{"id":706,"date":"2026-08-29T14:25:55","date_gmt":"2026-08-29T06:25:55","guid":{"rendered":"http:\/\/www.bosder.com\/?post_type=product&p=706"},"modified":"2026-09-21T16:54:45","modified_gmt":"2026-09-21T08:54:45","slug":"bsw-300-intelligent-valve-positioner","status":"publish","type":"product","link":"https:\/\/www.bosder.com\/en\/product\/bsw-300-intelligent-valve-positioner\/","title":{"rendered":"BSW-300 Smart Valve Positioner"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Overview<\/td>\n<\/tr>\n
The BSW300 Intelligent Valve Positioner is a smart two-wire field instrument introduced by Lianyungang Boshangde Automatic Control Equipment Co., Ltd. As a control component for pneumatic valves, this positioner is widely used in automatic control systems across industries such as chemicals, petroleum, metallurgy, light industry, and power generation.<\/td>\n<\/tr>\n
This smart valve positioner receives a 4\u201320 mA valve position signal from the control system and uses A\/D conversion to obtain the valve position setpoint; at the same time, it uses a position sensor to determine the actual valve position.
\nFeedback signal; both signals are processed by the control software to control the operation of the pneumatic actuator, thereby driving the valve position to the set value (as shown in Figure 2-1).<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
Figure 2-1: Schematic Diagram of the Smart Locator<\/td>\n<\/tr>\n
This intelligent valve positioner is a high-performance device based on microprocessor technology. It effectively overcomes friction and unbalanced forces on the valve plug, thereby improving the response speed of the control valve.
\n, ensuring rapid and accurate positioning. Not only can it replace traditional electric\/pneumatic valve positioners, but it can also be directly connected via the HART protocol to facilitate information exchange with network and control systems. This intelligent valve positioner complies with GB 3836.1-2010 \u201cExplosive Atmospheres\u2014Part 1: General Requirements for Equipment,\u201d GB 3836.4-2010 \u201cExplosive Atmospheres\u2014Part 4: Equipment Protected by Intrinsic Safety,\u201d and GB 3836.20-2010 \u201cExplosive Atmospheres\u2014Part 20: Equipment with Protection Level (EPL) Ga.\u201d Its explosion-proof marking is ExiaHC 4T\u2013T6 Ga, and it is suitable for Zone 0, Zone 1, or Zone 2 environments within plants where explosive mixtures of flammable gases or vapors with air exist, classified as IA\u2013IIC and T1\u2013T16 groups. This product has been tested and approved by a nationally accredited certification body for explosion-proof electrical products and has obtained an explosion-proof certificate of conformity.<\/td>\n<\/tr>\n
Feature Overview<\/td>\n<\/tr>\n
Adaptive Function: Automatically detects the valve's zero point and span, optimizes valve control parameters, and improves control accuracy;<\/td>\n<\/tr>\n
Configuration Functions: Allows you to set valve characteristic curves, operating modes, deadbands, tight shut-off, and event outputs;<\/td>\n<\/tr>\n
Self-diagnostic functions: Displays input current values, up\/down travel times, dead zones, etc.;<\/td>\n<\/tr>\n
Safety Valve Positions: Selectable modes include fully open, fully closed, hold, manual, and others;<\/td>\n<\/tr>\n
Communication Features: Communication capabilities based on the HART protocol;<\/td>\n<\/tr>\n
Feedback Functions: 4\u201320 mA DC valve feedback signals, digital feedback signals.<\/td>\n<\/tr>\n
Features<\/td>\n<\/tr>\n
Positioning accuracy as high as 0.51 TP3TF.S;<\/td>\n<\/tr>\n
It features intrinsically safe explosion protection and offers safe and reliable performance;<\/td>\n<\/tr>\n
It has a simple structure and compact size, and can be mounted on small actuators;<\/td>\n<\/tr>\n
Automatic tuning, automatic diagnostics, and configurable valve characteristic curves;<\/td>\n<\/tr>\n
Fewer mechanical parts and good vibration resistance;<\/td>\n<\/tr>\n
Menu settings can be configured on-site or remotely;<\/td>\n<\/tr>\n
Low power consumption, low air consumption, and low operating costs;<\/td>\n<\/tr>\n
Uses a two-wire 4\u201320 mA standard signal;<\/td>\n<\/tr>\n
A lightning protection module is optional, reducing the likelihood of the locator being damaged by lightning surges.<\/td>\n<\/tr>\n
Lightning Protection Features<\/td>\n<\/tr>\n
With advances in technology, intelligent valve positioners have gradually evolved toward greater intelligence and bus-based systems. Consequently, the use of highly integrated components has become inevitable, resulting in a decrease in the equipment\u2019s pressure and overcurrent resistance, as well as reduced resistance to lightning strikes. In the event of a lightning strike, these components are easily damaged, causing the positioner to fail. If the associated control valve is used at critical process control points or in locations with high safety requirements, the sudden failure of the positioner could likely result in loss of process control or trigger a production safety incident. Conventional smart valve positioners offer no protection against high currents and overvoltages entering through wires, making them susceptible to damage from lightning strikes and posing a hidden hazard to production safety. To address this shortcoming, the BSW600 smart valve positioner offers an optional lightning protection circuit, enabling it to function as a valve positioner with lightning protection capabilities.<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
Figure 2-2: Block Diagram of the Principle of a Lightning-Protected Smart Valve Positioner<\/td>\n<\/tr>\n
\n\n\n\n\n\n
<\/td>\n1. Lightning protection is not included as standard equipment; it is an optional feature during product selection;<\/td>\n<\/tr>\n
2. When using a lightning protection locator, grounding must be performed in accordance with relevant national standards;<\/td>\n<\/tr>\n
3. When the device is equipped with lightning protection, an insulation withstand voltage test must not be performed.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

\u6982\u00a0\u00a0\u8ff0 BSW300\u667a\u80fd\u9600\u95e8\u5b9a\u4f4d\u5668\u4e3a\u8fde\u4e91\u6e2f\u535a\u5c1a\u5fb7\u81ea\u63a7\u8bbe\u5907\u6709\u9650\u516c\u53f8\u63a8\u51fa\u7684\u667a\u80fd\u578b\u4e24\u7ebf\u5236\u73b0\u573a\u4eea\u8868\u3002\u672c\u5b9a\u4f4d\u5668\u4f5c\u4e3a\u6c14\u52a8 …<\/p>\n

BSW-300 Smart Valve Positioner<\/span> Read More \u00bb<\/a><\/p>","protected":false},"featured_media":1121,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"product_brand":[],"product_cat":[21,24],"product_tag":[],"class_list":["post-706","product","type-product","status-publish","has-post-thumbnail","product_cat-intelligent-valve-positioner-series","product_cat-self-controlled-ball-valve","desktop-align-left","tablet-align-left","mobile-align-left","ast-product-gallery-layout-vertical-slider","ast-product-tabs-layout-horizontal","first","instock","featured","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/product\/706","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/media\/1121"}],"wp:attachment":[{"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/media?parent=706"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/product_brand?post=706"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/product_cat?post=706"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.bosder.com\/en\/wp-json\/wp\/v2\/product_tag?post=706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}