YOKOGAWA 2302-32-VLE-2 electronic mixer

YOKOGAWA 2302-32-VLE-2 electronic mixer

Product Overview and Positioning

YOKOGAWA 2302-32-VLE-2 is a high-performance electronic mixer developed by Yokogawa Electric in Japan. Its core positioning is as a key measurement and signal processing equipment in industrial automation control systems, mainly responsible for accurate acquisition of multiple types of physical quantities on site, signal mixing processing, and standard signal output tasks. Its core value lies in the ability to integrate multi-channel input signal processing, achieve high-precision measurement and signal conversion of process parameters such as pressure and liquid level, and provide stable and reliable process data support for DCS systems such as Yokogawa CENTUM VP and other industrial control systems. It is one of the important equipment for process monitoring and precise control in process industry scenarios.

This device adopts an industrial grade robust design and is compatible with mainstream industrial control architectures such as Yokogawa N-IO system. It can work together with Yokogawa series I/O modules and communication modules, and is widely used in industrial scenarios such as petrochemicals, energy, metallurgy, which require strict measurement accuracy and environmental adaptability. It has good compatibility and operational reliability. The product is produced in Indonesia and follows the technical standards of Yokogawa Electric's century old measurement and control field, providing core guarantees for the stable operation of industrial processes.

Core product features

1. High precision measurement and signal processing capabilities

The 2302-32-VLE-2 electronic mixer has excellent measurement accuracy, with a core measurement accuracy of 0.2%, and can accurately capture subtle changes in on-site process parameters. The device integrates high-performance signal processing units, supports mixed processing of multiple types of input signals, and can integrate and optimize signals according to industrial scene requirements. At the same time, it is equipped with an external zero point continuous adjustment function, which can adjust the resolution to 0.01% of the measuring range, and the zero point can be freely raised or suppressed under the premise that the high and low range values are within the capsule measurement range, further ensuring the accuracy of the measurement data.

2. Comprehensive explosion-proof and protective design

To adapt to complex and hazardous industrial site environments, this equipment has complete explosion-proof and protective performance. Compliant with the IEC 60079 series explosion-proof standards, with IECEx certification, the explosion-proof level reaches Ex db IIC T6/T5 Gb, Ex tb IIIC T70 ℃/T90 ℃ Db, and can be safely applied in gas explosion hazardous environments (T6 level environmental temperature range -40 ℃ to 75 ℃, T5 level -40 ℃ to 80 ℃) and dust explosion hazardous environments (T70 ℃ level -30 ℃ to 65 ℃, T90 ℃ level -30 ℃ to 80 ℃). The protection level of the equipment casing reaches IP66/IP67, with excellent dust and water resistance, which can effectively resist the erosion of dust and water vapor in industrial sites.

3. Flexible parameter configuration and status monitoring

The device supports rich parameter configuration functions, and the damping time constant can be flexibly set in 9 incremental gears ranging from 0.2 to 64 seconds. The default factory setting is 2 seconds, which can be adjusted according to the dynamic characteristics of the on-site process to ensure the stability of signal output. Equipped with optional LCD digital indicators, it facilitates on-site operation and maintenance personnel to visually view measurement data and equipment status. At the same time, it supports parameter configuration and data reading through communication devices such as BT200, providing convenience for remote operation and maintenance. The device is equipped with a built-in label board (made of JIS SUS 304 material) that can store up to 16 alphanumeric characters of label information for easy device management and traceability.

4. High reliability and wide environmental adaptability

The equipment adopts a cast aluminum alloy amplifier shell, which is baked with polyurethane resin on the surface. The cover plate is frosted white (Munsell 2.5 Y 8.4/1.2), and the main body is deep-sea moss green (Munsell 0.6 Y 3.1/2.0), with good corrosion and impact resistance. High quality materials are selected for the contact medium components, and the flange material of the cover plate is JIS SUS316 (the other side is exposed to the atmosphere is JIS SUS304). The material of the membrane sealing component can be selected according to the model suffix code to ensure its service life in harsh medium environments. The equipment has undergone rigorous environmental reliability testing and can operate stably in complex industrial environments such as wide temperature, high humidity, and high dust.

5. Standardized installation and system compatibility

The device supports multiple standardized installation methods, including horizontal or vertical installation of 2-inch pipes, equipped with dedicated installation brackets, and easy installation operation. The electrical connection adopts 1/2 NPT internal thread and M20 internal thread interface (some models are G1/2 internal thread), suitable for cables with an outer diameter of 8.5 to 11 millimeters, which can achieve fast and reliable connection with on-site cables and control systems. This device can be used as a supporting measuring device for the I/O unit of the Yokogawa N-IO system, working in conjunction with adapter boards and other components. It supports the connection of I/O modules with single or dual redundancy configurations, improving the overall reliability of the system.

Detailed technical parameters

1. Core electrical and measurement parameters

-Measurement accuracy: 0.2% (capsule A, B type);

-Environmental temperature impact: The total deviation of zero drift meets relevant standards when the range is lower than the preferred value, with a deviation of 1.1% for every 50 ℃ temperature change;

-Damping time constant: The sum of the time constants of the amplifier component and the capsule component with membrane sealing. The amplifier component can be set to 0.2-64 seconds (9 gears), and the capsule component (3-meter capillary tube, A-class filling liquid, room temperature) is about 0.4 seconds;

-Zero point adjustment: continuously adjustable, with a resolution of 0.01% range, the adjustment range can be freely adjusted or suppressed within the capsule measurement range of high and low range values;

-Output mode: default linear output, adjustable through configuration;

-Display mode: default linear display, optional LCD digital indicator;

-Communication interface: supports connection to communication devices such as BT200, used for parameter configuration and data reading;

-Power supply voltage and load resistance: There is an adaptive relationship between the power supply voltage E (DC) and the external load resistance R. Specific reference can be made to the equipment characteristic curve to ensure stable operation within the adaptive range.

2. Physical and environmental parameters

-Shell material: The amplifier shell is made of cast aluminum alloy and coated with polyurethane resin baking;

-Contact medium material: The flange of the cover plate is JIS SUS316 (the other side is exposed to the atmosphere is JIS SUS304), and the material of the membrane and contact medium components is determined by the suffix of the model;

-Capillary tube and filling fluid: Capillary tube material JIS SUS316, protective tube JIS SUS304, with PVC sheath (PVC maximum working temperature 100 ℃), filling fluid type selected according to model code;

-Weight: 10.2kg (including EJ438W JIS 10K flange and mounting bracket);

-Protection level: IP66/IP67;

-Explosion proof rating: Ex db IIC T6/T5 Gb, Ex tb IIIC T70 ℃/T90 ℃ Db;

-Working temperature: Gas environment T6 grade -40 ℃ to 75 ℃, T5 grade -40 ℃ to 80 ℃; Dust environment T70 ℃ level -30 ℃ to 65 ℃, T90 ℃ level -30 ℃ to 80 ℃; Some models of TIIS certified versions operate at temperatures ranging from -20 ℃ to 60 ℃;

-Installation method: 2-inch pipeline installed horizontally/vertically, equipped with installation brackets.

3. Compliance and Certification

The equipment complies with multiple international and regional standards, including EMC related AS/NZS CISPR 11, GS 01 C 20 J 03-00 E (April 2006) standards, explosion-proof related IEC 60079-0:2011, IEC 60079-1:2014-06, IEC 60079-31:2013 standards, and has IECEx KEM 07.0044 certification and TIIS explosion-proof certification (Ex ds IIC T6 X JF3). The product provides original factory warranty to protect users' rights and interests.

Installation and maintenance precautions

1. Installation specifications

-Installation qualification: Installation, wiring, and maintenance work must be carried out by engineers or skilled technicians with professional qualifications. Non professionals are strictly prohibited from operating, especially in hazardous explosive environments, and explosion-proof operation specifications must be strictly followed;

-Installation location: It needs to be installed within the designated area according to the requirements of the explosion hazard zone classification; Avoid installation near sources of severe vibration, impact, and strong electromagnetic interference, and stay away from corrosive gases and high-temperature radiation sources; Ensure that the installation location is well ventilated, facilitating equipment heat dissipation and later maintenance;

-Installation operation: According to the requirements of the equipment installation manual, use a dedicated bracket to complete the pipeline installation, ensuring a firm installation and avoiding the transmission of pipeline vibration to the equipment; During the installation process, pay attention to protecting the equipment casing and interfaces to avoid damage caused by collisions;

-Wiring requirements: Before wiring, the power supply of the equipment and related systems must be disconnected to ensure safe operation; Strictly follow the electrical connection specifications, select cables with an appropriate outer diameter (8.5-11mm), and correctly connect the input and output signal lines; The cable shielding layer needs to be reliably grounded at one end to reduce electromagnetic interference; After the wiring of explosion-proof equipment is completed, it is necessary to ensure that the terminal cover is securely fastened and meets the explosion-proof sealing requirements;

-Grounding requirements: The equipment should be equipped with grounding terminals and reliably connected to protective grounding. The grounding resistance should comply with relevant standards to improve anti-interference performance and electrical safety, especially in explosive hazardous environments where poor grounding may pose safety risks.

2. Daily maintenance and fault diagnosis

-Status monitoring: Regularly check the operating status and measurement data of the equipment through LCD indicators (if equipped) or BT200 communication devices, check the status of the equipment indicator lights (if any), and confirm whether the equipment is working properly; Observe whether the equipment casing is damaged or corroded, and whether the wiring terminals are loose or oxidized;

-Regular inspection: Regularly clean the dust and debris on the surface of the equipment, and keep the shell clean; Check the firmness of the installation bracket and pipeline connection, and promptly tighten loose parts; Check the cable connection status to ensure there is no damage or aging phenomenon; For explosion-proof equipment, regularly check the integrity of sealing components to ensure effective explosion-proof performance;

-Calibration and maintenance: The equipment needs to be preheated (recommended 10-15 minutes) before being put into use, and calibration should be carried out after the performance is stable; Regularly follow calibration procedures and use standard calibration equipment to verify measurement accuracy, ensuring accurate measurement data; During the calibration process, the zero deviation can be adjusted through the external zero adjustment function;

-Fault handling: If there is measurement data distortion or signal abnormality, first check whether the wiring is loose or short circuited, and confirm whether the power supply voltage and load resistance are within the appropriate range; If the problem is still not resolved, the device fault information can be read through the communication device, or the damping time constant and other parameter settings can be checked for reasonableness; In explosive hazardous environments, it is strictly prohibited to dismantle equipment without authorization. The equipment must be moved to a safe area for troubleshooting; If it is determined that the equipment is damaged, it is necessary to replace it with the original equipment of the same model, and then recalibrate and debug it.

Application Fields and Typical Scenarios

The YOKOGAWA 2302-32-VLE-2 electronic mixer, with its high-precision measurement, comprehensive explosion-proof protection design, and wide environmental adaptability, is widely used in process monitoring and control systems of various process industries, especially suitable for process parameter measurement scenarios in hazardous explosive environments. Its main application areas include:

1. Petrochemical industry

Used to measure key process parameters such as pressure and liquid level of reaction vessels and pipelines in hazardous explosive environments such as petroleum refining equipment and chemical synthesis production lines; By precise signal processing and standard signal output, reliable data is provided for the DCS system to support precise control and safety interlocking of the production process; Adapt to the Yokogawa N-IO system, achieve seamless collaboration with the control system, and ensure stable and safe production processes.

2. Energy industry

In scenarios such as oil and gas extraction and natural gas processing, it is used to monitor parameters such as wellhead pressure and pipeline transportation pressure; The explosion-proof performance of the equipment can adapt to hazardous environments on site, and high-precision measurement data provides core support for the production control and safety monitoring of oil and gas extraction processes; At the same time, it can collaborate with the on-site control system to achieve real-time parameter uploading and remote monitoring.

3. Metallurgical industry

Used to measure pressure and liquid level parameters related to the smelting furnace body in high-temperature and dusty environments of steel and non-ferrous metal smelting; The high protection level and wide temperature adaptability of the equipment can effectively resist harsh on-site environments, and stable signal output provides reliable basis for temperature and pressure regulation in the smelting process, helping to improve product quality and production efficiency.

4. Other hazardous industrial scenarios

It can also be applied in industrial fields with explosion hazards such as pharmaceuticals, coatings, and chemical raw material production, for measuring process parameters of various reaction vessels and storage tanks; Through standardized installation and system compatibility, it can flexibly integrate into different industrial automation control systems, providing accurate and reliable measurement support for process monitoring and control.