Download a datasheet for the AO3 & EA conductivity ... - PVL Ltd

Pressure Vacuum Level Flow Temperature Displays!!!!!!!!!!!!!Liquid Level switch - conductiveFEATURESUp to 4 x 1m long electrodesPolypropylene electrode holder3/4" BSP threadAtmospheric pressure and 60° maxDin rail mounted controllerControls 2 x levels or alarmsSuitable for conductive liquidsVery precise level detectionProtection against dry runningPrevents Pump overrunSimple 'Low Cost' installationWide selection of electrodesIntrinsically Safe Option (P5/BAR)TYPE E14 + P4Type P4Type E14Up to 4electrodesmax. length 1mDatafax - 1547TECHNICAL FEATURES FOR E14 ELECTRODE HOLDERAccommodates up to four 1/8" diameter electrodes. Moulded in polypropylene with a screwon cap. Mounting thread is 3/4" B.S.P. and a lock nut is provided. Screwed conduit entry is20mm. All electrodes are plastic coated to prevent tracking. For applications whereexcessive moisture is present, cables may be connected at works and the terminals potted.Two spacers are included to separate the electrodes (Pt. No. 216).For use at normal atmospheric pressure and temperatures between -20°C and + 60°C. Notsuitable for aggressive liquids which attack polypropylene.Page 1 of 2Technical Data- Type E14MaterialSS TypeTitanium316Electrode MaterialS.S.S.S.TitaniumDia. before Coating1/8" (3.2mm)1/8" (3.2mm)Plastic Coating TypeEpoxy Coated ThermomeltEpoxy Coated FusionBondedEpoxy Coated ThermomeltMax. Length1.0m0.97mPRESSURE-VACUUM-LEVEL LTDUnit 9, Lexden Lodge Industrial Estate, Jarvis Brook,Crowborough, East Sussex, TN6 2EG U.K.Tel: +44(0)1892 66 44 99 Fax: +44(0)1892 66 36 90Web: www.pvl.co.uk Email: info@pvl.co.ukColourBlackGreenBlueE & O E © Pressure-Vacuum- Level LtdIssue -A/03/01

Pressure Vacuum Level Flow Temperature DisplaysLiquid Level switch - conductivePRINCIPLE OF OPERATIONRelies on the conducting properties ofliquids to complete an electrical circuitbetween the electrode and the metaltank. For non-metal or coated tanks, theearth path may be through the pumppipework. Alternatively, an earthelectrode extending below the lowestactive electrode may be fitted. Normallymounted vertically, pressure tightelectrodes are available for side entry ifrequired. A low voltage A.C. signal isused on the electrodes to preventelectrolysis.TECHNICAL DATA FOR P4 ControllerTechnical Data Type P4 - Conductivity Level ControllerSupplyVoltage110v or 230v 50/60HzAlso 24v or 48v 50/60HzType P4TYPE E14 + P4S upply Tolerance +10% to -20%Type E14Up to 4electrodesmax. length 1mDatafax - 1547Page 2 of 2P ower Consumption 6 vA max.Input(s)Upto 2 level electrodes plusreturn remotely mountedearthAmbientTemperature-10C to + 60CS ensitivit y Adjustable 100 ohms to approx.18,000 ohmsHigher values up to 500,00 ohmsavail.S witching Differential 5% of sensitivity setting (e.g.less than 50 ohms at 1000ohms sensitivity)RelayOutputDouble pole changeover voltagefree contacts. Contacts rated 4A@ 250v A.C. resistiveIndiactionRed L.E.D showing relayenergised. Green L.E.D.'s (2)Failsafe mode and power statusConnections11-pin DIN rail/surface mountin gbase (Optional extra) (8-pin forP3)IntrinsicSafetyP5/BAR version when used withzener diode barrier forms anINTRINSICALLY SAFE system(Zone 0)PRESSURE-VACUUM-LEVEL LTDUnit 9, Lexden Lodge Industrial Estate, Jarvis Brook,Crowborough, East Sussex, TN6 2EG U.K.Tel: +44(0)1892 66 44 99 Fax: +44(0)1892 66 36 90Web: www.pvl.co.uk Email: info@pvl.co.ukDistance ofController toelectrodesNominally 100m but greaterdistances using standard cablepossibleE & O E © Pressure-Vacuum- Level LtdIssue -A/03/01