Yokogawa introduces EJXC40A digital pressure transmitter | Automation.com

Yokogawa introduces EJXC40A digital pressure transmitter

October 172016
Yokogawa introduces EJXC40A digital pressure transmitter

October 14, 2016 - Yokogawa Electric Corporation announced the release of the EJXC40A digital remote sensor, a DPharp EJX series differential pressure transmitter. Equipped with two pressure sensors that are connected with an electric cable, the EJXC40A offers performance in the measurement of liquid levels in large tanks and large differential pressure with high-pressure fluids.

Differential pressure/pressure transmitters are widely used in the oil, petrochemical, and chemical industries in applications such as oil and gas wells. By measuring the difference in pressure at two points in a tank or pipe, these transmitters can calculate the level, flowrate, and density of liquids, gases, and steam. In applications where a tank liquid or gas or a pipe fluid cannot be introduced into the pressure-receiving unit (diaphragm) of a transmitter, diaphragm-sealed differential pressure transmitters are used. A transmitter of this type is connected to two separate pressure-receiving units by a capillary tube that is filled with silicone oil or some other fluid. Although such transmitters are capable of precisely measuring high-pressure fluids with a high resolution, they are not suitable for use with large tanks because of limitations in the allowable length of the capillary tubes. In addition, they are not ideal for fine differential pressure measurement because the fluids in the capillary tubes are susceptible to changes in the ambient temperature.

Product Features

The EJXC40A consists of two separate pressure sensors that are connected to each other by an electric cable. Based on the difference in pressures measured by each sensor, the EJXC40A determines the liquid level, flow rate, and pressure of liquids, gases, and steam. The EJXC40A is ideal for the following applications.

Liquid level measurements in large tanks
The electric cable connecting the two pressure sensors can be up to 45 meters in length, enabling the measurement of liquid levels with very large tanks and tall distillation columns.

Fine differential pressure measurement
Since the two pressure sensors are connected only by an electric cable, their measurements are not influenced by changes in the ambient temperature. There is no need to correct for changes in temperature when performing fine differential pressure measurements with gas tanks and other applications. This ensures stable measurements.

Measurement with high-pressure fluids having a high differential pressure
As the two pressure sensors can be set to measure different pressure ranges, the EJXC40A digital remote sensor can measure high differential pressures of up to 70 MPa, something that is difficult to do with a single sensor unit.

About Yokogawa Corporation of America

Yokogawa Corporation of America is a provider of Industrial Automation and Test and Measurement solutions. Combining superior technology with engineering, system integration, project management, and maintenance services, Yokogawa delivers field-proven operational efficiency, safety, and reliability. Yokogawa Corporation of America is headquartered in Sugar Land, TX, and is the North American Division of Yokogawa Electric Corporation's global network of 25 manufacturing facilities and 4 regional project engineering centers.

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