delta-mobrey MSM400 User manual

Mobrey MSM400
Sludge Density Monitor
Reference Manual
IP258, Rev. C
Jan 2023
With a Standard Range 1 MHz / 3.3 MHz Ultrasonic Sensor

Reference Manual
IP258, Rev. C
Mobrey MSM400
Sludge Density Monitor
Title Page
Jan 2023
With a standard range 1 MHz / 3.3 MHz ultrasonic sensor
Read this manual before working with the product.
For personal and system safety, and for optimum product performance, make sure you
thoroughly understand the contents before installing, using, or maintaining this product.
For the latest customer support information, visit the Mobrey brand pages at
www.delta-mobrey.com, and click on the Mobrey Service or Product Support quick links.
The products described in this document are NOT designed for nuclear-qualified applications.
Using non-nuclear qualified products in applications that require nuclear-qualified hardware or
products may cause inaccurate readings.
For information on nuclear-qualified products, contact an Delta Mobrey Sales Representative.
Replacement equipment or spare parts not approved by Delta Mobrey for use as spare parts
could reduce the capabilities of the Mobrey MSM400, and may render the instrument
dangerous.
◼ Use spare parts supplied or sold by Delta Mobrey

Reference Manual
IP258, Rev. C
Table of Contents
Jan 2023
Table of Contents
TOC-i
Table of Contents
Section 1: Introduction
1.1 Safety messages ...................................................................... 1
1.2 Manual overview ......................................................................2
1.3 Customer support..................................................................... 2
1.4 Product recycling/disposal .......................................................... 2
Section 2: Overview
2.1 Safety messages ...................................................................... 3
2.2 The Mobrey MSM400 Sludge Density Monitor....................................... 4
2.2.1 Measurement principle ..................................................... 5
2.2.2 Sludge characteristics ...................................................... 5
2.2.3 Control unit features ........................................................ 6
2.2.4 Controller input ............................................................. 6
2.2.5 Control functionality........................................................ 6
2.3 Control unit functions ................................................................ 7
2.3.1 Standard functions .......................................................... 7
2.4 Control unit front panel.............................................................. 8
2.4.1 Keypad........................................................................ 8
2.4.2 Display ........................................................................ 9
Section 3: Installation
3.1 Safety messages .................................................................... 11
3.2 Before you install ................................................................... 12
3.2.1 Preliminary checks .........................................................12
3.2.2 General considerations ....................................................12
3.3 Mounting the Mobrey MSM400 control unit....................................... 13
3.4 Installing the gap sensors .......................................................... 14
3.4.1 Installation: Mobrey 433 tank mounted gap sensor......................... 14
3.4.2 Installation: Mobrey 448 pipe-section gap sensor .......................... 15
3.5 Electrical installation .............................................................. 17
3.5.1 Control unit electrical connections........................................... 17
3.5.2 Gap sensor connections and cabling.......................................... 19
3.5.3 Power connections .........................................................20
3.5.4 Earthing connections.......................................................21

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Jan 2023
Reference Manual
IP258, Rev. C
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Table of Contents
3.5.5 Relay connections ..........................................................22
3.5.6 Digital trigger input connections.............................................. 23
3.5.7 Current output and HART connections ....................................... 23
Section 4: Getting Started
4.1 Safety messages .................................................................... 31
4.2 Switching on the power ............................................................ 32
4.2.1 Switching on the Mobrey MSM400 .........................................32
4.3 The menu system ................................................................... 32
4.3.1 How to navigate the menu system ............................................ 32
4.3.2 How to change settings on parameter screens .............................. 35
4.4 Guidance to configuring the MSM400 ............................................. 38
4.4.1 Before starting to configure ................................................... 38
4.5 Initial setting-up .................................................................... 40
4.5.1 Operating modes ...........................................................40
4.5.2 PIN Security .................................................................40
4.5.3 System settings .............................................................41
4.5.4 Sensor input .................................................................42
4.6 Calibration .......................................................................... 43
4.6.1 AUTOCAL control unit calibration ............................................ 43
4.6.2 Manual entry control unit calibration ........................................ 47
4.7 Setup menu.......................................................................... 50
4.7.1 Primary Variable units .....................................................50
4.7.2 De-sludge function .........................................................50
4.7.3 Current Output .............................................................52
4.7.4 Relays........................................................................54
4.7.5 Alarms .......................................................................56
4.7.6 Faults ........................................................................57
4.7.7 Display .......................................................................58
4.8 Engineering.......................................................................... 60
4.8.1 Engineering Setup ..........................................................60
Section 5: Service and Health Checks
5.1 Safety messages .................................................................... 61
5.2 General troubleshooting........................................................... 62
5.2.1 Troubleshooting guide .....................................................62
5.2.2 Error messages..............................................................62

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IP258, Rev. C
Table of Contents
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TOC-iii
5.2.3 Fault messages..............................................................62
5.2.4 Other messages .............................................................63
5.3 Servicing............................................................................. 63
5.4 Restoring the factory defaults .................................................... 64
5.4.1 Restore factory default settings .............................................. 64
5.5 Tests ................................................................................. 64
5.5.1 Simulation (auto cycle) ........................................................ 64
5.5.2 Display .......................................................................65
5.5.3 Set current ..................................................................65
5.5.4 Current output calibration..................................................... 65
5.5.5 Readings and results .......................................................66
5.5.6 Control unit diagnostics ...................................................68
5.5.7 Sensor diagnostics ..........................................................68
5.5.8 Fixed data ...................................................................69
Appendix A: Reference Data
A.1 Control unit specifications ........................................................ 71
A.1.1 General ......................................................................71
A.1.2 Display .......................................................................71
A.1.3 Electrical ....................................................................71
A.1.4 Mechanical ..................................................................72
A.1.5 Environment ................................................................73
A.2 433 sensor specification ........................................................... 74
A.2.1 General ......................................................................74
A.2.2 Connections .................................................................74
A.2.3 Environment ................................................................74
A.2.4 Approvals....................................................................74
A.3 448 sensor specification ........................................................... 75
A.3.1 General ......................................................................75
A.3.2 Connections .................................................................75
A.3.3 Environment ................................................................75
A.3.4 Approvals....................................................................75
A.4 Dimensional drawings .............................................................. 76
Appendix B: Product Certifications
B.1 Safety messages .................................................................... 77
B.2 Approved manufacturing location...................................................... 78

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Table of Contents
B.3 European directive information .................................................. 78
B.4 Hazardous locations certification ...................................................... 79
B.4.1 Control unit approvals .....................................................79
B.4.2 Gap sensor approvals.......................................................79
B.4.3 Instructions for hazardous area installation................................. 80
Appendix C: Menu Maps and Parameters
C.1 Safety messages .................................................................... 83
C.2 Menu maps and parameters ....................................................... 83
Appendix D: Additional Features
D.2 Direct parameter access ........................................................... 91

Section 1: Introduction
1
Reference Manual
IP258, Rev. C
Section 1 Introduction
Section 1: Introduction
Jan 2023
Safety messages............................................................................ page 1
Manual overview ........................................................................... page 2
Customer support.......................................................................... page 2
Product recycling/disposal ..................................................................... page 2
1.1 Safety messages
Procedures and instructions in this manual may require special precautions to ensure the safety
of the personnel performing the operations. Information that raises potential safety issues is
indicated by a caution symbol ( ). The external hot surface symbol ( ) is used when a surface
is hot and care must be taken to avoid possible burns. If there is a risk of an electrical shock the
( ) symbol is used. Refer to the safety messages listed at the beginning of each section before
performing an operation preceded by this symbol.
Failure to follow these installation guidelines could result in death or serious injury:
◼ The Mobrey MSM400 Sludge Density Monitor must be installed, connected,
commissioned, operated, and maintained by suitably qualified personnel only,
observing any national and local requirements that may apply
◼ Use the equipment only as specified in this manual. Failure to do so may impair the
protection provided by the equipment
Explosions could result in death or serious injury:
◼ Please review the approvals section of this reference manual for any restrictions
associated with an installation
Electrical shock could cause death or serious injury:
◼ If the control unit is installed in a high voltage environment and a fault condition or
installation error occurs, high voltage may be present on leads and terminals
◼ Use extreme caution when making contact with the leads and terminals
◼ Make sure that power to the control unit is off while making connections

2
Section 1: Introduction
Section 1: Introduction
Jan 2023
Reference Manual
IP258, Rev. C
1.2 Manual overview
This manual provides installation, configuration and maintenance information for the
Mobrey MSM400 with a standard range 1 MHz / 3.3 MHz ultrasonic sensor.
Section 2: Overview
Section 3: Installation
Section 4: Getting Started
Section 5: Service and Health Checks
Section A: Reference Data
Section B: Product Certifications
Section C: Menu Maps and Parameters
Section D: Additional Features
1.3 Customer support
For the latest customer support information, visit the Mobrey brand pages at
www.delta-mobrey.com, and click on the Mobrey Service or Product Support quick links.
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of, and understand, the hazard. If the product being returned was exposed to
a hazardous substance as defined by OSHA, a copy of the required Material Safety Data
Sheet (MSDS) for each hazardous substance identified must be included with the returned
goods.
1.4 Product recycling/disposal
Recycling of equipment and packaging should be taken into consideration. The product and
packaging should be disposed of in accordance with local and national legislation.