Bronkhorst - Model EL-PRESS P-502C -Electonic Pressure Transducers (EPTs)
Bronkhorst model P-502C Electonic Pressure Transducers (EPTs) are suited for precise measurement of pressure ranges between 2…100 mbar and 1,28…64 bar absolute or between 0,7...35 mbar and 1,28...64 bar gauge. The EPT has a well-proven compact thru-flow design and includes a diaphragm type piezo-resistive pressure sensor, a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional pressure control by means of a separately mounted control valve. EL-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.
- Thru-flow design
- Compact arrangement
- Stable control, even at varying process volumes
- High pressure capability up to 400 bar
- Metal sealed and/or down-ported versions available
- High accuracy and repeatability
- Gas and liquid chromatography
- Fermenter pressure control (Biotechnology)
- Vapour pressure control in MOCVD processes (bubbler systems)
- Protective gas pressure control in extrusion moulding processes
Measurement / control system
- Accuracy (incl. linearity and hysteresis) : standard: ± 0,5 % FS
- Repeatability : < 0,1 % RD
- Pressure rangeability :
- 1:50 for pressure meter;
- 1 : 20 for P2-control;
- 1 : 5 for P1-control
- 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 : 0,4 kg
- Ingress protection : IP40
Electrical connection
- Analog/RS232 : 9-pin D-connector (male);
- PROFIBUS DP : bus: 9-pin D-connector (female);
- power: 9-pin D-connector (male);
- CANopen® / DeviceNet™ : 5-pin M12-connector (male);
- FLOW-BUS/Modbus-RTU/ASCII : RJ45 modular jack
- Modbus TCP / EtherNet/IP / POWERLINK : 2 x RJ45 modular jack (in/out);
- EtherCAT®/ PROFINET : 2 x RJ45 modular jack (in/out);