PermAlert Liquid Leak Detection Systems
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The document provides an overview of liquid leak detection systems offered by Permalert, including their history, technologies, and applications. Key features include pal-at cable systems and Liquidwatch probe systems that monitor for leaks using coaxial cables and probes, utilizing time domain reflectometry to identify and locate issues. The systems are designed for various environments, including data centers and semiconductor facilities, and are modular, allowing for easy expansion and integration.
PermAlert Liquid Leak Detection Systems
- 1. Liquid Leak Detection/LocationLiquid Leak Detection/Location Systems for piping, raised floors,Systems for piping, raised floors, semiconductor tools, containmentsemiconductor tools, containment piping, fuel systems and otherpiping, fuel systems and other applicationsapplications
- 2. Company ProfileCompany Profile PermAlert is part of Perma-Pipe the largestPermAlert is part of Perma-Pipe the largest prefabricated – preinsulated pipeprefabricated – preinsulated pipe manufacturer in the USmanufacturer in the US PAL-AT Leak Detection was introduced inPAL-AT Leak Detection was introduced in 1988 and was the reason for founding1988 and was the reason for founding PermAlert ESPPermAlert ESP Sales Volume of the parent corporationSales Volume of the parent corporation (MFRI) is about US $178 million with over(MFRI) is about US $178 million with over 500 employees worldwide500 employees worldwide
- 3. PAL-AT Cable Systems andPAL-AT Cable Systems and LiquidWatch Probe SystemsLiquidWatch Probe Systems PAL-AT uses coaxial cables and probes toPAL-AT uses coaxial cables and probes to monitor for liquid leakage. The system canmonitor for liquid leakage. The system can detect and locate leaks, breaks and shorts ondetect and locate leaks, breaks and shorts on the sensor cable as well as probe activations.the sensor cable as well as probe activations. LiquidWatch is a probe monitoring systemLiquidWatch is a probe monitoring system and can monitor up to 64 probes from aand can monitor up to 64 probes from a single panel. The probes are monitored forsingle panel. The probes are monitored for activation, breaks and shorts.activation, breaks and shorts.
- 4. Time Domain ReflectometryTime Domain Reflectometry PAL-ATPAL-AT TDR is a cable measuring technologyTDR is a cable measuring technology related to sonar and radar. By sendingrelated to sonar and radar. By sending energy pulses down the centerenergy pulses down the center conductor of a coaxial cable andconductor of a coaxial cable and measuring the reflected energy to themeasuring the reflected energy to the outer braid a map can be stored of theouter braid a map can be stored of the cable and monitored for change. Whencable and monitored for change. When change occurs the type of alarm and itschange occurs the type of alarm and its location is displayed on the panel.location is displayed on the panel.
- 5. TDR Trace of Dry CableTDR Trace of Dry Cable
- 6. TDR Trace with LeakTDR Trace with Leak DetectedDetected
- 7. TDR Trace of System with Wet CableTDR Trace of System with Wet Cable
- 8. TDR Trace showing Growing LeakTDR Trace showing Growing Leak
- 9. Map 3 ResponseMap 3 Response
- 10. Second Leak DetectedSecond Leak Detected
- 11. Monitoring with Liquid on the CableMonitoring with Liquid on the Cable
- 15. PAL-AT PanelsPAL-AT Panels AT20C - Monitoring up to 2,000’ (600 m) on a singleAT20C - Monitoring up to 2,000’ (600 m) on a single cablecable AT50C - Monitoring up to 5,000’ (1500 m) equivalentAT50C - Monitoring up to 5,000’ (1500 m) equivalent length on a single cablelength on a single cable AT20K - Monitoring up to 7,500’ (2500 m) equivalentAT20K - Monitoring up to 7,500’ (2500 m) equivalent length per cable with a maximum of two cableslength per cable with a maximum of two cables AT40K - Monitoring up to 5,000’ (1500m) equivalentAT40K - Monitoring up to 5,000’ (1500m) equivalent length per cable with a maximum of eight cableslength per cable with a maximum of eight cables AT80K - Monitoring up to 7,500’ (2500 m) equivalentAT80K - Monitoring up to 7,500’ (2500 m) equivalent length per cable with a maximum of eight cableslength per cable with a maximum of eight cables
- 16. Types of CableTypes of Cable PAL-ATPAL-AT AGW Gold Sensor cable for use inAGW Gold Sensor cable for use in containment piping, trenches, trayscontainment piping, trenches, trays and subfloorsand subfloors AGT Gold Sensor cable for useAGT Gold Sensor cable for use in subfloors and trays. More sensitivein subfloors and trays. More sensitive than AGWthan AGW TFH Sensor cable for detectingTFH Sensor cable for detecting hydrocarbons and solvents while ignoringhydrocarbons and solvents while ignoring waterwater TFHTFH TFHTFH
- 17. Types of ProbesTypes of Probes PAL-AT and LiquidWatchPAL-AT and LiquidWatch PHL/PWS Solid state probes forPHL/PWS Solid state probes for hydrocarbon and conductive liquidshydrocarbon and conductive liquids PSTV/PTHL/PFS Float switches forPSTV/PTHL/PFS Float switches for high/low levelhigh/low level PT10 (PAL-AT) Probe integrators andPT10 (PAL-AT) Probe integrators and PA-10 (LiquidWatch) Probe AdaptorsPA-10 (LiquidWatch) Probe Adaptors for dry contactsfor dry contacts
- 18. LiquidWatchLiquidWatch LiquidWatch has two basic panels. TheLiquidWatch has two basic panels. The LW64 is for use in normal classifiedLW64 is for use in normal classified probe locations while the LW64ISprobe locations while the LW64IS provides a UL Listed System forprovides a UL Listed System for monitoring in Class 1, Division 1 Groupsmonitoring in Class 1, Division 1 Groups C & D locations. The basic panelC & D locations. The basic panel monitors up to eight probes withmonitors up to eight probes with modules being added for additionalmodules being added for additional probe requirements.probe requirements.
- 19. ApplicationsApplications Raised Floors - Data Centers, ISPs, Clean RoomsRaised Floors - Data Centers, ISPs, Clean Rooms Telecommunication, Semiconductor, Office BldgsTelecommunication, Semiconductor, Office Bldgs PharmaceuticalPharmaceutical Piping - Containment piping, single wall piping,Piping - Containment piping, single wall piping, hydrocarbon piping, waste drainshydrocarbon piping, waste drains Trenches and Trays - Under wet benches, pipingTrenches and Trays - Under wet benches, piping and equipmentand equipment Generators, Electrical Switch Gear andGenerators, Electrical Switch Gear and Transformers for hydrocarbon leakage or waterTransformers for hydrocarbon leakage or water seepageseepage What ever needs liquid leakage detection that aWhat ever needs liquid leakage detection that a probe or sensor cable can be usedprobe or sensor cable can be used
- 23. Palcom SoftwarePalcom Software PAL-AT and LiquidWatchPAL-AT and LiquidWatch Palcom allows remote control of up toPalcom allows remote control of up to 254 panels with the ability to review254 panels with the ability to review TDR traces, review the history of eachTDR traces, review the history of each unit and to pull down a Cad drawing forunit and to pull down a Cad drawing for each system for location of leaks,each system for location of leaks, breaks, shorts or probe activation's.breaks, shorts or probe activation's.
- 24. Archive DataArchive Data POWER LOST AT 8985 ON 18/95 RESTORED AT 0853 ON 5/8 YEAR CHANGED FROM 29 TO 98 AT 0853 ON 5/8 CABLE 1 SETUP, WITH LENGTH OF 514 FEET AT 0921 ON 5/8 LEAK DETECTED IN CABLE 3 at 225 FEET AT 1157 ON 5/8 ALARM ON CABLE 3 SILENCED AT 1157 ON 5/8 CABLE 4 SETUP, WITH LENGTH OF 538 FEET AT 1208 ON 5/8 SECURITY CODE 1 ENTERED, LEVEL 250 AT 1210 ON 5/8 NEW CABLE 4 REFERENCE, STORED AS MAP 1 AT 1210 ON 5/8 CABLE 4 MONITORING ON, MAP 1 AT 1210 ON 5/8/98 CABLE 4 RETURNED TO NORMAL AT 1211 ON 5/8 SECURITY CODE 1 ENTERED, LEVEL 250 AT 1217 ON 5/8 CABLE 3 SETUP, WITH LENGTH OF 833 FEET AT 1217 ON 5/8 NEW CABLE 3 REFERENCE, STORED AS MAP 1 AT 1217 ON 5/8 CABLE 3 MONITORING ON, MAP 1 AT 1217 ON 5/8/98 CABLE 3 RETURNED TO NORMAL AT 1218 ON 5/8 SECURITY CODE 1 ENTERED, LEVEL 250 AT 1225 ON 5/8 CABLE 2 SETUP, WITH LENGTH OF 815 FEET AT 1225 ON 5/8 NEW CABLE 2 REFERENCE, STORED AS MAP 1 AT 1225 ON 5/8 CABLE 2 MONITORING ON, MAP 1 AT 1225 ON 5/8/98 CABLE 2 RETURNED TO NORMAL AT 1226 ON 5/8 SECURITY CODE 1 ENTERED, LEVEL 250 AT 1231 ON 5/8 CABLE 1 SETUP, WITH LENGTH OF 514 FEET AT 1231 ON 5/8 NEW CABLE 1 REFERENCE, STORED AS MAP 1 AT 1231 ON 5/8 CABLE 1 MONITORING ON, MAP 1 AT 1231 ON 5/8/98 CABLE 1 RETURNED TO NORMAL AT 1232 ON 5/8 **********End of Archives**********
- 25. Benefits of PermAlert’s PAL-Benefits of PermAlert’s PAL- ATAT Wet cable startupWet cable startup Multiple Leak location capabilityMultiple Leak location capability Location of BreaksLocation of Breaks Detection of Shorts versus LeaksDetection of Shorts versus Leaks Not susceptible to contamination from dirt/dust, etc.Not susceptible to contamination from dirt/dust, etc. Archive History DataArchive History Data UL Listed, FM Approved, CE Approval availableUL Listed, FM Approved, CE Approval available Class 1 Div 1 Groups C & D Sensor CircuitsClass 1 Div 1 Groups C & D Sensor Circuits Up to 8 circuits and 7,500’ (2500 m) per circuitUp to 8 circuits and 7,500’ (2500 m) per circuit Corrosion resistant sensor cablesCorrosion resistant sensor cables Different cable types on the same circuitDifferent cable types on the same circuit EPA third party testedEPA third party tested
- 26. Benefits of LiquidWatchBenefits of LiquidWatch Modular in design allowing for easyModular in design allowing for easy expansionexpansion Monitoring of probes for activation and theMonitoring of probes for activation and the leader cable for breaks and shortsleader cable for breaks and shorts History log of eventsHistory log of events UL Listed for Class 1 Div 1, Groups C & DUL Listed for Class 1 Div 1, Groups C & D locationslocations Different probe typesDifferent probe types Probe adaptor to allow interface of any dryProbe adaptor to allow interface of any dry contact probe devicecontact probe device
- 27. Questions and Answer PeriodQuestions and Answer Period
Editor's Notes
- #7: System is 180’ long and this trace shows the condition of a dry cable with no connector problems. Like sonar and radar the signal has to stabilize. Always install 50’ of jumper at the front and a minimum of 20’ at the back of the sensor string so we are monitoring the flat area of the graph for changes.
- #8: Leak detected at 60’. The dielectric change between the center conductor and outer braid (liquid displacing air) causes the echo change which causes the alarm. By measuring the time to the change we can obtain the distance to the problem.
- #9: We are now monitoring the system with the cable wet at 60’. We are looking for changes that would signify a growing leak or a new leak.
- #10: A growing leak has occurred with more cable being wetted changing the echo signature and the PAL-AT realarms.
- #11: Monitoring with wetted cable at 60’.
- #12: Alarm detected at 127’ due to liquid accumulation in the cable. This leak is detected even though wetness exists on the cable at 60’.
- #13: Monitoring with two wet locations, looking for additional changes. System can monitor effectively with 100’ of wetted cable. After that point the accuracy degrades up to 150’ wetted. After 150’ wetted the system may not monitor since our energy pulse is low voltage and may not be able to go thru the accumulated liquid.
- #14: Break alarm detected and located on the system. The panel knows that there is supposed to be 180’ of cable but is not only sensing 129’ which causes an alarm.
- #15: Short detected on the cable at 129’. Signature is opposite of a break and has a harmonic.
- #16: Point sensor activated. Looks similar to a short but the end of cable still exists and no harmonic.
- #17: Large panel selection to allow matching up to customers needs.
- #19: Probes can also be used with LiquidWatch panel. LiquidWatch can monitor up to 64 probes.
- #26: Example History data downloaded from PAL-AT unit.