RKI Instruments GD-K8A4X - Manual (Page 5)

Model GD-K8A4X Sample Draw Transmitter • 2
Description
This section describes the components of the GD-K8A4X. It consists of the enclosure, the
sensor and amplifier from a GD-K8A, and a wiring terminal strip.
Figure 1: Component Location/Wiring
Enclosure
The enclosure is a type NEMA 4X plastic enclosure designed for use in areas that are
subject to rain or hosing down. A mounting foot is installed in each corner. A hole in the
front door allows the sensor to sample the ambient air by diffusion. A rain shield installed
over the hole protects the sensor from water. A 3/4” conduit hub is located on the bottom
of the enclosure for wire entry.
Sensor/Amplifier
The sensor/amplifier from a GD-K8A is mounted to a sensor plate. The sensor plate is
mounted to a mounting plate with four standoffs. See the GD-K8A Operator’s Manual for
a complete description of the sensor and amplifier.
Wiring Terminal Strip
A three point terminal strip is located near the bottom of the enclosure on the mounting
plate for connections to the controller.
3/4" Condui t Hub
Factory
Us e Onl y
(mA Output)
TP2 (-)
TP1 (+)
Factory Adj us t
Gain Pot (Factory Adjus t)
Zero Pot
Span Pot
Note: Shown W ithout Door
+24 VDC
Wi ring Termi nal
Strip
Sens or
Feedback (-)
Sens or Keeper