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    Pressure Controllers & Transducers

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    PCS–Series: Anti-Corrosive Absolute and Gauge Pressure Controllers

    PCS-Series Anti-Corrosive Absolute and Gauge Pressure Controllers control absolute pressure or gauge pressure of all non-corrosive gases, select corrosive gases, and a variety of liquids.
    • Aggressive gas compatibility. Wetted materials compatible with many pure corrosive gases and most refrigerant gases, in addition to all non-corrosive gases and a variety of liquids.
    • Fast & accurate. Custom valve sizing and PID tuning ensure controllers reach pressure setpoints in milliseconds and maintain control with NIST-traceable accuracy to ±0.125% of full scale.
    • Versatile control. Immediately upon powering up, maintain absolute pressure (referenced to vacuum) or gauge pressure (referenced to local barometric pressure), with readings displayed in your choice of engineering units.
    • Easy integration. Custom process ports and electrical connectors, and your choice of EtherNet/IP, EtherCAT, DeviceNet, Profibus, PROFINET, 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
    Absolute/gauge PCS-Series performance (most products)
    • Available full scale ranges:
      • Absolute: max 0–3000 PSIA; min 0–15 PSIA
      • Gauge: max 0–3000 PSIG; min 0–5 PSIG*
    • 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 100 ms
    • Warm-up time: <1 s

    *Negative gauge pressure readings (to –15 PSIG) can also be included in gauge ranges.

    Absolute/gauge PCS-Series operating conditions
    • Compatible fluids: All non-corrosive gases, select corrosive gases, and chemically compatible liquids
    • Operating temperature: –10°C to +60°C
    • Burst pressure:
      • 3x full scale for ≤ 100 PSI devices
      • 1.5x full scale for ≥ 500 PSI devices
    Device Ranges & Full Specs

    Gauge devices are custom ranged from 5 PSIG full scale to 3,000 PSIG full scale, and absolute devices are custom ranged from 15 PSIA full scale to 3,000 PSIA full scale. Most devices have a controllable range of 0.01% to 100% of full scale (valve dependent).

    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
    • Communication protocols: Analog, RS–232, RS–485, DeviceNet, EtherCAT, EtherNet/IP, Modbus RTU or TCP/IP, PROFIBUS, PROFINET
    • Displays: Backlit monochrome or color; integrated or panel–mount
    • Process connections: NPT, SAE, AN, BSPP/G, compression, VCR, or VCO fittings
    • Wetted materials: 316L stainless steel; FFKM standard, FKM, or EPDM as needed for some gases
    • 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
    • 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 above 20 SLPM

    Note: Certain gases (including SO2, and Cl2) require PC with PCA designation.

    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 anti-corrosive gauge pressure controller
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    BrochureManualPCS-Series device specs
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