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Bronkhorst - Model IN-PRESS P-802CI -Process Pressure Controllers (PPCs)
Bronkhorst model P-802CI Process Pressure Controllers (PPCs) are suited for precise pressure control with closed volumes, i.e. with one fluid connection. This PPC model is suited for pressure ranges between 17,5…350 mbar and 3,2…64 bar absolute or gauge. The instrument comprises a diaphragm type piezo-resistive pressure sensor, a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for pressure control by means of two integrated control valves. This dual valve construction is a compact, economical alternative to configurations where forward pressure controllers are combined with separate bleed ports and relief valves. It is considered as a great advantage that the relief valve does not vent to the atmosphere. Furthermore the system can be set for either fast or smooth controlled (de)pressurization. The IN-PRESS model is of rugged design (IP65) for use in industrial environments.
IN-PRESS series are equipped with a digital pc-board, offering high accuracy, excellent temperature stability and fast response. The main digital pc-board contains all of the general functions needed for measurement and control. In addition to the standard RS232 output the instruments also offer analog I/O. As an option, an on-board interface can be mounted to provide CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or FLOW-BUS protocols.
Measurement / control system
- Pressure ranges : min. 17,5 ... 350 mbar
- max. 3,2 ... 64 bar
- Accuracy (incl. linearity and hysteresis) : ± 0,5 % FS
- Repeatability : < 0,25 % RD
- Pressure rangeability : 1:20 (with flow range 1:50)
- Response time (sensor) : 2 msec
- Operating temperature : -10 … +70 °C
- Temperature sensitivity : 0,1% FS/°C
- Leak integrity, outboard : tested < 2 x 10-9 mbar l/s He
- Attitude sensitivity : max. error at 90° off horizontal < 0,3 mbar
- Warm-up time : negligible
Mechanical parts
- Material (wetted parts) : stainless steel 316L or comparable
- Process connections : compression type or face seal (VCR/VCO) couplings
- Seals : standard: FKM/Viton®;
- options: EPDM, FFKM/Kalrez®, FDA and USP Class VI approved compounds
- Weight : 2,8 kg
- Ingress protection : IP65
Electrical connection
- Analog/RS232 : 8 DIN (male);
- PROFIBUS DP : bus: 5-pin M12 (female);
- power: 8 DIN (male);
- CANopen® / DeviceNet™ : 5-pin M12-connector (male);
- FLOW-BUS/Modbus-RTU/ASCII : 5-pin M12 (male)
- Modbus TCP / EtherNet/IP / POWERLINK : bus: 2 x 5-pin M12 (female) (in/out);
- power: 8 DIN (male);
- EtherCAT®/ PROFINET : bus: 2 x 5-pin M12 (female) (in/out); power: 8 DIN (male)