Advanced Photonic. AP Sensing, with its headquarter located in Boeblingen, Germany, is your global solution provider in the Distributed Temperature Measurement (DTS) market. AP Sensing inherits more than 20 years of OTDR (Optical Time Domain Reflectometry) expertise. The heart of AP Sensing’s Distributed Temperature Sensing Solutions is based on key technologies and IP from Agilent Technologies (former Hewlett Packard), the global leader in optical measurement and innovator in optical assembly technique. AP Sensing is ISO 9001 certified. AP Sensing DTS products and solutions address different markets in fire detection, power cable monitoring, oil & gas production and geophysical- scientific fields. The company offers high quality, cutting edge DTS technology and application shaped solutions for an excellent value including a comprehensive service.