MSA MultiGard 5000, Руководство пользователя

Страница: 12 / 132

3103-1001 Rev. 0 4
Sample text related to the dual MultiGard 5000 Systems.
This information can be ignored by users of single MultiGard 5000 Systems.
1. General Information
1.1 Introduction
The MultiGard 5000 Gas Sampling System family consists of six distinct configurations; four
single system configurations (an 8 point system, a 16 point system, a 24 point system and a
32 point system) and two dual system configurations [a dual 8 (“D8”) point system and a dual
16 (“D16”) point system]. A dual system system uses a single operator interface to run two
otherwise independent flow systems identified as System A and System B.
Dual system systems may require additional explanation and therefore, in the appropriate
section, the information provided will be visually distinguished by the text box style as shown
below.
The MultiGard 5000 Gas Sampling System draws gas samples from multiple sample points, and
then passes the gas across up to four sensors/analyzers. The sensors/analyzers may be any variety of
sensors/analyzers manufactured by MSA. Depending on the quantity and type of sensors/analyzers,
they may be mounted internally or externally. At the same time the unit is drawing gas from a
sample point, it is also drawing gas from the next sample point to be sampled. This is decrease the
sample time necessary to achieve an accurate sample reading.
The controller for the MultiGard 5000 Gas Sampling System is the Allen Bradley CompactLogix
L24ER controller. It performs all the necessary tasks associated with sequencing, alarming, fault
conditions, etc.
The user interface is a 10.4” LCD display screen with touch-screen entry. It allows for operator
control of the system. This includes but is not limited to, the entry of user controlled parameters,
silencing the horn and acknowledge alarms.
This manual refers to the standard Installation Drawing, Flow Diagram and Field Wiring Diagram of
the system. Refer to the MultiGard 5000 Custom System Definition data sheet in Section 1 for a
detailed list of the specific drawing numbers that apply to your system.
This manual covers the operation of the MultiGard 5000 Gas Sampling System. Refer to the
appropriate manuals in Section 3 for the operation of the individual sensors/analyzers that are a part
of the system.