Transcription of Relays - Cofely Delta Controls
1 RelaysSeries 61 Booster & Benefits Force-balance principle produces a proportional outputfor pneumatic circuit flexibility Built-in stability needle valve on the Moore 61H minimizespiping needsImproved valve stroking speed for better process control Epoxy powder coating provides improved corrosion resistance Accurate 1:1 signal relay provides pneumatic circuitdesign flexibilityDescriptionThe Series 61 Booster Relays reproduce pneumatic signalsin a 1:1 ratio for applications where input isolation or increasedflow capacity are required. Various models are available tomeet a wide range of ServiceModel 61H High-Capacity Booster Relay(See Section on Valve Instrumentation)The Model 61H High-Capacity Booster Relay was designedto improve the stroking speed of large diaphragm such, it incorporates a stabilizing bypass needle valvebetween the input and output, eliminating the need for anexternally piped 61VH High-Capacity Booster Relay(See Section on Valve Instrumentation)The Model 61VH High-Capacity Booster Relay was designedfor use on control valve actuators that require very faststroking speeds.
2 As such, it incorporates a stabilizing bypassneedle valve between the input and output, eliminating theneed for an externally piped ControlModel 61L Moderate Accuracy Booster RelayThe Model 61L Moderate Accuracy Booster Relay combinesmoderate accuracy with a moderate capacity ( scfm output at 9 psi). Like the Model 61H relay,this instrument is used primarily in straight forward valve-booster 61F High Accuracy Booster RelayThe Model 61F High Accuracy Booster Relay via thesensitive preformed diaphragms in this relay provides greateraccuracy in 1:1 transmission. Its output capacity is about1/4 that of the Model 61L. As such, it is suitable for use inmeasuring 61FE Booster RelayThe Model 61FE Booster Relay is similar to the Model 61F;however, it also includes a 1/8" NPT connection for thoseapplications where a tapped exhaust is 610F Booster RelayThe Model 610F Booster Relay is similar to the Model 61F;however, it also includes a zero-adjustment screw formaximum pressure, acting upon the effective area of the upperdiaphragm, produces a force that is opposed by the outputpressure exerted upon the effective area of the lowerdiaphragm.
3 The opposing forces are in a direct 1:1 such, any increase in the input pressure will depress thediaphragm assembly and open the pilot valve to admit asufficient supply of air to the output. This re-balances theinput pressure. A decrease in input pressure will cause thediaphragm assembly to lift off the exhaust port, which reducesthe output and re-balances the 61 Booster dataModel61H61L61F & 61FE610 FNormal Input & Output Pressure3-153-153-153-15 Maximum Input Pressure100 psi100 psi50 psi50 psiMaximum Supply Pressure100 psi100 psi50 psi50 psiOverload Protection to any Connection150 psi150 psi100 psi100 psiAccuracy of 1:1 Ratio5%2% Error-----3%1% Temperature Limits-40 to 180 FFlow scfmSpecifications1) These performance figures are based on a 3-15 psi ) The Model 610F incorporates a zero adjustment (+1/2 psi) for maximum ) Flow causes output pressure to droop 1 psi at 9 psi output with 20 psi to the Section on Vale Instrumentation for specifications and installation drawings for the 61H and 61VH valve boosters.
4 Model AB61F, 61FE2-13/164-3/16 61L2-5/84 610F3-5/324-17/32 InchesMillimetersInchesMillimeters9
