Abrasion-resistant transducer for hostile pressure

Edited by the Engineeringtalk editorial team Dec 25, 2003

The GE LPX 7000 series of flush diaphragm pressure transmitters is ideal for use in hostile conditions.

The GE LPX 7000 series of flush diaphragm pressure transmitters is ideal for use in hostile conditions, where conventional devices cannot accurately or reliably perform with abrasive process media and cleaning processes, pressure shock, condensation and other severe environmental conditions.

Typical applications include pressure monitoring in sludge, tar, coal slurry, food processing and tank level monitoring of liquids and beverages, chemicals, residues, cement and pulp/paper processes.

Performance of the GE LPX7000 transmitter is assured by the combination of an innovative oil-free, low displacement inductive pressure element and rugged yet highly adaptable packaging.

The heat-treated Inconel X750 diaphragm requires no isolation fluid and moves typically just 0.2mm, enhancing long term mechanical reliability.

It is thicker than conventional flush diaphragm devices, which also ensures a substantially longer life when used in abrasive processes.

A long neck design allows the flush diaphragm to be located remotely from the electronics, allowing service at process temperatures up to 250C as standard and even 450C by can be accommodated using a custom version.

The GE LPX7000 also provides customers with a flexible asset management solution when planning sensor requirements.

It allows 4:1 user rangeability on standard ranges from 50mbar to 35bar with a wide choice of pressure units.

The two-wire 4-20mA output can be set bidirectional, eg to cover negative pressure/vacuum up to the positive range value required, and the 4mA zero can also be elevated (eg 4-20mA reps 1.5 to 10bar) for tare value/offset process measurements.

For ease of installation and maintenance, the wide choice of industry standard process connections includes Tri-Clamp, DIN and Varivent, PMC M44, 2in BSPT with welding nipple/plug and saddle mount options.

The LPX 7000 also operates from a standard two-wire loop supply between 12 and 30V DC and a choice of two electrical connections is provided as standard.

The DIN A connector version is sealed/weatherproof to IP65, and the 0.5NPT conduit entry version is supplied with integral cable and IP67 rated.

Product weight is from just 900g depending on mechanical configuration.