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Type 650 Positive Bias Relay

Type 650 Positive Bias Relay

Product catalog summary

Overview: The Type 650 Positive Bias Relay is a signal-operated regulator designed to increase flow capacity and provide adjustable bias pressure. It is commonly used for applications requiring increased flow capacity or remote pressure control.

Key Features:

High Flow Capacity: Allows flows up to 50 SCFM with minimal pressure drop.
Four Bias Ranges: Adjustable from 0-15 psi to 2-150 psi.
High Relief Capacity: Features a large relief valve with a 15 SCFM relief capacity.
Balanced Supply Valve: The rolling diaphragm design ensures insensitivity to supply pressure variations.
Accurate Pressure Conversion: High sensitivity for accurate signal to output conversion without lag.

Principle of Operation: The relay operates by balancing the force from the input signal pressure and bias spring against the output pressure. An increase in signal pressure or bias spring force opens the supply valve, increasing output pressure until equilibrium is reached.

Specifications:

Flow Capacity: 50 SCFM at 100 psig supply with 20 psig output.
Exhaust Capacity: 15 SCFM with downstream pressure 5 psig above set pressure.
Sensitivity: 1/4" water column.
Effect of Supply Pressure Change: 0.1 psi for a 50 psig change.
Maximum Supply Pressure: 250 psig.
Maximum Signal and Output Pressure: 150 psig.
Temperature Limits: -40°F to 160°F.
Weight: 1.75 lbs.
Mounting Options: Pipe, panel, or bracket.
Materials: Diecast aluminum body, stainless steel, brass, plated steel, acetal internal components, nitrile elastomer and polyester fabric diaphragm, ABS plastic knob.

Ordering Information: The relay is available in different models based on port size and bias range. Options include tapped exhaust, tamperproof cover, and negative bias. Accessories such as mounting brackets and gauges are also available.

Catalog excerpts

CA T650 Spec Sheet 1/5/05 12:22 PM Page 2 > Flow Capacity 50 SCFM (76.5 m3/hr) at 100 psig (700 kPa) supply > 2.25MountingBracket (optional) 57.2 with 20 psig (140 kPa) output Exhaust Capacity 15 SCFM (25.5 m3/hr) Downstream 5 psig (35 kPa) above set pressure Sensitivity 1/4"(3.2 mm) water column Effect of Supply Pressure ChangeMaximum Supply 0.1 psi for a 50 psig change > 3.0076.2 PressureMaximum Signal 250 psig (1750 kPa) PressureMaximum Output 150 psig (1034 kPa) > 2.2557.21/4 - 20 UNC x 1/2" deep mounting holes PressureAmbient 150 psig (1034 kPa) Temperature Limits -40F to 160аF (-40C to...

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