Bronkhorst

IN-PRESS P-802CI

Process Pressure Controller, Industrial Style

  • Dual valve pressure control (inlet/relief)
  • For absolute or gauge pressure
  • High accuracy and repeatability
  • Rugged, weatherproof housing (IP65, dust and waterproof)
  • On-board PID controller for pressure control
  • Analog, RS232 and fieldbus communication
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IN-PRESSP-802CI

Process Pressure Controller, Industrial Style

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 DeviceNet™, PROFIBUS DP, Modbus or FLOW-BUS protocols.


Technical specifications

Measurement / control system
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 couplings
Seals standard: Viton®; options: EPDM, Kalrez® (FFKM)
Weight 2,8 kg
Ingress protection (housing) IP65
Electrical properties
Power supply +15…24 Vdc
Max. power consumption Supply
15 V
24 V
at voltage I/O
290 mA
200 mA
at current I/O
320 mA
215 mA
PROFIBUS DP add 53 mA (15 V supply) or 30 mA (24 V supply)
DeviceNet™ add 48 mA (24 V supply)
Analog output/command 0...5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communication standard: RS232;
options: PROFIBUS DP, DeviceNet™, Modbus RTU or ASCII, FLOW-BUS
Electrical connection
Analog/RS232 8 DIN (male);
PROFIBUS DP bus: 5-pin M12 (female);
power: 8 DIN (male);
Devicenet™ 5-pin M12-connector (male);
FLOW-BUS/Modbus-RTU/ASCII 5-pin M12 (male)

Note: The measuring cell of the pressure sensore is separated from the external pressure by a thin, sensitive stainless steel diaphragm, and the sealed off cavity between diaphragm and cell is filled with oil. Since the standard oil filling is flammable, Bronkhorst advises to take precautions when oxygen or any other explosive fluid is used.

Technical specifications subject to change without notice.

For dimensional drawings and hook-up diagrams please visit the productpage on our website

Downloads

Brochures
IN-PRESS PPC Datasheet

Manuals
General manual digital instruments
Operating instructions digital instruments

Hook-up diagrams
Analog IO - RS232
DeviceNet
FLOW-BUS
Modbus-RTU
PROFIBUS DP

Dimensional drawing
P-802CI_P-812CI_P-822CI