PRODUCT OVERVIEW
OI-6900-X-X-T-2B OPS_GUIDE_REV 1.1
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PRODUCT OVERVIEW
1.1
INTRODUCTION
The Otis Instruments, Inc. (Otis) GEN II Model OI-6900-X-X-T-2B (OI-6900) Non-Explosion-Proof Ambient Air Toxic
Gas Detector is designed to detect a wide range of toxic gases in many environments. The OI-6900 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. Non-
intrusive interface with the OI-6900 is made possible by use of the Otis Magnetic Tool included in the purchase of
the device.
The OI-6900 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 to account for sites that may have a constant low level of gas always present
allowing the OI-6900 to maintain a long battery life. When the gas level drops below the set-point the reporting rate
will return to once every minute. The OI-6900 display screen will always show the present concentration of gas being
detected by the sensor assembly. More information about the Background Gas Set-point is found later in this manual.
This document is an operation manual containing diagrams and step-by-step instructions for the proper and safe
installation, start-up, configuration and settings, normal operation, and product maintenance of the OI-6900.
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 Otis Magnetic Tool, will
replace the directive of the button-press actions. To apply the Otis 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.
NOTICE
This document should be read in its entirety before the initial operation of the product.
Should a question arise during the use of the product, this document will serve as a first reference for the end-user.
For inquiries beyond the information and instructions provided within this manual, contact the sales representative
of this product for assistance.
