EL-PRESS
Digital Electronic Pressure Meters / Controllers

General

The EL-PRESS series digital electronic pressure transducers and controllers for gases and liquids have a well-proven compact thru-flow design. The instruments include a diaphragm type piezo-resistive pressure sensor for pressure measurement/control from:

lowest ranges 2 ... 100 mbar absolute, gauge or differential
up to highest ranges 8 ... 400 bar absolute / gauge or 0,3 ... 15 bar dif.

The control valve design distinguishes itself from competitive designs in its truly modular construction and it can be field replaced or changed by the user without any adjustment. The standard valve is normally closed and is available up to Kv-values of 6.0. Normally opened valves can also be supplied.

"Multibus" Digital Pressure Meters/Controllers

Bronkhorst developed their digital instruments according to the flexible "multibus" concept, due to which the instruments can be equipped with on-board interface board with DeviceNet™, PROFIBUS DP, PROFINET, Modbus RTU/ASCII, EtherCAT^® or FLOW-BUS protocol. More information about digital "multibus" communication.

NEW: EL-PRESS P-800 Process Pressure Controller

The P-800 series is suited for precise pressure control inside closed compartments or systems, or for highly accurate control of dome-loaded pressure regulators. The instruments comprise 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.

Pressure ranges from 17,5...350 mbar up to 10...200 bar

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 continuously vent (bleed) to the atmosphere..

For more information see: Datasheet of EL-PRESS Series P-800

Features
Applications
Ranges
Documentation

Features

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

Applications

Gas and liquid chromatography
Fermenter pressure control (Biotechnology)
Vapour pressure control in MOCVD processes (bubbler systems)
Protective gas pressure control in extrusion moulding processes

Models and ranges

Instrument / Model type	Lowest range	Highest range
Pressure transmitters P-502C P-512C P-522C P-532C	2 ... 100 mbar 1,28 ... 64 bar 2 ... 100 bar 4 ... 200 bar	1,28 ... 64 bar 2 ... 100 bar 4 ... 200 bar 8 ... 400 bar
Differential pressure transmitters P-506C	2 ... 100 mbar	0,3 ... 15 bar
Forward pressure controllers (P₂-control) P-602C / P-602CV P-612C / P-612CV	5 ... 100 mbar 3,2 ... 64 bar	3,2 ... 64 bar 5 ... 100 bar
Backward pressure controllers (P₁-control) P-702C / P-702CV P-712C / P-712CV	20 ... 100 mbar 12,8 ... 64 bar	12,8 ... 64 bar 20 ... 100 bar
Process Pressure Controller (Dual Valve) P-802CV P-812CV P-822CV	17,5 ... 350 mbar 3,2 ... 64 bar 5 ... 100 bar	3,2 ... 64 bar 5 ... 100 bar 10 ... 200 bar

High pressure control (up to 400 bar): use pressure transmitter with separate control valve.

Sensor codes, ranges and maximum pressure

(for sensors integrated in EL-PRESS instruments)

Sensor code	Pressure ranges (Full scale values; intermediate ranges available)	Max. pressure
Absolute pressure 350A 1K1A 6K0A 21KA M10A M40A	100 ... 350 mbara 0,35 ... 1,1 bara 1,1 ... 6 bara 6 ... 21 bara 20 ... 100 bara 100 ... 400 bara	1,0 bara 3,1 bara 10,5 bara 62 bara 200 bara 500 bara
Relative pressure 350R 1K1R 6K0R 21KR	100 ... 350 mbarg 0,35 ... 1,1 barg 1,1 ... 6 barg 6 ... 21 barg	1,0 barg 3,1 barg 10,5 barg 62 barg
Differential pressure 300D 1K0D 4K0D 15KD	100 ... 300 mbard 0,3 ... 1 bard 1 ... 4 bard 4 ... 15 bard	2,5 bard 4 bard 7 bard 30 bard