminated by DATEM.

Option 1 = Capture

The Capture function is particularly useful when setting up applications where the

target goes out of range and the echo is lost. For example chemical or product

tanks where the bottoms are conical or parabolic and the transducer is not

centrally located on the top of the tank.

When the tank is empty a Capture can be done, by performing a Capture all

unwanted echoes from noise or obstructions will be referenced out and this will

leave the true echo visible, when it comes back into range.

Default = 0

Page 8

The echo profiles below show the effect of Capture, the ‘Gate’ has been removed

for clarity.

Fig. 1.

Empty tank, the unit will pick up on the first echo after initial switch on.

Fig. 2.

Empty tank after a Capture. Unit will show Loss of Echo.

Page 9

Fig. 3.

Echo profile after product has entered tank.

P021 Set Dist 1

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.

P021 can also be accessed via the Operator Password (Default 1997).

Options: Enter distance from the face of transducer to the target in units of

measurement P104

Values: Min. 0.000

Max. 99.00

Default = 0.000

Page 10

P024 Num Pings 1

Determines the number of times the transducer is “pinged” in each “shot”, during

every processing cycle. In applications where there is a high level of noise or

attenuation due to dust or angles of repose, increasing the number of “pings” may

result in a larger “Average” trace and thereby increase echo processing reliability.

It should be noted that when increasing the number of “pings” processing times

will increase slightly and when reducing the number of “pings” per “shot”

slightly faster processing times will be obtained.

Options: Enter the Number of “pings” required to be taken during each

processing cycle.

Values: Min. 1

Max. 32

Default = 4

Page 11

Transducer 2 Parameters

These parameters are identical to those for transducer 1 and are used to carry out

the same functions on units and applications utilising a second transducer.

P030 Set DATEM 2

See P020

P031 Set Dist 2

See P021

P034 Num Pings 2

See P024

Page 12

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Page 13

Echo Control

P040 Fast Response.

From Soft Revision 4.6.3.5 (5.7.8 released)

Note* This parameter is ‘direct access only’ (see page 1).

This parameter sets some internal values to enable the unit to operate at a faster

speed.

Options

0 = No

1 = Yes

Notes:

By setting various other parameters to their appropriate value for a quick moving

application, you can further increase the response time of the instrument.

These could include:

P24 (number of pings) = 1

P43 (gain breakpoint) = 90

P45 (number of averages) = 1

P71 (update datem) = 0

P79 (gate) = 0

P870 (fill damping) = 99999

P871 (empty damping) = 99999

Care should be undertaken when changing the above parameters as they could

affect the stability of the reading if applied incorrectly. Only adjust when advised

by a Pulsar Engineer.

Default = 0

Page 14

P041 RingDown Loss

This parameter sets the threshold level in milli-volts within the the ringdown area

of the transducer. The echo must exceed this threshold above the DATEM trace,

before it is recognised as a valid echo. Typically this value will be applied to the

first 0.5m in front of the transducer.

Values Min = 0.00

Max = 99.99

P042 Display Resolution

This parameter determines the rate at which data is transferred from the unit to

the PC Ultra display when receiving echo traces (regular echo = yes). A lower

figure gives increased definition but is slower and visa-versa. Please seek advice

from Pulsar before carrying out any adjustment.

Values Min = 1

Max = 32

P043 Breakpoint

The gain starting point in meters, for signal amplitude decay compensation. This

is similar to time varied gain. Used in conjunction with P44 to establish gain

levels. See table below for details.

Default = 7.00 (70mv)

Default = 8

Default = Transducer Dependant

Transducer Type

db3

db6

db10

db15

db25

db40

Breakpoint (metres)

1

5

7

13

20

Gain (slope/angle)

5

3

5

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