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Tech Note: Unreleased Date: October 22, 2013

and attach the bare (-) TC wire at terminal four. Secure the terminal box cover

by screwing it on clockwise and tighten the set screw with an allen wrench.

Zirconia Cell Installation

Place the metal o-ring (7) on groove at the base of the zirconia cell (6) and

gently push the cell into the tip of the probe while turning the cell clockwise at

the base. Hook the calibration j-tube (5) into the contactor plate (4), the long

end of the j-tube should be in the center of the contactor plate. Feed the filter

(32) over the long end of the j-tube on the bottom end of the contactor plate

(4). Take the assembly consisting of (4), (5) and (32) and place it on the tip of the

probe, the long j-tube end should go in the center of the zirconia cell and the

short end should go in oval hole in the base plate of the zirconia cell. If using the

type two oil and gas dust filter (1), go ahead and screw it on the tip of the probe

clockwise. Next, use four sets of bolts (2) and nuts (3) to secure the cell to the tip

of the probe, turning them 1/8

of a turn at a time, until 52 inch-pounds of

torque are applied. If using a type one oil and gas dust filter (1), it may now be

screwed on the tip of the probe and set in place using a pin spanner.

YOKOGAWA ZR22G Technical Note

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