The HATXDR series multi point rigid duct average temperature transmitter incorporates numerous high accuracy platinum RTD’s at equal distances and encapsulated in a 6.35 mm (0.25â€) OD, 304 series stainless steel probe and is available in various lengths. All probes provide excellent heat transfer, fast response and resist moisture penetration. A transmitter that provides a high accuracy signal with excellent long term stability, low hysteresis and fast response is available with various ranges. It is available with a variety of enclosure types.