MSA PrimaX IR, Руководство по эксплуатации

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PrimaX® IR
8
Description
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2 Description
The device is designed to sample the environment at the installed location and alert the user to poten-
tially dangerous levels of hydrocarbon gas. The device is shipped factory calibrated and is labeled with
target gas, calibration gas and span setting information.
The output of the device is a standard 4 to 20 mA with HART. The 4-20 mA signal communicates the
primary measured value using the 4-20 mA current loop. Additional device information is communi-
cated using a digital signal that is superimposed on the analog signal. The device is compliant with
HART Communications Foundation (HCF) Revision 7.0 format. Commercially available hand-held
communicator devices or PC applications can be used to communicate with the device using the
Device Description (DD) file that is available from the HART Communications Foundation website
(www.hartcomm.org).
2.1 User Interface
This device does not provide a visual display of information. The gas level and basic device status are
available via the 4-20 mA output signal. Other detailed device status is available via the HART signal.
Details about this interface can be found in the PrimaX IR HART Specification located on the product
CD shipped with the device.
The optional calibration cap provides an LCD display for easy and intuitive calibration of the device.
The proper usage of this calibration cap is described in chapter 4.2.
The device should be installed where gas leaks are anticipated. The installation position depends on
the gas density, either in the upper area of the room beneath the ceiling for gases lighter than air, or
close to the ground for gases heavier than air. Also consider how air movement may affect the ability
of the device to detect gas. Testing for ventilation patterns may be helpful in establishing locations for
the device in enclosed areas.
2.2 Package Contents
The device will be delivered with the following items in the shipping carton:
• PrimaX IR sensor (316 Stainless Steel)
• Environmental guard
• Quick Start Guide
• Product CD, including this instruction manual, HART specification and installation drawing
Before beginning the installation, check that the delivered components are complete
and correct, referring to the shipping documents and the label on the shipment carton.