PCD–Series: Dual Valve Differential Pressure Controllers Description：

Brochure Product Manual

PCD-Series Dual Valve Differential Pressure Controllersuse two proportional valves to maintain differential pressure between any two points in processes flowing gases within dead-ended volumes.

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.

Efficient, 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. Additionally, the second proportional valve exhausts excess pressure only when needed to maintain your setpoint, eliminating the need to continuously bleed costly gas.

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.

Technical Specifications：

Differential PCD-Series performance (most products)

Available full scale ranges: 0.07 PSID (2 inH?OD) 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 PCD-Series operating conditions

Compatible gases: All non-corrosive gases

Operating temperature: –10°C to +60°C

Maximum common mode pressure:

≤ 100 PSID models: 200 PSIG

500 PSID models: 750 PSIG

Burst pressure: 3x full scale