ChemDAQ Steri-Trac, Operation Manual

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14
DAQ
The DAQ requires a dedicated location where main powers is available; and is often placed in the
supervisor’s office. The DAQ is a Windows®
1
based computer and so the environmental requirements
are similar to other desk top computers. In general, the DAQ should be located indoors, away from
condensing humidity. The DAQ requires external power (110/220 V, 60/50 Hz).
Remote Mounted Sensor
The Steri-Trac monitor is a small compact instrument, but for some applications an even smaller sensor
device is required very near the source of the potential hazardous gas exposure. In these applications, the
sensor can be remotely mounted and the monitor body can then by mounted nearby at a more convenient
location.
Mounting the sensor remotely is very simple! The sensor mount is attached to the surface where it is
needed. Attachment may be via screws using the built in key-holes in the back of the sensor mount for
mounting to a vertical wall surface. Some surfaces are unsuitable for screw attachment or a vertical
mounting surface is not available. For these applications, the Remote Sensor can be attached to flat
horizontal surfaces with Velcro®
2
or similar attachment material.
The signal cable feeds into the back of the remote mount and is connected to the monitor via the Wall
Mount. as is shown in Figure 3 above.
Once the sensor mount has been placed where needed, the monitor body can be mounted and powered
on a nearby wall as described earlier. The cable from the rear of the sensor mount can then be run back
to the monitor body and connected via the wall box (screw terminals).
The sensor module is then snapped into place on the sensor mount and the monitor is then ready for
service. When it is time for the sensor module to be recalibrated, the old sensor module is removed and
the new one snapped into place, in similar manner to plugging the sensor module in the monitor body.
1
Windows® is a trademark of Microsoft Corporation
2
Velcro is a registered trademark of Velcro Industries B.V.
Remote Sensor Mount (Front)
Shown with Sensor
Remote Sensor Mount (Top and Back)
Without Sensor
Mounting
Key-Hole