OPERATION OF ACCESSORIES
3-5
3.2 Optional Accessories
1) Dilution Fitting
The user may wish to install a dilution fitting on the inlet
to dilute the gas samples. One application for a dilution
fitting is to measure organic gas when the concentration
exceeds the upper limit of the sensor range.
Make sure to set the dilution ratio in the programming
mode (see Section 4.7.9) so that the correct gas reading
will be displayed when the dilution fitting is used.
WARNING: To use a dilution fitting, the user
must have the monitor located in a clean
atmosphere outside the confined space and use a
remote access probe or Tygon tubing to measure
the gas concentration inside the confined space.
2) Calibration Adapter
The calibration adapter for the MiniRAE 2000 is a simple
6-inch Tygon tubing with a metal adapter on one end.
During calibration, simply insert the metal adapter into the
regular gas inlet probe of the MiniRAE 2000 and the
tubing to the gas regulator on the gas bottle.
3) Calibration Regulator and Flow Controller
The Calibration Regulator and Flow controller is used in
the calibration process. It regulates the gas flow rate from
the Span gas cylinder into the gas inlet of the MiniRAE
2000 monitor during calibration process. The maximum
flow rate allowed by the flow controller is about 0.5L/min
