RKI Instruments 65-2481RK - Manual (Page 7)

65-2481RK Multi Point Detector • 3
Description
This section describes the multi-point detector. It consists of the detectors, the terminal
strips, the conduit seal, and the junction boxes.
Detectors
This section describes the components of the various detectors that are used with each
model of the 65-2481RK.
61-0140RK LEL Detector
Figure 1: 61-0140RK LEL Detector Component Location
The combustible gas detector is a catalytic type detector that produces an electrical output
that corresponds to the detection range. It is packaged in a 1/2 inch NPT nipple with a
sintered metal flame arrestor on one end allowing ambient air to diffuse into the detector.
The flame arrestor also contains any sparks which may occur within the detector. The 1/2
inch NPT mounting threads at the top of the detector allow you to install it in the bottom
conduit hub of the junction box with the use of a 3/4 in. x 1/2 in. NPT reducer. A
rainshield screws onto the bottom of the detector (flame arrestor end). The rainshield
helps protect the detector from rain and debris in the monitoring environment. Four color-
coded leads extend from the top of the detector. The leads allow you to connect the
detector to the terminal block.
LEL Detector