Milltronics MultiRanger Plus Instruction Manual

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MULTIRANGER

PLUS

PROGRAMMABLE

LEVEL SYSTEM

Instruction Manual

PL-443

June 1995

33454430 PRR 1.1

Table of Contents

General Information

Important 1 - 1 MultiRanger Plus 1 - 1

Specifications

MultiRanger Plus 2 - 1 Programmer 2 - 2 Transducer 2 - 2 Temperature Sensor 2 - 2 Current Output Isolator 2 - 2 Cabling 2 - 2

Installation

Multiranger Plus 3 - 1 Outline and Mounting 3 - 1 Circuit Board Layout 3 - 2 Interconnection 3 - 3 Installing the Transducer 3 - 3 Selecting Temperature Source 3 - 4 Current Output 3 - 4 Current Output Isolator 3 - 5 Synchronization 3 - 6 Power Connections 3 - 7 Programmer 3 - 8

Start Up

General 4 - 1 Programmer Keypad Run Mode 4 - 2

Legend 4 - 4 Parameter Entry 4 - 4 Common Display Messages 4 - 6

PL-443 i

Program Mode 4 - 3

Functional

Transceiver 5 - 1 Damping and Process Rate 5 - 1 Temperature Compensation 5 - 2 Sound Velocity 5 - 2 Blanking 5 - 3 Agitator Discrimination 5 - 4 Relays General 5 - 4

Function Alarm 5 - 5 Pump 5 - 6 Miscellaneous 5 - 7

Analog Output 5 - 10

Applications 6 - 1

Simple Level Application 6 - 2 Pump Control Applications 6 - 4

Pump Run-On 6 - 8 Pump Totalizer Application 6 - 10 Volume Application 6 - 14 Common Tank Shapes 6 - 15 Custom Design Tanks 6 - 16

Compensation 6 - 19 Differential Level Application 6 - 22 OCM Applications 6 - 26

Single Exponential 6 - 33

Palmer-Bowlus 6 - 37

H Flumes 6 - 38

Other 6 - 39 Applications with Standpipes 6 - 42

PL-443 ii

Parameter Description

Parameters 7 - 1

Troubleshooting

General 8 - 1 Oscilloscope 8 - 1 Troubleshooting Guide 8 - 3

Maintenance

Maintenance 9 - 1

Appendices

Sound Velocities 10 - 1 Glossary 10 - 2 Alphabetical Parameter Listing 10 - 4

PL-443 iii

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GENERAL INFORMATION

IMPORTANT

First and foremost it is essential that this manual be read and understood before installation and start up of the MultiRanger Plus.

"Applications" provides a general description of the common applications found in industry and illustrates them with examples. It is suggested that you refer to the sub-section which most suits your application. The programming of the MultiRanger Plus can be optimized by referring to Parameter Description or Appendices \ Alphabetical Parameter Listing.

THE MULTIRANGER PLUS

The MultiRanger Plus is a multi-purpose level monitoring system consisting of a MultiRanger Plus in a CSA type 4 enclosure, a programmer and an ultrasonic transducer.

The MultiRanger Plus emits an ultrasonic pulse via the transducer. The echo is reflected from the material and received by the transducer. The echo is processed by the MultiRanger Plus and the time at which the ultrasonic pulse hits the level or target is extracted and compared to the time at which it was sent. The time differential is then converted into distance, material level, volume, flow or differential level as a basis for display, relay control, analog output and totalling.

As well as simple level measurement, the MultiRanger Plus was designed to handle specific applications such as: pumped volume totalling, differential level and open channel flow measurement.

PL-443 1 – 1

■

SPECIFICATIONS

MULTIRANGER PLUS

Power: » 100/115/200/230 V ±15%, stab selective

» 50/60 Hz, 15 VA » optional: » 12 V dc model, 10 to 18 V dc

Fuse: » 1/4 amp MDL Slo-Blo or equivalent Range: » 0.3 to 15 m (1 to 50 ft) Accuracy: » 0.25% of range or 6 mm (0.24"), whichever is greater Resolution: » 0.1% of range or 2 mm (0.08"), whichever is greater Memory: » EEPROM (non-volatile) no back-up battery required Display: » Liquid Crystal Display of 4 digits, 18mm (0.7") high Operating Temperature: » – 20 to 60 °C (– 5 to 140 °F) Outputs: transducer drive: » 41 KHz, 400 V peak pulses of 1 msec

max duration at a max repetition rate of 300 msec

analog: » 0 - 20 or 4 - 20 mA

» max loading: » 350 ohms, return to ground

» 24 V dc model, 18 to 36 V dc

» 750 ohms, return to –12 V » resolution: 0.1% of range » optional mA isolator

relays: » 5 multipurpose relays (for alarms, pump control,...)

» 1 Form "C" SPDT contact per relay, rated 5 A at

220 V ac non-inductive

» adjustable deadband

All relays are certified for use in equipment where the short

circuit capacity of the circuits in which they are connected is

limited by fuses having ratings not exceeding the rating of the relays.

Enclosure: » CSA enclosure type 4 (similar to NEMA 4)

» 160 mm W x 250 mm H x 82 mm D

(6.3" W x 9.5"H x 3.2"D)

» polycarbonate

Approvals: » CE Weight » 1.8 kg (4lb)

PL-443 2 – 1

96/01/22

PROGRAMMER

Enclosure: » general purpose

Operating Temperature: » – 20 to 50 °C (– 5 to 122 °F) Power: » 9 V battery (style - ANSI/NEDA 1604)

» 67 mm W x 100 mm H x 25mm D

(2.6" W x 4" H x 1" D)

» ABS plastic

TRANSDUCER

Refer to associated Transducer manual.

TEMPERATURE SENSOR

Refer to associated Temperature Sensor manual

CURRENT OUTPUT ISOLATOR (Optional, refer to PL-293)

Model: » LIs-1 loop isolator Input: » 4 - 20 mA dc (from MultiRanger Plus) Output: » 4 - 20 mA dc into 600 ohm max Isolation: » 300 V ac continuous Common Mode Rejection » 100 dB at 60Hz

CABLING

Optional: » RG-62A/U coax

» max distance to electronics: 365 m (1200 ft) » must be run in grounded metal conduit

Temperature Sensor: » Belden 8760, 2 wire shielded

» max distance to electronics: 365 m (1200 ft) » can be run with transducer cable

PL-443 2 – 2

■

INSTALLATION

97 mm

(3.8")

82 mm

(3.2")

MULTIRANGER PLUS

The MultiRanger Plus should be mounted in an area that is within the unit’s ambient temperature range, and is suitable for CSA type 4 enclosures and polycarbonate material. The front cover should be accessible for programming and viewing.

It is advisable to keep the MultiRanger Plus away from high voltage or current runs, contactors and SCR control drives.

Do not mount the multiranger plus in direct sunlight

without the use of a sun shield.

OUTLINE AND MOUNTING

160 mm

(6.3")

131 mm

(5.1")

228 mm

(9")

lid screws (6 places)

240 mm

(9.5")

programmer

suitable location for conduit entrances

mounting holes

(accessed under lid

4.3 mm (0.17") dia. 4 places

Milltronics recommends using a punch for making holes in enclosure.

PL-443 3 – 1

lid, clear

polycarbonate

enclosure, CSA

enclosure 4 polycarbonate

customer mounting

screw

CIRCUIT BOARD LAYOUT

18 to 36 V dc operation

24 V dc model

optional isolator

daughter board

10 to 18 V dc operation

12 V dc model

motherboard

PL-443 3 – 2

INTERCONNECTION

transducer

All wiring must be done in conjunction with approved conduit,

boxes and fittings and to procedures in accordance

with all governing regulations.

Note :

— — — — indicates customer wiring in all diagrams.

INSTALLING THE TRANSDUCER

Basic Wiring

black

white /

shield

Differential Level - Basic Wiring

refer to transducer manual for wiring details

PL-443 3 – 3

white /

shield

transducer

black

white /

shield

SELECTING TEMPERATURE SOURCE

mA Output - FLOATING

(additional to basic wiring)

board ‘B’

Integral Sensor (transducer)

board ‘B’

CURRENT OUTPUT

mA Output - GROUNDED

(additional to basic wiring)

Note : TB1-2 is internally connected to electrical ground TB1-28.

TS-3 or Program

to customer’s equipment maximum loading 350 Ω

PL-443 3 – 4

mA output wiring into floating input ONLY.

750 Ω max. Do Not Ground!

CURRENT OUTPUT ISOLATOR

TB1

If the isolator has not been factory installed, mount it on the upper left hand corner of the motherboard using the two long machine screws provided. The input terminals of the isolator are then connected to the motherboard output terminals,TB-1, using twisted pair maximum 16 gauge wire.

Proper shielding and grounding are required in order to minimize noise levels that could otherwise affect weak receiver signals by introducing false echoes.

The isolator enclosure is grounded by the mounting bolts to the motherboard. This can be checked with an ohmmeter if a poor connection is suspected.

The isolator output wiring must be a shielded twisted pair. The shield must be

intact up to the isolator and the shield grounded at the isolator mounting screw

only. Do not ground shield at any other point as this will void isolation.

mA Output - Optional Isolation

(additional to basic wiring)

Customer Wired

Keep shield intact up to output terminals.

Ground shield at screw ONLY!

optional

LIs-1

isolator

Route output wiring cable in separate conduit, entering enclosure as near as possible to isolator. Keep wiring as short as possible. Do not route cable along terminal board.

isolated 4 - 20 mA output wiring into 600 Ω max

Factory Wired

optional

LIs-1

isolator

isolated 4 - 20 mA output wiring into 600 Ω max

PL-443 3 – 5

TB1

SYNCHRONIZATION

to next MultiRanger Plus

to next MultiRanger

TB1-9 or next

MultiRanger Plus

TB1-4

In applications where more than one MultiRanger Plus, up to a maximum of 8, are going to be used or where their transducers will be sharing a common conduit, synchronization is required. When synchronized, no MultiRanger Plus(s) will transmit within 180 msec of the prior one(s).

To synchronize MultiRanger Plus’s, interconnect the SYNC terminals TB1-4 of all motherboards and ensure that there is a common hydro ground interconnecting all units.

To synchronize MultiRanger Plus’s and MultiRangers, interconnect the SYNC terminal TB1-4 of the MultiRanger Plus to the SYNC terminal TB1-9 of the MultiRanger.

To synchronize more than 8 MultiRangers or MultiRangers with other Milltronics ultrasonic level detection models (e.g. MicroRanger, AirRanger, etc...) consult Milltronics or your distributor.

Synchronization of 2 to 8 MultiRanger Plus’s (additional to basic wiring)

MultiRanger Plus #1

Synchronization of 2 to 8 MultiRanger / MultiRanger Plus’s

MulitRanger Plus

(additional to basic wiring)

All units to be synchronized must be

PL-443 3 – 6

interconnected by a common hydro ground.

MultiRanger Plus #2

MultiRanger

POWER CONNECTIONS

18 to 36 V dc

ac Volage Selection

The MultiRanger Plus accepts 100, 115, 200 or 230 V ac per jumper ‘J9’ (board B) selection or 10 to 36 V dc.

ac Power

select voltage via J9

on board B

12 V dc Model

10 to 18 V dc

24 V dc Model

PL-443 3 – 7

PROGRAMMER

In order to program the MultiRanger Plus, a programmer ( which has a magnetic back plate ) must be placed into the front cover recess on the MultiRanger Plus. Be sure to keep it away from objects such as floppy disks that are susceptible to damage from magnetic fields.

A programmer need not be ordered with each unit.

Check your order if you think that the programmer is missing.

PL-443 3 – 8

■

START UP

GENERAL

The MultiRanger Plus has two modes of operation: Run and Program (Cal). When the unit is powered up, after installation procedures have been completed, it is factory set to start up in the run mode, to detect the distance from the transducer face to the target in meters. This is the normal mode of operation, which can be programmed to display level, volume, totals or flow readings and yield corresponding mA output and relay closures for alarms, pump controls, etc.

The program mode is selected by pressing the the user to program the MultiRanger Plus to suit his preference and to the particular application to which the MultiRanger Plus is being applied.

The first step when programming is to reset all parameters to their

After having entered all required parameters, the MultiRanger Plus can be made to simulate its operation within the particular application giving display, relay operation and analog output. Refer to parameters P-76 through P-78.

When programming has been completed, the MultiRanger Plus can be put into normal operation by pressing the

factory setting by using the master reset P-99

Run/Cal

key.

Run/Cal

key. This mode will enable

PL-443 4 – 1

PROGRAMMER KEYPAD

All entries are made via the programmer keypad.

Run Mode

Press the associated key to view.

H TOT • high total; P-2 = 4 or 5 (P-55)

L TOT • low total; P-2 = 4 or 5 (P-54)

HEAD head reading, P-2 = 5

FLOW flow rate, P-2 = 5

mA mA output

TEMP temperature (P-65)

RATE rate of level change (P-70)

CONF echo confidence (P-80)

HRS 1 pump 1 service hours (P-24)

HRS 2 pump 2 service hours (P-25)

HRS 3 pump 3 service hours (P-26)

HRS 4 pump 4 service hours (P-27) HRS 5 pump 5 service hours (P-28)

• PT 1; press to view level at DLD transducer #1 P-2 = 3

• PT 2; press to view level at DLD transducer #2, P-2 = 3

PL-443 4 – 2

READ reading (P-76)

RUN initiates access into CAL program mode

DIST press to view distance (P-78)

Program Mode

CLR

RUN CAL

MEAS

ALT

DISP

numeric entry

decimal point entry

negative entry

clear display

completes access into program mode

enter run mode

press to make a measurement

increments display to show the next parameter

decrements display to show the preceeding parameter

alternates display to show either the parameter number or parameter value

PL-443 4 – 3

enters display as contents of

ENTER

selected parameter

LEGEND

Press the associated key on programmer:

Display shown on MultiRanger Plus:

Display appears for a short time:

Programmer key:

ENTER

PARAMETER ENTRY

Initial start up

All entries are made via the programmer keypad. All programmers are interchangeable, thus any programmer can be used in conjunction with any MultiRanger Plus.

Apply power to the MultiRanger Plus and place the programmer in its front cover recess. will be momentarily displayed and then a distance reading e.g. will appear. This is a space or distance reading of up to approximately 12 m.

If is alternately displayed, an open or short circuited transducer connection is being indicated.

If is displayed rather than a continuous numeric reading the actual material distance may be beyond 12 m. Proceed with the programming and if persists, consult Troubleshooting guide.

To enter Program mode

RUN CAL

The user may now program the MultiRanger Plus starting at parameter P-1.

To direct access a parameter:

The display should have a ‘ P- ’ and the number of the currently selected parameter.

Current parameter selection

Select desired parameter.

2 0

e.g. select parameter P-20

PL-443 4 – 4

To set a parameter:

scroll ahead to P-21

e.g. value of P-21

access desired parameter e.g. P-20

ENTER

ALT

DISP

display parameter value e.g. 0

select new option e.g. 5

new value is entered and displayed e.g. 5

To reset a parameter to its factory value:

e.g. reset P-20

ENTER

ALT

DISP

CLR

display parameter value

display will go blank

factory setting of parameter is entered and displayed

After a minute and a half, the content display will revert to the parameter number if the keypad is not used further. Press again if it is desired to return to a display of the content.

ALT

DISP

To access the next parameter:

To access the previous parameter:

PL-443 4 – 5

parameter number

displayed

parameter content

displayed

e.g. value of P-20

value of P-21

scroll back to P-20

value of P-20

COMMON DISPLAY MESSAGES

cable loss of echo » messages CAbL and LOE will alternately

have entered » appears after pressing program mode "RUN/CAL" key

clear all parameters » P-99

- return factory setting

overflow » reading is larger than display capabilities

loss of echo » displayed in run mode to indicate

percent » appears when programming units of

parameter number » indicates which parameter is

flash, indicating open or short circuited transducer connection

loss of echo

measurement in percent

being displayed

have entered » appears after pressing run mode "RUN/CAL" key

no value » contents of parameter empty or

invalid request » application does not yield requested

PL-443 4 – 6

no reading display

reading option or spare parameter

■

FUNCTIONAL

TRANSCEIVER

The MultiRanger Plus transceiver will transmit via the transducer, a set of long and/or short pulses per measurement. The number and duration of the pulses is dependent upon P-88.

A short pulse has a maximum measurement range of 2 m (6.6 ft) from the transducer face.

A long pulse has a measurement range of 2 m (6.6 ft) from the transducer face out to its maximum setting (P-3, empty distance to transducer plus P-87, range extension).

DAMPING AND PROCESS RATE

The MultiRanger Plus provides damping to control the maximum rate of change of the displayed material level, volume or flow rate and of the mA output signal. As most relay functions respond to the dampened level reading, they indirectly fall under the control of the damping function. Damping may be set within the range of 0.001 to 9999 in units selected per minute (eg. if P-1 = 3 and P-68 = 15, then the fill damping rate is 15 ft/min). P-68 is set to provide damping specifically for filling conditions while P-69 is set to provide damping specifically for emptying conditions.

The required damping may be estimated by filling and emptying the vessel at its normal rate. The rate of material level change can be viewed via the process rate display parameter, P-70 or by pressing "7" while in the run mode. The value of P-68 and P-69 should be equal to or greater than the rates of level change encountered in P-70. The process rate averaging parameter P-71 selects the method of averaging used to determine the process rate display, however it has no bearing on the damping function.

Damping is often used to slow down the rate of response of the display especially where liquid surfaces are in agitation or material falls into the sound path during filling.

When in the program mode, the damping is automatically overridden to give fast response when "MEAS" is pressed. In the run mode, the response can be further increased by turning the fuzz filter (P-72) and agitator discriminator (P-73) off

- ONLY if they are not required. If the transducer aiming is being adjusted while in the run mode, it is suggested that

damping be at its factory setting of 10 to start. The damping can later be changed to suit prevailing conditions.

Upon a loss of echo condition and after the fail-safe timer (P-75) expires, the display will go to fail-safe high at the fill damping rate if P-74 = 1 or to fail-safe low at the empty damping rate if P-74 = 2.

PL-443 5 – 1

TEMPERATURE COMPENSATION

In order to provide compensation for uniform temperature variances of the sound medium, temperature compensation is provided. Temperature compensation consists of on board circuitry in the MultiRanger Plus and the integal (transducer) temperature sensor. The integral temperature sensor uses the transducer’s wiring and input terminals (TB1 - 8/9) to interface with the on board circuitry. Note: board ‘B’ jumper ‘J2’ must be set to ‘TRANS’.

Optionally, the alternate TS-3 Temperature Sensor can be used to provide a temperature input, rather than by using the integral temperature sensor.

In order to do this:

» set board ‘B’ jumper ‘J2’ to ‘TS / P65’ » optional TS-3 Temperature Sensor must be connected to TB1 - 5/6/7

If the temperature of the sound medium is to remain constant, compensation may be programmed into the MultiRanger Plus instead of using the remote sensor input by one of the following methods:

1. » set board ‘B’ jumper ‘J2’ to ‘TS / P65’ » insure that the temperature sensor input TB1 - 5/6 is left open/unconnected » select P-65 » enter temperature in °C

2 » set board ‘B’ jumper ‘J2’ to ‘TS / P65’

» insure that the temperature sensor input TB1 - 5/6 is left open/unconnected

- select P-61

- perform an empty calibration

The following temperature functions (in °C) can be viewed:

P-65 air temperature » present temperature at sensor

» programmed temperature, if sensor not used P-66 max. air temperature » highest temperature encountered during operation P-67 min. air temperture » lowest temperature encountered during operation

SOUND VELOCITY

The MultiRanger Plus can be calibrated for transducer operation in homogeneous vapours with sound velocities other than that of air.

The basis is to physically measure the level (measuring tape or sight glass) and enter this value via P-61. The MultiRanger Plus then calculates the sound velocity by comparing the entered physical measurement to its own ultrasonic measurement (empty calibration, P-61)

PL-443 5 – 2

P-63, velocity at 20 °C can be used to enter the known velocity at 20 °C of sound in a

far end

blanking

range extension (P-87)

as % P-3

particular gas or vapour to view the resultant velocity of a sound velocity compensation, normalized to 20 °C.

P-64, velocity at P-65, can be used to enter the known velocity of sound in a particular gas or vapour, or to view the resultant velocity of a sound velocity compensation, at the temperature of P-65.

Refer to Appendices/Sound Velocities, for typical sound velocities in various gases and vapours.

BLANKING

Near blanking (P-5) is used to ignore the zone in front of the transducer where ringing or other false echo is at a level with the processing of the true echo.

ringing

typical receiver signal

true echo

(level)

false echo

Ringing is the inherent nature of the transducer mass to continue vibrating after the transmit pulse has ceased. The amount of ringing varies with the type of transducer used and decays to acceptable levels in the order of milliseconds. Excessive cold and overtightening of the transducer mounting will increase the ring time such that it may appear as an echo during the receive cycle. This is usually indicated by an incorrect high level reading. This condition may be verified with the use of an oscilloscope and may be overcome by increasing the near blanking (refer to Troubleshooting).

Far end blanking is a design function that ignores the zone below the zero or empty level where false echoes may appear at levels that interfere with the processing of true echo.

In applications where the zero level is above the bottom of the vessel and it is desired to monitor the zone below the normal zero, range extension (P-87) may be used to extend the range into the far end blanking. Range extension is entered as a percent of P-3. As range extension reduces the protection afforded by the far end blanking, it should be used judiciously. Avoid excessive range extension as this may reduce the

PL-443 5 – 3

end of

transmit

P-5

near blanking

empty distance to transducer

P-3 range

typical processed signal

level

measurement’s reliability and accuracy. If it is found that false echoes are appearing ahead of the blanking zone, P-87 should be reduced accordingly.

Blanking is automatically corrected for sound velocity change where temperature and velocity compensation is used, keeping the blanking at the distance at which it was entered.

AGITATOR DISCRIMINATION

In applications where there is an agitator operating in the vessel, the blades may interfere with level readings when the material level is lower than the blades. In such a case, the agitator discriminator (P-73) can be turned on (factory setting).

With the agitator turned on, the reading will not change unless the echo is closer for at least 5 consecutive measurements nor will it change unless the echo is farther for at least 2 consecutive measurements.

This feature allows the MultiRanger Plus to remain locked on the true echo, even if there are occasional false echoes due to the agitator blades, electrical noise or crosstalk from other ultrasonic units.

Agitator discrimination, however, slows down the MultiRanger Plus’s speed of response. Therefore, if fast response is required, especially when aiming the transducer while in the run mode, and there is no agitator involved, the discriminator should be turned off.

Agitator discrimination will not work if the blades are

stationary and in the transducer’s beam path.

RELAYS

General

Five onboard multi-purpose relays are provided on the MultiRanger Plus. Each relay may be independently assigned to one function and has a corresponding status LED, visible through the front cover.

The relay functions fall under three modes of operation :

» alarm : alarm ON = LED ON = relay coil de-energized » pump : pump ON = LED ON = relay coil energized » miscellaneous : contact closed = LED ON = relay coil energized

Complete programming of each relay requires two steps. Refer to the Relay Programming Chart Relays.

1 - select a relay function

2 - enter relay ON/OFF setpoints for function options 1-6 and 8-10.

- set control parameters for function options 7,11,12,13 and 14.

PL-443 5 – 4

Function

Alarm

level : - in high alarm, the function goes on when the level rises

in bounds : - the relay will be in alarm if the level is inside the zone

out of bounds : - the relay will be in alarm if the level is outside the

differential : - the high alarm function goes on when differential

rate of change : - in filling alarm, the function goes on when the rate of filling

to the ON setpoint and goes off when the level lowers to the OFF setpoint. In low alarm, the function goes on when the level lowers to the ON setpoint and goes off when the level rises to the OFF setpoint.

between the setpoints.

zone between the setpoints.

level increases to the ON setpoint and goes off when the differential level decreases to OFF setpoint. The low alarm function goes on when the differential level decreases to the ON setpoint and goes off when the differential level increases to the OFF setpoint.

increases to the ON setpoint and goes off when the rate of filling drops to the OFF setpoint. In emptying alarm, the function goes on when the rate of emptying increases to the ON setpoint and goes OFF when the rate of emptying drops to the OFF setpoint. For emptying alarm, the setpoints must be entered as negative values.

temperature : - in high alarm, the function goes on when the temperature rises to

loss of echo : - the function goes on when the fail-safe timer expires. The function

PL-443 5 – 5

the ON setpoint and goes off when the temperature lowers to the OFF setpoint. In low alarm, the function goes on when the temperature lowers to the ON setpoint and goes off when the temperature rises to the OFF setpoint.

goes OFF when a valid echo is received (fail-safe timer is reset).

Pump

level : - in pump down, the function goes on when the level rises

sequential : - refer to Applications\Pump Control. Select function option 8, 9 or 10

differential : - the pump down function goes on when differential

to the ON setpoint and goes off when the level lowers to the OFF setpoint. In pump up, the function goes on when the level lowers to the ON setpoint and goes off when the level rises to the OFF setpoint.

and press "*" to scroll through the loss of echo defaults. For option 9, pressing "*" will also scroll through the cumulative, ratio or duty/back-up mode of pump up operation.

level increases to the ON setpoint and goes off when the differential level decreases to OFF setpoint. The pump up function goes on when the differential level decreases to the ON setpoint and goes off when the differential level increases to the OFF setpoint.

LCD display

loss of echo default En = energized, pump ON after P-75 expires dE = de-energized, pump OFF after P-75 expires Ho - hold prior relay status after P-75 expires

sequential loop. optional to function 9 blank = cumulative ’ = duty/back-up A = ratio

function 8 = level, fixed roster 9 = level, sequential 10 = differential

e.g. dE : ’9 = duty/back up sequential pumping

PL-443 5 – 6

de-energize under loss of echo

Miscellaneous

totalizer and samplers : - refer to Application Pump Totalizer and OCM . Relays

scanner : - this function is specific to relay 5 and the DLD mode of operation.

The transducer hot is wired to the common terminal of the relay so that when switched, the transceiver may alternately access transducer #1and #2.

Refer to Applications \ Differential Level Application.

Setpoint - ON / OFF

If the ON setpoint is higher than the OFF setpoint, the relay operates as :

» high alarm » pump down control » high differential alarm

If the ON setpoint is lower than the OFF setpoint, the relay operates as :

» low alarm » pump up control » low differential alarm

The ON and OFF setpoints can not be the same on an individual relay but may be common to other relays. The dead band or hysteresis is the difference between the ON and OFF setpoints. For in and out of bounds level alarms, the hysteresis is set ±2 % of span from either boundary.

are normally de-energized, contact closure is approximately 200 mSec duration.

The setpoints for alarm functions 1 - 4 and pump functions 8 - 10 are always entered in the P-1 units of measurement selected (but not %). The setpoints are measured from the bottom up, referenced to zero or empty except for the differential functions, 4 and 10. There the setpoints represent the absolute differential between levels, regardless of the level with respect to zero.

Relay status - non run modes

When the fail-safe timer expires, pump control relays respond as previously described. However, alarm relays will respond in the following manner.

FAIL-SAFE MODE RELAY STATUS

P-74 high alarm low alarm

fail-safe high on off

fail-safe low off on

fail-safe hold hold hold

Upon entering the program mode, all pump control relays will be turned OFF. Alarm relays will hold their prior status, but will respond to measurements take when "MEAS" is pressed.

PL-443 5 – 7

Simulation

Parameters P-76 through P-78 can be used to simulate relay operation in the program mode. Pump relays will be held OFF during simulation, however their corresponding LED’s will respond. Remote totalizer and flow sampler relay operation do not apply to simulation. Refer to Parameter Description.

If the relay status can affect plant operation or personnel safety,

it is advisable to override the relay functions or disconnect the relay

Relay Function Vs Mode of Operation

It should be noted that some relay functions can not be used in certain modes of operation. The following table shows the valid functions for the five modes of operation.

Function Mode of Operation

0 off off off off off 1 level level level level level 2 in bounds in bounds off in bounds in bounds 3 out of

4 off off differential

5 rate rate off rate rate 6 temp. temp. temp. temp. temp. 7 L.O.E. L.O.E. L.O.E. L.O.E. L.O.E. 8 pump pump pump pump pump 9 sequential sequential off sequential sequential

10 off off pump on

11 off off off totalizer totalizer 12 off off off flow

13 time

14 off off scanner off off

wiring during calibration or simulation

Keep power disconnected at main breaker

when MultiRanger Plus cover is opened.

Mat’l Space DLD Pump Vol. OCM

(P2 = 1) (P2 = 2) (P2 = 3) (P2 = 4) (P2 = 5)

bounds

sampler

out of

bounds

time

sampler

off out of

level

differential

time

sampler

bounds

off off

sampler

time

sampler

out of

bounds

flow

sampler

time

sampler

PL-443 5 – 8

RELAY PROGRAM CHART

Relay 1 Relay 2 Relay 3 Relay 4 Relay 5

Relay Function

Alarm : Level 1 P-9 P-10 1 P-12 P-13 1 P-15 P-16 1 P-18 P-19 1 P-20 P-21 P-1

In bounds 2 " " 2 " " 2 " " 2 " " 2 " " "

Out of bounds 3 " " 3 " " 3 " " 3 " " 3 " " "

Differential 4 " " 4 " " 4 " " 4 " " 4 " " "

Rate of Change 5 " " 5 " " 5 " " 5 " " 5 " " P-1/min

Temperature 6 " " 6 " " 6 " " 6 " " 6 " " ° C

Loss of Echo 7 set P-75 7 set P-75 7 set P-75 7 set P-75 7 set P-75 n/a

Pump : LevelEn: 8* P-9 P-10 8* P-12 P-13 8* P-15 P-16 8* P-18 P-19 8* P-21 P-22 P-1

Sequential En: 9* " " 9* " " 9* " " 9* " " 9* " " "

cumulative

duty / backup

ratio

Differential En: 10* " " 10* " " 10* " " 10* " " 10* " " "

Miscellaneous :

Totalizer 11 set P-56 11 set P-56 11 set P-56 11 set P-56 11 set P-56 vol.P-43

Flow Sampler 12 set P-57 &

Time Sampler 13 set P-59 13 set P-59 13 set P-59 13 set P-59 13 set P-59 hr

Scanner n/a n/a n/a n/a n/a n/a n/a n/a 14 set P-2 n/a

Fctn P-8

dE: 8* " " 8* " " 8* " " 8* " " 8* " " " Ho: 8* " " 8* " " 8* " " 8* " " 8* " " "

dE: 9* " " 9* " " 9* " " 9* " " 9* " " " Ho: 9* " " 9* " " 9* " " 9* " " 9* " " " En:’ 9* " " 9* " " 9* " " 9* " " 9* " " " dE:’ 9* " " 9* " " 9* " " 9* " " 9* " " " Ho:’ 9* " " 9* " " 9* " " 9* " " 9* " " " En:A 9* " " 9* " " 9* " " 9* " " 9* " " " dE:A 9* " " 9* " " 9* " " 9* " " 9* " " " Ho:A 9* " " 9* " " 9* " " 9* " " 9* " " "

dE: 10* " " 10* " " 10* " " 10* " " 10* " " " Ho: 10* " " 10* " " 10* " " 10* " " 10* " " "

Setpoints

ON OFF

P-58

Fctn P-11

Setpoints

ON OFF

12 set P-57 &

P-58

Fctn P-14

Setpoints

ON OFF

12 set P-57 &

P-58

Fctn P-17

Setpoints

ON OFF

12 set P-57 &

P-58

Fctn P-20

Setpoints

ON OFF

12 set P-57 &

Units

volume

P-58

* = Press to select LOE default ( En, dE & Ho ) and sequential option ( cumulative, duty / backup or ratio ).

ANALOG OUTPUT

The MultiRanger Plus can be programmed to provide analog output (P-6) of 0 or 4 - 20 mA, proportional or inverse span.

The 4 and 20 mA levels can be trimmed slightly via P-97 and P-98 respectively to compensate for any offset between the MultiRanger Plus and the customer’s equipment.

The analog output feature can be turned OFF by setting P-6=0. The output and alternate displays(5 &P-92) will immediately drop to 0 mA after a new measurement is processed. The output will remain disabled during simulation (P-76,77, & 78) However, the test routine of P- 92 and the trim parameters will remain active. If P-60 = 0, then the analog output will return to its programmed output after a new measurement is processed.

If the analog output must be isolated, the optional LIs-1 mA isolator must be mounted on the motherboard and wired. When using the isolator, the load adjust can be done via P-97 and 98 rather than via the load adjust potentiometer.

The analog output responds in the following manner :

MODES

P2 = 5

OCM

• head 1

(if P-50 = 1)

• flow

(if P-50 = 2)

head

or flow

head

or flow

respondstomaterial

A N A L O G

if P-6 = 1

or 2, reads

20 mA

when

if P-6 = 3

or 4, reads

20 mA

when

P2 = 1

LEVEL

level

empty full 0

P2 = 2

SPACE

material

distance

full empty maximum

P2 = 3

DLD

• differential

(if P-32 = 1)

• level on xdcr 1

(if P-32 = 2)

differential

or level

differential

or level

P2 =1

VOLUME

volume • level

full full at max.

empty empty at 0

P2 = 4 PUMP

TOTAL

(if P-34 = 0)

• volume

(if P-34 ≠ 0)

PL-443 5 – 10

■

APPLICATIONS

This section highlights the most common applications for which the MultiRanger Plus can be applied. Other applications not listed here may be similar to those listed or a combination thereof. ( e.g. monitoring piston position on a wood pulverizer is in essence a level application )

When programming, refer to the application which is most similar to yours. A practical example has been given to further expand on the programming features. As the example may not cover all facets of the particular application, the user should become familiar with the parameters available. Refer to Parameter Description or Appendices \ Alphabetical Parameters Listing.

For ease of reference and programming, parameters have been organized into groups relating to their function or application.

P-0 security P-1 to P-7 general P-8 to P-22 relays P-23 to P-33 pump control P-34 to P-39 volume and display conversion P-40 to P-50 OCM P-51 to P-59 OCM and pump totalizer P-60 to P-67 custom calibration P-68 to P-75 filters P-76 to P-78 measurement and display P-79 to P-88 echo processing and analysis P-89 to P-98 testing P-99 master reset

The minimum distance from the transducer face to the target is limited by the

PL-443 6 – 1

minimum near blanking value, P-5, of 30 cm ( 1 ft ).

SIMPLE LEVEL

APPLICATION PARAMETERS

General Relays Pump Control Vol. & Disp.

OCM Totalizer Custom Filter

Conversion

P-1 units P-8 1 function P-23 submers. P-34 tank P-40 primary P-51 OCM sim. P-60 full P-68 fill damp P-2 mode P-9 1 on P-24 1 hrs. P-35 dim. A P-41 time P-52 factor P-61 empty P-69 empty damp P-3 empty dist. P-10 1 off P-25 2 hrs. P-36 dim. L P-42 expon. P-53 decimal P-62 offset P-70 rate disp. P-4 span P-11 2 function P-26 3 hrs. P-37 convert P-43 flume dim. P-54 low tot. P-63 vel. 20 °C P-71 rate avg.

P-5 near blank P-12 2 on P-27 4 hrs. P-38 disp. offset P-44 spare P-55 high tot. P-64 vel. P-65 P-72 fuzz filter P-6 mA out P-13 2 off P-28 5 hrs. P-39 disp. opt’n P-45 max. head P-56 remote tot. P-65 temp. P-73 agitator P-7 decimal P-14 3 function P-29 run-on P-46 max. flow P-57 flow samp. P-66 max. temp P-74 f-s mode

P-15 3 on P-30 run-on P-47 auto zero P-58 flow samp. P-67 min. temp P-75 f-s timer P-16 3 off P-31 spare P-48 cutoff P-59 time samp. P-17 4 function P-32 DLD mA out P-49 decimal P-18 4 on P-33 totaling P-50 mA out P-19 4 off P-20 5 function P-21 5 on P-22 5 off

P-# required parameters P-# optional parameters

P-# parameters not required

SIMPLE LEVEL APPLICATION

The most common application of a Milltronics ultrasonic level measuring system is for simple level monitoring, whereby the material level or space measurement is displayed. This may or may not include alarms and mA output.

When in the program mode, alarm relays hold their contact state. However, they will respond to measurements taken when "MEAS" is pressed.

Simple Level Example

The application is to obtain a level measurement and corresponding 4-20 mA output of a 30 ft high vessel. The transducer face is level to the top of the vessel, the empty level will be at 0 ft ( bottom ) and the full level will be at 28 ft from the bottom ( span ). A high alarm is required at 4 ft from the top ( 26 ft from the bottom ) and a low alarm is required at 5 ft from the bottom. The maximum emptying rate is 1 ft / min, a rate greater than this should set an alarm. In the event of a loss of echo, the MultiRanger Plus is to go into fail-safe hold after 2 minutes.

select:

P-1 enter option "3", units in feet

advance to:

P-2 enter option "1", material level P-3 enter "30", empty distance to transducer P-4 enter "28", span P-5 enter ".984", blanking distance , ( use factory setting ) P-6 enter option "2", 4 – 20 mA output P-7 enter "2", display max 2 digits after decimal P-8 enter option "1", relay 1 - alarm function P-9 enter "26", relay 1 - alarm ON ( 30’ – 4’ = 26’ ) P-10 enter "25.5", relay 1 - alarm OFF deadband = 0.5’, arbitrary setting P-11 enter option "1", relay 2 - alarm function P-12 enter "5", relay 2 - alarm ON P-13 enter "5.5", relay 2 - alarm OFF P-14 enter option"5", relay 3 - rate of change function P-15 enter "–1", relay 3 - alarm ON 9 ‘–’ denotes emptying P-16 enter "– 0.9", relay 3 - alarm OFF P-37 enter "1", convert display ( x1 ) P-68 enter "1", maximum fill damping 1 ft / min P-69 enter "1", maximum empty damping 1 ft / min P-74 enter option "3", fail-safe hold P-75 enter "2", fail-safe timer - 2 min.

to re-enter run mode

RUN CAL

PL-443 6 – 3

PUMP CONTROL

APPLICATION PARAMETERS

General Relays Pump Control Vol. & Disp.

OCM Totalizer Custom Filter

Conversion

P-# required parameters P-# optional parameters

P-# parameters not required

PUMP CONTROL APPLICATIONS

The basic difference between a simple level application and a pump control application is that the relays assigned to pump functions are normally in a de-energized state and are energized when pumping is required.

The MultiRanger Plus can be programmed to control up to 5 pumps. Each may be configured in one of the following ways.

1. Fixed roster: ( P-8,11,14,17& 20 = 8 )

selected pump relays 1-5 always operate in conjunction with their respective relay setpoints. i.e. relay 1’s operation is always subject to relay 1’s setpoints (P-9 & P-10). Any combination of the selected pumps can be operating at a time.

2. Sequential loop: ( P-8,11,14,17& 20 = 9 )

cumulative selected pump relays 1 - 5 sequentially rotate through the

associated relay setpoints changing pump / setpoint assignment each time the lead pump is turned off. The lead pump is defined as the pump responding to the first ON setpoint.

duty / back-up similar to the cumulative sequential loop except that only

one of the pumps designated as duty/back-up can be on at a time. This feature is useful in older installations where the discharge main cannot tolerate excessive pressure. If the lead pump, through wear or blockage, cannot keep up with the inflow, the next pump in sequence will come on and the lead pump will be turned off. The ON setpoints are generally in close proximity, but the OFF setpoints must be common for all pumps on the loop.

Sequential operation can be programmed as either

cumulative or duty/back-up, but not both. The

MultiRanger Plus will take the last mode entered

as the common choice for all sequenced relays.

3. Assignment of a pump / relay contact to a setpoint parameter is done by ratio of the logged service hours. When the service of a pump is required, the pump with the least amount of service hours ( P\C-24 to 28 ) with respect to the set ratio ( P\A - 24 to 28 )is started. When a pump is to be taken out of service, the pump with the least amount of service hours is stopped.

PL-443 6 – 5

e.g. relays 1, 2 and 3 control three pumps by service ratio. It is required that

pump 1 operate 60% of the time, pump 2 operate 10% of the time and pump 3 operate 30%of the time.

» set the relay function : P-8, 11, 14 = dE : A9 » set the relay setpoints : P-9/10, 12/13, 15/16 » set the P-24, 25, 26 ratios : A-24 = 60

A-25 = 10 A-26 = 30

Relays assigned to pump control operation are software set that no two pumps can start up within 10 seconds of each other, a power failure or return to the run mode.

When in the program mode, pump relays will be held de-energized (OFF). In the event of a loss of echo condition, the pump relays can be individually programmed to be:

» de-energized (dE) » energized (En) » hold (Ho)

when the fail-safe timer P-75 expires. Refer to Applications/Relays.

In applications where flooding is possible, a submersible transducer should be used. The submersible transducer’s air cavity insures that a high level reading will be maintained rather than a loss of echo condition when the liquid level reaches the transducer.

When relays are assigned a pump function, parameters P-24 through P-28 are used to log the respective service hours and number of pump starts for pump relays 1 - 5. These parameters may also be viewed while in the run mode by pressing the appropriate programmer keys. The initial pressing of the key causes the display to show the service hours. Holding the key in for at least five seconds causes the number of starts to be displayed. Each register may be reset to 0 by pressing "CLR" and then "ENTER" or preset by entering a particular value.

When using a submersible transducer, set P-23.

The preset value is immediately stored in memory, however subsequent values are only stored every 4 hours. Thus, after a power failure, the registers will display the last value stored. The registers will automatically reset to 0.000 after reaching a value of 9,999.

PL-443 6 – 6

Pump Control Example

The application is to control the level in a wet well 3 meters deep. It is required that :

» the level is displayed in meters » to start/stop two constant speed pumps: start pump 1 at 1 m level

start pump 2 at 2 m level stop both pumps at 0.5 m level

» the two pumps operate on a cumulative sequential loop, de-energized

under loss of echo » low alarm is set at 0.4 m to protect the two pumps from cavitating » the transducer is mounted 3.4 meters from the bottom of the wet well » the span of level in the well is 3 m » maximum fill rate is 1m / min, maximum draw rate is 0.2 m / min » in the event of loss of echo, go into fail-safe low after 30 seconds to

protect pumps » the transducer is the submersible type as there is a possibility of flooding

select :

P-1 enter option "1", units in meters

advance to:

P-2 enter option "1", material level P-3 enter "3.3", empty distance to transducer P-4 enter "3", span

P-5 enter " P-7 enter "2", display max 2 digits after decimal

P-8 enter option "dE 9" relay 1 - pump function

P-9 enter "1", relay 1 - pump ON P-10 enter "

P-11 enter option "dE 9" relay 2 - pump function

PL-443 6 – 7

.300", blanking distance, ( use factory setting )

(press "9" and

" until "dE 9"

then "

is displayed)

.5", relay 1 - pump OFF

(press "9" and then "

" until "dE 9"

is displayed)

P-12 enter "2", relay 2 - pump ON P-13 enter "

P-14 enter option "1", relay 3 - alarm function P-15 enter " P-16 enter "

P-23 enter option "1", using submersible transducer P-37 enter "1", convert display ( x1 ) P-68 enter "1", fill damping 1 m / min

P-69 enter " P-74 enter option "2", fail-safe low to protect pumps

P-75 enter "

RUN CAL

.5", relay 2 - pump OFF

.4", relay 3 - alarm ON .45", relay 3 - alarm OFF

deadband = 0.05 m, arbitrary setting

.2", empty damping 0.2 m / min

.5", fail-safe timer

at a maximum draw rate of 0.2 m / min, this would protect pumps. If a loss of echo occurred at 0.5 m, after 30 sec the level would equal that of acceptable low level alarm and the pump would shut off.

to re-enter run mode

Pump Run-On

Pump run-on is a special feature designed to allow the pump assigned, temporarily (sequential loop) or permanently ( fixed roster ), to the lowest OFF setpoint to continue pumping after it has reached that OFF setpoint. The duration of run-on is set by P-30. Only one run-on duration is allowed per interval. The interval is the time period set by P-29 which begins upon return to the run mode or resumption of power. No run-on is allowed during the first interval.

Caution: extended pump run-on can lead

to cavitation, causing air lock or pump damage

PL-443 6 – 8

Conditions of use : » Do not use run-on feature during pump-up operation as

an overflow condition may occur. Set P-29 and 30 to 0.

» Select the loss of echo default "dE" to protect pumps

from cavitating in the event of loss of echo

» The run-on interval must be greater that the run-on duration.

e.g. P-29 = 24 and P-30 = 15

After 24 hours from going into the run mode, the MultiRanger Plus enters the second run-on interval allowing only one pump run-on cycle of 15 seconds, at the first time the lead pump turns off. If the lead pump turns off a second time during that 24 hour interval, no run-on will occur. After the 24 hour interval has elapsed, whether a pump run-on has occurred or not, the next run-on interval will begin, allowing one run-on cycle.

PL-443 6 – 9

PUMP TOTALIZER

APPLICATION PARAMETERS

General Relays Pump Control Vol. & Disp.

OCM Totalizer Custom Filter

Conversion

P-# required parameters P-# optional parameters

P-# parameters not required

PUMP TOTALIZER APPLICATION

This type of application is an extension of the pump control application, accessed by setting P- 2 = 4. Unlike a pump application in which the mode of the measurement (P-2) can be of material or space, the pump volume totalizer mode is a measurement of the liquid volume pumped with reference to the material level.

The material level must be converted to volume using volume conversion parameters P-34, 35 and 36 and / or convert display P-37. The MultiRanger Plus in pump-down, will record the volume being pumped out. Alternately, the MultiRanger Plus will record the volume pumped in if the pump setpoints are set for pump-up.

When the pump(s) is OFF, the MultiRanger Plus estimates the volume of the inflow or discharge by recording the rate at which the liquid level changes. When the pump(s) is operating, the estimated inflow or discharge volume may be added (P-33 = 1) to the pumped volume total, as in batch processing.

When the pump(s) stops, the pumped volume of the previous pump cycle is added to the total volume pumped in the 8 digit totalizer.

The totalizer contents are stored in RAM and will be lost in the event of a power failure. However, after every 1 hour of continuous operation, the totalizer contents are stored in the EEPROM. Thus, after a power failure, the totalizer will be loaded with the last value stored.

In the event of a loss of echo, the totalizer will continue being incremented by the flowrate established from the last valid echo. The totalizer will stop being incremented and hold its last updated value when in the program mode or if the fail-safe timer expires ("LOE" is displayed"). Once the totalizer has been filled (99999999), it will automatically reset itself to zero and resume totalling.

The MultiRanger Plus can be programmed (P-39) to normally display one of the following readings :

» enter option "0", hold last reading selected in run mode » enter option "1", high total: 4 highest digits of the 8 digit totalizer » enter option "2", low total: 4 lowest digits of the 8 digit totalizer » enter option "5", level

It must be noted that only half of the totalizer digits

can be accessed or viewed at one time.

PL-443 6 – 11

e.g.

high total low total

P-54 P-55

8 digit total

If it is wished to momentarily view an alternate reading while in the run mode and P-39

≠ 0, press the desired programmer key ( ‘HEAD’ and ‘FLOW’ are not applicable

to the pumped volume totalling )

e.g.

If P-39 = 0, alternate reading cannot be momentarily displayed. Pressing the desired key will change the display and hold it there until the next alternate reading is selected.

In the program mode, the high and low totals can be viewed or preset to any value by P-54 and P-55 respectively.

The pumped volume readings ( high and low total ) may be scaled down by factors of 10 ( P-52 ) to slow down the totalizer’s rate of fill, and its decimal point ( P-53 ) positioned for the resolution required. If it is desired to change the scaling factor or decimal point location after totalling has begun, record the high and low totals and reset the totalizer to zero.

1325 4679

normal display is high total, P-39 = 1

low total is momentarily displayed

normal display of the high total returns

Further to alarm and pump functions, relays may be programmed to act as a momentary contact closure for a remote totalizer, flow sampler or time sampler ( refer to Applications \ Relays ). The duration of a momentary contact closure is 200 msec for which the corresponding relay status LED will flash. As a remote totalizer relay, the contact is closed each time the displayed total is increased by the amount entered into P-56. As a flow sampler relay, the contact is closed each time the volume of liquid, as set by P-57 and P-58, is pumped. As a time sampler relay, the contact is closed at the rate of the time period entered into P-59.

The mA output responds to the liquid reading only ( level, if P-34 = 0 or volume if P-34 ≠ 0 ). In the event of fail-safe due to loss of echo, the mA output will respond as programmed by P-6 and P-74, but the totalized volume will hold its last reading.

PL-443 6 – 12

Pump Totalizer Example

Further to the Pump Control Example it is required that the volume pumped be totalized. A daily flow total of 1,200 cubic meters is expected and a contact closure is required every 10 cu. m. The full level of the well is equal to 42 cu.m. The following parameters should be set.

select:

P-2 enter option "4", volume totalizer P-17 enter option "11", relay 4-remote totalizer contact P-33 enter option "1", estimated inflow volume is added to

pumped volume P-37 enter "14", convert display, x14 ( 42 / 3 = 14 ) P-39 enter option "2", display low total P-52 enter "1", totalizer convert display, totalized volume will

read as tens of cubic meters or 1 count per

10 cubic metres. P-53 enter option "0", totalizer decimal point no decimal digits or

resolution equals 100% of a count P-54 press "CLR"

enter "0", totalizer preset value, arbitrarily chosen

P-55 press "CLR"

enter "0", totalizer preset value, arbitrarily chosen

P-56 enter "1", totalizer contact control-closure every 10 cu. m

RUN

to re-enter run mode.

CAL

PL-443 6 – 13

VOLUME

APPLICATION PARAMETERS

General Relays Pump Control Vol. & Disp.

OCM Totalizer Custom Filter

Conversion

P-# required parameters P-# optional parameters

P-# parameters not required

VOLUME APPLICATION

In addition to simple liquid level and pump applications, volume conversions can be included in the programming.

Common Tank Shapes

Volume conversion is provided for 8 common tank shapes, ( P-34 ). Dimensions are entered using P-4 and 36. Volume is displayed as 0-100% and may be converted to volume units using P-37.

P-4, span, must be equal to the 100% (full) level of tank.

Volume Example

The application is to measure the volume of glue in a horizontal tank with parabolic ends. The tank manufacturer’s specifications state that the volume is 40.6 cubic metres.

1 m

transducer

man hole

0.5 m

P-4 = 3 m

(must equal height of tank)

A = 0.75 m

L = 5 m

The maximum fill / draw rate is 0.35 cu. m / min. In the event of a loss of echo, the MultiRanger Plus is to go into fail-safe high after 30 sec.

select:

P-1 enter option "1", units in meters

advance to:

P-2 enter option "1", material level

P-3 enter "3.5", empty distance to transducer

P-4 enter "3", span ( inside diameter of tank )

P-5 enter ".300", near blanking distance, ( use factory setting )

P-7 enter "1", display maximum 1 digit after decimal

P-34 enter option "7", tank shape for volumetric conversion

PL-443 6 – 15

P-35 enter ".75", tank dimension A

P-36 enter "5", tank dimension L

P-37 enter ".406", convert display, x.406 (automatically shows the

levels in %). As 100% full = 40.6 cubic metres, a conversion factor of .406 must be entered.

actual volume = conversion factor percentage

P-68 enter "10", fill damping 10 m/min

40.6 cu. m = 116 min total fill time

0.35 cu. m / min 3 m = 0.025 m / min average fill rate

116 min However, because of the tank’s shape, the top

and bottom levels will fill faster than the middle section. Therefore the actual P-68 value should be greater than the average value. Typically, the factory set damping of "10" can be used.

P-69 enter "10", empty damping-same as fill damping rate

P-74 enter "1", fail-safe high

P-75 enter ".5", fail-safe timer, 30 sec.

RUN

to re-enter run mode

CAL

Custom Design Tanks

Where the tank design does not match one of the eight common tank shapes, P-34 may be programmed for level versus volume characterization.

Characterization is achieved by entering the level ( H parameters ) and corresponding volume ( F parameters ) for the elevations where there is a change in the tank profile. Where curves are involved, the more breakpoints that are defined, the more accurate will be the volume of measurement. A maximum of eleven breakpoints can be defined.

Level data is entered in the linear units selected ( P-1 ) and volume data is entered in the tank desired volumetric units. Both of these are referenced to the bottom of the tank.

PL-443 6 – 16

Custom Design Tanks Example ‘A’

P-4 6 m

The application is to measure the level of liquid in a custom designed tank. The tank manufacturer specifies the following level versus volume data.

transducer

158.9 m

@ 6 m

58.42 m

@ 4 m

P-3

29.12 m

4 m

@ 3 m

@ 1m

6.5 m

0 m3 @ 0 m

select :

P-1 enter option "1", units in metres

advance to :

P-2 enter option "1", material level

P-3 enter "6.5", empty distance to transducer

P-4 enter "6", span

P-5 enter ".5" near blanking distance

P-34 enter option "9" universal level vs volume

press display will show

H - 1

ALT

DISP

ENTER

- - - -

0.0 0 0

H - 2

ENTER

1.0 0 0

PL-443 6 – 17

(then)

- - - -

press display will show

H - 3

(then)

ENTER

ALT

DISP

ALT

DISP

ENTER

3. 0 0 0

H - 4

4. 0 0 0

H - 5

6. 0 0 0

F - 5 F - 5 F - 1

- - - -

0. 0 0 0

F - 2

(then)

- - - -

ENTER

ALT

DISP

CLR

RUN CAL

to re-enter run mode

ENTER

PL-443 6 – 18

4. 0 0 0

F - 3

2 9. 1 2

F - 4

5 8.4 2

F - 5

1 5 8.9

F - 5

P - 3 4

(then)

- - - -

Compensation

In many volume applications, the ambient atmosphere is other than air or at a temperature other than 20 °C. Refer to Functional \ Temperature or \ Sound Velocity, for details on compensating for such circumstances.

If it is noted that the MultiRanger Plus reading is consistently off by a constant amount as compared to the physical reading, this may be compensated for by P-62. This tank measurement offset might occur when P-3 or P-4 does not exactly match the tank dimensions referenced for volume conversion. If the cause of the offset appears below the relay setpoints, the setpoint parameters may need to be reset as these will have shifted accordingly.

Custom Design Tanks Example ‘B’

Further to the Volume Example or the Custom Design Tank Example ‘A’, the liquid is a glue giving off formaldehyde vapour. Velocity compensation will be required.

As the next two steps involve physical measurements, for

convenience sake, P-60 can be done before P-61.

select:

P-62 (optional to P-60) record present offset for reference

P-60 (optional) with the tank as full as permissible, without

going into the blanking zone, press "MEAS".

The MultiRanger Plus will take a measurement

and display the level. Press "meas" at least 5

times and insure that a stable reading is

being obtained.

Enter the "physical measurement".

The MultiRanger Plus will now calculate the

measurement offset to be used in future level

measurements. The offset reading will be

automatically entered into P-62 and can now

be viewed.

P-63 record present sound velocity for reference

PL-443 6 – 19

P-61 with the tank as empty as permissible and filled with its normal

vapour and at its normal temperature press "MEAS". The MultiRanger Plus will take a measurement and display the level in the units selected, regardless that percent, volume or convert display are used. Press "MEAS" at least 5 times and insure that a stable reading is being obtained.

Enter the "physical measurement". The MultiRanger Plus will now calculate the correct sound velocity to be used in future level measurements.The new sound velocity will automatically be entered into P-63 and P-64, and can now be viewed.

RUN CAL

to re-enter run mode.

PL-443 6 – 20

PL-443 6 – 21

DIFFERENTIAL LEVEL

APPLICATION PARAMETERS

General Relays Pump Control Vol. & Disp.

OCM Totalizer Custom Filter

Conversion

P-15 3 on P-30 run-on P-47 auto zero P-58 flow samp. P-67 min. temp P-75 f-s timer

P-16 3 off P-31 spare P-48 cutoff P-59 time samp. P-17 4 function P-32 DLD mA out P-49 decimal P-18 4 on P-33 totaling P-50 mA out P-19 4 off

P-20 5 function

P-21 5 on P-22 5 off

P-# required parameters P-# optional parameters

P-# parameters not required

DIFFERENTIAL LEVEL APPLICATION

This type of application monitors the difference between two liquid levels, hence two transducers are required. The MultiRanger Plus monitors the two levels, calculates the difference and displays the differential as the reading. The following parameters should be left at their factory setting:

» volume conversion (P-34) » display conversion (p-37) » offset (P-62) » velocity compensation (P-63) » temperature compensation (P-65)

In the run mode, the reading display will show the absolute difference between the levels, hence there are no negative readings. The level at transducer 1 or 2 may be viewed individually by pressing "PT1" or "PT2" respectively.

When programming as a differential level detector

» P-2, mode: option 3 must be selected for DLD operation » P-3, empty distance to transducer: represents the lowest or

common level » P-4, span: represents differential level corresponding to the 20 mA value » P-6, ma output: select range » P-20, function: option 14 must be selected for relay 5 to

operate as scanner

» P-32, mA output: may be dedicated to correspond to differential or

level under transducer #1

On alarm and pump relay functions with setpoints referenced to zero, the setpoints are common to both levels. The in bounds, out of bounds, rate of change and sequential relay functions are not allowed.

In the event that the echo on either transducer is lost:

» If set for fail-safe high: the differential reading will display the maximum

differential level(P- 4) » if set for fail-safe low: the differential reading will display zero » If set for fail-safe hold: the display will hold its present reading after the

fail-safe timer has expired

PL-443 6 – 23

In order to use the MultiRanger Plus as a differential level detector TB-1 must be wired as in Installation \ Installing the Transducer and both transducers must be installed at the same level.

A = transducers must be at the same elevation ( P-3 ). B = maximum differential ( Span, P-4 ) C = transducer should be mounted at least 0.3 m above

the highest liquid level and 0.3 m away from the wall for every 3 m / ST-25 or 6 m / ST-50 of measurement.

Differential Level Example

The application is to monitor the differential level across a sewage bar screen. When a differential level of greater than 12" is obtained, it is required that a rake be started. If the water level on either side rises above 20", a high level alarm is required.

The height from the common ( low ) level to the transducer face is 4 ft . A 4 - 20 mA output corresponding to the differential is required, and the 20 mA has been arbitrarily set to correspond to a 24" differential ( span ). In the event of a loss of echo, the MultiRanger Plus should go into a fail-safe high after 5 minutes.

select:

P-1 enter option "4", units in inches P-2 enter option "3", differential level P-3 enter "48", empty distance to transducer P-4 enter "24", span P-5 enter "11.81", blanking distance, ( use factory setting ) P-6 enter option "24", 4 - 20 mA output P-7 enter "1", display max 1 digit after decimal P-8 enter option "4", relay 1 - differential alarm P-9 enter "12", relay 1 - rake on

This would be used only to initiate the rake control circuitry.

PL-443 6 – 24

P-10 enter "6", relay 1 - reset this value can be arbitrarily set P-11 enter option "1", relay 2 - alarm function P-12 enter "20", relay 2 - alarm ON P-13 enter "19", relay 2 - alarm OFF P-20 enter option "14", relay 5 - scanner P-32 enter option "1", mA output on differential P-68 enter "393.7", fill damping 393.7 in / min. Normally this level

would rise over a period of days or weeks, therefore damping requirements would be fairly slow. Typically, the factory set damping of 32.81

can be used. P-69 enter "393.7", empty damping - same as fill damping P-74 enter option "1, fail-safe high P-75 enter "5", fail-safe timer

RUN

to re-enter run mode

CAL

PL-443 6 – 25

OPEN CHANNEL MEASUREMENT

APPLICATION PARAMETERS

General Relays Pump Control Vol. & Disp.

OCM Totalizer Custom Filter

Conversion

P-1 units P-8 1 function P-23 submers. P-34 tank P-40 primary P-51 OCM sim. P-60 full P-68 fill damp P-2 mode P-9 1 on P-24 1 hrs. P-35 dim. A P-41 time P-52 factor P-61 empty P-69 empty damp P-3 empty dist. P-10 1 off P-25 2 hrs. P-36 dim. L *P-42 expon. P-53 decimal P-62 offset P-70 rate disp.

◊P-4 span P-11 2 function P-26 3 hrs. P-37 convert *P-43 flume dim. P-54 low tot. P-63 vel. 20 °C P-71 rate avg. P-5 near blank P-12 2 on P-27 4 hrs. P-38 disp. offset P-44 spare P-55 high tot. P-64 vel. P-65 P-72 fuzz filter P-6 mA out P-13 2 off P-28 5 hrs. P-39 disp. opt’n ◊P-45 max. head P-56 remote tot. P-65 temp. P-73 agitator P-7 decimal P-14 3 function P-29 run-on P-46 max. flow P-57 flow samp. P-66 max. temp P-74 f-s mode

P-# required parameters P-# optional parameters

P-# parameters not required

* either parameter, depending on P-40 ◊ same

OCM APPLICATION

This application is specific to monitoring the flowrate in one of the four following categories of primary measuring devices. Refer to the respective drawings at the end of this section for weir and flume outlines and transducer location.

Single Exponential, these are flumes and weirs that can be characterized

by a single exponential term ( P-40 = 1 ) i.e. Q = K H

where : Q = flow K = constant H = head x = exponent, characteristic to the primary measuring device (flume or weir)

Examples :

Primary measuring device

exponent

Suppressed rectangular, Cipolletti weir, or Venturi flume 1.50 Parshall Flume, or Leopold Lagco 1.55 V-notch weir 2.50

etc ......

Refer to manufacturer’s specifications for the exact exponent.

The exponents listed above are for reference only.

Palmer-Bowlus flumes : typically those manufactured by Plasti-Fab

or Warminster Fiberglass ( P-40 = 2 )

H-flumes : excluding HS and HL sizes, as developed by the U.S.

Department of Agriculture, Soil Conservation ( P-40=3 )

Other : these are primary measuring devices that do not fit the

first three categories ( P-40 = 4 )

As most OCM applications are outdoors, the use of a temperature sensor is strongly recommended for optimum accuracy. Refer to Functional \ Temperature.

PL-443 6 – 27

Flow readings are calculated by the MultiRanger Plus as a function of the head under the transducer, installed upstream from the primary measuring device ( P-40 ). The flows are then accumulated in the arbitrary volume units chosen per the time units of P-41 in an 8 digit totalizer. In the event of a loss of echo, the totalizer will continue being incremented by the flowrate established from the last valid echo. The totalizer will stop being incremented and hold its last updated value when in the program mode or if the fail-safe timer expires ( "LOE" is displayed ).

The MulitRanger Plus can be programmed ( P-39 ) to normally display one of the following readings :

It must be noted that only half of the totalizer digits

can be accessed or viewed at one time.

e.g.

high total low total

P-54 P-55

8 digit total

1325 4769

To momentarily view an alternate reading while in run mode and P-39 ≠ 0, press the desired programmer key ( "READ" is not applicable to OCM ).

e.g.

normal display is high total, P-39 = 1

low total is momentarily displayed

normal display of the high total returns

If P-39 = 0, alternate readings cannot be momentarily displayed. Pressing the desired key will change the display and hold it there until the next alternate reading is selected.

PL-443 6 – 28

In the program mode, the high and low totals can be viewed or preset to any value by P-54 and P-55 respectively.

The flow readings ( high and low total ) may be scaled down by factors of 10 ( P-52 ) to slow down the totalizer’s rate of fill and its decimal point ( P-53 ) positioned for the resolution required. To change the scaling factor or decimal point location after totaling has begun, record the high and low totals and reset the totalizer to zero.

The MultiRanger Plus can be programmed to ignore low head, i.e. flows for heads less than that set in P-48 will not be accumulated in the totalizer. The low head cutoff is measured in % of maximum head ( P-45 ).

Further to alarm and pump functions, relays may be programmed to act as a momentary contact closure for a remote totalizer, flow sampler or time sampler ( refer to Application \ Relays ). The duration of a momentary contact closure is 200 msec for which the corresponding relay status LED will flash. As a remote totalizer relay, the contact is closed each time the displayed total is increased by the amount entered into P-56. As a flow sampler relay, the contact is closed each time the volume of liquid as set by P-57 and P-58 is pumped. As a time sampler relay, the contact is closed at the rate of the time period.

The mA output responds to the head or flow ( P-50 ). In the event of fail-safe due to loss of echo, the mA output will respond as programmed by P-6 and P-74.

When programming the MultiRanger Plus for the OCM function, the empty distance to transducer ( P-3 ) may be considered and entered as the distance from the transducer face to the 0 head or no flow reference level. If this measurement is not easily obtained, P-3 can be estimated and corrected via P-47. This is referred to as the Auto Zero calibration and requires the MultiRanger Plus to compare a physical measurement ( from wall gauge, dipstick or stilling well ) to the ultrasonic measurement via P-47. Refer to OCM Auto Zero Example.

It should also be noted that when operating in the OCM function: percent display, volume conversion ( P-34 ) and convert display ( P-37 ) are inoperative. Empty calibration ( P-61 ) must be clear, i.e. 4 hyphens in the display.

PL-443 6 – 29

An important consideration in OCM applications is that many primary measuring

P-87 = d x 110

P-3

devices have the potential of running dry. In such cases, it must be insured that the range extension ( P-87 ) is sufficient so that the floor of the channel or of the converging section of the flume can be read. Otherwise, false readings may be obtained indicating flow.

transducer

P-3

range

OCM Example

9" Parshall Flume

» max flow rate - Q max = 4.112 MGD

» max head - H max = 1.61

% range

extension

P-87

depth

+ 10%

margin

Q = 1.98 H

bottom of weir notch,

0 head

channel bottom

1.53

where Q = flow rate, MGD ( million gallons per day ),

H = head, feet

= 4,112,000 gal. / day

» transducer is mounted 3 ft above the zero flow level » max flow rate display = 4,112

i.e. one count = 1000 gal.

PL-443 6 – 30

select:

P-1 enter option "3", units in feet P-2 enter option "5", OCM P-3 enter "3", zero level distance to transducer P-4 enter "1.61", max head P-5 enter "1", near blanking distance, minimum allowable P-39 enter option "4", display flowrate in units per day P-40 enter option "1", primary measuring device - exponential P-41 enter option "4", flowrate time units - per day P-42 enter "1.53" exponent from manufacturer’s specs.

for 9" Parshall Flume P-46 enter "4112", max flow in thousand gal / day P-49 enter option "3", flowrate decimal point display max 3 digits

after decimal P-52 enter option "0", totalizer convert display total is divided by 1 before

being displayed or 1 count per thousand gallons. P-53 enter option "2", totalizer decimal point display 2 digits after

decimal or resolution equals 1/100th of a count. P-68 enter "32.81", fill damping 32.81 ft / min. As the head would

fluctuate over a period of hours, damping

requirements would be fairly low. Typically, the

factory set damping of 32.81 can be used. P-69 enter "32.81", empty damping - same as fill damping

RUN

to re-enter run mode

CAL

OCM Auto Zero Example

Further to OCM Example, the following is required :

» alarm at 10% overflow ( approx. = 1.8 ft ) and 0 head » in the event of loss of echo, the MultiRanger Plus is to go into

low alarm after 45 sec. » head to read to 1 decimal place » sampler contact every day » head under "1" ( 40 thousand gal / day ) not be totalized » 4 - 20 mA output to respond to flow

PL-443 6 – 31

select :

P-3 enter "3.33" estimated empty distance to transducer P-6 enter option "2", 4 to 20 mA P-7 enter option "1", decimal location for head display

max 1 digit after decimal P-8 enter option "1", relay 1 - alarm function P-9 enter option"1.8", relay 1 - alarm ON P-10 enter "1.5", relay 1 - alarm OFF P-11 enter option "1", relay 2 - alarm function P-12 enter "0", relay 2 - alarm ON P-13 enter ".3", relay 2 - alarm OFF P-14 enter option "13", relay 3 - time sampler contact P-47 Auto Zero

CLR ENTER

Press and then 4 hyphens must appear in the display.

MEAS

Press at least 5 times to insure that the MultiRanger Plus will obtain a stable ultrasonic measurement. The resultant reading will be the apparent head with respect to the estimated P- 3 = 3.33 ft . Enter "physical head measurement", over the displayed value previously obtained. This is the true head measurement from wall gauge, dipstick or stilling well, taken at the same time as the ultrasonic measurement and representing the same head measurement point as seen by the transducer. The physical head measurement must not be in the near blanking zone. An offset value, which is the apparent head minus the true head, is automatically calculated and entered into P-62. P-62 can only be cleared by P-47.

P-48 enter "5.2", low head cutoff is 5.2% of P-45 flow for head

below "1" ( 40 thousand gal. / day )

will not be totalized

1" = 0.052 = 5.2% 12" / ft x 1.61 ft

P-50 enter option "2", mA output responds to flow P-59 enter "1", time sampler control closure once every hour P-74 enter option "2", fail-safe low P-75 enter option ".75", fail-safe timer, 45 sec.

RUN CAL

to re-enter run mode

PL-443 6 – 32

Single Exponential, P-40 = 1

Weirs

3 to 4

max

weir profile

* The transducer must be above the

Applicable Weir Profiles

transducer *

maximum head by at least the

blanking value, P-5.

V - notch or

triangular

suppressed

rectangular

Non-Applicable Weir Profiles

contracted

compound

rectangular

Flows through these weirs may be measured using the

universal head vs flow characterization, P-40 = 4.

PL-443 6 – 33

cipolleti or

trapezoidal

Poebing

sutro or

proportional

approximate

exponential

Single Exponential P-40 = 1 ( cont’d )

FLUMES Parshall Flume

head

plan

transducer

/3 C

» sized by throat width » set on solid foundation » general free flow equation is Q = K H

» For rated flows under free flow conditions, the head is measured

at 2 / 3 the length of the converging section from the beginning of the throat section.

» Position the transducer such that it is centered over the flow at a

minimum head.

Khafagi Venturi

front

15 cm ( 6" )

transducer

plan

side

where: Q = flow rate

K = constant H = head x = exponent

head

» for rated flows under free flow conditions, the head is measured 15 cm

( 6" ) upstream from the beginning of the converging section.

» position the transducer such that it is centered over the flow at a

minimum height of 30 cm ( 12" ) above the maximum head.

PL-443 6 – 34

sidefront

Single Exponential, P- 40 = 1 (cont’d)

transducer

FLUMES (cont’d) Leopold Lagco (as manufactured by Leopold Co., Inc.)

throat

plan

side

diverging

head

converging

point of measurement

» designed to be installed directly into pipelines and manholes » Leopold Lagco may be classed as a rectangle Palmer-Bowlus flume » sized by pipe ( sewer ) diameter » for rated flows under free flow conditions, the head is measured at a

point upstream referenced to the beginning of the converging section. Refer to the following table:

front

Flume Size Point of Measurement

(pipe dia. in inches) cm inches

» general free flow equation is Q = K H

» position the transducer such that it is centered over the flow at a

minimum height of 30 cm ( 12" ) above the maximum head.

PL-443 6 – 35

4 - 12 2.5 1

15 3.2 1 18 4.4 1 3/ 21 5.1 2 24 6.4 2 30 7.6 3 42 8.9 3 48 10.2 4 54 11.4 4 60 12.7 5 66 14.0 5 72 15.2 6

, where: Q = flow rate

4 4

K = constant H = head x = exponent

Single Exponential, P-40 = 1 ( cont’d )

FLUMES ( cont’d )

plan

Flow through the following flumes may be measured using the

universal head vs flow characterization, P-40 = 4.

Cutthroat Flume

» similar to Parshall flume

except that the floor is flat bottomed and throat has no virtual length

» refer to manufacturer’s

specifications for flow equation and point of head measurement.

Trapezoidal Flume

» similar to Parshall flume

except that the floor is flat bottomed and walls are sloped.

isometric

Dual Range ( nested ) Parshall Flume

plan

PL-443 6 – 36

» two flumes, a

larger on top of the smaller, in order to handle a larger range of flows.

front

Palmer-Bowlus Flume, P-40 = 2

transducer

front

( typically those manufactured by Warminster Fiberglass or Plasti-Fab )

D / 2, point of measurement

» sized by pipe diameter, D. Enter value ( in units of P-1 ) into P-43. » flume relief is trapezoidal » designed to install directly into pipelines and manholes » head is referenced to bottom of the throat not to bottom of pipes » for rated flows under free flow conditions, the head is measured at a

distance of D / 2 upstream from the beginning of the converging section

» position the transducer such that it is centered over the flow at a

minimum height 30 cm ( 12" ) above the maximum head

plan

0 head

side

PL-443 6 – 37

H Flumes, P-40 = 3

( as developed by the U.S.Department of Agriculture, Soil Conservation Service )

transducer

point of

measurement

plan

front

side

» sized by max depth of flume, D. Enter value ( in units of P-1 ) into P-43. » approach is preferably rectangular, matching width and depth for

distance 3 to 5 times the depth of the flume » flow range 100 : 1 » may be installed in channels under partial submergence

( ratio of downstream level to head ).

Typically: » 1% error @ 30% submergence

» 3% error @ 50% submergence

» for rated flows under free flow conditions, the head is measured at a

point downstream for the flume entrance.

Flume Size Point of Measurement

( D ft ) cm inches

0.5 5 1 3/

0.75 7 2 3/

1.0 9 3 3/

1.5 14 5 1/

2.0 18 7 1/

2.5 23 9

3.0 28 10

4.5 41 16 1/

4 4 4 2 4

4 4

» H flumes come with a flat or sloping floor.

The same flow table can be used as error is less than 1%. » position the transducer such that it is centered over the flow at a

minimum height of 30 cm ( 12" ) above the maximum head.

PL-443 6 – 38

Other, P- 40 = 4

Where the primary measuring device does not fit one of the three other categories, P-40 may be programmed for one or two head versus flow characterizations:

» P-40 = 4 : curved » P-40 = 5 : linear

Select the characterization which most closely fits the flow characteristics of the primary measuring element.

linear

curved o w

Head

Characterization is achieved by entering the head ( H parameter ) and corresponding flow ( F parameter ) either from emperical measurement or from the manufacturer’s specification. The more breakpoints that are defined, the more accurate will be the flow measurement. Breakpoints should be concentrated in areas exhibiting the higher degrees of non linear flow. A maximum of eleven breakpoints can be defined.

Head data is entered in the linear units selected ( P-1 ) and flow data is entered in the desired units of flowrate.

Other Flumes Example

The application is to measure the flow across a 4 ft rectangular weir with end contractions. The flow is characterized by the following formula:

cfs = 3.33 ( L-0.2H ) H

1.5

where: cfs = flow in cu ft / sec

L = length of crest H = head

PL-443 6 – 39

select :

P-1 enter option "3", units in feet

advance to:

P-2 enter option "5", OCM P-3 enter "4", empty distance to transducer P-4 enter "3", span P-5 enter "1", near blanking distance P-39 enter option "4", display flowrate P-40 enter option "4", universal head vs flow

press display will show

H - 1

ALT DISP

ENTER

- - - -

0.0 0 0

H - 2

(then)

- - - -

ENTER

» » »

ENTER

ALT

DISP

ALT

DISP

PL-443 6 – 40

0.3 0 0

H - 3

0.6 0 0

H - 10

2.7 0 0

H - 11

3.0 0 0

F - 11 F - 11

F - 1

- - - -

(then)

- - - -

press display will show

5 8

ENTER

0.0 0 0

F - 2

2.1 5 6

F - 3

6.0 0 5

(then)

- - - -

» » »

F - 10

(then)

- - - -

ALT

DISP

CLR

ENTER

5 1.1 2

F - 11

5 8.8 3

(then)

- - - -

F - 11

P - 4 0

P-41 enter option "1", flowrate time units per sec P-46 enter "58.83", maximum flowrate in cu ft / sec P-49 enter option "3", flowrate decimal point display max

3 digits after decimal

P-52 enter option "0", totalizer convert display is divided by 1 before

being displayed or 1 count per thousand cu ft

P-53 enter option "2", totalizer decimal point display 2 digits after

decimal or resolution equals 1/100th of a count

RUN

to re-enter run mode

CAL

PL-443 6 – 41

APPLICATIONS WITH STANDPIPES

In many solids and liquid applications, access to the vessel must be made via a standpipe. In such cases, Milltronics can provide flange mounted transducers that will readily mate to the standpipe.

The maximum standpipe length that can be used without additional near blanking ( P-5 not greater than 0.3 m ) is 200 mm ( 8" ). For greater standpipe lengths, up to 30" long, near blanking must be extended to 150 mm ( 6" ) beyond the end of the pipe.

The preferred dimension when selecting a standpipe arrangement is a 100 mm ( 4" ) diameter pipe, 300 mm ( 12" ) long. Near blanking would be set at 460 mm ( 18" ).

Standpipe Example

Referring to Volume Application \ Volume Example, if the transducer were mounted to a 150 mm diameter flanged standpipe 0.5 m long, instead of a 1 m diameter manhole, the following will be required :

select :

P-5 enter ".65", near blanking

0.50 m ( standpipe length ) +0.15 m ( blanking past pipe )

0.65 total blanking distance

to re-enter run mode.

RUN CAL

PL-443 6 – 42

■

PARAMETER DESCRIPTION

( F ) indicates the parameter’s factory setting, where applicable.

For reference only, factory set values

may change with software revisions.

( V ) indicates that parameter can be viewed only, not entered.

P-0 security

This parameter can be used to lock out the programmer such that the content of parameters P-1 through P-99 can not be changed. This however does not prevent the parameters from being selected and viewed. The programmer is locked out if the content of P-0 is of any value other than 1954. P-0 can only be direct accessed.

content = 1954, programmer functional ( F )

≠ 1954, programmer locked out = -1, pumps active during simulation

P-1 units of calibration and display

enter: 1 = meters ( F ) 1

2 = centimeters 2 3 = feet 3 4 = inches 4

= calibrate in meters, display in %

= calibrate in centimeters, display in %

= calibrate in feet, display in %

= calibrate in inches, display in %

For % display, entry must be made as #

and will be displayed as " # P "

e.g. Press and then , the display will show " 3 P ".

P-2 mode of measurement

enter: 1 = material level

2 = space ( F ) 3 = differential level 4 = volume totalizer ( pump totalizer ) 5 = OCM ( open channel measurement )

P-3 empty distance to transducer

enter desired amount ( F = 10.00 m )

PL-443 7 – 1

P-4 span

» distance between full ( high ) and empty ( low ) levels » maximum level differential if DLD ( P-2 = 3 ) is selected » maximum head if OCM ( P-2 = 5 ) is selected

enter desired amount ( F = 10.00 m )

P-5 near blanking

normally leave at factory setting. However for blanking extension, entry must be slightly larger than distance to end of standpipe or far side of obstruction. Blanking should not extend all the way into span level. Some margin of material span should be allowed to avoid loss of echo.

enter distance required, in units as set in P-1 ( F = 0.300 m )

P-6 milliamp output

enter: 0 = off

1 = 0 to 20 mA 2 = 4 to 20 mA 3 = 20 to 0 mA 4 = 20 to 4 mA

P-7 decimal point location

Sets the maximum number of digits after the decimal. The number of digits after the decimal will automatically reduce to avoid display overflow.

enter: 0 = no digits after decimal

1 = one digit after decimal 2 = two digits after decimal ( F ) 3 = three digits after decimal

P-8 relay 1 function

Refer to Functional \ Relays.

enter desired option ( F = 0 )

P-9 / 10 relay 1- ON / OFF setpoints

enter level in units as selected in P-1 or °C ( F = - - - - )

PL-443 7 – 2

P-11 relay 2 function

Refer to Functional \ Relays.

enter desired option ( F = 0 )

P-12 / 13 relay 2 - ON / OFF setpoints

enter level in units as selected in P-1 or °C ( F = - - - - )

P-14 relay 3 function

Refer to Functional \ Relays.

enter desired option ( F = 0 )

P-15 / 16 relay 3 - ON / OFF setpoints

enter level in units as selected in P-1 or °C ( F = - - - - )

P-17 relay 4 function

Refer to Function \ Relays.

enter desired option ( F = 0 )

P-18 / 19 relay 4 - ON / OFF setpoints

enter level in units as selected in P-1 or °C ( F = - - - - )

P-20 relay 5 function

Refer to Functional \ Relays.

enter desired option ( F = 0 )

P-21 / 22 relay 5 - ON / OFF setpoints

enter level in units as selected in P-1 or °C ( F = - - - - )

PL-443 7 – 3

Parameters P-23 through P-33 are used specifically for pump applications.

" ratio " setpoints

" service hours "

P-23 submersible transducer

P-24 relay 1 pump log *

P-25 relay 2 pump log *

P-26 relay 3 pump log *

P-27 relay 4 pump log *

P-28 relay 5 pump log *

Refer to Applications \ Pump Control Applications.

enter: 0 = normal ST- series transducer ( F )

1 = submersible transducer

These parameters are divided into three levels of subparameters:

Access is made by scrolling through the levels.

press display will show

PL-443 7 – 4

» " service hours " log » " pump starts " log » " ratio " setpoint

initial access ( service hours )

" pump starts "

press display will show

factory setting

To view the service hours

at the ‘P’ parameter

ALT

DISP

e.g. 1,234 hours of service ( F = 0.000 )

To view the number of starts

at the ‘C’ parameter

ALT

DISP

e.g. 321 pump starts ( F = 0 )

To view the ratio setpoint

at the ‘A’ parameter

ALT

DISP

To reset or preset the " service hours " or " pump starts" log

e.g. " service hours " selected

ALT

DISP

e.g. 1,234 hours

ENTER

To set the service " ratio "

ALT

DISP

ENTER

PL-443 7 – 5

e.g. reset to zero

e.g. 0 " service hours "

" ratio " setpoint

e.g. 20

e.g. 15

" ratio " setpoint is now 15

P-29 pump run-on interval

the cyclical period in hours, in which a pump run-on duration may occur. The initial interval begins upon return to the run mode or resumption of power to the MultiRanger Plus. Subsequent intervals begin at the end of the previous interval. Intervals end after the time entered has expired or when the power or run mode is interrupted.

enter interval in hours ( F = - - - - )

P-30 pump run-on duration

the amount of time which the lead pump will continue pumping after it has reached its OFF setpoint.

enter duration in seconds ( F = 0 )

P-31 spare

P-32 DLD milliamp output

when operating on the DLD mode, the milliamp output can be set to correspond either to the differential or to the level under transducer #1

enter: 1 = differential ( F )

2 = level

P-33 inflow / discharge totaling

refer to Applications \ Pump Totalizer Application

enter: 1 = estimated inflow or discharge volume as added

to the pumped volume total ( F ) 2 = estimated inflow or discharge volume is omitted from the pumped volume total.

PL-443 7 – 6

Parameters P-34 through P-39 are used for volume and display conversion.

P-34 tank shape for volumetric conversion

enter: 0 = non volume - linear level measurement ( F )

1 = flat bottom

2 = conic or

pyramidic bottom

3 = parabolic bottom

4 = half sphere bottom

5 = flat slope bottom

6 = horizontal cylinder, flat ends

7 = horizontal cylinder,

parabolic ends

8 = sphere

( cont’d )

PL-443 7 – 7

9 = custom tank design *

return to ‘P’ parameters

( refer to Applications \ Volume Application )

This option is divided into two levels of subparameters:

H - # where: H = level coordinate F - # F = volume coordinate

# = breakpoint 1 to 11

Access is made by scrolling through the levels.

press display will show

ALT

DISP

ENTER

Setting of the subparameters is done in the same way as with the ‘P’ parameters.

To exit the " H " and " F " subparameters:

If P-34 ≠ 0, reading will be in percent of full volume. For volumetric reading, set conversion factoring by using P-37.

P-35 tank dimension ‘A’

the height of the bottom section of tank shapes 2, 3, 4, 5 or the length of one end section in tank shape 7. ( not required for other tank shapes )

enter " dimension A ", in units selected per P-1 ( F = 0000 )

PL-443 7 – 8

select any ‘H’ or ‘F’ parameter

CLR

P-36 tank dimension ‘L’

horizontal length of tank shape excluding parabolic ends ( not required for other tank shapes ).

enter " dimension L ", in units selected per P-1 ( F = 0.0 0 0 )

P-37 convert display

parameter value is the factor by which the measurement is to be multiplied by before being displayed. Range is 0.001 to 9999. enter desired factor ( F = 1 )

P-38 display offset

this value is added to material space, volume or ullage measurement before being displayed ( P-39, P-76 or " * " key ). The mA output and alarms are not affected by the offset. The display offset is entered in the units programmed, subject to P-1, P-34 and P-37. enter offset required ( F = 0.000 )

P-39 display reading options

enter : 0 = hold last alternate reading selected ( F )

1 = high total: 4 highest digits of the 8 digit totalizer

( pumped volume and OCM only )

= point 1: DLD level / transducer #1

2 = low total: 4 lowest digits of the 8 digit totalizer

( pumped volume and OCM only )

= point 2: DLD level / transducer #2

3 = head ( OCM only )

4 = flow rate ( OCM only )

5 = reading level, space, differential, volume or ullage

In the run mode, the programmer keys illustrated can be pressed to view alternate readings. The display will return to the reading option selected ( except option 0 ) after momentarily displaying alternate reading.

PL-443 7 – 9

Parameters P-40 through P-50 used specifically for

return to ‘ P ’ parameters

OCM applications. Refer to Applications.

P-40 primary measuring device

enter option: 1 = exponential ( F )

* these options are divided into 2 levels of subparameters:

H - # where: H = level coordinate F - # F = flow coordinate

# = breakpoint 1 to 11

Access is made by scrolling through the levels.

press display will show

ALT

DISP

2 = Palmer-Bowlus 3 = H-flume 4 = universal head vs flow - curve * 5 = universal head vs flow - linear *

Setting of the subparameters is done in the same way as with the ‘ P ’ parameters.

To exit the ‘ H ’ and ‘ F ’ subparameters

PL-443 7 – 10

ENTER

select any ‘ H ’ or ‘ F ’ parameter

CLR

P-41 flow rate time units

enter option: 1 = per second

P-42 OCM exponent

exponent for primary measuring devices, P-40 = 1 where Q = K H Obtain from manufacturer’s specifications.

enter " exponent " ( F = 1.550 )

P-43 flume dimension ( P-40 = 2 or 3 )

enter ‘ D ’, flume size in units of P-1 ( F = 1.000 )

P-40 = 2

2 = per minute 3 = per hour 4 = per day ( F )

P-40 = 3

Palmer Bowlus D = pipe or sewer dia.

P-44 spare

P-45 maximum head

this is the head corresponding to the max flow rate. This parameter is identical to P-4, span. A change to either parameter will simultaneously change the other. ( F = 10.00 )

P-46 maximum flow rate

this is the flow rate which occurs at maximum head and determines the mA output span ( refer to Functions \ Analog Output ). Obtain from manufacturer’s specifications.

enter " maximum flow rate ", volume units are arbitrary ( F = 1000 )

PL-443 7 – 11

H Flume

P-47 Auto zero

this parameter allows automatic zero calibration for the empty distance to transducer parameter ( P-3 ) when the physical measurement is not obtainable.

P-3 is the estimated empty distance to the transducer face with the transducer aimed at the proper portion of the crest in the open channel and at a height of at least 1 ft above maximum head.

MEAS

Press at least five times and until a stable reading is obtained on the display. The reading, regardless of the height of the transducer, will be the apparent head with respect to the estimated empty distance, P-3. Enter the actual physical measurement of head at a point beneath the transducer.

ENTER

Press , the MultiRanger Plus will then calculate the correct zero reference level. The offset will be automatically entered into P-62.

P-48 OCM low head cutoff

flows for head below this level will not be totalled. Unit of cutoff is percent of maximum head (P-45)

enter "percentage required" (F=5.000)

P-49 OCM decimal point

sets the maximum number of digits after the decimal for display of flow rate ( P-39 = 4 ). The number of digits after the decimal will automatically reduce to avoid display overflow.

enter: 0 = no digits after decimal

1 = one digit after decimal 2 = two digits after decimal ( F ) 3 = three digits after decimal

P-50 OCM mA output

refer to Functional \ Analog Output

enter: 1 = mA responds to head ( F )

2 = mA responds to flow

PL-443 7 – 12

94/09/20

P-51 OCM simulation

ALT

DISP

press , display will show previous flow enter head in units programmed, display will show head

ENTER

press , display will show corresponding flow

Parameters P-52 through P-59 are used specifically for OCM

and pump totalizer applications. Refer to Applications.

P-52 totalizer display factor

totalizer display of flow or volume pumped is factored by a power of 10 to determine the count per flow. The factor is selected as follows:

enter: – 3 =multiply by 1000

– 2 =100 – 1 =10

0 =divide by 1 ( F ) 1=10 2 =100 3 =1,000 4 =10,000 5 =100,000 6 =1,000,000 7 =10,000,000

e.g. present flow rate is 450 gal / sec

if P-52 = 0, totalizer is incremented at a rate of 1 count per gallon if P-52 = 3, totalizer is incremented at a rate of 1 count per thousand gallons

P-53 totalizer decimal point location

sets the number of digits after the decimal point for the low total only. The decimal point will not float.

enter: 0 = no digit after decimal

1 = one digit after decimal 2 = two digits after decimal ( F ) 3 = three digits after decimal

P-54 low total

this parameter will display the 4 lowest digits of the 8 digit totalizer used in pump totalizer or OCM application. The parameter will also allow the display to be reset to any value. ( F = 00.00 )

PL-443 7 – 13

94/09/20

P-55 high total

the parameter will display the 4 highest digits of the 8 digit totalizer used in pump totalizer or OCM applications. The parameter will also allow the display to be reset to any value. ( F = 0000 )

P-56 remote totalizer contact control.

a momentary closure of the remote totalizer contact occurs once each time the entered flow or pumped volume has passed.

enter option: – 3 = 0.001

– 2 = 0.01 – 1 = 0.1

0 = 1( F ) 1 = 10 2 = 100 3 = 1,000 4 = 10,000 5 = 100,000 6 = 1,000,000 7 = 10,000,000

P-57 flow sampler control & P-58

a momentary closure of the flow sampler contact occurs once each time a volume of y x 10

, as defined by P-57 (x) and P-58 (y),

flows or is pumped.

enter P-57 (x) = base 10 exponent, – 3 to 7 ( F = 0 )

enter P-58 (y) = mantissa, 0.001 to 9999 ( F = 1.000 )

e.g. if P-57 = 3 and P-58 = 5, then a sampler contact closure will occur each time 5 x 10

P-59 time sampler control

a momentary closure of the time sampler contact occurs each time the entered amount of time in hours has elapsed ( F = - - - - )

PL-443 7 – 14

= 5000 units of volume has passed

Parameters P-60 through P-67 are used to achieve

P-60 full calibration

this provides a measurement offset compensation on a full tank. A measurement offset might occur when parameters 3 and 4 do not exactly match the tank dimensions referenced for volume conversion. ( F = - - - - )

Fill tank as much a permissible, but without going into the blanking zone.

Press , the MultiRanger Plus will take a measurement and display the space or level ( P-2 ) in the linear units chosen ( P-1 ) regardless if percent, volume or convert display is used. Press at least 5 times and insure that a stable reading is being obtained.

Enter the actual space or level ( P-2 ).

Press , the MultiRanger Plus will now calculate the correct measurement offset to be used in future measurements and automatically enter it into P-62.

specialized or custom calibration.

MEAS

ENTER

P-61 empty calibration

this provides sound velocity compensation on an empty tank. This is required on a volume application where the atmosphere in the tank is other than air or the atmospheric temperature is constant but other than 20 °C and no temperature sensor is being used. ( F = - - - - )

Empty tank is much as permissible. Leave filled with normal vapour and at normal operating temperature.

MEAS

Press , the MultiRanger Plus will take a measurement and display the space or level (P-2) in the linear units chosen (P-1) regardless if percent, volume or convert display is used. Press at least 5 times and insure that a stable reading is being obtained.

Enter the actual space or level ( P-2 ).

ENTER

Press , the MultiRanger Plus will now calculate in correct sound velocity to be used in future measurements and automatically enters it into P-63 and P-64.

PL-443 7 – 15

MEAS

P-62 measurement offset

this displays the measurement offset: used in conjunction with a full tank calibration, P-60, or an offset value may be entered directly. The offset is added to the ultrasonic measurement such that its effect will be carried through the reading ( P-39, P-76 or ), mA output and relay setpoints. ( F = 0.000 )

P-63 sound velocity at 20 °C

can be used to enter the known velocity, at 20 °C, of sound in a particular gas or vapour or to view the resultant velocity of an empty calibration ( P-61 ), normalized to 20 °C. ( F = 344.1 )

the units of velocity are assumed to be:

meter / sec if P-1 = 1 ( meters ), 2 ( centimeters ) feet / sec if P-1 = 3 ( feet ), 4 ( inches )

P-64 velocity at P-65

can be used to enter the known velocity, at the temperature of P- 65, of sound in a particular gas or vapour or to view the resultant velocity of an empty calibration, at the temperature of P- 65. ( F = 344.1 )

the units of velocity are assumed to be:

meters / sec if P-1 = 1 ( meters ), 2 ( centimeters ) feet / sec if P-1 = 3 ( feet ), 4 ( inches )

P-65 air temperature in °C, as measured by temperature sensor or programmed

transducer operating temperature, if sensor is not used, enter temperature required in °C ( F = 20 °C )

P-66 maximum air temperature in °C

records maximum air temperature measured by temperature sensor. Press then to reset ( F = – 99 °C )

CLR

ENTER

P-67 minimum air temperature in °C

records the minimum air temperature measured by temperature sensor. Press then to reset ( F = 150 °C )

CLR

ENTER

PL-443 7 – 16

Parameters in P-68 through P-75 are used to stabilize the reading.

These are general purpose parameters, suitable for all applications.

P-68 fill damping

is the maximum rate at which the display reading and analog output will change under filling conditions. The damping rate is measured in P-1 units per minute and has a range of 0.001 to 9999. Thus the smaller the number entered, the greater the damping.

enter desired amount ( F = 10.00 m / min ).

In pump up applications, for safe operation it is suggested that the damping value allow for level changes at the pumps maximum operating capacity, rather than the process design value.

P-69 empty damping

is the maximum rate at which the display reading and analog output will change under emptying conditions. The damping rate is measured in P-1 units per minute and has a range of 0.001 to 9999. Thus the smaller the number entered, the greater the damping.

enter desired amount ( F = 10.00 m / min ).

In pump down applications, for safe operation it is suggested that the damping value allow for level changes at the pumps maximum operating capacity, rather than the process design value.

P-70 process rate display ( V )

display the rate of filling ( + ) or emptying ( – ) in P-1 units / minute

P-71 process rate filter

controls the response of the rate display

enter option: 0 = continually averaged rate

1 = update rate every minute or 50 mm ( F ) 2 = update rate every 5 minutes or 100 mm 3 = update rate every 10 minutes or 300 mm 99 = programmable *

PL-443 7 – 17

this option is divided into two levels of subparameters:

» S-71: time in seconds

» D-71: distance in linear units as set in P-1

Access is made by scrolling through the levels.

press display will show

ALT

DISP

ENTER

Setting the subparameters is done the same way as with the ‘ P ’ parameters.

P-72 fuzz filter

the fuzz filter is designed to keep the display constant when minor changes on the surface of the liquid ( ripples ), electrical noise or air movements in the vessel occur.

enter: 0 = off

P-73 agitator discrimination

enter: 0 = off

PL-443 7 – 18

1 = on ( F )

P-74 fail-safe mode

in the event of a loss of echo, the MultiRanger Plus will flash " LOE " and go into one of the following fail-safe modes after the timer ( P-75 ) expires

enter: 1 = high

2 = low 3 = hold last entry ( F )

P-75 fail-safe timer

the amount of time delay before going into fail-safe mode enter " desired amount of time ", in minutes ( F = 15.00 )

e.g. for 30 sec. time delay, enter " 0.5 "

Parameter P-76 through P-78 are used for measurement and simulation.

DISPLAY:

select desired parameter

ALT

P-76, 77 or 78 press , the display will show the reading of the last

ultrasonic measurement

DISP

ENTER

press to update ultrasonic measurement

SIMULATION:

select desired parameter

P-76, 77 or 78 press , the display will show the simulated rise and

PL-443 7 – 19

ENTER

fall of the material level

The simulation will raise and lower the material level through the calibrated span, P-4, at a rate of 1% of the span per second. On the DLD application, one side ( relay / LED 5 ON ) is kept at a constant level, while the other side ( relay / LED 5 OFF ) is varied. The DLD simulation will alternate every 6 seconds.

Pressing during simulation causes the apparent level to rise. Holding in , increases the rate of filling. Pressing causes the level to fall. Holding in , increases the rate of emptying. During simulation, relay LED’s, alarm relays and mA output are all enabled to allow full response of the MultiRanger Plus. Pump relays are maintained in a de-energized state throughout simulation ( unless P-0 = – 1 ), however the corresponding relay LED’s will respond. Relay LED’s for pumps will not be illuminated within 1 second, simulating the 10 second start delay under actual operation. As damping, fuzz filtering and agitator discrimination are not required, they are turned off.

To end simulation program, press twice.

P-76 reading

this is one of the optional displays selected in the display options parameter, P-39. It can also be obtained by pressing . This reading incorporates both the measurement and display offsets.

DISP

MODE READING

( P-2 ) ( linear, %, volume )

material material

space space

DLD differential

volume total material

OCM head

ALT

P-77 material level

this is the actual material level referenced to zero or empty level in m, cm, ft or in.

P-78 space or distance

this is the actual distance from the transducer face to the material level in m, cm, ft. or in.

PL-443 7 – 20

Parameters P-79 through P-88 are used for

echo processing and analysis.

P-79 scope displays

window marker Curve - TVT Profile

select any combination of scope displays 0 = scope display off ( display ‘ _ ’ ) ( F = _ _ _ _ ) 1 = scope display on ( display ‘ u , n, C or P’ )

press

e.g. to display the curve and the profile on the oscilloscope:

press , enter " 0110 " press , display will show

P-80 echo confidence ( V )

a measure of echo reliability. Press to make an ultrasonic measurement and the updated echo confidence will be displayed. This feature is useful when aiming the transducer.

ENTER

DISP

ENTER

LCD Display

ALT

MEAS

LCD display

short pulse long pulse

display:

e.g. short pulse confidence of ‘11’ / long pulse

confidence of ‘2’ (dB)

e.g. short pulse confidence of ‘19’ / no long

pulses transmitted

pulses transmitted, but no echo (check for faulty transducer or wiring)

submersible transducer submerged ( P-23 = 1 )

PL-443 7 – 21

P-81 confidence threshold for short measurement

minimum echo confidence for echoes within 1 meter of transducer. If echoes are beyond 1 meter or have a confidence under the threshold level, the short measurement will be ignored and the long measurements will become valid.

Enter threshold. ( F = 10 )

Typical usage; if transducer were picking up small unwanted echoes from close in, increase threshold to a value above that of the echo confidence ( P-80 ) so that close in echoes are no longer detected.

P-82 confidence threshold for long measurement

minimum echo confidence for long measurements. If no echo confidences meet this threshold, a loss of echo condition will prevail.

Enter threshold. ( F = 5 )

Typical usage; during filling of vessel, material intersects beam path. Instead of displaying wrong level, increasing threshold to a value above that of the echo confidence ( P-80 ) will force the MultiRanger Plus into fail-safe.

P-83 echo strength ( v )

displays the absolute strength of the selected echo in dB above 1 uV rms

P-84 noise

average and peak ambient noise, in dB above 1 uV rms

Ambient noise includes acoustical and electrical noise being picked up by the transducer / receiver circuit when the transmit / receive cycles have been disabled during the program mode.

LCD display

average

peak

PL-443 7 – 22

P-85 echo processing algorithms for long pulses

P-86 TVT curve

P-87 range extension

( for short pulses, a fixed algorithm is automatically selected )

enter: 1 = best echo of first and largest ( F )

2 = first echo 3 = largest echo

enter: 1 = standard ( F )

2 = flat

typical usage; solids applications where low confidence is obtained,

using flat echo extraction may yield higher confidence.

used to extend the measurement range into the far end blanking.

In applications where the zero level does not correspond to the bottom of the vessel and it is desired to monitor this zone, the far end blanking may need to be reduced. This is accomplished by entering a range extension value as the percentage of P-3 which equals the extra distance required. If it found that false echoes are appearing ahead of the far end blanking zone, the range extension should be decreased by reducing the factory set value of 20%.

enter, as percent of P-3, distance below 0 not blanked ( F = 20 )

P-88 number of transmit pulses

this parameter is used to select the number and duration of the pulses to be transmitted per measurement.

enter: 1 = one short pulse only *

2 = one long pulse only ** 3 = two long pulses and one short pulse 4 = one short pulse if target is within 1 m, or one short pulse and two long pulses if target is beyond 1 m ( F )

* CAbL LOE message inactive ** submergence detection inactive

PL-443 7 – 23

Parameters P-89 through P-98 are used for testing.

P-89 software revision number ( V )

P-90 memory test (V)

ENTER

press the display will show

‘ PASS ’ » memory test passed

‘ 1 ’ » RAM failure ‘ 2 ’ » EPROM failure ‘ 3 ’ » EEPROM failure

P-91 LCD, LED and relay test ( V )

This test will cause the relays to change state.

Be sure to lock out all applicable alarms,

pumps and machinery before pressing " Enter "

ENTER

press » LCD characters should flash sequentially

» all relays should turn on and off sequentially » all LED’s should flash sequentially » press any key to stop

P-92 mA output test

used to display the last mA output ( in the RUN mode, press 5 )

A test value may be entered with the keypad or obtained by pressing

MEAS

. The value displayed is transmitted via TB1. Upon returning to the RUN mode, the parameter value will assume the actual mA output level. ( F = 0.000 )

P-93 temperature sensor resistance in K ohms (V)

P-94 transmitter test ( V )

ENTER

press , the transmitter will fire at a regular rate and the transmit neon LI will flash correspondingly. Press any other key to stop. ( F = - - - - )

PL-443 7 – 24

Milltronics MultiRanger Plus Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual