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Overview:
● Types: Mineral-insulated platinum RTD (WZK, WZPK), explosion-proof models
● Applications: Measures temperatures from -200°C to 500°C in industrial processes, suitable for harsh environments where standard RTDs cannot be installed
● Features: Small diameter, flexible, vibration-resistant, fast response time, high mechanical strength, excellent electrical insulation, and strong resistance to contamination
● Explosion-proof: Certified (Exd Ⅱ CT5Gb) for hazardous environments with explosive gas mixtures (IIA, IIB, IIC, T1-T5)
Key Technical Specifications:
● Measurement Range & Accuracy:
o WZK (Pt100): -200 to 500°C
● Class A: ±(0.15 + 0.002 |t|)℃ (valid from -200 to 650°C)
● Class B: ±(0.30 + 0.0051 |t|)℃ (valid from -200 to 800°C)
o Resistance Ratio: R100/R0 = 1.3850 (R0 = 100Ω ±0.06Ω for Class A, ±0.12Ω for Class B)
● Thermal Response Time (τ0.5):
o φ3mm sheath: <3s
o φ4mm sheath: <5s
o φ5mm sheath: <8s
o φ6mm sheath: <12s
● Nominal Pressure: Based on installation method and sheath diameter
● Insulation Resistance: High-density oxide insulation ensures stability and accuracy
● Current Influence: Maximum detection current ≤5mA to minimize self-heating effects
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