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MTCS2601
Thermal Conductivity Sensor for Leak or Pressure Detection
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SPECIFICATION
MTCS2601 Thermal Conductivity Sensor Applications
• Primary vacuum control following Pirani principle. This sensor is easily added within a pressure valve or directly in vacuum pipes or systems, such as small mechanical pumping systems, vacuum pumping machine and analytical instruments .
• Leakage miniature SMD sensor as control integrity of closed systems or instruments under dedicated pressure, able to
detect defect like corrosion or simply box opening (load cells; flywheel systems, Dewar…)
MTCS2601 Thermal Conductivity Sensor Electrical specification
| Description | Symbol | Min | Typical | Max | Unit |
| Measuring resistance at 23°C ± 2°C | Rm1 and Rm2 | 110 | 120 | 135 | Ω |
| Reference resistance at 23°C± 2°C | Rt1 and Rt2 | 240 | 270 | 300 | Ω |
| Ratio | Rtx/(Rm1+Rm2) | 1.06 | 1.12 | 1.18 | |
| Resistance difference | Rm1-Rm2 | -1.5 | ------ | +1.5 | Ω |
| Resistance difference | Rt1-Rt2 | -3.5 | ------ | +3.5 | Ω |
| Temperature coefficient (Rm,Rt) 20°C-100°C | α | 0.0050 | 0.0055 | 0.0060 | /°C |
| Geometry factor | G | 3.9 | mm | ||
| Thermal loss coefficient | β | 0.101 | mW/°C |
MTCS2601 Thermal Conductivity Sensor Absolute maximum ratings
| Description | Symbol | Min | Typical | Max | Unit |
| Heating current in (Rm1+Rm2) – Air; Ta=23°C | Ih | 6.2 | mA | ||
| Heating Power (Rm1+Rm2) – Air; Ta=23°C | P | 15.8 | mW | ||
| Membrane temperature | Tm | 180 | °C | ||
| Ambient temperature | Ta | -20 | 100 | °C | |
| Humidity - No condensing | RH | 0 | 100 | % |
DATA SHEET