ChemDAQ Steri-Trac, Руководство по эксплуатации

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set Low Alarm level), but not yet at dangerous levels, then the display shows the real time concentration
in yellow and if the gas concentration exceeds concentration at which it is dangerous (High Alarm
level), then the display is red.
LED Display

Has four 1.2-inch high characters, each is a 5 X 7 dot array

Tri-color display – green for normal operation, yellow on low alarm and red on high alarm or
fault.

Updates every second to give real time ppm gas concentrations.
The monitor body also contains a loud alarm horn on the front face of the monitor body, that is activated
whenever the gas concentration exceeds the low alarm level. The alarm can be silenced by pressing the
alarm silence button, also located on the front of the monitor. The display continues to show the real-
time gas concentration (and alarm indication via display color and flash) even after the horn has been
silenced.
Horn

Simple beep indicates low alarm, continuous sound indicates high alarm

Horn can be silenced by pressing alarm silence button
The
Sensor module contains an electrochemical gas sensor and for certain gases, ChemDAQ’s Spot-
On™ Filter that makes the sensor much more specific to the target gas which results fewer false alarms.
This proprietary filter removes common interferents which, for example, for ethylene oxide monitors are
alcohols and carbon monoxide.
The innovative patent-pending sensor module also contains the drive circuit for the sensor including an
on-board battery to eliminate warm-up times that are otherwise common with electrochemical sensors.
In addition, the sensor module contains an EEPROM memory that stores the sensor’s calibration and
configuration data. In order to ensure reliable calibration of the sensor, the sensor module is a
replaceable component and is periodically returned to ChemDAQ for replacement with a freshly
calibrated sensor module.
Remote Sensor Module
Typically, the sensor module is attached directly to the monitor. In certain cases, such as space or weight
constraints, the option to remotely mount the sensor becomes very valuable. The remote sensor module
can be used to position the sensor up to 100 feet from the monitor
The Wall Box
The wall box provides mechanical attachment of the Steri-Trac monitor to a wall. The wall box contains
connection points for AC power wiring, a power supply which converts the AC to 15VDC, the low