2341-521 Robertshaw Receiver Controller

Receiver-Controller, Direct-Acting, pre-mounted on base for field use
For pneumatic control systems — to provide proportional control of variables such as Temperature, Relative Humidity, Pressure, Differential Pressure (between water lines), Differential Static Pressure (of air), Air Velocity (in ducts), Enthalpy, etc., as sensed by remote pneumatic transmitters. Other pneumatic inputs may be used for special applications.

• May be used either as: a. 1,2, or 3-input Receiver-Controller, b. Adjustable Ratio-Relay, c. High-Accuracy Reversing Relay , or d. For other special applications.
• Provides Proportional plus Integral (PI) Control when used as Receiver-Controller along with an R500 (2351-001) Integral Relay.
• Compact Size.
• Wide Range of Throttling-Range & Authority Adjustments.
• High Sensitivity, Linearity and Stability.
• Requires no disassembly or parts rearrangement of any kind.