RKI Instruments GD-K7D2 (24 VDC) - Manual (Page 6)

2 • Model GD-K7D2 (24 VDC) Sample Draw Transmitter
Description
This section describes the components of the GD-K7D2. The GD-K7D2 consists of three
separate sections: the cover, the detection unit, and the installation bracket. The detection
unit (front section) includes the flow system and gas detection components. The L-shaped
installation bracket (rear section) includes installation components including a terminal
strip, tube fittings and a card edge connector socket.
The detection unit and installation bracket are secured together by a captive screw located
in the bottom right of the detection unit. The detection unit’s main circuit board plugs into
the socket on the installation bracket. The socket is above the terminal strip.
Figure 1: Sections of the GD-K7D2
A hydrophobic sample filter is also provided with the GD-K7D2 for installation near the
sample in fitting. The filter scrubs particulates out of the sample stream and keeps water
and many other liquids from entering the GD-K7D2 flow system.
Cover
The painted steel cover slides over both the detection unit and installation bracket. It is
radio frequency (RF)- and dust-resistant. A thumbscrew on the front of the cover near the
bottom secures the cover to the installation bracket (see Figure 1). The cover includes a
label on the front that indicates the target gas and detection range of the GD-K7D2.
Cover
Detection Unit
Installation Bracket