Product Description
In the realm of industrial process control, accurate and reliable temperature measurement is the cornerstone of efficient operations, safety compliance, and quality assurance. The 214C RTD/248/644 Temperature Transmitter Module emerges as a cutting-edge solution designed to convert the resistive signals of RTD (Resistance Temperature Detector) sensors into standardized output signals, enabling seamless integration with modern control systems. Engineered for versatility, precision, and robustness, this module sets a new benchmark for thermal measurement in demanding industrial environments.
The primary role of the 214C RTD/248/644 module is to interface with RTD sensors-typically Pt100, Pt1000, Ni100, or Ni1000 types-and translate their temperature-dependent resistance values into linearized, proportional output signals. RTDs operate on the principle that their electrical resistance changes predictably with temperature; for example, a Pt100 sensor exhibits a resistance of 100Ω at 0°C and increases linearly with temperature. The transmitter module amplifies this small resistance change, compensates for non-linearities, and converts it into a standardized output, such as a 4-20mA analog signal or a digital protocol like HART® 7, Modbus RTU, or Profibus PA.
The module features a dual-channel design (for select models), allowing simultaneous measurement from two RTD sensors, which is ideal for applications requiring redundancy or comparative analysis. Its advanced microprocessor-based circuitry performs real-time signal conditioning, including linearization, noise filtering, and self-diagnosis, to ensure accurate temperature representation even in the presence of electrical interference or thermal fluctuations. The calibration process is simplified through built-in configuration tools, enabling users to define sensor type, measurement range, output scaling, and diagnostic thresholds via a local interface or remote software.
Features
The 214C module supports all common RTD types, including 2-wire, 3-wire, and 4-wire configurations, accommodating sensors with resistance ranges from 0 to 10kΩ. This flexibility makes it suitable for applications spanning -200°C to +600°C (-328°F to +1112°F), covering cryogenic environments, high-temperature industrial furnaces, and everything in between. For example, in a chemical plant, it can seamlessly interface with Pt100 sensors in a reactor cooling system (-50°C to +200°C) and Ni1000 sensors in a steam superheater (+300°C to +550°C), ensuring uniform signal processing across diverse thermal zones.
With a calibration accuracy of ±0.1% of span (depending on sensor type and configuration), the module minimizes measurement errors, critical for processes where temperature deviations can impact product quality or safety. Its built-in linearization algorithm corrects the inherent non-linearity of RTDs, achieving a temperature-to-output linearity better than ±0.05% of full scale. Advanced digital signal processing (DSP) techniques filter out electromagnetic interference (EMI) and radio-frequency interference (RFI), ensuring stable outputs even in environments with high electrical noise, such as near motor drives or power transformers.
Industrial Process Control
The 248 and 644 variants expand the module's capabilities with configurable output options:
248 Model: Features a 4-20mA analog output with HART® 7 protocol, enabling bidirectional communication for remote configuration and diagnostics. The HART interface allows users to access real-time temperature data, sensor health status, and module diagnostics without disrupting the analog signal, ideal for predictive maintenance in distributed control systems (DCS).
644 Model: Integrates digital communication protocols like Modbus RTU or Profibus PA, supporting multi-drop networks for high-density measurement applications. This is particularly useful in smart factories or industrial IoT setups, where hundreds of temperature points need to be monitored and controlled via a single network.
Both variants offer fail-safe output modes, such as maintaining the last valid value (LVL) or defaulting to a pre-set safety value (e.g., 22mA for a high-temperature alarm), ensuring process continuity during power outages or sensor faults.
Designed to withstand harsh industrial conditions, the 214C module features an IP66/NEMA 4X-rated enclosure (optional explosion-proof housing for hazardous areas), protecting internal components from dust, water jets, and corrosive gases. It operates reliably across a wide ambient temperature range (-40°C to +85°C / -40°F to +185°F) and supports extended humidity resistance (5-95% RH, non-condensing), making it suitable for offshore platforms, cement plants, and pharmaceutical manufacturing facilities. The module also complies with international standards for electromagnetic compatibility (EMC), including EN 61326-1, ensuring minimal interference with adjacent equipment.
Product Parameters
| Accuracy |
4-20ma |
Place of Origin |
China |
| Material |
Stainless Steel |
Customized Support |
OEM, ODM, OBM |
| Warranty |
1 Year |
Brand Name |
Rosemount Emerson/Siemens/Yokogawa |
| Model Number |
214C RTD/248/644 |
Material |
waterproof |
| Type |
temperature transmitter |
Temperature Range |
-40-85 °C |
| Output Signal |
4~20mA DC + HART |
Weight |
0.08KG |
| Selling Units |
Single item |
Single Package Size |
5X5X4 cm |
| Single Gross Weight |
0.080 kg |
- |
- |
Packaging & Shipping
Carton Boxes
Company Profile
KeRui (Weifang) Automation Equipment Co., Ltd.Specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply to specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
FAQ
1.Q: How long is the delivery?
-- Mostly within 10days
2.Q:Can I get a sample?
-- Sure, contact our sales please
3.Q:What is your MOQ?
-- 1pcs
4.Q: How about warranty time?
-- 12month
5.Q: How can I visit your factory?
-- Fly to Qingdao air port, it's our pleasure to pick you up.
6.Q:How do you control your quality ?
-- We have EPR system .we control from parts, process, testing, packing ,retesting.
Every Sensor will be tested two times before reach you, after that sport test for the third time. Make sure about the quantity.
Audited Supplier 
){kind=link}