MTL4755ac RTD Barrier: Precision 3-Wire Temperature Monitoring for Hazardous Areas
Core Functionality
The MTL4755ac safely connects 3-wire RTDs in explosive zones. Features ultra-low 18Ω resistance/channel for accurate measurements. Channels track within 0.15Ω across temperatures. One module supports one RTD. Not for bussed power systems.
Performance Specifications
| Brand/Model: | MTL4755ac Series |
| Channels: | 3 isolated channels |
| Max Resistance: | 18.2Ω (Ch1), 18.5Ω (Ch2-3) |
| Voltage Limits: | Vmax: 2.3V, Vwkg: 0.6V |
| Fuse Protection: | 100mA rating |
| Temperature Stability: | ±0.15Ω tracking (-20°C to +60°C) |
| Power Handling: | 0.23W matched power |
Installation Guide
Connect MTL4755ac directly to RTD terminals. Maintain cable resistance below 18.5Ω. Suitable for earthed or floating bridges. Ensure proper grounding. Avoid bus-powered configurations.
Compatible Devices
Designed exclusively for 3-wire RTD sensors. Works with Class A, B, and C RTDs. Ideal for temperature monitoring in refineries and chemical plants.
Safety Certifications
Approved for hazardous locations. Safety parameters: 3V, 10Ω, 300mA. Meets international explosion protection standards.
What’s Included
- MTL4755ac barrier unit
- Mounting hardware
- Technical documentation
Support & Delivery
12-month quality guarantee. Ships via FedEx, UPS, DHL with real-time tracking. International delivery available.
Technical Questions
- Q: Works with 4-wire RTDs?
A: No – designed only for 3-wire configurations - Q: Minimum temperature rating?
A: Operational from -20°C - Q: Calibration required?
A> Factory calibrated – ready for installation - Q: Maximum cable length?
A: Depends on resistance – keep under 18.5Ω - Q: Replace fuses onsite?
A: Yes – 100mA fuses user-replaceable
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