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Reverse osmosis (RO) process technology is deployed in many industries. This process uses membrane separation which is one of the most economical means to remove suspended solids from feed water. Listed below are examples of some typical RO applications:
The RO function is accomplished by differential pressure across an array of filters. High pressure is applied to the raw water side of the filter that creates sufficient differential pressure across the filter enabling flow of the filtered water to the low-pressure side of the system.
In this semiconductor factory they produce their own deionized water. A cellulose acetate membrane removes dissolved solids from the filtered raw water. Differential pressure values are the key factor determining filter maintenance intervention for cleaning or replacement of filter components.
Application requirements:
EJA110E medium range unit was chosen to cover the measurement range 0 to 30 kPa (0 to 120 inH2O). The client focused on 0.055 % accuracy of capsule span, superior long-term stability (≤± 0.1 % @ 16 MPa, 2300 psi) and vibration tolerance.
【Static pressure transient test data】
Model: EJA110E M capsule with set range -2 to 2 kPa
Applied static pressure change: 500 kPa in 0.1 Sec
With sudden static pressure changes, the output from EJA110E responds stably and keeps zero every time.
DPharp EJA110E exhibits exceptional stability. Trial results from an EJA110E on this RO process that was evaluated over 6 months presented no zero drift or shift. Maintenance crews were relieved with no maintenance intervention or action required during the evaluation period. The EJA110E consistently delivers accurate and stable measurement of process conditions under real world conditions, resulting in better process efficiency and less maintenance downtime.
Traditional-mount Differential Pressure Transmitter designed for Draft Range applications based on the EJA-E Series.
Flange-mounted Differential Pressure Transmitter designed for Liquid-level applications based on the EJA-E series.
Yokogawa introduces new release of the Fluidless series – EJAC60E Hygienic Adapter System (Fluidless Type).
This system composes of replaceable adapters(16 adapters in total) with hygienic function of pressure detection.
Suitable for various kind of process including hygienic connection.
Traditional-mount Differential Pressure Transmitter designed for Draft Range applications based on the EJX-A Series.
Flanged-mounted Differential Pressure Transmitter designed for Liquid-level applications based on the EJX-A Series.
This transmitter precisely measures differential pressure, static pressure, and process temperature; then uses these values in a high-perfomance on-board flow computer to deliver fully compensated Mass Flow.
Designed specifically for high static pressure applications, this transmitter precisely measures differential pressure, static pressure, and process temperature; then uses these values in a high-perfomance on-board flow computer to deliver fully compensated Mass Flow.
Digital Remote Sensor (DRS) Transmitter connects two pressure sensors, master (high-pressure side) and slave (low-pressure side) in a remote location, with DRS dedicated communication cable to measure differential pressure.
Direct Mounted Diaphragm Seal System consists of gauge pressure transmitter with single direct mount diaphragm seal.
Diaphragm Seal System consists of differential pressure or gauge pressure transmitter with one or two diaphragm seal.
Direct Mounted Diaphragm Seal System consists of differential pressure transmitter with single direct mount diaphragm seal.
Absolute Pressure Diaphragm Seal System consists of absolute pressure transmitter with single diaphragm seal.
Absolute Pressure transmitters compare a pressure relative to Absolute pressure. Absolute pressure is always a positive value.
Diaphragm Seal System can be used to measure liquid, gas, or steam flow as well as liquid level, density, and pressure.
Differential Pressure (DP) is defined as the difference between two pressures. Differential Pressure Transmitters use a reference point called the low-side pressure and compare it to the high-side pressure. Ports in the instrument are marked high-side and low-side.
Draft Pressure transmitters are a unique type of differential transmitter that is designed to measure small differences in very low static pressure environments.
Hygienic Pressure Transmitters are designed to fulfil the requirements of hygienic and pharmaceutical application.
Accurate level readings are essential to the safe, reliable, profitable operation of your plant. Liquid Level transmitters measure differential pressure to infer the level in a vessel.
Using Bernoulli's equation, Differential Pressure transmitters can be used to infer the flow of fluid through a pipe.
There are several technologies on the market to measure mass flow. One is the Multi-variable Pressure Transmitter.
A Multi-Sensing transmitter combines transmitters for Differential Pressure, Gauge Pressure, and Temperature into one field instrument.
The accurate and stable measurement of process pressure with Yokogawa Pressure Transmitters supports the safe, reliable, and profitable operation of your plant.
Contact a Yokogawa Expert to learn how we can help you solve your challenges.