Model 15 Positive Relay0 pages

Model 15 Positive Relay Features

The Model 15 is sensitive to 1/4" WaterColumn variation which permits use in precision applications. Օ A Balanced Supply Valve minimizes the effects of supply pressure variation. Aspirator Tube minimizes downstream pressure droop under flow conditions. Օ Flow of up to 40 SCFM with 100 psig Supply at 20 psig Setpoint allows use in applications requiring high flow capacity. A Separate Control Chamber isolates the diaphragm from the main flow, eliminating hunting and buzzing. Օ Mounting Bracket available >

Operating Principles

The Model 15 Positive Bias Relayis designed for applications that
require an output pressure that is
the sum of a controlled input signal plus a fixed bias. The Model 15 Positive Bias Relay providesan output pressure that represents the input
signal pressure plus a preset bias.
Mathematically Po = Ps + K where Po is
output pressure, Ps is signal pressure and
K is the spring constant. This unit, availablein several bias range configurationsto meeta variety of output requirements, offers
excellent sensitivity and high flow capacity
in a small volume.The unit is well suited to a variety of controlapplications, including range shifting, and
tension control, and pressure control from aremote location. >
Model15

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