The ClampOn DSP PIG Detector controls and monitors when the PIG is passing the
point of installation. Providing reliable information about the passage of the PIG
increases pipeline integrity and produces cost savings.
How it works
The ClampOn subsea sensors are designed to meet these requirements:
Designed for a service life of more than 25 years
Independent redundant electronics
Independent high and atmosphere pressure chambers
Electron beam (EB) welding of the chamber against external pressure (no rubber
or mechanical seals)
Glass-metal penetrator as a barrier between high and atmosphere pressure chambers
Outstanding sensitivity, repeatability, accuracy and signal/noise ratio thanks
to Digital Signal Processing (DSP-06)
Advantages
The ClampOn DSP Pig Detector, available in topside and subsea versions, is a
more compact and user-friendly unit than other instruments on the market. It is
easier to install in the field and easier to move to other locations.
DSP involves complete digitalization of the system and the elimination of analogue
filters. This technology is increasingly used in a wide range of “smart electronic
devices” as it provides sufficient capacity to perform advanced signal-processing
tasks in real time. Such devices include medical diagnostic instruments, radar
and sonar systems and mobile phones. ClampOn is the only manufacturer of pig detection
systems to use DSP, which enables the sensor to operate in several frequency ranges
simultaneously, eliminating the danger of the detector being triggered by noise
sources other than pigs.
Integration
All our instruments are equipped with both digital and analogue interface, and
comply with all common protocols. Our instruments can easily be integrated into
any existing or new control system. A computer with our software is often used
in-between our instruments and the control system. The computer will be used for
sand calculation by using the RAW data from our sand detectors and flow data from
third party systems, then output calculated sand rate to the control system. All
recorded data will also be stored for analyzing and calibration purposes. We always
recommend using the digital interface due to following benefits:
Two way communication enabling instrument software update and configuration
Full signal range resolution
All sensor data can be transmitted
No signal loss
Specifications
SUBSEA PIG DETECTOR
Principle of operation
Passive acoustics, intelligent sensor
Type of Pig
All types
Minimum Pig Speed
0.03 meter per second
Method of installation
Clamped to pipe surface, non-intrusive
Sensor electronics
Intelligent DSP electronics with signal processing
Interface options
All sensors can be supplied with: Digital RS485 (ASCII, binary, ModBus RTU),
4-20mA (active/passive), Relay, reset
Options for ATEX approved sensors: local light/reset
Options for subsea: CANBus, Profibus
Other functions available: Vibration monitoring, sensor selftest
Two-way communication
Yes
Software upgrading
Yes
Pipe Surface Temperature
-40 to 225 °C (-40 to 437 °F)
High temperature fixture
500 °C (932 °F)
Flow regimes
Oil, gas, water, multiphase
Diagnostic features
Self test, vibration, 0.25Hz - 1000Hz ±5G
COMPUTER
Minimum hardware
Pentium III (or equivalent) with 512 MB RAM
Software requirements (for Clampon Software)
Windows 2000/2003/XP/Vista
Input
Serial, Modbus, ethernet, OPC
Signal output
Serial, Modbus, ethernet, 4-20mA, Relay, Client Server
ClampOn - the leading supplier of topside and subsea Ultrasonic Intelligent Sensors
ClampOn has since the beginning in 1994 grown to be the largest supplier of passive
ultrasonic systems for sand/particle monitoring to the international oil and gas
sector.
All products supplied by ClampOn, particle monitor, PIG detector, corrosion-erosion
monitor, vibration monitor and leak monitor are based on the same, well proven
technology platform. Both the topside and the subsea instruments incorporate Digital
Signal Processing (DSP), complete digitalization eliminating analogue filters,
circuits and amplifiers.
The ClampOn Ultrasonic Intelligent Sensor processes all data in the sensor itself
(patented principle), thus enabling the instrument to discriminate between sand-generated
and flow-generated noise. This is of importance to the user since changes in flow
rates and the gas/oil ratio will not affect the performance of the system.
A good signal to noise (s/n) ratio is vital for quality measurements of this
sort, and ClampOn’s sensors are the very best in this respect. With the new version,
the external noise has been completely eliminated.
The sensors has memory capacity for storing up to 60 days of data, and can even
be reprogrammed between being a sand monitor, a PIG detector or a leak monitor.
ClampOn Ultrasonic Intelligent Sensor
• Non-invasive
• Digital Signal Processing (DSP)
• Complete digitalisation
• No analogue filters, circuits or amplifiers
• Two-way communication
• Real-time measurement
• Easy to relocate
• Contains no moving parts
• Can be mounted in hostile environments
• Incorporates sensitive, intelligent, intrinsically safe sensors
• Can be upgraded by software download
• Can store up to 60 days of measurement data within the sensor itself
• Self-testing capabilities
• Built-in temperature sensor and accelerometer (optional)
• User-friendly software for Windows™ XP/Vista/2000-2008
• Versatile - one and the same sensor can perform particle detection, PIG detection,
spectrum analysis and more, all available in the software package of your choice.
