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    Pressure Controllers & Transducers

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    PC–Series: Differential Pressure Controllers

    PC-Series Differential Pressure Controllers control the differential pressure between any two points in your process.
    • Versatile control. Maintain differential pressure between any two points or keep one port open to atmosphere and control gauge pressure, with readings displayed in your choice of engineering units.
    • Fast & accurate. Reach pressure setpoints in milliseconds and maintain control for all non-corrosive gases, with NIST-traceable accuracy to ±0.125% of full scale.
    • Easy integration. Custom process ports and electrical connectors, and your choice of EtherNet/IP, EtherCAT, DeviceNet, Profibus, Modbus (RTU and TCP/IP), or serial communications for easy integration into your industrial process.

    Request a quote

    Accessories included with purchase

    Device specs and customization options

    Quick Specs
    Differential PC-Series performance (most products)
    • Available full-scale ranges: 2 inH₂O to 500 PSID
    • Steady state control range: 0.01% – 100% of full scale
    • Standard accuracy calibration, NIST-traceable: ±0.25% of full scale
    • Optional high-accuracy calibration, NIST-traceable: ±0.125% of full scale
    • Repeatability: 0.08% of full scale
    • Typical control response time: as fast as 30 ms
    • Warm-up time: <1 s
    Differential PC-Series operating conditions
    • Compatible gases: All non-corrosive gases
    • Operating temperature: –10°C to +60°C
    • Max common mode pressure: 200 PSIG (750 PSIG for 500 PSID models)
    • Burst pressure: 3x full scale (1.5x full scale for 500 PSID devices)
    Device Ranges & Full Specs

    Devices are custom ranged from 2 inH₂O full scale to 500 PSID full scale with controllable ranges of 0.01% to 100% of full scale.

    For a comprehensive device guide, read the pressure controller operating manual.

    Device Features
    Included with each device
    • User changeable units of measurement: Change the unit of measurement for pressure from our extensive list of engineering units.
    • Monochrome backlit LCD with integrated touchpad: Easily read measurements using the backlit display and control configurations with the user-friendly integrated touchpad.
    • User adjustable setpoint ramping & limits: Configurable ramp rates allow the process variable to be controlled as fast or as slow as desired, and configurable setpoint limits protect processes from inadvertent setpoint changes.
    • Valve close override and valve open override: Utilize alarms to quickly vent your system or stop all flow as needed.
    Request at time of purchase | Additional cost
    • Optional integrated potentiometer control: Use the integrated potentiometer to adjust setpoints with the simple turn of a knob.
    Device Customization Options
    Build and performance options
    • Communications protocols: Analog, RS–232, RS–485, DeviceNet, EtherCAT, EtherNet/IP, Modbus RTU or TCP/IP, PROFIBUS
    • Displays: Backlit monochrome or color; integrated or panel–mount
    • Process connections: NPT, SAE, AN, BSPP/G, compression, VCR, or VCO fittings
    • Elastomers: Viton, FFKM, EPDM, Silicone
    • Calibration: High-accuracy; custom calibration points
    Visit the device customization page
    Valve options & PID tuning

    Your pressure controller may be customized with one of the following valving options to ensure optimal performance under your expected process conditions.

    • PC – small proportional control valve for flow ranges of 20 slpm and below
    • PC with PCA designation – high-performance proportional control valve used for applications with higher pressures
    • PCP – small proportional control valve with the largest orifice (not available for corrosive configurations)
    • PCH – hammerhead configuration, which pairs two small valves working side-by-side as one valve
    • PCR – nearly frictionless large Rolamite proportional valve for flow rates of 50 slpm and above

    Custom PID valve tuning ensures maximum performance for your specific process conditions.

    Learn about valve sizing and PID tuning options
    Optional Accessories
    Accessories | Sold separately
    • Process port fittings and filters
    • Power supplies
    • Communications cables and conversion cables
    • BB3 and BB9 multi-drop breakout boxes
    Visit the accessories page

    Not exactly what you’re looking for?

    Contact an applications engineer

    Learn about diverse pressure control applications in our knowledge base
    Photo of Alicat PCS-Series differential pressure controller
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    BrochureManualPC-Series device specs
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