APG MPX Slave Sensor User Manual

AUTOMATION

Operator’s Manual

P R O D U C T S

GROUP, INC.

MPX

Series

Magnetostrictive Level Sensors

Doc 9003761

Rev. B 4/13

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Table of Contents

Warranty ........................................................................................ 3

How does it work?

Installaon

Wiring

...................................................................................... 5

.......................................................................................... 6-8

.......................................................................... 4

 HazardousLocaonWiring ......................................................... 8

Communicaons/Soware

........................................................ 9-15

 ConguringtheSoware...................................................... 10-11

 MulpleSensorCommunicaons ......................................... 12-13

 UsingtheProgrammingWindow ......................................... 14-15

Modbus Register Lists ........................................................... 16-17

SensorProgramming ............................................................... 18-34

 ApplicaonParameters ........................................................ 14-29

 SignalProcessingandControl(advancedonly) .................... 30-31

 4-20mASengs ....................................................................... 32

Web Alarms .......................................................................... 33-34

 SavingandRecallingSensorSengs ......................................... 35

InspeconandMaintenance ........................................................ 36

Specicaons

Dimensions

................................................................................ 37

.............................................................................. 38-39

CercateofCompliance ........................................................ 40-43

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

•Warranty and Warranty Restricons

APG warrants its products to be free from defects of material and
workmanship and will, without charge, replace or repair any equipment

found defecve upon inspecon at its factory, provided the equipment
has been returned, transportaon prepaid, within 24 months from date

of shipment from factory.

THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER
WARRANTIES NOT EXPRESSLY SET FORTH HEREIN, WHETHER EXPRESSED
OR IMPLIED BY OPERATION OF LAW OR OTHERWISE INCLUDING BUT
NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.

No representaon or warranty, express or implied, made by any sales
representave, distributor, or other agent or representave of APG
which is not specically set forth herein shall be binding upon APG.
APG shall not be liable for any incidental or consequenal damages,
losses or expenses directly or indirectly arising from the sale, handling,
improper applicaon or use of the goods or from any other cause
relang thereto and APG’s liability hereunder, in any case, is expressly
limited to the repair or replacement (at APG’s opon) of goods.

Warranty repairs are made specically at the factory. Any on site service
will be provided at the sole expense of the Purchaser at standard eld
service rates.

All associated equipment must be protected by properly rated

electronic/electrical protecon devices. APG shall not be liable for any
damage due to improper engineering or installaon by the purchaser
or third pares. Proper installaon, operaon and maintenance of the

product becomes the responsibility of the user upon receipt of the
product.

Returns and allowances must be authorized by APG in advance. APG
will assign a Return Material Authorizaon (RMA) number which must

appear on all related papers and the outside of the shipping carton. All

returns are subject to the nal review by APG. Returns are subject to
restocking charges as determined by APG’s “Credit Return Policy”.

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

• How does it work?

The MP series level sensors are based on magnetostricve technology.
Inside the stainless steel stem is a wire waveguide made of a metal that has
magnetostricve properes. Magnetostricve means that the atoms in
the metal realign in the presence of a magnec eld causing the metal to
temporarily deform or elongate very slightly. Inside the oat(s) are permanent
magnets. When a quick pulse of current is sent through the wire waveguide,
the magnec eld generated by the current pulse interacts with the magnec
eld of the oat(s) to realign the atoms in the waveguide. This results in a
rapid torsion that sends vibraons through the waveguide at near the speed
of sound. The sensor picks up the vibraon pulse, and through precisely
measuring the me elapsed between the current pulse and the torsion
vibraon, determines with precision the locaon of the oat. The MP has the
capability to simultaneously monitor two oats on a single stem, giving it the
ability to measure an oil/water interface level in addion to the total tank level.

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

• Installaon

The MPX should be installed in an area, indoors or outdoors, which meets the

following condions:

• The ambient temperature does not exceed -40oC to 85oC (-40oF to

+185oF)

• Relave humidity up to 100%

• Polluon Degree 2

• Measurement Category II

• Altude 2000 meters or less.

• Locate the Probe away from strong magnec elds, such as those pro­duced by motors, transformers, solenoid valves, etc.

• The medium is free from metallic substances and other foreign maer.

• No corrosive gases such as NH3, SO2, Cl2, etc.

• No excessive vibraon

• Ample space for maintenance and inspecon.

NOTE: Assure proper orientaon when installing the oat(s) on the stem
(refer to drawing below). Installing the oat(s) upsidedown can result in

unstable readings.

Taper Markings

XXXX

NC

UP

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5

Modbus Daisy-Chain Wiring

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

• Sensor Wiring

All MPX models will operate on 10-24 Vdc. Always use a high quality power
source that will deliver clean, stable voltage.

Modbus RS-485 Wiring (MPX-E1 and MPX-R1 models)

Always use shielded cable. APG recommends using twisted-pair cable for all

Modbus network wiring.

+12-24 Vdc

Power
Supply

Master
Device

GND

RS-485 A

RS-485 B

120 Ω
terminating
resistor

Use Shielded Cable

B

V+

Sensor 1

120 Ω
terminating
resistor at last

A

GND

V+

Sensor 2

B

A

GND

B

V+

Sensor 3

sensor

A

GND

MPX-E1 and MPX-R1 wiring terminal

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

4-20 mA Loop Wiring (MPX-E2, MPX-R2 and MPX-E3, MPX-R3 models)

4-20 mA Loop Wiring

(MPX-E2 and MPX-R2 Series)

+

−

Sensor

12-24 Vdc

Out

Dual 4-20 mA Loop Wiring

(MPX-E3 and MPX-R3 Series)

Sensor

12-24 Vdc

Out 1

Out 2

Power Source

(12-24 Vdc)

Receiver

Input Com

−

+

Power Source

(12-24 Vdc)

Receiver

Input 1 Input 2 Com

OR

−

+

Sensor

12-24 Vdc

Out 1

Out 2

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Receiver 1

Input Com

Power Source

(12-24 Vdc)

Receiver 2

Input Com

7

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Hazardous Locaon Wiring

C

0

Earth Ground

Connection

Hazardous Area

Non-Hazardous Area

Non-Incendive Wiring for Installation in

Class I Division 2 Groups C and D, Max. Tep. 85

C

0

Non-Hazardous Area

CSA/UL Listed Conduit

Certied Associated

Vmax = 28VDC,

Imax = 200ma,

Non-Incendive

Field Wiring Apparatus

Ci = 0nF, Li = 0

CSA/UL Listed Hazardous Location Cable

Vmax ≥ Voc,

Ca ≥ Ccable + Ci

La ≥ Lcable + Li

B

Hazardous Area

Earth Ground

A

Connection

A

Earth Ground

Connection

Install in accordance with Section 18 of the CEC or Article 500 of the NEC.

CSA listed or NRTL/UL listed conduit seal at location A & B.

Do NOT disconnect while circuit is live unless area is known to be non-hazardous

Installation in: Class I Division 1 & 2 Groups C and D, Max. Temp. 85

Ex d IIB : Ex nA IIB

Class I, Zone 1; AEx d IIB : Class I, Zone 2; AEx nA IIB

Tapering or replacement with non-factory components may adversely aect the safe use of the system.

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RST-4100

Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

• Sensor Communicaons

Modbus

(RS-485)

The MPX-E1 and MPX-R1 series ulizes standard Modbus RTU protocol (RS-

485). The sensor can only operate as a slave device. For more informaon
about Modbus RTU, please visit www.modbus.org.

The sensor will transmit at: 9600 baud, 8 bits, 1 Stop Bit, No parity (allow a
minimum delay of 300 ms between transacons).

4-20 mA (requires RST-4100 module)

MPX-E2, MPX-R2, MPX-E3, and MPX-R3 sensor versions require the RST-4100
module and the APG Modbus soware for programming.

A load resistance is required at the DC Common (GND) end of the current
loop in order to establish communicaons. The RST-4100 is wired in parallel

between the power source and the sensor, with the load resistance between

the “Out” leg connecon and the power source ground (as shown below).

To USB

Programming Module

(MPX-E2, MPX-R2, MPX-E3, and MPX-R3)

Wiring

RST-4100

Out 24V

Note: a minimum of
14 Vdc is required to

Sensor

12-24 Vdc

Out

Load Resistor

(100 Ω to 700 Ω)

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establish communications

+

Power Source

(14- 24 Vdc)

−

9

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Conguring Soware Communicaons

All MPX versions use the same APG Modbus soware for sensor programming.
Use the following steps to congure the soware communicaons.

Step 1: select “Communicaon” from the “Congure” menu.

Step 2: select the appropriate Sensor Type, as shown below, then click the

“Save Cong” buon at the boom of the screen.

Modbus: select “MP*-*1”

(MPX-E1 and MPX-R1)

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4-20 mA: select “MP*-*2”

(MPX-E2, MPX-R2, MPX-E3, MPX-R3)

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Step 3: select the mode of communicaon as shown below.

Modbus (RS-485):

(MPX-E1 and MPX-R1)

OR

Select the appropriate Comm Port
when using direct serial communica-

ons.

Check the “USB Communicaons
(RST-6001)” box when using the RST-

6001 communicaons module.

4-20 mA: check the box labeled “USB Communicaon (RST-4100)”

(MPX-E2, MPX-R2, MPX-E3, MPX-R3)

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Conguring Soware Communicaons for Mulple Sensors

Step 1: select the total number

of sensors you wish to read.

Step 2: change the “Sensor #”
boxes to match the address’ of

the target sensors.

Step 3: Change the Descripon labels as desired. The Descripon is
used to dierenate between sensors in other areas of the soware.

12

Step 4: Click “Save
Cong” then “Close”.

(connued)

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Step 5: Click on “Start”. The sensor readings should
populate as the soware cycles through each sensor.

START

Step 6: Click on a sensor descripon to access that sensor’s parameters.

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Using the Soware Programming Window

Click on the desired sensor descripon to
open that sensor’s programming window.

Sensor readings are displayed
in the Input Registers table.

14

The register values should automacally populate. If not, click
“Receive All” to retrieve the register values from the sensor.

(connued on next page)

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

To change an individual parameter, click on the value
you wish to change, enter the desired value, then click
the adjacent “Send” buon to implement the change.

To send all the register values as
currently listed, click “Send All”

To retrieve the register values saved
in a sensor, click “Receive All”

A red window indi-

A green window

indicates successful

communicaon.

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Send

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A yellow window

indicates a communi-

caon failure.

1500

Send

cates a value outside

the allowable limits

for the parameter.

150000

Send

15

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Modbus Register Lists

Input Registers (0x04):

Register Returned Data

30300 Raw Top Float Reading (in mm, unsigned)

30301 Raw Boom Float Reading (in mm, unsigned)

30302 Temperature Reading (in 0C, signed)

30303-30304 Calculated Top Float Reading (in selected Units)

30305-30306 Calculated Boom Float Reading (in selected Units)

NOTE: the Calculated Readings will be returned without a decimal place. In
order to aain the true result, the Decimal Place seng must be taken into
account. Refer to the Decimal Place seng on page 19 for more informaon.

Holding Registers (0x03):

Register Funcon Value Range

40400 Device Address 1 to 255

40401 Units 1 to 3

40402 Applicaon Type 0-10

40403 Volume Units 0 to 6

40404 Decimal Place 0 to 10364 mm

40405 Max Distance 0 to 10364 mm

40406 Full Distance 0 to 10364 mm

40407 Empty Distance 0 to 10364 mm

40408 Sensivity 0 to 100

40409 Pulses 0 to 20

40410 Blanking 0 to 10364 mm

40411 Reserved n/a

40412 Averaging 0 to 100

40413 Filter Window 0 to 10364 mm

40414 Out of Range Samples 0 to 255

16

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

(connued)

Register Funcon Value Range

40415 Sample Rate 50 to 1000 msec.

40416 Mulplier 1 to 1999

40417 Oset +/- 10364 mm

40418-40420 Reserved n/a

40421 RTD Oset (0C) -100 to 100

40422 Float Window 0 to 1000 mm

40423 Top Float Oset -10364 to 10364

40424 Boom Float Oset -10364 to 10364

40425 Gain Oset 0 to 255

40426 4 mA Set Point 0 to 10364 mm

40427 20 mA Set Point 0 to 10364 mm

40428 4 mA Calibraon 0 to 1000

40429 20 mA Calibraon 0 to 1000

40430 Web Alarm 1 Distance

40431 Web Alarm 1 Window

40432 Web Alarm 1 Type

40433 Web Alarm 2 Distance

40434 Web Alarm 2 Window

40435 Web Alarm 2 Type

40436-40437 Parameter 1 Data 0 to 100,000 mm

40438-40439 Parameter 2 Data 0 to 100,000 mm

40440-40441 Parameter 3 Data 0 to 100,000 mm

40442-40443 Parameter 4 Data 0 to 100,000 mm

40444-40445 Parameter 5 Data 0 to 100,000 mm

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Applicaon Parameters

Device Address (1 to 255) (40400)

Each device within the Modbus network must be assigned a unique address.
Each MPX sensor should be connected to the network individually and assigned

an address. Each sensor is set to address 1 by default.

Units (1 = Feet, 2 = Inches, 3 = Meters) (40401)

Determines the units of measure for the calculated reading (Input registers

30303-30304 and 30305-30306) when in Applicaon Types 0, 1, 7, or 11 (Dis­tance, Depth of level, Pounds, Curve Fit).

Applicaon Type (1 to 11) (40402)

Determines the type of calculated reading performed by the sensor (refer to

pages 10-18). The calculated readings can be queried from Input registers
30303-30304 (top oat) and 30305-30306 (boom oat).

Applicaon Type 0: Distance

Sets the zero reference at the top of the stem and measures downward to

the oat posion.

Register Funcon Value Range

40401 Units 1 to 3
40402 Applicaon Type 0
40404 Decimal Place 0 to 3

Applicaon Type 1: Depth of level

Sets the zero reference to the boom of the stem and measures upward to
the oat posion.

Register Funcon Value Range

40401 Units 1 to 3
40402 Applicaon Type 1
40404 Decimal Place 0 to 3
40406 Full Distance Typically = Blanking Distance
40407 Empty Distance 0 to 10364 mm

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Applicaon Type 2: Volume of cylindrical tank with/without hemispheri­cal boom

Register Funcon Value Range

40402 Applicaon Type 2

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank Diameter 0 to 100,000 mm

40438-40439 Boom Radius 0 to 100,000 mm

Diameter

Full
Distance

Empty
Distance

or

Boom

Radius

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Applicaon Type 3: Volume of cylindrical tank with conical boom

Register Funcon Value Range

40402 Applicaon Type 3

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank Diameter 0 to 100,000 mm

40438-40439 Cone Diameter 0 to 100,000 mm

40440-40441 Cone Length 0 to 100,000 mm

Diameter

Full
Distance

20

Empty
Distance

Cone
Length

Cone
Diameter

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Applicaon Type 4: Volume of rectangular tank with/without chute bot-

tom

Register Funcon Value Range

40402 Applicaon Type 4

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank X 0 to 100,000 mm

40438-40439 Tank Y 0 to 100,000 mm

40440-40441 Chute X 0 to 100,000 mm

40442-40443 Chute Y 0 to 100,000 mm

40444-40445 Chute Length 0 to 100,000 mm

Full
Distance

Empty
Distance

Tank X

Tank Y

or

Chute
Length

Chute Y

Chute X

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Distance

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Applicaon Type 5: Volume of horizontal cylindrical tank with or without

hemispherical ends

Register Funcon Value Range

40402 Applicaon Type 5

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank Length 0 to 100,000 mm

40438-40439 Tank Diameter 0 to 100,000 mm

40440-40441 End Radius 0 to 100,000 mm

Full
Distance

22

Diameter

End
Radius

Length

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Empty

Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Applicaon Type 6: Volume of spherical tank

Register Funcon Value Range

40402 Applicaon Type 6

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank Diameter 0 to 100,000 mm

Full
Distance

Empty
Distance

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Diameter

23

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Applicaon Type 7: Pounds

Allows the user to apply a conversion mulplier to the calculated level reading.

NOTE: the decimal point for the mulplier (40436-40437) is always assumed
to be in the thousands posion, therefore a seng of 206250 = 206.250
actual mulplier.

Example: suppose the product in a tank weighs 206.25 pounds for every inch
of level. With the Units set to inches (Units = 2), enter a mulplier of 206250

into Holding registers 40436-40437.

Register Funcon Value Range

40401 Units 1 to 3

40402 Applicaon Type 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking Distance

40407 Empty Distance 0 to 10364 mm

40436-40437 Mulplier 0 to 1000000 (1000 = 1.000)

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Applicaon Type 9: Volume of vercal oval tank

Register Funcon Value Range

40402 Applicaon Type 9

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank Length 0 to 100,000 mm

40438-40439 Tank Depth 0 to 100,000 mm

40440-40441 Tank Width 0 to 100,000 mm

Full
Distance

Empty
Distance

Width

Depth

Length

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Applicaon Type 10: Volume of horizontal oval tank

Register Funcon Value Range

40402 Applicaon Type 10

40403 Volume Units 1 to 7

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Tank Length 0 to 100,000 mm

40438-40439 Tank Depth 0 to 100,000 mm

40440-40441 Tank Width 0 to 100,000 mm

Full
Distance

26

Empty
Distance

Depth

Length

Width

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Applicaon Type 11: Curve Fit

Allows the sensor to mimic a tank strapping chart by using a 3rd degree polyno­mial equaon to produce a “curve t” approximaon.

Register Funcon Value Range

40401 Units 1 to 3

40402 Applicaon Type 11

40404 Decimal Place 0 to 3

40406 Full Distance Typically = Blanking

40407 Empty Distance 0 to 10364 mm

40436-40437 Parameter 1 0 to 100,000 mm

40438-40439 Parameter 2 0 to 100,000 mm

40440-40441 Parameter 3 0 to 100,000 mm

40442-40443 Parameter 4 0 to 100,000 mm

Open the APG Modbus soware and select “Strapping Chart” from the “Tools”

menu.

Enter the desired data points
into the table.

OR

Use the “Load” buon to re­call a previously saved table.

OR

Import data from an electronic
document by copying the data

and then using the “Paste”
buon to populate the table.

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27

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Once the all data points have been entered, click the “Calculate” buon to
determine the values required for the “curve t” calculaon.

NOTE: before clicking “Calculate” ensure that

there is only one empty row following the last

line of data (as shown). Use the keyboard
“Delete”key to remove any addion empty rows.

Click the “Save to Sensor” buon to populate the appropriate Holding Resister
elds (see below) and close the Strapping Chart window.

Click the “Send All” buon at the boom of the Holding Register page to write
the curve t values to the sensor.

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Volume Units (1 to 7) (40403)

Determine the units of measure for all volumetric Applicaon Types.

1 = Cubic Feet 4 = Cubic Meter 7 = Barrels
2 = Million Cubic Feet 5 = Liters
3 = Gallons 6 = Cubic Inches

Decimal Place (0 to 3) (40404)

Set the number of digits aer the decimal place to be included in the calculated
reading (Input registers 30303-30304 and 30305-30306)

Example: a measurement of 1126.658 will be returned as follows:
Decimal Place = 0 Volume = 1127
Decimal Place = 1 Volume = 11267
Decimal Place = 2 Volume = 112666
Decimal Place = 3 Volume = 1126658

*Maximum Distance (0 to 10364 mm) (40405)

Sets the distance, beginning from the zero reference, to where the sensor will

stop looking for a oat signal (usually the boom of the stem).

*Full Distance (0 to 10364 mm) (40406)

Sets the distance, beginning from the zero reference, to the point where the

tank is considered full (usually set to match the Blanking--see next page).

*Empty Distance (0 to 10364 mm) (40407)

Sets the distance, beginning from the zero reference, to the boom of the stem
OR the boom of the tank, whichever is considered the empty level.

Parameter Data (0 to 100,000 mm) (40436 to 40445)

The Parameter Data registers are used to enter tank dimensions or conversion
mulpliers for all the volumetric Applicaon Types (types 2-11). Refer to the
individual Applicaon Types for more informaon.

*refer to drawing on next page for more informaon

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Full Distance

Increase the factory set Empty Distance

by “X” in millimeters (as shown below).

Empty

Distance

Maximum

Distance

Example for X = 25 mm (1”)

Factory sengs:

Maximum distance = 1500 mm (to end of stem)
Empty Distance = 1500 mm (to end of stem)

Adjusted Sengs:

Max Distance = 1500 mm
Empty Distance = 1525 mm

X (in mm)

30

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

• Signal Processing and Control (advanced users only)

The parameters in this secon (pages 24-25) are advanced factory sengs and

should not normally need adjustment.

Sensivity (0 to 100%) (40408)

Controls the level of amplicaon applied to the oat signal. The sensivity set­ng is expressed as a percentage; 0 to 100%.

Pulses (0 to 20) (40409)

Controls the strength of the drive signal being sent down the magnetostricve
wire inside the stem. The greater the number of pulses, the stronger the drive

signal.

Blanking (0 to 10364 mm) (40410)

Sets the distance, beginning at the coil inside the upper stem, downward to the

point where the sensor will begin looking for the oat signal. If the oat enters
the blanking area it will not be detected. The blanking should never be set to
less than the top dead-band of the sensor.

Averaging (1 to 20) (40412)

Denes the number of oat readings that will be averaged together to become
the calculated reading. Each qualied oat reading (see Filter Window and
Out of Range Samples below) is placed into a rst-in, rst-out (FIFO) buer
and averaged with previous samples to generate a steady output. A higher
Averaging seng will result in smoother readings, but will also result in slower
response me to rapid level changes.

Filter Window (0 to 10364 mm) (40413)

Sets the width of the oat acceptance window. The oat acceptance window
is a zone, centered at the oat, within which any reading detected will be
considered legimate and gured into the averaging buer. Any reading
detected outside of the Window will be considered “out of range” and will
be ignored based on the seng in the Out of Range Samples parameter
(see below). The Filter Window extends both direcons from the oat. For
example, if the oat sits at 5 . and the Filter Window is set at 1 ., then any
reading detected between 4 . and 6 . will be accepted.

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MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Out of Range Samples (1 to 255) (40414)

Determines the number of consecuve level readings that fall outside of the
acceptance window before the “out of range” target is recognized as being
legimate and gured into the averaging buer. Out of Range readings
detected fewer mes than the Out of Range Samples seng will be rejected.

Sample Rate (50 to 1000 msec) (40415)

Sets the interval between oat readings. Opons allow rates from 50 to
1000 msec. A higher Sample Rate will result in a more rapid response to level
changes. Lowering the Sample Rate will help decrease the chance of detecng

errant readings. It is highly recommended that the Sample Rate be set only as

fast as is necessary for the applicaon. A sample rate of 500 to 1000 msec. is
usually appropriate for slow moving level sensing applicaons.

Mulplier (0 to 19999) (40416)

Sets the calibraon mulplier that will be applied to the sensor readings.

Oset (-10364 to 10364 mm) (40417)

Used to adjust the zero reference point of the sensor.

RTD Oset (-100 to 100 mm) (40421)

Used to calibrate the internal temperature sensor located at the boom of the
stem (MPX-E1 and MPX-R1 only).

Float Window (0 to 1000 mm; 0 = single oat) (40422)

Sets the distance from top oat to the point where the sensor will start looking
for a second oat. If the Float Window is set too small, the trailing end of
the top oat signal will be picked up as the boom oat level, causing errant

readings.

NOTE: the Float Window should always be set to 0 when using only 1 oat.

1st and 2nd Float Oset (-10364 to 10364 mm) (40423 to 40424)

Used to calibrate the top and boom oat readings.

Gain Oset (0 to 255) (40425)

Factory set--do not adjust. Default = 128.

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

• 4-20 mA Sengs

MPX-E2, MPX-R2 and MPX-E3, MPX-R3 models only.

*4 mA Set-point (0 to 10364) (40426)

Sets the measurement value associated with a 4 mA signal. The set-point is
based on raw measurement value of register 30300 (in millimeters), and not
the calculated value of register 30303.

*20 mA Set-point (0 to 10364) (40427)

Sets the measurement value associated with a 20 mA signal. The set-point is
based on raw measurement value of register 30300 (in millimeters), and not
the calculated value of register 30303.

*4 mA Calibraon (0 to 1000) (40428)

Factory set--do not adjust.

*20 mA Calibraon (0 to 1000) (40429)

Factory set--do not adjust.

20 mA

Set-Point

4 mA

Set-Point

OR

4 mA

Set-Point

20 mA

Set-Point

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33

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

•Web Alarming (40430 to 40435)

When the MP is interfaced with an LOE or RST-5002 web-enabled master
device, the MP can be congured to generate website alarms via levelandow.
com. Refer to the LOE or RST-5002 user manual for more informaon about
website alarms and using levelandow.com.

Trip Alarm 1 (40430) or Alarm 2 (40433) Distance

Sets the level (in mm), beginning the boom of the stem, to the rst (lowest)
actuaon point (refer to next page for more informaon).

Trip Alarm 1 Window (40431 or 40434)

Sets the level (in mm), beginning from the Trip Distance locaon, to the sec­ondary actuaon point (refer to next page for more informaon).

Trip Alarm 1 Type (40432 or 40435)

Determines the operaonal logic performed by the Trip Alarm (refer to next
page for more informaon).

Conguring Trip Alarm Types for Website Alarming:

(refer to Trip Types on next page)

Placing a “1” in front of any of the Trip Types designates an acve trip point as
an alarm condion. For example; Trip Type 3 would be designated as 13, and
would iniate a website alarm whenever the trip is acve (on).

Placing a “2” in front of any of the Trip Types designates an inacve trip point as
an alarm condion. For Example; Trip Type 3 would be designated as 23, and
would iniate a website alarm whenever the trip is inacve (o).

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Trip Type Explanaons

Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Trip Type 0
(near)

Trip Type 1

(exclusive)

Trip Type 2
(hysteresis near)

Trip Type 3
(far)

Trip Type 4

(inclusive)

Trip Type 5
(hysteresis far)

Type 6: n/a

Trip

Distance

ON OFF OFF

ON

ON

OFF

OFF

OFF

Trip
Window

OFF

ON

(Raising Level)

OFF

(Falling Level)

ON

ON

ON

(Falling Level)

OFF

(Raising Level)

ON

OFF

ON

OFF

ON

Type 7 (Loss of Echo): the relay will acvate if the sensor enters a loss of echo condion (no

targets detected).

Type 8 n/a

Type 9 (Rate of Change): allows the user to dene a maximum rate of change (distance over

me), which if exceeded will acvate an alarm. The Trip Distance parameter is used to dene the

me value, and the Trip Window parameter is used to dene the distance value.

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35

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Saving Sensor Parameter Conguraons

Click on “File”, then select
“Save Mode Values”.

Choose a le name and the locaon
where you wish to save the le, then
click “Save”

Recalling Saved Sensor Conguraons

Click on “File”, then se­lect “Load Mode Values”.

Choose a le you wish to upload, then
click “Open”. This will load the parameter
values into the soware.

Ensure the device address seng matches the target sensor’s address, then
click the “Send All” to write the parameters values to the sensor.

Send ALL

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

• Inspecon and Maintenance

Periodically inspect the MPX unit to ensure that the stem is free of any heavy
buildup that might impede the movement of the oat. If sediment or other
foreign maer becomes trapped between the stem and the oat, detecon

errors can occur.

Ensure that the housing cover is snuggly secured. If the cover becomes

damaged or is misplaced, order a replacement immediately.

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37

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

• Specicaons

Electrical Connecon: terminal block

Supply Voltage: 12 to 24 VDC

Current Draw

Modbus: 28 mA

4-20 mA: 22 mA (single), 44 mA (dual)

Output

MPX-x1: modbus (RS-485)

MPX-x2: 4-20 mA loop (2 wire)

MPX-x3: dual 4-20 mA loop (3 wire)

Resoluon

Modbus: 1 mm

4-20 mA: 14 bit

Accuracy: 0.05% of full scale reading

Top Dead-Band

MPX-E: 6 inches (150 mm)

MPX-R: 10 in (254 mm)

Temperature Sensor (modbus versions only): 1K RTD (+/- 1%)

Housing: cast aluminium, epoxy spray coated

Stem Material: 304 SS or 316L SS (MPX-R available in 316L SS only)

Environmental Protecon: NEMA 4X, IP65

Operang Temperature: -40 to 185 °F (-40 to 85°C)

Hazardous Locaon Approvals:

Class I Division 1 Groups C & D T4 (Ta 85°C)

Class I Division 2 Groups C & D T4 (Ta 85°C)

Class I, Zone 1; AEx d IIB T4

Class I, Zone 2; AEx nA IIB T4

Ex d IIB T4

Ex nA IIB T4

Specicaons are subject to change without noce.

For technical assistance, please contact APG at 435-753-7300.

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

• MPX-R Dimensions

5.72”

4.30”

3/4” NPT

5.00”

10”

Dead-Band

(from reference)

6”

Dead-Band

(from reference)

7.00”

5.00”

5.50”

U & V

3.03”

W & X

Float Opons

Ref.

Ref.

2.80”

5.50”

Ø 0.25”

S & T

Ref.

3.07”

Y & Z

Ref.

5.10”

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3.08”

39

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

• MPX-E Dimensions

5.72”

4.30”

3/4” NPT

5.00”

6”

Dead-Band

(from reference)

1.5”

Dead-Band

(from reference)

7.00”

2.00”

1.87”

A & B

2.06”

E

Float Opons

1.38”

Ref.

Ref.

2.20”

Ø 0.25”

C & D

Ref.

1.63”

F

Ref.

40

1.78”

1.47”

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Model Number Configuraon

Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

MPX –

– – –

C D

E FA B

A Stem Type

E 0.5 in. diameter
R 1 in. diameter

B Output

1 Modbus RTU
2 4-20 mA (loop powered, 2-wire)
3 Dual 4-20mA (loop powered, 3-wire)

C Float 1

MPX-E (0.5 in. stem)
A 316L SS Round (0.65 SG)
B 316L SS Round (0.92 SG)
C 316L SS Cylindrical (0.61 SG)
D 316L SS Cylindrical(0.92 SG)
E Buna-N Cylindrical (0.65 SG)
F 316L SS Oval (0.5 SG)

MPX-R (1 in. stem)
S 316L SS Round 3 in. (0.94 SG)
T 316L SS Round 3 in. (0.58 SG)
U 316L SS Oval (94 SG)
V 316L SS Oval (0.63 SG)
W 316L SS Round (0.92 SG)
X 316L SS Round (0.52 SG)
Y Blue Polyurethane (0.94 SG)
Z Red Polyurethane (0.65 SG)

H

G

D Float 2 (oponal)

Refer to float opons in secons C

N None

E Mounng Opons (include size)

F FF Flange, 150# ANSI (size: 2, 2.5, 3, 4, 5, 6 in.)
R RF Flange, 150# ANSI (size: 2, 2.5, 3, 4, 5, 6 in.)
S Tri-Clamp (size: 2, 2.5, 3, 4 in.)
P NPT Plug (size: 1.5, 2, 2.5, 3, 4 in.)

N None
O Other

F Mounng Type

W Welded (fixed)

S Slide (adjustable)

G Stem Material

A 304 SS
B 316L SS*

*MPX-R is available in 316L SS only

H Total Stem Length (in inches)

MPX-E: min. 12 in. - max. 153 in.
MPX-R: min. 24 in. - max. 300 in.

Example: MPX-E1-AN-P2.5WB-60

A B C D E F

Accessories

Programming Modules Part Number
RST-6001 (Modbus models; MPX-x1) 125734
RST-4100 (4-20 mA models; MPX-x2, MPX-x3) 125759

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G

H

41

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Certificate of Compliance

Certificate:

Project:

Issued to: Automation Products Group Inc

2397437

2397437

1025 West 1700 North
Logan, UT 84321
USA
Attention: Karl Reid

The products listed below are eligible to bear the CSA

Mark shown with adjacent indicators 'C' and 'US' for

Canada and US or with adjacent indicator 'US' for

US only or without either indicator for Canada only.

Issued by:

Master Contract:

Date Issued:

Dennis Jerey

Dennis Jerey

237484

May 18, 2011

PRODUCTS
CLASS 2258 02
CLASS 2258 82

Class I, Division 1 & 2, Groups C, and D

Ex d IIB

Ex nA IIB

Class I, Zone 1; AEx d IIB

Class I, Zone 2; AEx nA IIB

Float Level Sensors, model MPX-ab-cd-efg-hhh, rated 12 - 24 Vdc, 80mA, or rated 12 to 24 Vdc, 4-20mA;
operating ambient Ta is 85°C; Temperature Code T4; Ingress protection IP65; Field wiring is non-incendive
when installed per drawing 9003468.

DQD 507 Rev. 2009-09-01 Page: 1

- PROCESS CONTROL EQUIPMENT - For Hazardous Locations

- PROCESS CONTROL EQUIPMENT - For Hazardous Locations ­Certied to US Standards

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42

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Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Certificate:

Project:

Notes:

• The model code breakdown is as follows: a= E or R; b= 1, 2 or 3; c= A, B, C, D, E, F, Z, or Y; d= N, B, D, or
Y; e= F, R, P, N, or O; f= W or S; g= A or B; and hhh= 12–153 for the 1/2" stem or 48–300 for the 1" stem.

• The equipment is intended to be installed as required by the applicable electrical code (CEC, NEC) and as
specied by the manufacturers Installation Instructions.

• The installation will be inspected by the authority with jurisdiction in the area where installed.

APPLICABLE REQUIREMENTS

CSA C22.2 No 0-10 General Requirements – Canadian Electrical Code, Part

CSA C22.2 No 30-M1986 (R 2007) Explosion-Proof Enclosures for Use in Class I

CSA C22.2 No 142-M1987 (R 2009) Process Control Equipment Industrial Products – Third

CSA C22.2 No 213-M1987 (R 2008) Non-incendive Electrical Equipment for Use in Class I,

CSA C22.2 No 60079-0-07 Electrical apparatus for explosive gas atmospheres –

CSA C22.2 No 60079-1-07 Electrical apparatus for explosive gas atmospheres –

CSA E60079-15-02 (R 2006) Electrical Apparatus for Explosive Gas Atmospheres –

UL 508 Industrial Control Equipment - Seventeenth Edition;

UL 1203 Explosion-Proof and Dust-Ignition-Proof Electrical

ANSI/ISA-12.12.01-2007 Nonincendive Electrical Equipment for Use in Class

MARKINGS

The following markings are provided on a UL Recognized (PGJI2) adhesive nameplate manufactured by
Datamax, type FantaStock-HCW, printed with a resin ribbon manufactured by Datamax, type Greatribbon
SDR or SDR-5, which is suitable for indoor/outdoor use on polyurethane paint coatings, at a maximum service
temperature of 135°C or higher. Alternatively a screw or rivet secured metal nameplate or other permanent

2397437

2397437

II – Tenth Edition

Hazardous Locations Industrial Products – Third
Edition

Edition

Division 2 Hazardous Locations Industrial Products –
First Edition

Part 0: General requirements – First Edition

Part 1: Flameproof enclosures "d" – First Edition

Part 15: Type of Protection "n" – Second Edition

Reprint with Revisions Through and Including April
15, 2010

Equipment for Use in Hazardous (Classied) Locations

- Fourth Edition; Reprint with Revisions through and
Including October 28, 2009

I and II, Division 2 and Class III, Divisions 1 and 2
Hazardous (Classied) Locations

Master Contract:

Date Issued:

237484

May 18, 2011

DQD 507 Rev. 2009-09-01 Page: 2

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43

MPX Series Magnetostrictive Level Sensors Rev. B, 4/13

Certificate:

Project:

manner can be used. The nameplate is axed to the top of the enclosure. Labels, if shown in the report, may
vary slightly in layout, provided that the required information continues to be shown.

The following markings appear on each product where applicable:

• Manufacturer’s name: "Automation Products Group", or CSA Master Contract Number “237484”, adjacent to

the CSA Mark in lieu of manufacturer’s name.

• Model number: As specied in the PRODUCTS section, above.

• Electrical ratings: As specied in the PRODUCTS section, above.

• Ambient temperature rating: As specied in the PRODUCTS section, above.

• Manufacturing date in MMYY format, or serial number, traceable to month of manufacture.

• Enclosure ratings: As specied in the PRODUCTS section, above.

• The CSA Mark with or without “C” and “US” indicators, as shown on the Certicate of Conformity.

• Hazardous Location designation: As specied in the PRODUCTS section, above (may be abbreviated).

• Temperature code: As specied in the PRODUCTS section, above.

• The name or mark of the certicate issuer and the certicate reference in the following form: the last two

gures of the year of the certicate followed by the serial number of the certicate in that year.

• The following words:

• “OPEN CIRCUIT BEFORE REMOVING COVER” or "KEEP COVER TIGHT WHILE CIRCUITS ARE

• “WARNING – EXPLOSION HAZARD - Substitution of components may impair suitability for Class I,

• “WARNING – EXPLOSION HAZARD – Do not connect while circuit is live unless area is known to be

• “Install per drawing 9003468 (as appropriate for nonincendive eld wiring only).”

An installation manual or data sheet shall be supplied with each unit, containing the following minimum
marking information:

General: Technical specications, instructions for use and details of where technical assistance may be obtained
if required.

Equipment Ratings: This includes equipment supply, description of I/O connections, duty cycle and operating
environmental conditions.

• Pollution degree 2;

• Measurement category II;

• Altitude 2000 m;

• Humidity 0 to 100%;

• Electrical supply DC,

• Indoor and outdoor use statement;

• Temperature - 40°C to 85°C;

Equipment Installation: This includes instructions for assembly and mounting, location requirements, details for
special services (cooling supply, etc.) as applicable.

2397437

2397437

ALIVE”.

Division 2.”

nonhazardous.”

Master Contract:

Date Issued:

237484

May 18, 2011

DQD 507 Rev. 2009-09-01 Page: 3

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

44

Tel: [phone] • Fax: [phone] • www.apgsensors.com • [e-mail]

Rev. B, 4/13 MPX Series Magnetostrictive Level Sensors

Certificate:

Project:

PERMANENTLY CONNECTED EQUIPMENT requires the special considerations to satisfy the CEC and the
Canadian deviations in the standard, including overcurrent and fault protection as required.

Equipment Operation: This includes explanations of operating controls and warning symbols used, and
instructions for interconnection, replacement of consumables (e.g. paper) and cleaning as required.

Equipment Maintenance: This includes instructions for preventative maintenance, inspection and cleaning,
replacement of parts, etc.

Note - Jurisdictions in Canada may require these markings to also be provided in French language. It is the
responsibility of the manufacturer to provide bilingual marking, where applicable, in accordance with the
requirements of the Provincial Regulatory Authorities. It is the responsibility of the manufacturer to determine
this requirement and have bilingual wording added to the "Markings".

2397437

2397437

Master Contract:

Date Issued:

237484

May 18, 2011

DQD 507 Rev. 2009-09-01 Page: 4

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www.apgsensors.com • [e-mail]

45

MPX Magnetostrictive Level Sensors Rev. B, 4/13

Notes

46

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www.apgsensors.com • [e-mail]

Rev. B, 4/13 MPX Magnetostrictive Level Sensors

Notes

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www.apgsensors.com • [e-mail]

47

AUTOMATION

P R O D U C T S

GROUP, INC.

APG...Providing tailored solutions
for measurement applications

Automation Products Group, Inc.

Tel: [phone]

1/435/753-7300
Fax: [phone]

e-mail: [e-mail]

www.apgsensors.com

Automation Products Group, Inc.

1025 W. 1700 N.

Logan, UT 84321