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Overview
AirLink 6940XP Operator’s Manual
Overview
The RKI Instruments, Inc. AirLink 6940XP explosion-proof ambient air hazardous gas detector is
designed to detect up to 4 different types of toxic gases in potentially hazardous environments.
This product is UL certified as Class I, Division 1, Groups B, C, and D. The AirLink 6940XP
features non-intrusive magnetic switches that allow for complete system configuration, regular
calibration, and product maintenance to be performed in the field, without opening the enclosure
and breaking the seal of the enclosure, thereby compromising the explosion-proof rating of the
device. Non-intrusive interface with the AirLink 6940XP is made possible by use of the magnetic
tool included in the purchase of the device.
In this manual, the instructions reference the use of push-buttons, located on the front panel of the
device. In certain environments, the activation of the non-intrusive magnetic switches, through
the use of the magnetic tool, will replace the directive of the button-press actions. To apply the
magnetic tool, hold the tool to the side of the device enclosure adjacent to the push-button that
you wish to activate. When the magnetic switch is toggled, an on-screen indicator will appear on
the display screen, signifying that a connection was made.
The AirLink 6940XP continuously monitors the gas level of the surrounding environment and
reports once every minute. The reporting rate will increase to once every five seconds when the
detected gas is above the Background Gas set-point. This set-point is adjustable (per sensor) to
account for sites with a constant, low-level of gas, allowing the AirLink 6940XP to maintain a
long battery life. When the gas level passes below or above (for O
2
) every sensor’s set-point, the
reporting rate will return to once every minute. The AirLink 6940XP display will always show the
present concentration of gas being detected by the sensor assembly.
This document is an operation manual containing diagrams and step-by-step instructions for the
proper and safe installation, start-up, configuration, normal operation, and product maintenance
of the AirLink 6940XP.
NOTE:
This document should be read in its entirety before the initial operation of the product.
