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MAN-0076 Rev 05 Millennium II
December 07, 2012
Net Safety Monitoring Inc
INTRODUCTION
Building on the outstanding legacy of the Millennium Series, Net Safety’s latest innovation in this line of continuously
evolving industrial transmitters and sensors, the Millennium II, pushes the boundaries of what you can expect from
your detection system. Combined with state of the art “Smart” sensors, users will receive a detection system which is
both versatile and reliable for fast, accurate and continuous monitoring of gases in extreme environments.
THE PRODUCT
TRANSMITTER/CONTROLLER
A Millennium II gas detection system is composed of a field mounted transmitter\controller and Millennium II
series sensors which may be integrally mounted to the controller or remotely mounted as far as 2000 feet away.
The transmitter is certified for use in hazardous locations and is available as a single or dual sensor system. All
operator controls including configuration and calibration can be accessed without opening the enclosure by using other
communication devices and the attached magnet to actuate reed switches. If the area is non-hazardous and the
enclosure (housing) is open then the operator may choose to use push-button switches and analog output test jacks on
the face of the electronics module. Available outputs are: conventional 0.0 to 20mA analog, Analog/HART,
electromechanical relays, solid-state relays or Modbus RTU digital.
A dual channel transmitter is available with "peak picking" functionality where there is only one analog output and this
analog output follows the signal from the sensor that is responding to the highest gas concentration. This is useful in
conserving analog input capacity on connected user equipment.
THE MANUAL
This manual has been designed to guide users through each procedure, ensuring that transmitters and sensors are
configured, operated and maintained properly. Guidelines and warnings are included to ensure safe and proper
functioning of the equipment. The manual gives the overall operational and functional features of transmitters
with sensors and may not have sensor specific information. Refer to sensor manuals for information specific to
each sensor including detailed calibration instructions. If you encounter any problems, see the troubleshooting
section of this manual or contact factory.
Special conditions of use:
M2a-b-c, Millennium II Transmitter with enclosure:
1. In order to maintain the performance of the system, the sensor to which this instrument is connected
shall also comply with the requirements of EN 61779-1 and EN 61779-4
TX-M2a-b, Millennium II Transmitter Electronics module only (w/o enclosure):
1. If the Millennium II Transmitter is installed as Category 3 equipment, then it shall be installed in an
Enclosure which maintains an ingress protection rating of IP54 and meets the enclosure requirements
of EN 60079-0.
2. In order to maintain the performance of the system, the sensor to which the instrument is connected
shall also comply with requirements of EN 61779-1 and EN 61779-4