Figure 1: iSIC OEM bottom


The enclosure that houses a NexSens iSIC PCB, and wiring is a durable NEMA 4X enclosure. It measures 8.5” x 6.5” x 5.5” (inches) and is constructed of heavy-duty high-impact, corrosion resistant thermoplastic material. The enclosure is UV stabilized for outdoor use and complies with UL-94 minimum V-2 requirements.

This enclosure is certified for both indoor and outdoor use.  Falling dirt, rain, sleet, snow, windblown dust, splashing water, hose-directed water, and corrosion will not damage the enclosure.  In addition, the box will be undamaged by the formation of ice on the enclosure. A number of connectors are located externally on the iSIC-OEM enclosure:

▫   Expansion Plugs – Can be replaced with conduit or half-inch gland fitting for connecting sensors to the internal data terminal pins. Two gland fittings are supplied with each iSIC to allow cables to enter the inside of the iSIC enclosure.

▫   MS8 – Allows for the connection of RS232 Port 0 or RS485.

RS485 connections are available through the MS8 connector for iSIC data loggers with Hardware version 6 or earlier. The MS8 is located on the outside of the iSIC – OEM enclosure.

On iSIC data loggers with hardware version 7 or beyond, the MS8 connector is mostly used for connecting water quality sondes or other sensors. Host RS485 is available through the iSIC – OEM DB9 port, while Sensor RS485 is available through the iSIC – OEM digital terminal strip.

▫   MS4 Dual power and Communication Connector – Connector for iSIC communication. This connector allows for RS232 direct connect and power with just one cable into the iSIC-OEMs, etc.

▫   Ground Lug – Connector for copper ground wire from A38 ground kit.




iSIC OEM Internal

Figure 2: iSIC OEM internal


A number of connectors are located internally on the iSIC enclosure:

▫   Fuse – A fuse is located at the top right edge inside the iSIC enclosure.  This fuse connects to the external power source. The iSIC-OEM comes preinstalled with a 3A time delay or slow blow fuse, max rating for 250VAC.

Digital and Analog Phoenix connectors – Two 16-pin un-pluggable terminal strip connectors are located inside the enclosure.  Power and sensors will be connected to these terminals.  The connector on the left is for connecting digital and smart sensors.  The connector on the right is for connecting analog sensors.


REV: 13H02




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