MTL Instruments | MTL5582B RTD Resistance Isolator
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Resistance Isolator
- Tags Mtl , Resistance isolator
About the Product
MTL5582B RTD Resistance Isolator for Hazardous Zones
Core Technical Specifications
Input RTD type: 2/3/4-wire (switch-selectable, factory-set for 3-wire)
Resistance range: 10Ω to 400Ω (supports Pt100, DIN 43760)
Excitation current: 200µA (prevents RTD self-heating)
Output range: 10Ω to 400Ω (100µA to 5mA source)
Accuracy drift: ±10mΩ/°C (±0.01% of range)
Response time: <1s to 96% of final value
Open-circuit fail-safe: Upscale to 420Ω
Power supply: 20-35V DC (28-35mA consumption)
Industrial Use Cases
High-temperature monitoring in oil refineries (Zone 0)
Chemical reactor temperature control (Division 1, Group A)
Gas pipeline frost protection systems
Pharmaceutical batch process validation
Mining equipment thermal overload protection
Key Advantages
Eliminates ground loops in 3-wire RTD installations
Prevents false readings from cable resistance errors
Safe for Group A (acetylene) hazardous environments
LED power indicator for quick diagnostics
Low 0.8W power dissipation reduces heat buildup
Installation Guide
Mount on standard DIN rail (safe area only)
Use shielded twisted pairs for RTD connections
Verify switch settings match RTD wiring (2/3/4-wire)
Ensure ≤5mA load on output terminals
Ground terminal must be earthed
Package Contents
1x MTL5582B isolator unit
1x DIN rail clip
Termination guide (printed)
Shipping & Support
In stock - ships same day via Fedex/DHL/UPS
24/7 technical support for installation issues
12-month warranty (excludes misuse/overvoltage)
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- Warranty: NexAuto offers a 12-month warranty on all parts purchased from us, in addition to any manufacturer coverage.
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- Custom Calibration: Provide your specifications, and we’ll handle the rest with precision.

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