Original Abbe 248 Temperature Transmitter 4-20mA Hart 7 ATEX/Iecex Certified

ABBe 248 Temperature Transmitter
Precision and Reliability in Industrial Temperature Monitoring
The ABBe 248 Temperature Transmitter is a high-performance, compact device designed to deliver accurate and reliable temperature measurement across a wide range of industrial applications. Engineered for harsh environments, this transmitter seamlessly integrates resistance temperature detectors (RTDs) or thermocouples into modern automation systems, providing critical data for process control, safety, and optimization. With its robust construction, advanced diagnostics, and compliance with global safety standards, the ABBe 248 is a trusted solution for industries such as oil and gas, chemical processing, power generation, and HVAC.

1. Core Technology and Operating Principle
The ABBe 248 operates by converting the analog signal from a temperature sensor (e.g., Pt100 RTD) into a standardized 4-20 mA HART® or digital PROFIBUS PA output. Its microprocessor-based design employs adaptive signal conditioning to compensate for lead resistance, sensor drift, and ambient temperature fluctuations, ensuring precise measurements even in electrically noisy environments.

Key Innovations:

Smart Sensor Validation: Continuously monitors sensor health, detecting open circuits, short circuits, or degradation, and alerts operators via HART® diagnostics.
Dynamic Temperature Compensation: Automatically adjusts for thermal effects on signal wiring, maintaining accuracy across the entire operating range (-40°C to +400°C).
Non-Volatile Memory: Stores configuration data during power outages, eliminating the need for recalibration.
2. Technical Specifications
Measurement Performance
Input Types: Supports Pt100, Pt1000, Ni100 RTDs; configurable for thermocouples (Type J, K, T).
Temperature Range:
RTD: -40°C to +400°C (-40°F to +752°F).
Thermocouple: Dependent on sensor type (e.g., Type K: -40°C to +1200°C).
Accuracy: ±0.1% of span for RTD; ±0.5°C for thermocouples.
Stability: ±0.01% per year, minimizing long-term calibration needs.
Environmental Resilience
Enclosure Rating: IP66/67 and NEMA 4X, providing dust-tight, water-resistant protection for outdoor or washdown environments.
Ambient Operating Temperature: -40°C to +85°C (-40°F to +185°F).
Hazardous Area Certification: ATEX/IECEx Zone 0/1/2 (Ex ia IIC T6 Ga), FM/CSA Class I, Div. 1 for explosive atmospheres.
Power and Communication
Power Supply: 10.5-55 V DC, compatible with most industrial power systems.
Output Signals: 4-20 mA HART® 7, PROFIBUS PA.
Loop Diagnostics: Measures loop current, voltage, and load resistance for predictive maintenance.
3. Advanced Functional Features
a) HART® 7 Communication
The transmitter leverages HART® 7 protocol for bidirectional digital communication, enabling:

Remote Configuration: Adjust parameters (range, damping, sensor type) via ABBe Field Information Manager (FIM 3) or third-party HART® communicators.
Real-Time Diagnostics: Access sensor status, process variables, and device health data without interrupting the 4-20 mA signal.
b) PROFIBUS PA Integration
For fully digital networks, the PROFIBUS PA variant provides:

Multi-Drop Capability: Connect up to 32 devices on a single cable, reducing wiring costs.
Plug-and-Play Compatibility: Seamless integration with ABBe's 800xA Distributed Control System (DCS) or Siemens PCS 7.
c) Safety and Compliance
SIL 2 Certification: Complies with IEC 61508/61511 for use in safety instrumented systems (SIS).
Galvanic Isolation: 1.5 kV isolation between sensor, power, and communication circuits prevents ground loops.
4. Design and Durability
Robust Mechanical Construction
Housing: Die-cast aluminum with epoxy coating, resistant to corrosion, UV radiation, and chemical splashes.
Terminal Blocks: Spring-loaded terminals with strain relief for secure connections in high-vibration environments (e.g., offshore platforms).
Optional Display: A local LCD module (optional) shows real-time temperature, percentage of range, and diagnostic messages.
Installation Flexibility
Mounting Options: DIN rail (TS35), direct screw mounting, or remote head mounting via extension cables.
Sensor Compatibility: Direct connection to 2-, 3-, or 4-wire RTDs; supports intrinsic safety barriers for Zone 0 installations.

Our Services

OEM / ODM services
To 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 services
Fastest reply:Professional sales engineers 7/24 online services
Payment terms:T/T ,Western union, Paypal, Credit Card, L/C others
Fast delivery: within 24 hours release the cargo (normal spec.), Customized 7-12 days after payment .

MAINTENANCE & AFTER-SALES SERVICES
Customer 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 months
Product life-long maintenance: Holykell can provide you with the maintenance of the whole life of the sensors

Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information
Q: What is the delivery time?
A:The products in stock will be shipped after receiving the payment, and the products that need to be ordered are subject to the factory time.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing.
Q: How about the payment terms?
A:You can choose T/T.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.
Q:After sales and warranty?
A: We provide one year warranty lifetime technical support services.