Endura AZ series integral and remote transmitterCombustion oxygen monitor 7 HART®-ProtocolIM/AZ20E–EN Rev. F 697.2 HART-Protocol ConnectionFig. 7.1 shows HART-Protocol connection details for transmitter installations.Note. Current output connection details are common for both remote and integral transmitters. The HART-Protocol is also available optically via the IrDA interface on the front of the transmitter.Fig. 7.1 HART-Protocol Connection (Remote Installation Shown)Hand-held Terminal(for example, ABB Mobility DHH801-MFC)4 mA Current Output (Multidrop Connection)4 to 20 mA Current Output (Single Connection)PC Connection(USB or RS232)MultidropConnectionProbe250 Minimum LoadSingleConnectionHART Connections atTerminal Block – seeSection 4.8, page 21for Remote systemsor Section 4.11, page24 for Integralsystems