User Guide
Landcal Blackbody Source
Type R1200P
Page 13
4) Disconnect the two thermocouple cables from the two thermocouple
terminal blocks (note which cable is connected to which thermocouple).
5) The earth cable now needs to be disconnected.
(a) For version 1 sources (those manufactured up to and including 2003) the
earth connection is as shown in Fig. 3a. Disconnect the earth cable from
the earth terminal.
(b) For version 2 sources (those manufactured/repaired after 2003) the earth
connection is as shown in Fig. 3b. Disconnect the earth cable from the
target front support stud.
6) Disconnect the 3 power cables (2 white and 1 black) from the terminal
blocks. Note which cable is connected to which terminal
7) Remove the insulation assembly from the base (4 set screws on the
underside) complete with earth connection cable.
To fit a new insulation assembly:
1) Attach the insulation assembly onto the base using the 4 screws on the
underside.
2) Connect the new earth cable to the earth terminal on the base.
3) Connect the 3 power cables (2 white and 1 black) to the large terminal
blocks as shown in Fig. 3a.
4) Connect the two thermocouple cables to the two thermocouple terminal
blocks (referring to the notes of which cable is connected to which
thermocouple).
5) Attach the top cover using the 3 screws on the left hand underside.
6) Connect the mains cable terminals to the terminal block.
7) Attach the front and back panels using the 7 screws on each end.
Fig. 3b Location of earth connection (Front View)
CA970261b
Earth cable (Yellow/Green)
Black body cavity
Target front support studs
