| Customization: | Available |
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| Type: | Network Type |
| Measuring Medium: | Temperature |
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Comprehensive Product Introduction: Emerson Rosemount™ 248 Temperature Transmitter
1. Product Overview and Positioning
The Rosemount™ 248 Temperature Transmitter by Emerson is an industry-standard solution for reliable temperature monitoring in process environments. Designed as a head-mount or rail-mount device, it supports universal sensor inputs (RTD, thermocouple, mV, ohms) and delivers high accuracy with minimal maintenance. Its robust construction (IP66/67-rated) ensures resilience in harsh industrial settings, while HART®/4-20 mA protocol compatibility enables seamless integration into existing control systems
Key Applications:
Process industries (oil & gas, chemical, power generation)
HVAC and building automation
Sanitary processes (food, pharmaceuticals)
Remote/wireless monitoring (via WirelessHART® option)
2. Key Features and Technical Specifications
2.1 Performance and Reliability
Accuracy: Up to ±0.05% FS (full scale) for RTD inputs, with ambient temperature compensation (-50 to +85°C) .
Stability: One-year drift guarantee reduces recalibration needs and maintenance costs
Isolation: 2.5 kVAC galvanic isolation protects against electrical noise .
Diagnostics: Open/short sensor detection, loop integrity alerts, and configurable alarms
2.2 Flexible Sensor Integration
Universal Inputs: Compatible with RTDs (2/3/4-wire), thermocouples (J, K, T, etc.), mV, and resistance sensors .
Transmitter-Sensor Matching: Uses Callendar-Van Dusen constants to minimize total measurement error
Wireless Option: WirelessHART® protocol (IEC-approved) for remote sites, with 99% data reliability
2.3 Design and Safety
Enclosures: DIN B-style head mount with material options (316L stainless steel, engineering polymers)
Certifications:
SIL 2 (IEC 61508) for safety instrumented systems .
Hazardous area approvals (ATEX, IECEx, EAC, FM/CSA) for explosive atmospheres .
SmartPower™: Intrinsically safe power module for field replacement without process interruption
| Parameter | Specification |
| Input Types | RTD, TC, mV, Ohms |
| Output Signal | 4-20 mA HART® or WirelessHART® |
| Accuracy | ±0.05% FS (RTD) |
| Ambient Temp. | -50 to +85°C |
| Protection Rating | IP66/67 |
| Certifications | SIL 2, ATEX, IECEx, FM/CSA |
3. Installation and Configuration
3.1 Mounting Options
Head-Mount: Direct installation on thermowells or sensors via DIN B housing .
Rail-Mount: For panel or cabinet integration
Assemble-to-Sensor (XA Option): Pre-configured sensor-transmitter assemblies for plug-and-play deployment .
3.2 Configuration Tools
AMS Device Manager: For remote setup, calibration, and diagnostics .
Field Communicator: On-site HART configuration via wired or wireless interfaces .
LCD Display: Local monitoring of temperature, diagnostics, and loop current (M5 option)
3.3 Wiring and Power
Power Supply: 12-42 VDC (HART), or 3.6 VDC lithium battery (wireless) .
Multidrop Capability: Supports up to 15 transmitters on a single 4-20 mA loop .
4. Industry Applications and Benefits
4.1 Cost Efficiency
Reduced Wiring Costs: Eliminates expensive extension wires and multiplexers by transmitting conditioned signals .
Maintenance Savings: Self-diagnostics and one-year stability cut downtime and recalibration frequency
4.2 Enhanced Process Control
Complete Point Solution™: Integrates with Rosemount sensors (e.g., 214C thermocouple, 114C thermowell) for end-to-end accuracy .
Wireless Monitoring: Enables data collection from inaccessible locations (e.g., pipelines, rotating equipment)
4.3 Safety and Compliance
SIL 2 Certification: Validated for safety-critical applications like over-temperature shutdowns .
QR Asset Tags: Provide instant access to manuals, certificates, and calibration data via MyEmerson .
5. Ordering and Customization
The Rosemount 248 offers modular configurations:
Standard Options:
Housing: DIN B head mount (H), rail mount (R) .
Display: LCD (M5)
Calibration: 3-point (Q4) or 5-point (C4) certificates
Specialized Options:
Sanitary Connections: For hygienic industries (F/S codes) .
Extended Warranty: 3-5 years (WR3/WR5)
Typical Model Code: 248 H A I5 M5 Q4 (Head-mount, HART®, ATEX IS, LCD, 3-point cal) .
6. Conclusion
The Rosemount 248 sets the benchmark for temperature transmitters by balancing precision, durability, and adaptability. Its compliance with global safety standards, coupled with Emerson's Complete Point Solution™ ecosystem, makes it ideal for upgrading legacy systems or deploying new installations. For detailed manuals, certifications, or configurator tools, visit Emerson's official resources
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 textiles, dyeing, and other fields. protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
Q: How long will you give me the reply?
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Q: 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 you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
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.
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