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China, Chinese Original Wikai Bourdon Tube Pressure Gauge with Switch and Electrical Contact Pgs21.1001 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Meter for Liquid GasPressure GaugeGaugePressure Gauge
Kerui (Weifang) Automation Equipment Co., Ltd.
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Product DescriptionProduct DescriptionWIKAI PGS21 Pressure GaugeWIKAI Alexander Wiegand SE & Co. KG, founded in 1946 in Klingenberg, Germany, has grown into a global leader in pressure, temperature, and level measurement technology. The company's reputation is built on a foundation of precision engineering, quality manufacturing, and unwavering reliability. Within its extensive product portfolio, the "63" series of pressure gauges represents a core product line, and the PGS21 is arguably one of its most iconic and widely recognized members.The PGS21 occupies a crucial market segment: the need for a high-quality, general-purpose pressure gauge that doesn't compromise on core performance yet remains economically attractive. It is designed to meet the stringent requirements of the EN 837-1 standard, which governs bourdon tube pressure gauges in Europe and is recognized worldwide as a benchmark for quality. Its radial, bottom-connected design (Bourdon tube at 6 o'clock) makes it universally adaptable for panel mounting or direct installation onto machinery. The PGS21 is the "go-to" instrument for OEMs (Original Equipment Manufacturers), maintenance teams, and plant operators who require a dependable, no-fuss solution for day-to-day pressure monitoring.1. Detailed Technical Specifications and Design AnalysisThe PGS21's design is a masterclass in functional optimization. Every component is engineered for a specific purpose.1.1. Case Construction and ProtectionMaterial: The case is manufactured from black glass-fibre reinforced thermoset plastic. This material offers an exceptional combination of properties: it is incredibly robust, resistant to impact, corrosion, and chemicals commonly found in industrial environments (e.g., oils, greases, solvents). It is also non-conductive, adding a degree of electrical safety.Design: The case is a two-part assembly (bezel and body) that provides a robust enclosure for the sensitive movement. The design is streamlined and functional.Ingress Protection (IP): The standard PGS21 boasts an IP54 protection rating as per IEC 60529. This signifies:5: Protection against dust limited ingress (no harmful deposit).4: Protection against water splashing from any direction.This makes it suitable for most industrial environments where exposure to dust and occasional coolant or water splash is expected.1.2. The Movement and Measuring SystemThis is the core functional unit of the gauge.Bourdon Tube Material:Standard (Code: CU): Phosphor bronze or copper-beryllium. This is the economical choice suitable for non-aggressive media such as air, dry gases, water, and light hydraulic oils.Movement Components: The internal mechanism, including the link, sector gear, and pinion, is typically made from high-quality, wear-resistant brass and steel alloys to ensure minimal friction, long-term stability, and resistance to wear.1.3. Dial, Pointer, and WindowDial: Made from white aluminium. The use of metal prevents static charges and provides a stable base for precise printing. The scale is clearly printed in black, with major and minor graduations. The unit of measurement (e.g., bar, psi, kPa, MPa) and the accuracy class are prominently displayed.Pointer: Made from black lightweight aluminium, counterbalanced for accurate reading. The tip is often knife-edged to allow for precise parallax-free reading against the scale.Window: Made from clear, durable safety glass. This offers excellent scratch resistance and clarity compared to plastic alternatives. It is designed to contain fragmentation in the unlikely event of breakage.2. Key Variants and Customization Options2.1. Material Selection: Copper Alloy vs. Stainless SteelThis is the most critical choice, dictated solely by the medium being measured.Choose Copper Alloy (CU) for: Compressed air, dry gases, water, heating systems, hydraulic oil (non-ester based), and other non-corrosive media. It is the standard and most cost-effective option.Choose Stainless Steel (CR) for: Sea water, chemicals, steam, oxygen, pharmaceuticals, food processes, aggressive gases, and applications with high humidity or frequent cleaning. It prevents corrosion and media contamination.2.2. Liquid Filling: Dry vs. Glycerin vs. Silicon OilThe gauge's internal cavity can be filled with a damping liquid.Dry (Unfilled): The standard configuration. Perfect for applications with steady pressures and minimal vibration.Glycerin (Food-Grade): The most common fill liquid. Glycerin filling serves two primary purposes:Lubrication: It lubricates the movement, drastically reducing wear on the gear train and extending the instrument's operational life.Damping: It acts as a shock absorber, dampening pressure pulsations and mechanical vibration. This results in a steady, easy-to-read pointer instead of one that is constantly flickering or vibrating, which causes premature failure. It also prevents condensation inside the case.Silicone Oil: Used in applications with extreme temperature fluctuations or where compatibility with certain media is a concern. Silicone oil has a wider operating temperature range than glycerin.2.3. Safety Features: The Pressure Containment Ring (Optional)In the event of a catastrophic failure of the Bourdon tube (e.g., due to extreme overpressure), the sudden release of energy can blow the glass and pointer out of the front of the gauge, creating a safety hazard. The PGS21 can be equipped with an enhanced safety feature, often called a "blow-out back" or "pressure containment ring."This design incorporates a specially designed weakened rear section of the case. In an overpressure event, the force is deliberately channeled and released outwards through the back of the gauge, away from the operator. This contains all fragments (glass, pointer) within the case ring, ensuring maximum operator safety. This feature is highly recommended for pressures above 100 bar or for gases and other energy-intensive media.SpecificationPressure Range0…1.6 bar to 0…600 bar (customizable)Contact Rating250V AC/6A (resistive), 250V AC/0.3A (inductive)Max. Switching Power1500 VA (AC), 180W (DC)Operating Temperature-20°C to +60°C (ambient)Process Temperature-40°C to +100°C (with glycerin fill)Protection RatingIP54 (standard), IP65 (optional)CertificationsEN 837-1, ASME B40.100Switch TypeSPDT (Single Pole Double Throw)Company ProfileKeRui (Weifang) Automation Equipment Co. Ltd. Has maintained a cooperatve relationship with Rosemount for 15 years, and our purchase quantity has reached 20,000 units.We supplied the tuning fork level gauge to the Rosemount factory and have been well received by the Beijing factory. We have cooperated with Yokowaga and maintained a cooperative relationship for 8 years, and our purchase quality has reached 7000 units.The companies we have cooperated with:1. Awarded "Outstanding Supplier by Yanchang Petroleum in 20082. In December 2012, our company was awarded the "Excellent Equipment Service Award" for the expansion project of units 6 and 7 of the Guangdong Guohua Yuedaishan Power Plant3. Awarded "Outstanding Supplier by Yaxing Group in 20134.200 transmitters for Haihua Group's ethylene debottlenecking transformation project in 2015.5. In 2018, we were rewarded as a National Nuclear Power Instrumentation Industry Measurement and Testing Alliance member.6.160 transmitters and 20 electric autuators for the Shandong Laigang Yongfeng Steel expansion project in 20197.In 2022, Jinneng Chemical (Qingdao) Co., Led/ Jinneng 2x450,000 tons/ year high-performance polypropylene project (newly built) equipped 460 transmitters from our company.8. In 2022, Shandong Qinghe Chemical Technology Co., Ltd.s hydrogen peroxide method epoxy propane device and supporting hydrogen peroxide device expansion project used 253 pressure transmitters.9.In 2022, the Wanhua Chemical HTN project NPG installed 320 transmitters and 50 sets of valve positioners.CertificationsOur ServiceOEM / ODM servicesTo meet the user diversified requirement, Holykell have established a set of customer service and technical support system with OEM / ODM order as the center, and responded and Handle the customer's requirements in a timely manner to ensure accurate delivery time and product quality.Order servicesFastest reply:Professional sales engineers 7/24 online servicesPayment terms:T/T ,Western union, Paypal, Credit Card, L/C othersFast delivery: within 24 hours release the cargo (normal spec.), Customized 7-12 days after payment . MAINTENANCE & AFTER-SALES SERVICESCustomer Feedback: Sales engineers and technical engineers will be one-on-one service for you to exclude all obstacles when use our sensors.Warranty period: 12 monthsProduct life-long maintenance: Holykell can provide you with the maintenance of the whole life of the sensorsPackaging & ShippingFAQQ1: How long will it take you to give me the reply?A: We will reply to you as soon as we see the informationQ2: What is the delivery time?A: Our delivery time is within 3- 7 days after we get your payment; for large qty mass orders, the time should be confirmed again for youQ3: How about your package? A: Do not worry about the package. We have a lot of experience in packing, and all our packages are wooden case packages.Q4: How about the payment terms?A: You can choose T/T.Q5: Do you provide samples? A: Yes, we have materials in stock to help you get the samples as soon as we can.Q6: What is the MOQ?A:1PC.Q7: Can I get a lower price if I order large quantities? A: Yes, cheaper prices with larger orders.Q8: Why choose us?We have a perfect customization, not only to provide you with quality products, but also to have a professional customer service team available at any time to provide you with support. We pay more attention to establishing a long-term cooperative relationship with you to achieve continuous business growth.Q9: How can we guarantee quality?We have strict requirements on the quality of our products, and we will conduct a final inspection of our products when we ship them.
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