The E29H Baratron® Etch Manometer is temperature controlled to either 45°C or 100°C, accurate to ±0.12% of Reading, and includes efficient temperature control electronics to provide superior long-term stability and repeatability. It has an optional external zero input, which accepts a voltage equal to and opposite to the zero offset, to provide a zero output at zero pressure. The optional “At Temperature” LED/switch indicates that the sensor is at the controlled temperature (either 45°C or 100°C). The E29H Etch Manometer is available in Full Scale ranges down to 50 mTorr for 100°C and to 20 mTorr for 45°C units, to better accommodate today’s lower process pressures. Based on the well-established Baratron capacitance manometer technology, the sensor’s wetted surfaces are Inconel® for corrosion resistance. The modern stainless steel enclosure provides a cleanroom compatible product. The E29H is fully compatible with earlier MKS’ Types 629A, 629B, 629D, E29B, E29D and E29F Baratron capacitance manometers, as well as many competitive products.