RKI Instruments GD-K77D4X-XX - Manual (Page 6)

3 • Model GD-K77D4X-XX Sample Draw Transmitter
Inlet Fitting Tubing Stub
A short tubing stub comes factory installed in the inlet fitting. It is used for connecting the
hydrophobic filter. If the hydrophobic filter is not used, or if you install the hydrophobic
filter in a different location, the tubing stub needs to be removed and replaced with
tubing. Do not pull the tubing stub downward to remove it. Instead, unscrew the lower
inlet fitting nut from the fitting body. The tubing stub should come out with the nut. Be
careful not to lose the O-ring that may come out with the tubing stub. Push the tubing
stub up and out of the inlet fitting nut being careful not to lose the ferrule set. Push the
new tubing up through the inlet fitting nut and replace the ferrule set and the O-ring, if it
came out, in the orientation shown in Figure 2. Screw the inlet fitting nut back onto the
fitting body and push the tubing upward until it stops. See Figure 2 for the inlet fitting
layout.
Figure 2: Inlet Fitting with Tubing Stub
GD-K77D
The GD-K77D sample draw detector head is mounted to a plate inside the enclosure. The
GD-K77D sample fittings are factory connected to the sample fittings on the NEMA 4X
enclosure. See the GD-K77D operator’s manual for a complete description of the
GD-K77D.
Installation
This section describes how to install the GD-K77D4X-XX at the monitoring site.
Mounting the GD-K77D4X-XX
1. Select a mounting site that is representative of the monitoring environment. Consider
the following when you select the mounting site.
1/4" Teflon Tube
Back Ferrule
Front Ferrule
Fitting Body
1/4" Teflon Tube
Nut
O-ring