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KMC Controls RCC-1010 Adjustable Ratio Relay

Adjustable Ratio Relay

The RCC-1010 is an adjustable ratio relay designed for sequencing pneumatic control components in HVAC systems. It can reduce the rate at which a pneumatic device responds to a control signal. This ratio may be adjusted on a percentage basis from zero on up to 1 to 1. This feature can be used to reduce instability of a final control device by effectively increasing the proportional band of the circuit.

The output of the device can be biased in a positive direction to increase the output of the relay. This allows the ratio operation to begin at a specific pressure, such as the start point of a pneumatic actuator.

Air Consumption: 28.8 scim (7.85 mL/s)
Supply Pressure:
Operating: 20 psig (138 kPa)
Maximum: 30 psig (207 kPa)
Connections: 3/16" (5 mm) nipples for 1/4"
(6 mm) OD polyethylene tubing
Material: Flame retardant plastic
Temperature Limits: Operating: 40 to 120° F (4 to 49° C)
Shipping –40 to 140° F (–40 to 60° C)

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