IPDB › China Industry › Instruments & Meters
China, Chinese 100% Original Rosemounte 248 Guide Rail Temperature Transmitter with Accurate Readings1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
TransmitterTemperature Humidity TransmitterTransmitterTemperature Transmitter
Kerui (Weifang) Automation Equipment Co., Ltd.
Preview:
Product DescriptionProduct DescriptionRosemount 248 Rail-Mounted Temperature TransmitterIn industrial processes—from chemical manufacturing and oil refining to power generation and food processing—accurate temperature measurement is a cornerstone of operational efficiency, product quality, and safety. Temperature fluctuations can disrupt chemical reactions, damage equipment, compromise product integrity, or even pose safety hazards, making reliable temperature monitoring non-negotiable. Traditional temperature measurement tools, such as standalone thermometers or basic sensors, often fall short in industrial settings due to limitations in signal transmission, accuracy, and integration with modern control systems. This is where temperature transmitters play a critical role.A temperature transmitter acts as a bridge between temperature sensors (such as RTDs, thermocouples, or thermistors) and industrial control systems (ICS) or distributed control systems (DCS). It converts the low-level electrical signal from a sensor into a standardized, noise-resistant signal (typically 4-20 mA DC or digital protocols like HART?) that can be transmitted over long distances with minimal interference. This ensures that operators and control systems receive accurate, real-time temperature data to make informed decisions about process adjustments, maintenance, and safety protocols.Among the leading temperature transmitters in the industrial market, the Rosemount 248 Rail-Mounted Temperature Transmitter stands out as a high-performance, versatile solution. Manufactured by Emerson's Rosemount brand—a global leader in process measurement and control solutions with decades of expertise—the Rosemount 248 is engineered to meet the demanding requirements of industrial environments. It combines exceptional accuracy, robust construction, and flexible integration capabilities, making it a preferred choice for industries where precise temperature monitoring is critical.1. Product Overview: What is the Rosemount 248 Rail-Mounted Temperature Transmitter?The Rosemount 248 is a compact, rail-mounted temperature transmitter designed to convert signals from RTD (Resistance Temperature Detector) or thermocouple sensors into standardized output signals for industrial control systems. As part of Rosemount's portfolio of process measurement devices, the 248 is specifically engineered for ease of integration into panel-mounted or cabinet-mounted systems, thanks to its DIN rail mounting design—a common standard in industrial automation for organizing and securing control components.One of the defining characteristics of the Rosemount 248 is its versatility. It supports a wide range of sensor types, including all major RTD configurations (such as Pt100, Pt500, Pt1000, and Ni100) and thermocouple types (such as J, K, T, E, R, S, B, and N). This compatibility eliminates the need for multiple transmitters for different sensor types, simplifying inventory management and reducing costs. The transmitter also offers flexible output options, including the industry-standard 4-20 mA DC analog signal with HART? communication, as well as digital protocols like FOUNDATION? Fieldbus and PROFINET (in select models), enabling seamless integration with both legacy and modern control systems.The Rosemount 248 is built for reliability in harsh industrial environments. It features a rugged housing constructed from high-grade plastic (typically polycarbonate or ABS) that provides protection against dust, moisture, and mechanical impact, with an ingress protection (IP) rating of IP20 or higher (depending on the model). Another key advantage of the Rosemount 248 is its user-friendly design. It includes intuitive configuration options—such as local pushbuttons, a built-in LCD display (in some models), or remote configuration via HART? communicators or software tools like Emerson's AMS Device Manager. This allows operators and technicians to quickly set up the transmitter, calibrate it, or troubleshoot issues without the need for specialized tools or extensive training. Additionally, the transmitter's compact size (typically 17.5 mm wide for DIN rail mounting) saves valuable panel space, making it ideal for systems with limited room for additional components.2.Core Features of the Rosemount 248 Rail-Mounted Temperature TransmitterTo fully appreciate the value of the Rosemount 248, it is essential to examine its core features in detail. These features are designed to enhance accuracy, reliability, flexibility, and ease of use, making the transmitter a versatile solution for a wide range of industrial temperature measurement applications.2.1 Wide Sensor CompatibilityThe Rosemount 248 supports a broad range of temperature sensors, making it adaptable to diverse industrial needs. Here is a breakdown of its sensor compatibility:RTD Compatibility: The transmitter works with all common RTD types, including Pt100 (100 ohms at 0°C), Pt500 (500 ohms at 0°C), Pt1000 (1000 ohms at 0°C), and Ni100 (100 ohms at 0°C). It supports 2-wire, 3-wire, and 4-wire RTD configurations, which is critical for minimizing measurement errors caused by lead resistance. For example, 3-wire and 4-wire configurations compensate for lead resistance, ensuring accurate readings even when sensors are installed at a distance from the transmitter. Thermocouple Compatibility: The transmitter is compatible with all major thermocouple types, including J (iron-constantan), K (chromel-alumel), T (copper-constantan), E (chromel-constantan), R (platinum-rhodium 13%-platinum), S (platinum-rhodium 10%-platinum), B (platinum-rhodium 30%-platinum-rhodium 6%), and N (nicrosil-nisil). It includes built-in cold junction compensation (CJC), a critical feature for thermocouple measurements. Thermocouples generate a voltage based on the temperature difference between the measurement junction (at the process) and the reference junction (at the transmitter). The Rosemount 248's CJC function automatically measures the reference junction temperature and adjusts the output signal to eliminate errors caused by fluctuations in ambient temperature, ensuring accurate readings regardless of changes in the transmitter's environment.Other Sensor Types: In addition to RTDs and thermocouples, select models of the Rosemount 248 support resistance sensors (such as 10-ohm or 100-ohm thermistors) and millivolt signals, further expanding its versatility. This allows the transmitter to be used in specialized applications where non-standard sensors are required.SpecificationLong-term stability±0.1% of URL / 5 yearsEnvironmental Temperature Impact±0.025% of Span / 10°CPower supply voltage12 to 35 V DCResponse time< 500 msOperating Temperature-40°C to +85°CStorage Temperature-50°C to +100°CHumidity0-100% RH (non-condensing)Protection LevelIP66 / NEMA 4X (Dustproof, Waterproof against powerful water jets, Corrosion-resistant)Company ProfileKeRui (WeiFang) Automation Equipment Co., Ltd. is specialized in industrialautomation instrument development, production and sales, technical servicesand supporting equipment supply of specialized companies. The mainproducts are fow meters, level meters, temperature meters, pressuremeters, electrical meters, thermal meters, programmable controller(PLC),Dcs distributed control system, eight series of more than 1,000specifcations. lts products and technologies are widely used in electricpower, metallurgy, petrochemical, environ- mental protection, plasticsfood,l printing, tobacco, textile, dyeing and other fields.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.
Purchasing Request
Note: Send your purchase request, and we will screen suppliers or manufacturers for you free of charge...