ImpactSubsea ISFMD Installation & Operation Manual Download Page 21

IMPACT SUBSEA

 

INNOVATIVE UNDERWATER PRODUCTS

 

 

 

 

        

www.impactsubsea.com

   

       

  

Document No: 

0000.1913 | 

Version No: 

1.2 | 23

rd

 April 2020

 

20

 

 

For example, if an acoustic pulse takes 0.001 seconds to return to the ISA500 after being sent, 
we can calculate its round-trip travel distance as:

 

 

      Distance

 

=

 Speed x Time

 

=

 1,500 x 0.001

 

=

 1.5m

 

 

 

 

Therefore, the total distance the sound has travelled is 1.5m (journey to the member 

 

back wall + journey back from the member back wall).

 

 

 

To calculate the distance measured, we simply half this value.  

 

i.e. the range to the other side of the member is 0.75m.

 

Summary of Contents for ISFMD

Page 1: ...a Ltd Company Number SC498003 Registered in Scotland Registered Office Unit 10 Castle Street Castle Road Industrial Estate Ellon AB41 9FR UK E info impactsubsea co uk W www impactsubsea com ISFMD Floo...

Page 2: ...d System 8 4 2 ROV Deployed System 9 4 2 1 Connector Pin Out 9 4 2 2 Power 10 4 2 3 Serial Interface 10 4 2 4 RS232 Wiring 10 4 2 5 RS485 Wiring 11 4 2 6 Establishing Communications 11 5 0 Software In...

Page 3: ...st level of accuracy and reliability in readings All readings are shown visually in the supplied seaView software package Each reading is accompanied with an energy and correlation level providing the...

Page 4: ...T SUBSEA INNOVATIVE UNDERWATER PRODUCTS www impactsubsea com Document No 0000 1913 Version No 1 2 23rd April 2020 3 2 0 Specification 2 1 Probe Overview 2 2 Dimensions 2 2 1 Probe All dimensions are i...

Page 5: ...IMPACT SUBSEA INNOVATIVE UNDERWATER PRODUCTS www impactsubsea com Document No 0000 1913 Version No 1 2 23rd April 2020 4 2 2 2 Probe Mount Top Down View Side View Front View All dimensions are in mm...

Page 6: ...Temperature Signalling Monotonic Accuracy 0 5 Pulse Length Automatic Resolution 0 1 Heading Accuracy 1 Resolution 0 1 2 4 Communications Power Physical Communications Power Physical Digital RS232 RS4...

Page 7: ...The combination of these enable the probe to achieve a high level of sensitivity making it an ideal FMD sensor probe 3 2 Probe Protective Holder A robust acetal holder complete with stainless steel 3...

Page 8: ...A power supply is provided to connect to the PWR port A USB lead is provided to connect to the USB port of the Topside Interface Box and the desktop PC Laptop The topside interface box communicates wi...

Page 9: ...grease Push Cable Reel Probe Connector through protective holder Push Cable Reel Probe Connector onto Probe connector Secure in place with red locking collar hand tighten only Step 3 Slide Probe Into...

Page 10: ...ISA500 is fitted with a SubConn MCBH8M SS connector as standard This will mate to a SubConn MCIL8F connector cable assembly 4 2 1 Connector Pin Out The standard ISA500 connector pin out is provided b...

Page 11: ...ISA500 serial communications protocol can be set to either RS232 or RS485 For use with the ISFMD Topside Interface box the unit must be configured to RS485 communications The RS232 and RS485 interface...

Page 12: ...Establishing Communications The default serial settings for FMD are RS485 9600 N81 If the communications require to be changed to RS232 or an alteration in baud rate is required this can be conducted...

Page 13: ...onnector it is important to observe the following Always apply grease before mating Molykote 44 Medium grease must be used Disconnect by pulling straight not at an angle Do not pull on the cable and a...

Page 14: ...un the software please do the following Plug the Impact Subsea supplied USB stick into computer USB port Copy seaView and FMD License from the USB stick to the Windows desktop Run seaView Click on the...

Page 15: ...save the settings and automatically configure the acoustic settings of the ISA500 Probe to suit the member to be tested It is critical that a correct member diameter in meters is entered the system w...

Page 16: ...lude in the final report The distance along the member pipe that the reading was taken in meters can be entered at this point Step 5 Repeat the above process at all points on the member that you wish...

Page 17: ...1 which represents a quality factor of the returned echo A value of 1 would represent a return echo of perfection with negligible noise and distortion The correlation value can be used alone as a trus...

Page 18: ...dow extends 10 of the member diameter to account for variations in speed of sound through the member wall and internal medium As with any acoustic based FMD system when an acoustic pulse is transmitte...

Page 19: ...uld be rinsed in fresh water after each use to remove salt deposits If required a light detergent such as that used to clean household dishes can be used DO NOT USE SOLVENTS TO CLEAN THE UNIT Followin...

Page 20: ...are the ideal method to use for measuring distance underwater The ISA500 operates by emitting an acoustic pulse into the member to be tested This pulse travels through the water the wall of the member...

Page 21: ...return to the ISA500 after being sent we can calculate its round trip travel distance as Distance Speed x Time 1 500 x 0 001 1 5m Therefore the total distance the sound has travelled is 1 5m journey t...

Page 22: ...o suit each The FMD application will configure the ISA500 acoustic settings pulse length min max range etc to suit each member under test There is no requirement to manually adjust the acoustic settin...

Page 23: ...smitted into the member and remove the small reading Please note the transmit level should only be reduced to a level to remove noise not to a level which would prevent detection of the flooded member...

Page 24: ...orrect the problems Impact Subsea Ltd will either replace or repair the Product at no charge using new or refurbished replacement parts Replacement or repair is at the discretion of Impact Subsea Ltd...

Page 25: ...support request and will ensure a prompt response When contacting our Support team please provide the following details of the ISFMD system Serial Number ISA500 Topbox Reel etc Firmware version of IS...

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