Teledyne 9060Z - Zirconium oxide flue gas oxygen analyzer - Manual (Page 17)

Model 9060Z Manual
17
4.3 INSTALLING THE AUXILIARY THERMOCOUPLE
Weld a 1/2 inch BSP mounting socket to the flue within about 300 mm (12”), and upstream of the
oxygen probe. The thermocouple should be of similar length to the oxygen probe to prevent flue
temperature distribution errors.
The thermocouple should be connected to terminals 7 & 8. These terminals will not be available for an
auxiliary thermocouple if a second probe has been installed.
4.4A SHIELD CONNECTIONS
All external wiring to the 9060Z transmitter should be shielded. Do not connect shields at the field
end. Simply clip off and insulate. There are two M4 earth screw terminals available in the 9060Z
transmitter. An extra terminal strip may be required to connect all shields together. This should be
supplied by the installer.
4.4B EARTH CONNECTION (PE)
The PE (protective earth) input connection must be made to the earth stud on the right hand side of
cabinet. The PE input connection must be the first connection onto the earth stud and it must be
secured by a separate nut and spring washer. All other earth connections (bonding connections) can
be made on either of the two earth studs in the base of the cabinet.
The transmitter MUST be securely earthed.
Assembly of the PE and bonding connections on the earth stud
4.5 ELECTRICAL CONNECTIONS
All wiring should comply with local electrical codes. The printed circuit boards are fully floating above
earth. The incoming safety earth (PE) must be connected to the primary earth stud in the right hand
side of thebase cabinet.
The local fuse for the mains power supply, the isolation switch and the supply wiring must all comply
with the electrical safety codes and must only be installed by qualified technicians. All earth and shield
connections should be connected to the earth screws inside the case.