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SERIES 3000 MKII TECHNICAL MANUAL
S3KMKIIMAN_MAN0878_Issue 6_01/2014
The cover can be unscrewed to allow removal of the display module. Beneath the display module is
the terminal module and IS barrier where all electrical connections to the detector are made.
Electrical connections are made via 2 x M20 cable entries or 2 x 3/4"NPT conduit entries (certification
dependent). A suitable blanking plug is supplied which must be used to seal any unused entry.
The smart sensor plugs into the bottom of the transmitter and is secured by the sensor retainer.
The weatherproof cover is fitted over the top of the sensor and screws onto the bottom of the transmitter
enclosure. The weatherproof cover has a spigot that allows the attachment of tubing for the application
of bump test gas.
4.3 Smart sensor
The smart sensor is manufactured from stainless steel and is supplied 100% tested and calibrated
(refer to section for start up procedure). The sensor is serviceable, allowing replacement of the sensor
cell (see section 15 for details of sensor or cell replacement).
The sensor can be ‘hot swapped’ without the need to remove power to the detector (subject to local
regulations and procedures).
4.4 Accessories
Series 3000 MkII has various accessories available as detailed below:
4.4.1 Pipe mounting bracket
The optional pipe mounting bracket (part number SPXCDMTBR) allows mounting of the Series 3000
MkII transmitter to a mounting pipe (horizontal or vertical) of diameter 20.0-80.0mm (0.8"-3.1").
4.4.2 Sunshade / Deluge Protection
The Sunshade / Deluge Deluge Cover (P/N:SPXCDSDP) is an optional accessory that may be fitted to
the integral mounting plate. This accessory is designed to protect Series 3000 MkII from overheating in
exposed hot and arid climates, particularly offering additional protection from thermal shock in Tropical
Environments.
4.4.3 Remote sensor mounting kit
The remote sensor mounting kit (part number S3KRMK) allows the sensor to be remotely mounted via
an IS cable kit, up to 50 feet (15 meters) from the transmitter. The kit includes 50 feet of screened cable,
cable glands and remote terminal box. The cable can be cut to the required length and then terminated
at the remote terminal box. See section 16 for further installation details.
4.4.4 Duct mounting kit
The duct mounting kit (part number S3KDMK) can be used to allow detection of O2, CO, H2 and H2S
gases in ducts. Refer to manual part number MAN0639 for further details.
4.4.5 Calibration gas flow housing
The calibration gas flow housing (S3KCAL) is used to apply calibration test gas to the sensor. It push fits
onto the bottom of the sensor and can be fitted without removing the weatherproof cover. See section
8.2 for further details on calibrating the detector.
