... pin. 8) Insulation resistance≥100MΩ9)Control type: mechanical temperature controller 10)Contact resistance:≤50MΩ ... (mm)Thermometer Bulb Length(mm)WHD-40 B,E,F,H 0-40°C ≤4 ... ±5°C 300-3000 (110)WHD-85 B,E,F,H 30-85°C ≤4.5 ... 5°C 300-3000 (50)WHD-93 B,E,F,H 30-93°C≤4.5 ... ±5°C 300-3000 (45)WHD-110 B,E,F,H 30-110°C ≤4. ... ±5°C 300-3000 (40)WHD-250 B,E,F,H 50-250°C ≤8°C ... ±8°C 300-3000 Φ3×170WHD-320 B,E,F,H 50-320°C ≤10°C ...