Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Ultrasonic Liquid Level Transmitter www.mobrey.
Reference Manual Rev BA , Rev BA February 2012 Mobrey MSP422 Mobrey MSP422 Ultrasonic Liquid Level Transmitter NOTICE 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. The products described in this document are NOT designed for nuclear-qualified applications. This device complies with part 15 of the FCC rules.
Reference Manual Rev BA , Rev BA February 2012 Mobrey MSP422 Table of Contents SECTION 1 Introduction Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Product Recycling/Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Manual Mobrey MSP422 IP2013, Rev BA February 2012 SECTION 5 Service and Troubleshooting Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Diagnostics for The MSP422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 General Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Manual IP2013, Rev BA February 2012 Section 1 Mobrey MSP422 Introduction Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1 Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2 Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2 SAFETY MESSAGES Procedures and instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 MANUAL OVERVIEW This manual provides installation, configuration, and maintenance information for the Mobrey MSP422 ultrasonic level transmitter. Section 2: Transmitter Overview Section 3: Installation Section 4: Starting up Section 5: Service and Troubleshooting Appendix A: Reference Data Appendix B: Product Certifications CUSTOMER SUPPORT For the latest customer support information, visit www.mobrey.
Reference Manual IP2013, Rev BA February 2012 Section 2 Mobrey MSP422 Transmitter Overview Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1 Components of the Transmitter . . . . . . . . . . . . . . . . . . . . page 2-2 THEORY OF OPERATION The Mobrey MSP422 ultrasonic level transmitter is designed to be mounted above a liquid and uses ultrasonic pulses to continuously measure the distance to the liquid surface.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 COMPONENTS OF THE TRANSMITTER The Mobrey MSP422 has a housing containing advanced electronics for signal processing, and terminals for connecting the external power supply. The electronics produces an ultrasonic signal from the transmitter face. It is a two-wire, loop-powered transmitter; the two wires are used for both 24 Vdc power supply connections and the 4–20 mA analog output signal.
Reference Manual IP2013, Rev BA February 2012 Section 3 Mobrey MSP422 Installation Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1 Before You Install . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2 Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-3 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 BEFORE YOU INSTALL The MSP422 is used for level measurement. The transmitter must be installed in a location where it is protected from ultraviolet radiation to prevent long term degradation of the plastics used e.g. shrouded from direct sunlight. It is important to correctly position the transmitter for reliable ultrasonic level measurement.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 MECHANICAL INSTALLATION Mounting Considerations Guidelines: a) The transmitter should be mounted above the liquid surface using the 2-inch thread provided, but not closer than 12 in. (0,3 m) to the surface. The transmitter does not detect any liquid surface closer than 12 in. (0,3 m) to the transmitter face. (See "Mounting the Transmitter Above the Liquid Surface" on page 3-5). Optional flanges and bracket kits are available to help mounting.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Figure 3-1. Min And Max Distances From Tank Wall Max. 3° Use Non-metallic Fitting / Flange C 6° Beam Half Angle C =1.3 in./ft. (11 cm/m) C Min. = 12 in. (0,3 m) Liquid Surface Conditions Guidelines: a) Foaming liquids can reduce the size of the returned echo because foam is a poor ultrasonic reflector. Mount an ultrasonic transmitter over an area of clear liquid, such as near the inlet to a tank or well.
Reference Manual IP2013, Rev BA February 2012 Mounting the Transmitter Above the Liquid Surface Mobrey MSP422 A 2-in. thread is provided to mount the transmitter. The thread form is either 2-in. BSPT or 2-in. NPT, and is clearly marked on the hexagon of the transmitter body. NOTE: The Mobrey MSP422 is designed to be mounted in a non-metallic fitting or flange. The use of metallic fittings/flanges is not recommended. To help installation, flange accessories and bracket kits are available from Mobrey.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Figure 3-2. Mounting The Mobrey MSP422 Using A Nozzle/Stand-off Use Non-metallic Fitting / Flange Tighten To A Torque Of 1.5 lbf.ft (2 Nm) Using The Hexagon. Do Not Use The Housing To Tighten PTFE L D NOTE: If the transmitter face does not protrude into the vessel, note the dimensions in Table 3-1 for Figure 3-2, and always ensure that the nozzle/vessel weld is smooth and free from internal weld beads or other projections. Table 3-1.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 ELECTRICAL INSTALLATION NOTE! The MSP422 is not intrinsically safe certified, and is therefore for use in non-hazardous (Ordinary Location) installations only. Cabling the Transmitter The Mobrey MSP422 is a two-wire, loop-powered transmitter requiring an external 24 Vdc power supply. There is one M20x1.5 cable entry. A suitable conduit system or cable gland must be used to keep the weather-proof rating. To cable the transmitter: 1.
Reference Manual Mobrey MSP422 Lightning / Surge Protection and Other Loop Devices 3-8 IP2013, Rev BA February 2012 If the area is prone to lightning strikes or voltage surges, a suppressor device may be installed between the transmitter and the control unit. If an additional loop-powered device or separately powered device is included in the two-wire loop, the transmitter must receive a minimum voltage of 12 Vdc at 21 mA loop current. (See "Load Limitations" on page A-2).
Reference Manual IP2013, Rev BA February 2012 Section 4 Mobrey MSP422 Starting up Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2 Programming The MSP422 . . . . . . . . . . . . . . . . . . . . . . . . page 4-4 Final Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-11 Power Failure . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Manual Mobrey MSP422 OVERVIEW IP2013, Rev BA February 2012 The Mobrey MSP422 ultrasonic level transmitter is operated from a menu of parameters, each held in a specific memory location within the transmitter. The memory locations may be pictured as a matrix, and navigated for programming the instrument using and steps. The Integral Display Menu structure is shown in Figure 4-1 on page 4-3.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 MSP422 Menu Map Figure 4-1.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 PROGRAMMING THE MSP422 Refer the Integral Display menu on a card tucked between the housing and body, and in Figure 4-1 on page 4-3. Display Units The display units are indicated by the position of the decimal point in the displayed PV value: Units Display m 8.000 ft. 26.24 in. 314.9 Default values are as follows: MSP422-B28: m MSP422-N28: ft.
Reference Manual IP2013, Rev BA February 2012 First Measurements Mobrey MSP422 With the transmitter installed and display units selected, the display will show what the instrument calculates as the liquid depth (level). This value is calculated by the microprocessor as being the difference between the distance-to-target being measured and the default value for the datum or bottom reference (b.rEF). Figure 4-2.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Setting the Bottom Reference Screen display: Defaults: b.rEF 8.000 (m), 26.24 (ft.), 314.9 (in.) NOTE: See Figure 4-1 on page 4-3 for a map of the programming menu structure and how to access all the menu options. To change the bottom reference (b.rEF) setting: a) If entering the menu system from the PV display, press the green button to indicate the “b.rEF” menu option (see above note.) b) Press the blue button to enter the menu for b.rEF.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 c) If this value is correct, press the red button , and then press the green button to get to the next menu option. d) Press the blue button to start editing. The first digit will flash to indicate it can be edited. e) Press the green button repeatedly to edit the flashing digit. f) Press the blue button to move to the next digit. The digit flashes to indicate it can be edited.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 NOTE: The MSP422 transmits nominally at once per second. Therefore, a damping time of zero will not necessarily give an immediate response. NOTE: See Figure 4-1 on page 4-3 for a map of the programming menu structure and how to access all the menu options. To change the output damping: a) If entering the menu system from the PV display, press the green button repeatedly until the “d” menu option is indicated (see above note.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 To change from the default action of Hold: a) If entering the menu system from the PV display, press the green button repeatedly until the “AL” menu option is indicated (see above note.) b) Press the blue button to enter the menu “AL”. The display indicates the present action setting. c) If this action is correct, press the red button and then the green button to get to the next menu option. d) Press the blue button to start editing.
Reference Manual Mobrey MSP422 IP2013, Rev BA February 2012 NOTE: See Figure 4-1 on page 4-3 for a map of the programming menu structure and how to access all the menu options. To change the 20 mA level: a) If entering the menu system from the PV display, press the green button repeatedly until the “S-20” menu option is indicated (see above note.) b) Ensure the target is the 20 mA level and, with the display indicating that level, press the blue button .
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 f) Press the red button to save this false echo and exit to the menu. However, if this false echo shouldn't be saved, press the blue button to exit to the menu. g) To store another false target echo, re-start from step (b). h) Press the green button to exit the menu and return to the PV display.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 4-12
Reference Manual IP2013, Rev BA February 2012 Section 5 Mobrey MSP422 Service and Troubleshooting Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2 Diagnostics for The MSP422 . . . . . . . . . . . . . . . . . . . . . . .
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 SERVICING The only maintenance required is to occasionally check the transmitter face to ensure it remains clean and check that the cover seal, wiring, and cable glands are in good condition. There are no spare parts for the Mobrey MSP422. If a problem persists, contact Mobrey Measurement for advice. DIAGNOSTICS FOR THE MSP422 General Troubleshooting No Display Check the power supply.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Appendix A Reference Data Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-1 Temperature and Pressure Ratings . . . . . . . . . . . . . . . . . page A-2 Load Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-2 Dimension Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Environment Ambient Temperature(2) –4 to 158 °F (–20 to 70 °C) Process Temperature –4 to 158 °F (–20 to 70 °C) Process Pressure –4 to 44 psi (–0,25 to 3,0 bar) Ingress Protection IP 66 Electromagnetic Compatibility EN61326 (Class B) Certifications CE-mark (1) Temperature: 68 °F (20 °C), Pressure: 1013 mbar (atmospheric pressure), and Relative Humidity: 50%. (2) See page A-2 onwards for approval temperature ranges.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 DIMENSION DRAWINGS Figure A-3. Transmitter Dimensions (Nylon-filled Glass Housing) Note: Dimensions are in inches (mm) Ø5.7 (Ø144) M20 x 1.5 Cable Entry 5.3 (135) MSP422 2.36 (60) A/F Hexagon 2-in. Thread 2.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 Figure A-4. The 2-in. NPT/BSPT mounting bracket Note: Dimensions are in inches (mm) Note: The combined weight of bracket and disc is 16 oz. (0,5 kg) 2-in. NPT/BSPT Threaded PVC Disc 0.51 (13) Stainless Steel Bracket SIDE VIEW 4.33 (110) 0.35 (9) 2.26 (57) Ø (Ø 1.0 26 2 ) 2.95 (75) ) ,5 (6 . 26 P 0 . TY END VIEW 1.5 (38) 2.24 (57) No. 4X 13 Long Self Tap Screw (3 Positions) Carbon Steel (Zinc Plated) 4.
Reference Manual IP2013, Rev BA February 2012 Appendix B Mobrey MSP422 Product Certifications Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page B-1 Manufacturing Location . . . . . . . . . . . . . . . . . . . . . . . . . . . page B-2 European Union Directive Information . . . . . . . . . . . . . . . page B-2 Non-hazardous Location Certifications . . . . . . . . . . . . . .
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 MANUFACTURING LOCATION Mobrey Limited – Slough, Berkshire, United Kingdom EUROPEAN UNION DIRECTIVE INFORMATION NOTE: Refer to the housing label to identify the approvals for your transmitter. The EC declaration of conformity for all applicable European directives for this product can be obtained by contacting our local sales representative.
Reference Manual IP2013, Rev BA February 2012 Mobrey MSP422 The Emerson logo is a trade mark and service mark of Emerson Electric Co. Rosemount is a registered trademark of Rosemount Inc. Mobrey is a registered trademark of Mobrey Ltd. All other marks are the property of their respective owners. We reserve the right to modify or improve the designs or specifications of product and services at any time without notice. © 2012 Mobrey Ltd. All rights reserved.
