A new transmitter design, Model AHT-200, uses thermal conductivity sensors to measure moisture content at elevated temperatures up to +200°C. The unit outperforms conventional capacitive/resistance humidity sensors in harsh environments and it recovers from deposits and condensation. Washable and easy to clean. Useable with most gases. The range is 0 to 130 grams/m³; accuracy is ±3 grams/m³ which corresponds to ±2.3% RH at 35 grams/m³ at 60°C; output is 0-5V, 0-10V, or 4-20mA.