Page 1
MPXI Magnetostrictive Level Sensors User Manual For the Series MPXI-F Explosion Proof, Flexible, Stainless Steel and PVDF Stems Doc #9006317 Part #200749 Rev A, 03/2021...
Chapter 3: Programming ..................16 Modbus Programming ........................16 Modbus Programming with RST-6001 and APG Modbus Software ........16 4-20 mA Programming with RST-4100 and APG Modbus Software ........17 Modbus Register Lists for MPXI-F8..................17-18 MPXI-F8 Modbus Sensor Parameters ..................19-23 Modbus Register Lists for MPXI-F6 and MPXI-F7 ............
Introduction Thank you for purchasing an MPXI-F series magnetostrictive level sensor from APG. We appreciate your business and your trust. Please take a few minutes to familiarize yourself with your MPXI-F and this manual. MPXI-F Series Explosion Proof, Flexible Stainless Steel and PVDF Stem Magnetostrictive Probe Level Sensors’...
Warranty and Warranty Restrictions This product is covered by APG’s warranty to be free from defects in material and workmanship under normal use and service of the product for 24 months. For a full explanation of our Warranty, please visit https://www.apgsensors.com/about-us/terms-conditions.
Chapter 1: Specifications and Options • Dimensions MPXI-F/B (SS Stem) Sensor Dimensions with 2”Ø Stem Weights MPXI-F/B Float Options U & V / I & J S & T I & J U & V 2.80” 4.98” 5.88” 3.07” U & V 3.03”...
Page 6
MPXI-F/B (SS Stem) Sensor Dimensions with 3”Ø Stem Weights MPXI-F/B Float Options U & V / I & J S & T I & J U & V 2.80” 4.98” 5.88” 3.07” U & V 3.03” Y & Z / L & M I &...
Page 7
MPXI-F/K (PVDF Stem) Sensor Dimensions MPXI-F/K Float Options I & J H & K 4.98” 3.50” 2.00” 3.00” S1 Top Number & Total Probe Length Deadband Height of Stem in Inches Length† Weights L ≤ 144” 6” 5” 145” ≤ L ≤ 300” 8”...
• Specifications Performance Resolution 4-20 mA: 14 bit DAC (1 mm) Modbus: 0.04 in. (1 mm) Accuracy 4-20 mA: Greater of ±0.05% of FS or 1 mm Modbus: ±0.04 in. (±1 mm) Digital Temp Sensor Accuracy: ±1°C API 18.2 Temp Sensor Accuracy: ±0.25°C over -40°...
• Model Number Configurators Model Number: MPXI - _F_ _____ _____ - _____ _____ - _____ _____ _____ _B_ - _____ - _____ - _N_ _2_ _____ _____ I. Stem Material A. Stem Type □ □ 316L SS Flexible Tubing J.
Page 11
Model Number: MPXI - _F_ _____ _____ - _____ _____ - _____ _____ _____ _K_ - _____ - _____ - _N_ _2_ _____ _____ - _____ I. Stem Material A. Stem Type □ □ Proprietary PVDF formulation Flexible Tubing J. Total Stem Length in Inches B.
Supply Use Shielded Cable RST-6001 Modbus Controller Equivalent 120 Ω USB to computer terminating resistor with APG Modbus internal to RST-6001 software Note: An independent +12-24 Vdc MPXI-F Modbus MPXI-F Modbus MPXI-F Modbus power supply is required when series sensor...
Page 13
ONLY. After programming, sensor must be reintegrated to 4-20 mA loop for proper system operation. Programming Module RST-4100 and APG Modbus software required for programming MPXI-F6 and MPXI-F7 series sensors. Note: 24 VDC is Out 24V MPXI-F6 or...
Chapter 2: Installation and Removal Procedures and Notes • Tools Needed You will need the following tools to install your MPXI-F level sensor: • Wrench sized appropriately for MPXI-F mounting • Wrench sized appropriately for conduit connections • Flat-head screwdriver for wire terminals •...
• Physical Installation Notes The MPXI-F should be installed in an area--indoors or outdoors--which meets the following conditions: • Ambient temperature between -40°C and 85°C (-40°F to +185°F) • Relative humidity up to 100% • Altitude up to 2000 meters (6560 feet) •...
• PVDF Installation Temperature Requirements Prior to installing a PVDF-stem MPXI-F, the interior, mid-column temperature of the tank must be meas- ured to determine the amount clearance needed at the bottom of the probe for thermal expansion. See Figure 2.1 1.
• Physical Installation Instructions Ensure that all components have been received, including: • MPXI-F sensor (head and stem) • Float (or floats, if two floats purchased) • Optional Slide Mount • Stem Weight; Weight-Locking Pin and Set Screw for SS, Dowel Pin for PVDF •...
Taper IMPORTANT: Floats must be oriented properly on the stem, or sensor readings will be inaccurate and unreliable. Untapered floats will have a sticker or etching indicating the top of the float. Remove sticker prior to use. Figure 2.2 NOTE: Damage due to floats dropped on stem may not be be covered by warranty.
• Removal Instructions Removing your MPXI-F level sensor from service should be done with care. • Ensure that all circuits are turned off and hazardous atmosphere around sensor head has been cleared. • Remove housing cover and disconnect wires. Replace housing cover. •...
An APG RST-6001 Modbus Controller can be used in tandem with APG Modbus software to program and control up to 20 MPXI-F8 series sensors. Through APG Modbus, you can monitor the raw readings from the sensor, configure the data for distance, level, volume, or weight, and enter measurements for a strapping chart.
An APG RST-4100 Programming Module can be used in tandem with APG Modbus software to program a single MPXI-F6/7 series sensor. Through APG Modbus, you can configure the 4 mA and 20 mA output setpoints and calibration settings. If your monitoring equipment (PLC, etc.) can be configured to interpret the 4-20 mA output(s) of the MPXI-F as volume, then the MPXI-F can be configured accordingly via APG Modbus.
Page 22
0, 1, 2, 3, 4 40201 Restore to Factory Defaults *These registers are not used by the MPXI-F8, even though they are labeled in the APG Modbus software. †Setting is factory calibrated. Do not adjust. Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • sales@apgsensors.com...
• MPXI-F8 Modbus Sensor Parameters 40401 - Units Determines the units of measure for the Calculated Reading when Application Type is set to 0, 1, or 7. 1 = Feet 2 = Inches 3 = Meters 40402 - Application Type Determines the type of Calculated Reading performed by the sensor.
Page 24
40405 - Maximum Distance (Factory Calibrated) Sets the distance (beginning from the Zero Reference) to the point where the sensor will stop looking for float signals, usually the bottom of the stem. A float beyond the Maximum Distance value will not be detect- 40406 - Full Distance Sets the positive distance (beginning from the sensor Zero Reference) to the point where the monitored vessel is considered full.
Page 25
40413 - Filter Window (Factory Calibrated) Determines the physical range (0 - 10,364 mm) of qualified received signals, based on the current raw reading. Signals beyond the +/- Filter Window range of the current reading will not qualify unless the average moves.
Page 26
40417 - Offset (Factory Calibrated) Sets the Zero Reference of the sensor, the point from which the calculated distance is measured. 40418 - Pre filter Defines the physical range (0 - 10,364 mm) of the start up (pre-filter) window. Four sample readings must be found within the Pre filter window for the MPXI-F sensor to successfully start up.
Page 27
40446 - Baud Rate Selects the communication speed between the sensor and the Server Device. All devices on the network must use the same Baud Rate. APG Modbus Server and Client devices default to 9600 Baud. 0 = 9600 1 = 19200...
• APG Modbus Register Lists for MPXI-F6 and MPXI-F7 Input Registers (0x04) Register Returned Data 30299 Model Type 30300 Raw Top Float Reading (in mm, unsigned) 30301 Raw Bottom Float Reading (in mm, unsigned) 30302 Version 30303-30304 Calculated Top Float Reading (in selected Units)
Page 29
40444-40445 Parameter 5 Data 0 to 1,000,000 mm *These registers are not used by the MPXI-F6 or MPXI-F7, even though they are labeled in the APG Mod- bus software. †Setting is factory calibrated. Do not adjust. Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • sales@apgsensors.com...
Determines the number of decimal places included in the Calculated Reading(s). For MPXI-F6 and -F7, this is seen only when using APG Modbus to program the MPXI-F. This setting does not affect the 4-20 mA output. Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • sales@apgsensors.com...
Page 31
40405 - Maximum Distance (Factory Calibrated) Sets the distance (beginning from the Zero Reference) to the point where the sensor will stop looking for float signals, usually the bottom of the stem. A float beyond the Maximum Distance value will not be detect- 40406 - Full Distance Sets the positive distance (beginning from the sensor Zero Reference) to the point where the monitored vessel is considered full.
Page 32
40412 - Averaging Sets the number of qualified received float signals to average for the raw reading. Qualified received signals are placed in a first-in, first-out buffer, the contents of which are averaged for the raw reading. The larger the number of qualified received signals being averaged, the smoother the reading will be, and the slower the reading will be to react to quickly changing targets.
Page 33
40416 - Multiplier (Factory Calibrated) Calibrates the distance reading span. The Multiplier is shown by the values 1 - 1999, but these values are understood to represent 0.001 - 1.999. The default of 1000 (i.e. 1.000) is used for most applications. 40417 - Offset (Factory Calibrated) Sets the Zero Reference of the sensor, the point from which the calculated distance is measured.
Page 34
40424 - 2nd Float Offset Used to calibrate bottom float reading (-10,364 - 10,364 mm). Differences in fluid specific gravity can change the level at which a float rests in the liquid. Use this parameter to match probe reading to confirmed liquid level.
• MPXI-F Application Type Parameters Application 0 - Distance Register Function Value Range 40400 Device Address 1 to 247 40401 Units 1 = Feet, 2 = Inches, 3 = Meters 40402 Application Type 40403 Volume Units 40404 Decimal (Calculated) 0 - 3 Application 1 - Level Register Function...
Page 36
Application 3 - Volume of Standing Cylindrical Tank ± Conical Bottom Register Function Value Range Diameter 40400 Device Address 1 to 247 40401 Units 40402 Application Type 40403 Volume Units 1 - 7 40404 Decimal (Calculated) 0 - 3 40405 Max Distance (factory set) 40406...
Page 37
Application 5 - Volume of Horizontal Cylindrical Tank ± Hemispherical Ends Register Function Value Range 40400 Device Address 1 to 247 40401 Units 40402 Application Type 40403 Volume Units 1 - 7 40404 Decimal (Calculated) 0 - 3 40405 Max Distance (factory set) 40406 Full Distance...
Page 38
Application 7 - Pounds (Linear Scaling) Register Function Value Range 40400 Device Address 1 to 247 40401 Units 1 = Feet, 2 = Inches, 3 = Meters 40402 Application Type 40403 Volume Units 40404 Decimal (Calculated) 0 - 3 40405 Max Distance (factory set) 40406...
Page 39
Application 10 - Volume of Horizontal Oval Tank Register Function Value Range 40400 Device Address 1 to 247 40401 Units 40402 Application Type 40403 Volume Units 1 - 7 40404 Decimal (Calculated) 0 - 3 40405 Max Distance (factory set) 40406 Full Distance 0 - 32,768 mm...
Chapter 4: Maintenance • General Care Your MPXI-F level sensor is designed to be low maintenance. However, in general, you should: • Periodically inspect your MPXI-F to ensure the stem and floats are free of any heavy buildup that might impede the movement of the floats.
• CSA Certificate of Compliance Certificate of Compliance Certificate: 70219727 Master Contract: 237484 Project: 80042317 Date Issued: 2020-11-24 Issued To: Automation Products Group Inc 1025 West 1700 North Logan, Utah, 84321 United States Attention: Alex Fullmer 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.
Page 43
Certificate: 70219727 Master Contract: 237484 Project: 80042317 Date Issued: 2020-11-24 The MPI series utilizes a configurator style model coding system as defined below: Conditions of Certification: 1. Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of this equipment may generate an ignition-capable level of electrostatic charge.
Page 44
Certificate: 70219727 Master Contract: 237484 Project: 80042317 Date Issued: 2020-11-24 CLASS - C2258-03 - PROCESS CONTROL EQUIPMENT - Intrinsically Safe and Non - Incendive Systems - For Hazardous Locations CLASS - C2258-83 - PROCESS CONTROL EQUIPMENT-Intrinsically Safe and Non-Incendive - Systems-For Hazardous Locations-Certified to U.S.
Page 45
Certificate: 70219727 Master Contract: 237484 Project: 80042317 Date Issued: 2020-11-24 Conditions of Certification: 1. Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of this equipment may generate an ignition-capable level of electrostatic charge. Therefore, the equipment shall not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge on such surfaces.
Page 46
• IECEx Certificate of Conformity IECEx Certificate of Conformity INTERNATIONAL ELECTROTECHNICAL COMMISSION IEC Certification System for Explosive Atmospheres for rules and details of the IECEx Scheme visit www.iecex.com Certificate No.: IECEx SIR 19.0026X Page 1 of 4 Certificate history: Issue 0 (2019-03-22) Status: Current Issue No: 1...
IECEx Certificate of Conformity IECEx SIR 19.0026X Certificate No.: Page 2 of 4 Date of issue: 2021-03-11 Issue No: 1 Automation Products Group Manufacturer: 1025 West 1700 North Logan Utah 84321 United States of America Additional manufacturing locations: This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements.This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended...
Page 48
IECEx Certificate of Conformity IECEx SIR 19.0026X Certificate No.: Page 3 of 4 Date of issue: 2021-03-11 Issue No: 1 EQUIPMENT: Equipment and systems covered by this Certificate are as follows: The MPI / MPXI Series Magnetostrictive Level sensor is used for level readings of liquid level measurement applications. The device transmits an electrical pulse down a ferromagnetic wire which, when encountering a magnetic field, causes a torsion on the wire, resulting in part of the transmitted pulse being reflected back up the wire.
Page 49
IECEx Certificate of Conformity IECEx SIR 19.0026X Certificate No.: Page 4 of 4 Date of issue: 2021-03-11 Issue No: 1 DETAILS OF CERTIFICATE CHANGES (for issues 1 and above) This issue, Issue 1, recognises the following changes; refer to the certificate annex to view a comprehensive history: Modifications to model MPI with RS485 communication option;...
Need help?
Do you have a question about the MPXI-F Series and is the answer not in the manual?
Questions and answers