IP2032-SUB2-QS, Rev AA
Mobrey Submersion Shield
for the MSP900SH and MSP900FH
Quick Start Guide
May 2012
Quick Start Guide
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About this guide
This guide provides instructions for fitting a Mobrey Submersion Shield
(part number MSP-SUB2) which is an optional accessory for the Mobrey
MSP900SH Level and MSP900FH Flow transmitters.
It does not provide installation instructions for the transmitters (or their optional
accessories). Refer to the MSP900SH or MSP900FH installation manuals for
detailed instructions.
Product data sheets, reference manuals, and quick-start guides are available
electronically on the Mobrey brand pages at www.delta-mobrey.com.
Figure 1. Example application with a submersion shield fitted
May 2012
A. Mobrey MSP900SH Level or MSP900FH Flow Transmitter
B. Mobrey Submersion Shield (part number MSP-SUB2)
C. Mobrey Head Verification Device (part number MSP-HVD)
D. Conduit (not supplied)
E. Mobrey Conduit Adaptor Boss,
1-in. NPT female to
1-in. BSP female to M20 x 1.5 female (part number 03100-1005-0001) or
1
/2-in. NPT female (part number 03100-1005-0002)
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Quick Start Guide
Mobrey MSP900SH/MSP900FH Submersion Shield
The Mobrey Submersion Shield (MSP-SUB2) is recommended for installations,
e.g. wet wells, where a MSP900SH/MSP900FH transmitter may be at risk of being
flooded.
It is easily fitted over the transducer cup, but requires the transmitter to be kept
firmly vertical so that flood water causes an air pocket and keeps the transmitter
face clear. The transmitter can then function normally when the flood water
subsides.
Figure 1 on page 2 shows an example application with the submersion shield
already fitted to a Mobrey MSP900SH/MSP900FH transmitter, which is then
mounted on a Mobrey Head Verification Device.
Figure 2. Features of the Mobrey Submersion Shield
A. PVC Submersion Shield (Medium Grey)
B. Silicone O-ring (Red)
C. Fluoroelastomer (FKM) O-ring (Dark Grey)
D. Foam (PVC/NITRILE)
Failure to follow these installation guidelines could result in death or serious injury
Make sure only qualified personnel perform the installation
Use the equipment only as specified in this manual. Failure to do so may impair the protection
Electrical shock could cause death or serious injury
Make sure the main power to the transmitter is off and the lines to any other external power
provided by the equipment
source are disconnected or not powered whilst installing the submersion shield
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Quick Start Guide
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May 2012
Fitting the submersion shield
Step 1: Check the transmitter mounting
The transmitter mounting must ensure that the transmitter is firmly kept in place,
and ideally at 90 degrees to the liquid surface. This is essential for an air pocket to
be formed at the base of the shield as flood water rises and passes it.
Step 2: Lubricate both O-rings before fitting the shield
A suitable lubricant such as Dow Corning MS4 silicone grease may be used. If this
is not available, a suitable water-based lubricant or liquid detergent may be used.
Step 3: Fit the submersion shield
Follow this procedure:
1. Align the shield opening with the transducer cup, ensuring that the red O-ring
is above the grey O-ring (Figure 3, left image).
2. Hold the transmitter and firmly push the shield upwards onto the transducer
cup, until the red O-ring is on the transducer cup (Figure 3, middle image).
3. Continue pushing the shield upwards firmly until the red O-ring engages with
the recess on the transducer cup (
Figure 3. Visual help for fitting the submersion shield
Figure 3, right image).
A. Transducer Cup
B. Recess on Transducer Cup
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Quick Start Guide
Removing the submersion shield
This is only necessary for occasional cleaning or inspection in the event of
contamination from flood water.
Follow this procedure:
1. Holding the transmitter, pull the shield downwards firmly until the red O-ring
is released from the recess on the transducer cup (Figure 4).
2. Continue to pull the shield downwards until it is free from the transducer cup.
3. Inspect the O-rings inside the shield for any signs of damage, and replace if
necessary. Contact Delta Mobrey for how to get replacements.
Figure 4. Visual help for removing the submersion shield
A. Transducer Cup
B. Recess on Transducer Cup
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Quick Start Guide
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Quick Start Guide
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Quick Start Guide
IP2032-SUB2-QS, Rev AA
May 2012
Head Office
Delta Mobrey Limited
Riverside Business Park,
DogfludWay,
Farnham, GU9 7SS
+44 (0)1252 729140
+44 (0)1252 729168
mobrey@delta-mobrey.com
, UK
Linkedin.com/company/delta-mobrey-ltd
Twitter.com/DeltaMobreyUK
Facebook.com/DeltaMobreyUK
andard Terms and Conditions of Sale can be found
St
at: www.delta-mobrey.com
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