Advantages
Dual Oxygen Analyzers
The alarm set-points provide an operational band that covers all acceptable oxygen concentrations. If the oxygen level at the sensor crosses the adjusted set-point of one of the alarms, that alarm will cause the switching of relay contacts. The standard factory setting of the two alarms provides a CAUTION alarm at 20% oxygen and a DANGER alarm at 19.5% oxygen. To cover special situations, a limited amount of adjustment is possible. Both alarm set-points are factory set (internal) to prevent tampering or resetting by unauthorized personnel. When insufficient oxygen concentration triggers either alarm, a red panel light and an audible annunciator are energized. The alarms remain energized until the oxygen concentration has been elevated above the trigger point.
Battery Backed Standby Power
An optional battery backed standby power configuration is offered for potential power failure or “brown out” conditions. With this feature, power outages will not interfere with a proper working alarm. The standby power source uses a rechargeable lead acid battery. If the AC power is interrupted, the stand-by power supply automatically supports analyzer operation. Periodic testing of the battery pack is possible through a simple pushbutton inside the instrument’s control panel.
Easy to Install
The unit is designed for easy installation. Mount the unit to a wall or bulkhead, connect AC power and the installation is complete. The unit is lightweight with a slim profile, eliminating the need for special reinforcement in most installations.
Maintenance Free Sensor
The 3350 uses a patented Micro-fuel Cell to measure the concentration of oxygen in breathable air. This sensor is a sealed electrochemical transducer with no electrolyte to change or electrodes to clean, so it is virtually maintenance free. When it reaches the end of its useful life, it is easily replaced.
Simple Calibration
Periodic calibration is quickly and easily accomplished with no specialty gas requirements. The Micro-fuel Cell produces a linear output from 0 to 100% oxygen so ambient air or readily available instrument grade air (20.9% oxygen) can be economical used for calibration. Also, since the Micro-fuel Cell has an absolute zero, no zero gases are needed.
Remote Probe
A special version of the unit is available with a remote-mountable oxygen probe. This option permits the user to install the oxygen probe inside the control room, while the control unit is mounted outside. This allows personnel to see the analyzer and confirm a safe level of ambient oxygen is present before entering the control room.
