Liquid Pressure Controllers
Description
Liquid pressure controllers are devices designed to regulate the pressure of liquids within a system. They ensure that the pressure remains at a set point, preventing fluctuations that could affect the system's performance or safety.
Working Principle
Liquid pressure controllers operate by sensing the pressure of the liquid and adjusting the flow to maintain the desired pressure level. They typically use feedback loops to automatically adjust the pressure. When the pressure drops below the set point, the controller allows more liquid to flow through, increasing the pressure. Conversely, when the pressure exceeds the set point, the controller reduces the flow, decreasing the pressure. This closed-loop system ensures precise control over the liquid pressure, making these controllers essential for maintaining system stability and efficiency.
Applications
Liquid pressure controllers are used in various industrial processes where precise pressure control is critical. For example, they are employed in chemical processing plants to maintain the correct pressure in reaction vessels, ensuring optimal reaction conditions. They are also used in water treatment facilities to regulate the pressure in filtration systems, preventing damage to the equipment and ensuring consistent water quality.
Advantages over other Pressure Controllers
Liquid pressure controllers offer several advantages over other types of pressure controllers. They provide more precise control over liquid pressure, which is crucial in applications where even slight pressure variations can lead to significant issues. Additionally, they are designed to handle the specific challenges associated with liquid systems, such as changes in viscosity and temperature, which can affect pressure regulation.
Limitations
One limitation of liquid pressure controllers is that they may not be suitable for systems with extremely high-pressure requirements, as they are typically designed for moderate pressure ranges. Additionally, they may require regular maintenance to ensure accurate performance, as components can wear over time due to the constant flow of liquid.
Considerations
When selecting a liquid pressure controller, several factors should be considered. Initial costs can vary depending on the complexity and capabilities of the controller. Operating expenses may include energy consumption and maintenance costs, which can be influenced by the controller's efficiency and durability. Accuracy is another critical factor, as precise pressure control is essential for many applications. Finally, replacement and maintenance costs should be considered, as regular servicing may be necessary to maintain optimal performance and extend the controller's lifespan.
from HORIBA Instruments, Inc.
The GR-300 Series can control gases used to cool the back side of wafers that are fixed in position by an electrostatic chuck system. The stability and accuracy of the GR-300 makes it ideal for controlling the flow of Helium and Argon in wafer cooling systems. Pressure control with more stability... [See More]
- Media: Liquid
- Standards and Compliance: RoHS
- Form Factor: Stand-Alone
from PMC Engineering LLC
The DPM is a multipurpose, easy to use digital dual-input process meter ideal for level, flow rate, temperature transmitter, or pressure transmitter applications. Various math functions may be applied to the inputs including addition, difference, absolute difference, average, weighted average,... [See More]
- Media: Liquid
- Features: Multi-Function; Datalogger; Rate Indication/ Control; Totalizing (Length or Roll Diameter) Indication/ Control
- Control: Limit
- Form Factor: Chassis
from Florite International, Inc.
The 900 Series is an economic one loop microcomputer-based instrument incorporating user selectable digital and analog inputs, as well as analog and relay outputs. Other 900 Series features include .005% high accuracy PID, batch, and dose control functions. Additionally, the 900 Series encompasses... [See More]
- Media: Liquid; Solid; Gas
- Control: Limit; Linear; Feedforward; PID
- Controller Type: Laboratory
- Features: PLC; Multi-Function; Datalogger; Is a Chart Recorder; Rate Indication/ Control; Totalizing (Length or Roll Diameter) Indication/ Control
from Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ ER3100 Series is the ER3000 controller and 44-4000 Series pressure reducing regulator integrated together. Inlet pressures are up to 4500 PSIG [310 bar] with two different outlet ranges of 400 PSIG and 900 PSIG [27.6 and 64 bar]. The ER3100 Series may be ordered with a Cv=0.7 or a... [See More]
- Media: Liquid; Gas
- Form Factor: Chassis
- Control: Linear; PID
- Interface: Computer Programmable
from DME Company
Compact and self contained. Provides Digital Display Readout of Cavity Pressure. Provides Amplified Output of Scaled Cavity Pressure Signal when setup correctly with Pin Dia. ( 0-5Vdc Output = 0 to 20,000 PSI ). User Selectable Analog Amplified Output: Default 0-5Vdc, user dip switch selectable... [See More]
- Media: Liquid
- Control: Limit
- Controller Type: Hydraulic Controller
- Features: Is a Chart Recorder (optional feature); Rate Indication/ Control
from Time Mark Corporation
The Model 661 Alarm Control, part of the 600 series line of instrumentation controls, is designed to monitor and maintain measurable applications such as liquid levels, temperature, pressure, flow, etc. A user-provided 4-20mA current loop represents the measurable application, and output connections... [See More]
- Media: Liquid
- Features: Rate Indication/ Control
- Control: Limit
- Type: Current Loop (Transmitter) Excitation
from Bronkhorst USA
EL-PRESS Digital Electronic Pressure Meters / Controllers. 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... [See More]
- Media: Liquid; Gas
- Features: PC-Based
- Control: Limit
- Interface: Computer Programmable (optional feature)
from Cleaver-Brooks
Pumps are turned on or off as required to maintain a pressure set point within a user-configurable deadband. The PCS140e.1 can control from 2 to 4 pumps for on-off control (no VSD control). Data is available via Modbus RTU communications or logged to an optional Micro SD card. Features: Pump... [See More]
- Media: Liquid; Steam
- Form Factor: Stand-Alone
- Features: Datalogger
- Interface: Switches; Digital Front Panel
from PMC Engineering LLC
The PM is a multipurpose, easy to use digital process meter ideal for level, flow rate, temperature, or pressure transmitter applications. It accepts current and voltage signals. Three of the front panel buttons can be custom programmed for a specific operation. Dual Scale for Level Applications -... [See More]
- Media: Liquid
- Features: Multi-Function; Datalogger; Rate Indication/ Control; Totalizing (Length or Roll Diameter) Indication/ Control
- Control: Limit
- Form Factor: Chassis
from Florite International, Inc.
The Florite Model 990X is an innovative, technically superior, high quality and reliable microcomputer-based controller suitable for any commercial or industrial application. The instruments user configurable screw-terminal channels enable any mix of up to eight inputs and or outputs regardless of... [See More]
- Media: Liquid; Solid; Gas
- Control: Limit; Linear; Feedforward; PID
- Controller Type: Laboratory
- Features: PLC; Multi-Function; Datalogger; Is a Chart Recorder; Rate Indication/ Control; Totalizing (Length or Roll Diameter) Indication/ Control
from Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
Easy to automate, Easy to use, Easy on you!. Get repeatable, accurate and robust pressure control results, easy to use software with remote capabilities and detailed data acquisition. The ER5000 Series is a microprocessor based PID (Proportional, Integral, Derivative). controller that brings precise... [See More]
- Media: Liquid; Gas
- Form Factor: Chassis
- Control: Linear; PID
- Interface: Computer Programmable; Web
from DME Company
Hydraulic (oil) valve gate controls provide reliable, accurate and effective control. Solid-state timers and relays have a life rating of 10 million cycles. User-friendly auto-reset function. Individual test buttons for each zone provide precise time control to .01 second. Compact design takes up... [See More]
- Media: Liquid
- Features: Rate Indication/ Control
- Control: Limit
- Form Factor: Stand-Alone
from Bronkhorst USA
EL-PRESS Digital Electronic Pressure Meters / Controllers. 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... [See More]
- Media: Liquid; Gas
- Features: PC-Based
- Control: Limit
- Interface: Computer Programmable (optional feature)