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FS-521Air Flow SwitchThe FS-521 paddle switch is intended to monitorair flow within a duct and provides a switchedoutput on detection of either a specific airvelocity or flow failure.FEATURES■■Adjustable switching point■■Lid-mounting screws providetamper proofingSPECIFICATIONOperating temp: Ambient –20 to +70°C (–4 to +158°F) max.Media –20 to +120°C (–4 to +248°F) max.Materials: Paddle Stainless steelRod BrassEnclosure ABS flame retardant (type VO)Switch rating: 15(8)A SPDT @ 230VacProtection:IP65Dimensions: Paddle 80 x 175mm, (3.15 x 6.89”)Housing 113.5 x 65 x 62mm (4.47 x 2.56 x 2.44”)Weight:300g (0.66 lb)Part codeFS-521Description80 x 175mm (3.15 x 6.89”) Paddle SwitchVolume Price Breaks are applicableUnit Prices (5+)FS-521Please see price listData sheet: FS-521.pdfFS-541Liquid Flow SwitchesThe FS-541 series of paddle switches areintended to monitor liquid flow within pipesand provides a VFC output on detection ofeither a specific flow rate or flow failure.They screw directly into a 1” BSPT boss.FEATURES■■Adjustable switching point■■Stainless steel wetted parts for aggressivemedia (FS-541S)SPECIFICATIONOperating temp: –40 to +120°C (–40 to +248°F) (max.)Materials: Paddle Stainless steelRod Brass (S/S for FS-541S)Enclosure ABS flame retardantSwitch rating: 15(8)A SPDT @ 24-250Vac, VFCPipe suitability: 1” to 8”Protection:IP65Dimensions: Housing 113.5 x 65 x 62mm (4.47 x 2.56 x 2.44”)Paddles 28.5, 54.5, 83.5 and 161.5mm(1.12, 2.15, 3.29 and 6.36”)Weight:300g (0.66 lb)Part codeFS-541FS-541SDescription1” BSPT Flow Switch1” BSPT Flow Switch (stainless steel paddle)Volume Price Breaks are applicableUnit Prices (5+)FS-541Please see price listData sheet: FS-541.pdfGL-COGas Leak Alarm SystemsA range of stand-alone gas leak alarmSystems for use in commercial / industrialgas installations to provide safety alarm andshutdown facilities on detection of gas leakage.FEATURES■■1, 2 & 3 channel options■ ■ Audio and visual alarms■ ■ Adjustable alarm sensitivity■ ■ Relay output for gas shut-off valves■ ■ Relay output for remote alarms■ ■ Auto or manual reset selectable■ ■ Self-diagnosis fault systemSPECIFICATIONPower supply: 230Vac ±10% @ 50/60Hz or 12V ±10%Relay output(s): GL-CO-RFG361 SPDT, 250V @ 5(1)AGL-CO-RFG65x 2 x SPDT, 250V @ 5(1)AMaterials: Base NylonCoverABSAmbient: Storage temp. –25 to +60°C (–13 to +140°F)Operating temp. 0 to 45°C (32 to 113°F)Relative humidity Class F DIN 40040Protection:IP40Weight: GL-CO-RFG361 250g (0.55 lb)GL-CO-RFG65x 600g (1.32 lb)SENSOR TYPESNatural Gas Sensor: GL-CO-SRS150Propane Sensor:GL-CO-SRS250Carbon Monoxide Sensor: GL-CO-SRS350Part code DescriptionControllers (DIN-rail mount)GL-CO-RFG361 1-channel, 1 x SPDTGL-CO-RFG651 1-channel, 2 x SPDTGL-CO-RFG652 2-channel, 2 x SPDTGL-CO-RFG653 3-channel, 2 x SPDTOptionsGL-CO-RFG-FMK3 Panel door mounting kit for RFG361GL-CO-RFG-FMK6 Panel door mounting kit for RFG65xGL-CO-RFG-WMK6 Wall mounting kit for RFG65xSensorsGL-CO-SRS150 Combustibles Sensor (natural gas)GL-CO-SRS250 Propane/LPG SensorGL-CO-SRS350 Carbon Monoxide SensorData sheets: GL-CO-RFG361.pdf ∙ GL-CO-RFG65x.pdfAir & Water Flow Air Quality & Gas Detection Controllers Input / Output Modules Water & Energy Metering Peripherals12www.sontay.com · Email sales@sontay.com