Sierra Monitor Corporation 4501-04 Model 4501-XXToxic Gas Sensor Module, Page, 1.4MECHANICAL

Model 4501-XX Toxic Gas Sensor Module

1.4MECHANICAL

The sensor module is comprised of the following three primary components:

1.4.1ENCLOSURE

Explosion proof, rain-tight stainless steel electrical housing with three ¾” FNPT conduit hubs. The enclosure cover has a viewing window. The 3 conduit hubs combined with the rotatable faceplate enable the user to mount the module in a variety of configurations. See Figure 1-2 for details.

1.4.2TRANSMITTER ELECTRONICS

Electronic Assembly consisting of one printed circuit board assembly mounted under a cover plate. Wiring connections for power and signal interface are located on the back side of the display.

1.4.3SENSOR ASSEMBLY

The sensor assembly includes a stainless steel, explosion proof, housing containing the gas sensor and a wiring harness for connection to the transmitter. The sensor assembly threads into one hub of the enclosure. The exposed end of the sensor assembly is threaded to allow connection of a rain-shield or calibration gas delivery fitting.

1.5INTERCONNECT WIRING

Not supplied with the sensor module, but necessary to the installation and operation is the two conductor wiring which connects the module to its power source and controller. Before this wiring is installed it is important to read and understand the control system installation instructions to determine wiring requirements and alternatives.

1.6POWER REQUIREMENTS

The 4501-XX module operates on DC power between 14 VDC and 30 VDC. The DC power must be supplied by the loop controller.

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