Honeywell Pressuretrol Controller, Modulating, 10 psi to 300 psi

Overview: Single potentiometer; adjustable proportioning range. Features: Adjustable proportioning (throttling) range to allow selection of desired pressure control range Use with steam, air, noncombustible gases, or other fluids non-corrosive to the brass or phos-bronze (300 psi models) bellows. Pressure Sensing Element: Brass bellows, 10-300 psi models phos-bronze bellows Adjustment Means: Screws on controller case top; knurled knob for main scale setting on 10 to 300 psi (0.07 to 2.07 MPa) models Potentiometer Action: Wiper moves toward W on pressure rise, toward B on pressure fall. Potentiometer is field replaceable. Setpoint: At low pressure end of proportioning (throttling) range. Do NOT use with combustible mediums or any medium chemically harmful to phos-bronze bellows (10-300 psi models) or brass bellows (all other pressure range models).