LT- 561 MSP900SH-A

Prévia do material em texto

MOBREY 
MSP900SH Series level transmitter 
 
Software version 2.1 
Level
Installation, Operation & Maintenance Manual 
IP2040/IM 
January 2006 
 
 
www.mobrey.com 
 
 
 
 
 
 
 Page 2
 
CONTENTS 
 
 
 
 Page 
 
 
 
 
1. Introduction 3 
 
2. The MSP900SH ultrasonic level transmitter 3 
2.1 Type numbering system 3 
2.2 Safety data 4 
2.3 Pressure Equipment Directive 4 
2.4 Specifications 4 
 
3. Installation 5 
3.1 Location of the MSP900SH transmitter 5 
3.1.1 General considerations 5 
3.1.2 Liquid surface conditions 6 
3.1.3 In-tank / well effects 6 
3.1.4 Open Channel Flow installations 6 
3.2 Mounting the transmitter above the liquid surface 8 
3.3 Wiring 8 
3.4 Additional components in the 2 wire loop 8 
3.4.1 Safety Barriers 8 
3.4.2 Lightning / surge protection and other loop devices 8 
3.5 Wiring to allow HART communication 9 
3.6 Use with Mobrey Measurement MSP90 Series controllers 9 
3.6.1 Wiring 9 
 
4. Maintenance 10 
 
5. Commissioning / Programming 10 
5.1 Current output 10 
5.2 Hart programming of the MSP900SH transmitter 10 
 
6. Accessories 11 
6.1 Submersion sheild 11 
6.2 Head Verification Device 11 
 
Appendices 
 
Appendix 1 MSP900SH Programming parameters 12 
Appendix 2 Use with Mobrey Measurement MSP90 Series controllers - Example 13 
Appendix 3 71097/1131 FM Intrinsically Safe Control (Entity) Drawing 14 
 
 
 
 
 
 
 
Footnote :- 
In this manual the following terms are used which refer to trademarks from other manufacturers: 
 
HART: is the protocol adopted for the MSP900 SMART Communications. 
HART is a registered trademark of the HART Communications Foundation and is a mnemonic for 
Highway Addressable Remote Transducer. 
 
 
 
 Page 3 
 
1.0 Introduction 
 
The MSP900 ultrasonic level transmitter is designed to be mounted above a liquid and will measure the distance to the 
liquid surface. 
When programmed with details of the vessel, sump or open channel, the MSP900 will compute level, contents or flow 
and give a 4-20mA signal proportional to the chosen variable. Full programming details are given in the Operating 
Manual IP2040/OM. 
 
MSP900 is a two wire 24V dc loop powered transmitter and may be connected to any suitable dc power source using the 
factory fitted cable. The Mobrey Measurement MCU900 range of Control Units is designed to be used with the MSP900 
Transmitter in this way. 
 
The MSP900 transmitter may be mounted in a hazardous area provided that it is supplied from a protected power supply. 
When using the MSP900 transmitter with an MCU900 Control Unit, no external Intrinsically Safe Barriers are required as 
all protection is built-in to the MCU900 Control Unit. 
When using any other power supply, it is the responsibility of the user to ensure suitable Intrinsically Safe Barriers are 
installed. Full details are given in section 3.4.1 
 
2.0 The MSP900SH ultrasonic level transmitter. 
 
The transmitter is a factory sealed unit with an operating range of 0.3m to 12m. When powered up the transmitter will 
give a 4-20mA signal on the two wire power cable over the factory default range : 4mA at 12m; 20mA at 0.3m. This 
range may be adjusted using a HART programmer. See section 5.0 
(Note: full programming instructions are given in the Operating Manual IP2040/OM) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fig (i) 
 
A Stainless Steel mounting bracket and 1” thread type – G1” (1” BSPP) (-A); 1” NPT (-U) Nylon locknut are supplied with 
the transmitter to facilitate mounting. 
 
2.1 Type numbering system 
 
 MSP Mobrey Ultrasonic level transmitter 
 
 900 UPVC construction, 12m operating range 
 
 SH Factory sealed transmitter, HART communications 
 
 -A ATEX & CSA certified intrinsically safe for Zone 0 
 -U FM & CSA certified intrinsically safe for Zone 0 and FM for DIV 1 
 
 /3 Fitted with 3m two core shielded cable 
 /20 Fitted with 20m two core shielded cable 
 /50 Fitted with 50m two core shielded cable 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Page 4
 
2.2 Safety Data 
 
Type numbers MSP900SH-A/** MSP900SH-U/** 
Certificate numbers ATEX BAS01ATEX1061X FM 3021193 
 CSA 1352094X CSA 1352094X 
ATEX Coding 
(EU Directive 94/9/EC) II I G 
 
Cenelec Coding EEx ia IIC T4 (-40°C<Ta<60°C) 
 EEx ia IIC T6 (-40°C<Ta<55°C) 
 
CSA Coding Ex ia IIC T4 (-40°C<Ta<60°C) Ex ia IIC T4 (-40°C<Ta<60°C) 
 Ex ia IIC T6 (-40°C<Ta<55°C) Ex ia IIC T6 (-40°C<Ta<55°C) 
 
FM Coding IS/I/1/ABCD T6 Ta = 55°C 
 T4 Ta = 60°C 
 IS/I/0/AEx ia IIC T6 Ta = 55°C 
 T4 Ta = 60°C 
 
Safety parameters 
 Ui 30 V Ui (Vmax) 30 V 
 Ii 120mA Ii (lmax) 120mA 
 Pi 0.82W Pi 0.82W 
 Li 27mH Li 27mH 
 Ci 5nF Ci 5nF 
 
 
2.3 Pressure Equipment Directive 
 
The MSP900SH transmitter does not enclose a pressurised volume and therefore is a component and outside the scope 
of the Pressure Equipment Directive 97/ 23/EC. 
 
Accordingly, the Declaration of Conformity for the MSP900SH does not list the Pressure Equipment Directive. 
 
2.4 Specifications 
 
Materials of construction: 
 Body Material UPVC (stabilised) 
 Cable sealant Epoxy adhesive 
 Locknut Nylon 
 Bracket 316 Stainless Steel 
 Cable PVC sheathed two core shielded cable 
 
Electrical 
 Supply voltage 
 Transmitter in Non Hazardous area: 12-40V dc 
 Transmitter in Hazardous area: 12-30V dc 
 Output 4-20mA 
 Communications HART Digital communications (Rev. 5) 
 Earthing None required 
 Cable size Overall diameter 4mm, two cores each 0.22 mm2 
 Cable length 3m, 20m or 50m. 
 Cable resistance 0.1 Ohm per metre length. 
 
Operating 
 Range 0.3 to 12m 
 Temperature 
 Ambient -40°C to +60°C 
 Wetside -40°C to +60°C 
 Pressure 0 bar to 3.0 bar 
 (restricted to 0 - 1.0 bar for use in Canada) 
 
 
 
 
 
 
 
 
 
 
 Page 5 
 
3.0 Installation 
 
The MSP900SH may be mounted in a hazardous area provided it is supplied through or from a suitably protected 
power supply (such as the Mobrey Measurement MCU900 Series). 
 
 Refer to the safety parameters given in section 2.2 and safety instruction leaflet IP2040/SI (-A), 71097/1131 (-U). 
 
3.1 Location of the MSP900SH transmitter 
 
 
The transmitter must be installed in a location where it is protected from ultraviolet 
radiation, in order to prevent long term degradation of the plastics used in its 
construction e.g. shrouded from direct sunlight. 
 
Correct location of the transmitter is essential for the reliable operation of any ultrasonic 
level measurement system. Whilst the transmitter may be site tuned to deal with most 
application conditions, it is strongly recommended that the following guidelines should 
be adopted wherever relevant. 
 
For maximum accuracy and stability of the level measurement reading the transmitter 
should always be shrouded from direct sunlight and any radiated heat. 
 
 
 
 
The transmitter should be mounted as near vertical as 
possible to ensure a good echo from the liquid surface and 
maximum echo size received. 
The beam angle (to the half power point) of the transmitter 
is 12 degrees inclusive. 
 
If the transmitter is located near the side of the tank or 
well, there will be no false echo generated provided the 
wall is smooth and free of protrusions. 
 
 
However, there will still be a reduction in the echo size. To avoid large echo size loss, it is recommended that the 
transmitter never be mounted closer than 300mm to the wall. 
Fatty, dirty or viscous liquids can cause a “scum line” to build-up on the tank or well wall. Avoid false echoes from this by 
enabling “scum line prevention” software inthe MCU control unit. 
 
If the transmitter is mounted in an enclosed tank, avoid mounting the transmitter in the centre of the tank roof as this 
could act as a parabolic reflector and create unwanted echoes. 
 
 
 
If the transmitter is mounted in a stand-off or nozzle, it is always 
preferable that the transmitter face be at least 5mm proud of the 
stand-off such that it protrudes beyond the stand-off and into the 
tank. 
 
 
Remember that the minimum operating range of the transmitter is 
300mm. The transmitter will not detect any liquid surface closer than 
300mm to the transmitter face. 
 
 
 
 
Obstructions in the tank or well may generate echoes which can be 
confused with the real liquid surface echo. Obstructions within the 
beam angle generate strong “false-echoes”; wherever possible, the 
transmitter should be positioned such that false echoes are avoided. 
 
To avoid detecting unwanted objects in the tank or well, it is 
advisable to maintain a distance of at least 0.11m from the centre line 
of the transmitter for every metre range to the obstruction. 
 
 
 
 
 
 
 
 
 Page 6
 
3.1.1 General considerations 
 
• The MSP900SH transmitter complies with the European Directive for Electro Magnetic Compatibility (EMC) 
 Class B. 
 It is not advisable to mount the transmitter in close proximity to a source of electrical noise such as a variable 
 speed drive or other high powered electrical device. 
 
 
3.1.2 Liquid surface conditions 
 
• Foaming liquids can reduce the size of the returned echo as foam is a poor ultrasonic reflector. It is always 
inside bore of the stilling tube is at least 100 mm and is smooth and free from joints or 
 protrusions. It is also preferable that the bottom of the stilling tube does not become uncovered, thus 
 preventing the ingress of foams. 
 
• Beware of mounting the transmitter directly over any inlet stream. 
 
• Liquid surface turbulence is not normally a problem unless it is excessive. In most cases, the effects of 
 turbulence are minor, with excessive turbulence being catered for by fine tuning the transmitter on site if 
 necessary. 
 
3.1.3 In-tank / well effects 
 
• Stirrers or agitators can cause a vortex. Always try to mount the transmitter off-centre of any vortex to maximise 
 the return echo. 
 As stirrer blades become uncovered they will create echoes as they pass through the ultrasonic beam. The 
 
• In non-linear tanks with rounded or conical bottoms, always mount the transmitter off-centre. In some cases, 
 it may be desirable to install a perforated reflector plate on the tank bottom directly under the transmitter 
 centre line to ensure a satisfactory return echo. 
 
• Avoid mounting the transmitter directly above any pumps in the well as the transmitter will detect the pump 
 casing as the liquid falls away. If this is not possible, fine tuning on site may be required to ignore echoes 
 from the pump casings. 
 
• If the well is subject to flooding, it is advisable to fit the transmitter with a submersion shield. Whilst the 
 transmitter will of course stop working whilst covered with liquid, the transmit face will be protected from 
 contamination by an air lock inside the shield. 
 
3.1.4 Open Channel Flow installations 
 
There are normally two distinct parts to an open channel flow measurement system; the primary element (flow structure) 
and the secondary element (Head measurement instrumentation). 
For accurate open channel flow measurement, both parts of the system must be installed accurately. 
 
This manual explains some key aspects of the installation of the secondary element, in this case the ultrasonic 
transducer. 
For full details of the installation of a primary element such as a flume or weir, reference should be made to the relevant 
British (BS3680) or International standard. 
 
In the United Kingdom, Mobrey Measurement offers a complete installation and commissioning service for open channel 
flow measurement systems. For further information contact the sales office and/or refer to Mobrey Measurement’s ‘The 
Guide’. 
 
* Positioning of the transmitter is critical and should be the correct distance upstream from the flow structure as stated in 
BS3680 e.g. a distance of 4 to 5 times hmax for a thin plate weir or 3 to 4 times hmax for a flume. 
For optimum accuracy. the front face of the sensor should be positioned at a height that is at least equal to the maximum 
flow depth plus the blanking distance of the transducer. A minimum distance of 310mm is recommended. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Page 7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
It is important to note that the bottom reference of the transmitter should be related to the centre of the invert of the 
primary device, NOT the distance to the channel bottom directly below the transmitter. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In addition to the above, when setting the bottom reference on a ‘V’ notch weir it is important that the true invert of the 
weir is taken and not the meniscus liquid level, which may be 3 to 4mm above the true invert. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
• The liquid surface at the point of measurement must have a stable, smooth surface and uniform approach 
 velocity. It must not be affected by baffles, foam, hydraulic jumps or any other object likely to cause flow 
 disruption. 
 
• The primary element should be free from any situation where it is likely to ‘drown’ (refer to relevant standard 
 for further information) 
 
• The MSP900SH transmitter has integral temperature compensation and must be protected at all times from 
 direct sunlight and any radiated heat. 
 For maximum accuracy and stability of level measurement reading the transmitter should always be shrouded 
 to prevent the incidence of direct sunlight. 
 If the flow structure permits, mount the transmitter within the flow channel or chamber. 
 
• In many installations, the use of a calibration device is mandatory. Mobrey Measurement offer the MSP-HVD for 
 In order to minimise measurement uncertainties when a calibration device is installed, it is recommended that 
 the calibrated range should be kept to a realistic minimum. i.e. max flow plus 10mm. Ensure that the target 
 plate of the calibration device does not fall within the 300mm blanking distance of the transmitter. 
 
 All calibrations should be derived to suit as installed conditions. 
 
 If you are in doubt about any aspect of transmitter installation, contact Mobrey Measurement (Service Division) 
 who will be pleased to advise. 
Hmax 
Hmax 
+ 300mm
Transmitter 
bottom
Flow 
Channel 
invert Primary element (eg. 
Flume, weir) invert 
Transmitter 
bottom 
reference 
True invert 
Meniscus 
 Page 8
 
3.2 Mounting the transmitter above the liquid surface 
 
The transmitter is supplied with a purpose made 316 Stainless Steel mounting bracket which should be used to mount 
the transmitter over the liquid surface. 
The bracket is designed to fit over the 1” threaded neck of the transmitter and is retained by a locknut. 
 
IMPORTANT : Never suspend the transmitter by the cable. 
 
Use a chain or wire through the hole provided in the bracket, which is shaped to ensure that the transmitter will hang 
perpendicular to the liquid surface. 
Check that the material of the chain or wire is corrosion resistant to the liquids and any vapours present. 
 
Alternatively, the bracket may be bolted to a suitable cross member above the liquid surface. Ensure that the transmitter 
is perpendicular to the liquid surface to maximise the return echo size. 
 
Check that the maximum liquid level will not encroach into the 0.3m blanking zone of the transmitter. 
 
Note: To aid alignment, the echo size / signal strength can be displayed on the MCU900 control unit or on a suitable 
HART compliant handheld. Refer to IP2030/OM for full details. 
 
3.3 Wiring 
 
The transmitter is supplied with a factory fitted length of PVC sheathed two core shieldedcable which should be neatly 
run back to the control unit or a suitable local IP65 junction box. 
 
The transmitter cable cores are identified as follows :- 
 
Red 24V dc 
Black 0V dc 
Screen Earth : must be connected to an Intrinsically Safe Earth in the non-hazardous area if the transmitter is 
 Connect to a standard earth if the transmitter is not in a hazardous area. 
 
The cable may be cut to length on site or may be extended using an IP65 junction box and suitable extension cable up to 
a total length of 3000 m. 
 
Where the transmitter is installed in a hazardous area, it is the responsibility of the user to ensure that the cable 
parameters of the total length of cable used together with the parameters of the MSP900SH are less than the safety 
parameters of the safety barrier (or MCU900 Control Unit if used instead) . See section 3.4 below. 
Multicore cable may be used provided that each pair within the multicore has a separate shield. 
 
As good instrumentation practice, avoid tracking the cable with other cables which carry high voltages if possible. 
 
3.4 Additional components in the two wire loop 
 
3.4.1 Safety barriers – installation of the transmitter in a hazardous area 
 
When used with the Mobrey Measurement Control Unit Series MCU900, NO additional safety barriers are required as 
the output from the control unit is Intrinsically Safe (refer to manual IP2030/IM supplied with the control unit for full 
details) 
 
If powering the transmitter from any other power supply, it is the responsibility of the user to ensure a suitable Intrinsically 
Safe barrier is fitted in the safe area. 
 
The barrier must be chosen such that it’s output parameters Uo, Io and Po are less than Ui, Ii and Pi of the 
MSP900SH transmitter. 
For the MSP900SH transmitter, Ui = 30V, Ii = 120mA and Pi = 0.82W. 
 
In addition, the sum of the capacitance and the inductance of the transmitter and any extra cable fitted 
must not exceed the maximum specified for the barrier chosen. 
For the MSP900SH transmitter with 50m of factory fitted cable, Ci = 5nF and Li = 27mH 
 
Suitable barriers include the MTL products 706, 706S, 787, and 787S. 
 
3.4.2 Lightning / surge protection and other loop devices 
 
It is allowable to fit loop powered or separately powered devices in the two wire loop provided that the transmitter 
receives a minimum voltage of 12V dc at 21 mA loop current. 
 
It is the responsibility of the user to ensure any loop devices, if mounted in the hazardous area, carry the requisite 
hazardous area certification and do not cause the system parameters to exceed those of the safety barrier (or MCU900). 
 
 
 Page 9 
 
If the area is prone to lightning strikes or voltage surges, fitting of a supressor device is desirable between the transmitter 
and the control unit. 
 
3.5 Wiring to allow HART communication 
 
When used with the Mobrey Measurement MCU900 Control Unit, there is no need to install an external load resistor in 
the loop as there is a suitable resistor built in to the Control Unit. 
 
If it is intended to use HART digital communications with the MSP900SH transmitter, a 250Ohm 0.25W load resistor 
must be installed in the loop. 
 
If the transmitter is being supplied through a safety barrier, ensure the type chosen will pass HART/SMART information. 
 
Once installed, a HART communicator can be connected across the load resistor, or across the loop at any point 
downstream of the load resistor. 
 
It is the responsibility of the user to ensure that any HART communicator used in the hazardous 
area is suitably certified for that area. 
 
3.6 Using the MSP900SH transmitter with an MSP90 Series controller 
 
Although the MSP900SH transmitter is designed for use with the new MCU900 Series control units, there are many 
thousands of MSP90 Series control units in the field with which it may be used. 
 
It is important to note that the MSP90 Controller was normally used with an MSP90 style ultrasonic transducer, with the 
controller supplying a voltage pulse to the transmitter and then interpreting and processing the return echo. 
The MSP900 transmitter works in a different way, as it performs all processing in the transmitter itself, requiring only a 
loop power connection to the control unit. 
 
3.6.1 Wiring 
 
When connecting the MSP900SH transmitter to an MSP90 Series control unit, different terminals are used in the control 
unit. 
If connected, disconnect the existing MSP90 type transducer. These terminals are not used with the new MSP900SH 
type transmitters. 
Connect the MSP900SH screened and twisted pair cable to the current input terminals of the MSP90 Controller as 
follows: 
 
MSP900SH wire Wall mount controller type 
MSP90 - 11- C 
Panel mount controller type 
MSP90 - 61* - C 
Red Terminal 18 : I in Loop Power+ Terminal 18 : I in Loop Power+ 
Black Terminal 14 : 4-20mA I in+ Terminal 8 : Current in+ 
 
Important note when the transmitter is located in a hazardous area: 
 
If the MSP900SH transmitter is located in a hazardous area, it is the responsibility of the user to ensure that a 
suitable Intrinsically Safe barrier is fitted in the safe area. 
 
The barrier must be chosen such that it’s output parameters Uo, Io and Po are less than Ui, Ii and Pi of the MSP900SH 
transmitter. 
For the MSP900SH transmitter, Ui = 30V, Ii = 120mA and Pi = 0.82W. 
 
In addition, the sum of the capacitance and the inductance of the transmitter and any extra cable fitted must not exceed 
the maximum specified for the barrier chosen. 
For the MSP900SH transmitter with 50m of factory fitted cable, Ci = 5nF and Li = 27uH 
 
Suitable barriers include the MTL products 706, 706S, 787, and 787S. 
 
3.6.2 Programming the MSP90 Series control unit to operate with the MSP900SH transmitter 
 
The MSP900SH is a transmitter and will need to be programmed to give a 4-20mA signal proportional to the level in the 
tank. (See Section 5 of this manual) 
 
On the MSP90 control unit : 
 
Set P39 to 7. This sets the MSP90 control unit to current input mode. 
 
Set P03 to the value, in metres, corresponding to the range of the 4-20mA output of the MSP900SH transmitter. 
In a tank or sump of depth 8.5m, you will most likely have programmed the MSP900SH to give 4-20mA over the range 
0.3m to 8.5m. P03 in the MSP90 control unit will therefore need to be set to 8.2. 
 
 Page 10
 
P21 is a parameter which is used to convert level measurement to contents measurement. Where the vessel is a simple 
tank or sump and the readout is required to be level, leave P21 set to 0. 
 
If it is required to give a readout in contents, P21 should be set dependant upon vessel shape - refer to the MSP90 
controller manual. 
 
A typical example is given in Appendix 2 of this manual. 
 
Refer to the manual supplied with the MSP90 Control unit for full programming details of the MSP90 control unit if in any 
doubt. 
 
4.0. Maintenance 
 
There is no routine maintenance required for the MSP900SH other than an occasional check to ensure that the front face 
of the transmitter is clean and that the wiring is in good condition. 
 
5.0 Commissioning / Programming 
 
5.1. Current Output 
 
This section gives a very brief overview to allow checking of the installation. For full programming details, refer to the 
Operating Manual IP2040/OM. 
 
When power is applied to the transmitter it will give a 4-20mA signal proportional to “level” based on some factory set 
default values for a typical tank :- 
 
Bottom reference (depth of tank) 12m from transducer face 
4mA level 0m 
20mA level 11.7m 
 
Hence, for a liquid surface (or other flat target) that is 5m away, the current on the loop will represent a liquid level of 
(12m – 5m) = 7m with a value of 13.57mA. 
 
The user may programme the MSP900SH transmitter with the specific installation details to re-range the 4-20mA signal. 
 
The MSP900SH transmitter is usually connected to a Mobrey Measurement MCU900 control unit which allows access to 
and changing of the transmitteroperating parameters. 
 
5.2. HART programming of the MSP900SH transmitter 
 
If being used without the MCU900 Control Unit a HART compatible programming device will be necessary (see 
IP2040/OM) and the loop must have a load resistor installed. 
 
The Mobrey Measurement PC software ”Mobrey H-Conf401” is also available, allowing a computer fitted with a HART 
modem to communicate with and re-programme the MSP900SH transmitter. Note : A HART modem is supplied with the 
Mobrey H-Conf401 software. 
 
To further assist the user who has access to a HART programming tool, Appendix 1 gives a list of the operating 
Parameters of the MSP900SH transmitter. 
 
HART transmitters are able to provide up to 4 Variables in digital format. These are known as the Primary (PV), 
secondary (SV), Tertiary (TV) and Quaternary (QV) Variables, and are factory set by the manufacturer of the HART 
transmitter. 
 
HART compatible programming or control devices are able to read these variables and display them on demand. 
 
The MSP900SH variables are factory set as follows: 
 
Primary Variable (PV) The primary reading from the transmitter, normally level, but which the user may 
 change by programming of the MSP900SH, for example to Contents or Flow. 
Secondary Variable (SV) Factory fixed to read the level calculated by the MSP900SH 
Tertiary Variable (TV) Factory fixed to read distance (range) to target. 
Quaternary Variable (QV) Factory fixed to read the temperature recorded by the MSP900SH. 
 
When being used with an MCU Series control unit, these variables are available to view as parameters: 
 
PV D900 
SV D901 
TV D902 
QV D903 
 
 
 Page 11 
 
6.0 Accessories 
 
6.1. Submersion shield 
 
The MSP-SUB2 is a tubular shield which slips over the black transmitter front housing. 
This is usually fitted in wet well installations where the liquid level could rise faster than the pumps can pump out. As the 
liquid covers the transmitter, an air-lock is created in the shield and the transmitter face remains free from contamination. 
 
6.2 Head Verification Device 
 
The MSP-HVD is a combined mounting bracket and verification device for use with the MSP900SH transmitter, normally 
used in Open Channel Flow applications. 
The HVD is mounted on an arm over the channel and supports the MSP900SH on an integral bracket. A target plate at a 
fixed distance from the transmitter face may be swung under the transmitter. The level and flow readings calculated by 
the transmitter in this situation may then be compared to a local calibration plate to ensure that the system is functioning 
correctly. 
 
Refer to data sheet IP267 for further details. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Page 12
 
Appendix I : MSP900SH programming parameters 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Page 13 
 
Appendix 2 - Use with Mobrey Measurement MSP90 Series controllers – example 
 
Programming example when using the new MSP900SH transmitter with an old style MSP90 Series controller. 
A2.1 Vertical rectangular or cylindrical sump, originally displaying level in metres, 4.2m from transducer face to bottom of 
sump. 
 
• The new MSP900SH should be mounted in the same position as the old transducer such that the distance to 
 the bottom of sump is 4.2m. If this is not possible, re-measure the distance to the bottom of the sump once 
 the MSP900SH transmitter is mounted. 
 
• The MSP900SH transmitter should be configured with a bottom reference of 4.2m 
 (or whatever the new distance is) and the 4-20mA output ranged from 0m level to 3.9m level 
 (4.2 - 0.3m dead zone = 3.9m). 
 If there is no HART device available to configure the MSP900SH in this way, refer to the note below. 
 
• On the MSP90 control unit : 
 Set P39 = 7 (Current input) 
 Set P3 = 3.9 (Range of 4-20mA signal) 
 Set or check P21 = 0 (linear vessel) 
 
Note : If it is not possible to re-range the MSP900SH transmitter on site, it may be used with factory default settings. The 
4-20mA from the MSP900SH transmitter is set for 4mA at 0m and 20mA at 11.7m. 
 
In this case, P3 must be set to 11.7 as this is the full range of the transmitter signal. 
 
If in doubt, do not hesitate to contact Mobrey Measurement Customer Support for further advice. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Page 14
 
Appendix 3 - Intrinsically safe control drawing 
 
 
 
 
 
 
 
 Page 15 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Level 
Installation, Operation & Maintenance Manual
IP2040/IM
January 2006
 
Mobrey Measurement Mobrey Inc
158 Edinburgh Avenue, 19408 Park Row, Suite 320, 
Slough, Berks, UK, SL1 4UE Houston, TX 77084 USA 
T +44 (0) 1753 756600 T +281 398 7890 
F +44 (0) 1753 823589 F +281 398 7891 
mobrey.sales@EmersonProcess.com mobrey.sales@EmersonProcess.com 
www.mobrey.com www.mobrey.com 
 
 
Mobrey SA-NV Belgium tel: 02/465 3879 
Mobrey GmbH Deutschland tel: 0211/99 808-0 
Mobrey SA France tel: 01 30 17 40 80 
Mobrey sp z o o Polska tel: 022 871 7865 
Mobrey AB Sverige tel: 08-725 01 00 
 
© 2005, Mobrey. The right is reserved to amend details given in this publication without notice. 
ABCDEF
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 /JPEG2000ColorImageDict <<
 /TileWidth 256
 /TileHeight 256
 /Quality 30
 >>
 /AntiAliasGrayImages false
 /CropGrayImages true
 /GrayImageMinResolution 300
 /GrayImageMinResolutionPolicy /OK
 /DownsampleGrayImages true
 /GrayImageDownsampleType /Bicubic
 /GrayImageResolution 300
 /GrayImageDepth -1
 /GrayImageMinDownsampleDepth 2
 /GrayImageDownsampleThreshold 1.50000
 /EncodeGrayImages true
 /GrayImageFilter /DCTEncode
 /AutoFilterGrayImages true
 /GrayImageAutoFilterStrategy /JPEG
 /GrayACSImageDict <<
 /QFactor 0.15/HSamples [1 1 1 1] /VSamples [1 1 1 1]
 >>
 /GrayImageDict <<
 /QFactor 0.15
 /HSamples [1 1 1 1] /VSamples [1 1 1 1]
 >>
 /JPEG2000GrayACSImageDict <<
 /TileWidth 256
 /TileHeight 256
 /Quality 30
 >>
 /JPEG2000GrayImageDict <<
 /TileWidth 256
 /TileHeight 256
 /Quality 30
 >>
 /AntiAliasMonoImages false
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 /MonoImageMinResolution 1200
 /MonoImageMinResolutionPolicy /OK
 /DownsampleMonoImages true
 /MonoImageDownsampleType /Bicubic
 /MonoImageResolution 1200
 /MonoImageDepth -1
 /MonoImageDownsampleThreshold 1.50000
 /EncodeMonoImages true
 /MonoImageFilter /CCITTFaxEncode
 /MonoImageDict <<
 /K -1
 >>
 /AllowPSXObjects false
 /CheckCompliance [
 /None
 ]
 /PDFX1aCheck false
 /PDFX3Check false
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 /PDFXNoTrimBoxError true
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 /PDFXOutputIntentProfile ()
 /PDFXOutputConditionIdentifier ()
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 /NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken voor kwaliteitsafdrukken op desktopprinters en proofers. De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 5.0 en hoger.)/NOR <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>
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 /ENU (Use these settings to create Adobe PDF documents for quality printing on desktop printers and proofers. Created PDF documents can be opened with Acrobat and Adobe Reader 5.0 and later.)
 >>
 /Namespace [
 (Adobe)
 (Common)
 (1.0)
 ]
 /OtherNamespaces [
 <<
 /AsReaderSpreads false
 /CropImagesToFrames true
 /ErrorControl /WarnAndContinue
 /FlattenerIgnoreSpreadOverrides false
 /IncludeGuidesGrids false
 /IncludeNonPrinting false
 /IncludeSlug false
 /Namespace [
 (Adobe)
 (InDesign)
 (4.0)
 ]
 /OmitPlacedBitmaps false
 /OmitPlacedEPS false
 /OmitPlacedPDF false
 /SimulateOverprint /Legacy
 >>
 <<
 /AddBleedMarks false
 /AddColorBars false
 /AddCropMarks false
 /AddPageInfo false
 /AddRegMarks false
 /ConvertColors /NoConversion
 /DestinationProfileName ()
 /DestinationProfileSelector /NA
 /Downsample16BitImages true
 /FlattenerPreset <<
 /PresetSelector /MediumResolution
 >>
 /FormElements false
 /GenerateStructure true
 /IncludeBookmarks false
 /IncludeHyperlinks false
 /IncludeInteractive false
 /IncludeLayers false
 /IncludeProfiles true
 /MultimediaHandling /UseObjectSettings
 /Namespace [
 (Adobe)
 (CreativeSuite)
 (2.0)
 ]
 /PDFXOutputIntentProfileSelector /NA
 /PreserveEditing true
 /UntaggedCMYKHandling /LeaveUntagged
 /UntaggedRGBHandling /LeaveUntagged
 /UseDocumentBleed false
 >>
 ]
>> setdistillerparams
<<
 /HWResolution [2400 2400]
 /PageSize [612.000 792.000]
>> setpagedevice