15. After a successful calibration, remove the tubing from the
Flow Controller and remove the Flow Controller from the
cylinder; return all items to their appropriate location in the
Calibration Kit.
16. For Calibration Kit 54 diffusion Hydrogen Chloride:
a. After a successful calibration, flush the flow control
regulator and tubing with 100% Nitrogen for five
minutes. Use this flow control regulator with Hydrogen
Chloride gas only.
b. Store the flow control regulator and tubing in the
desiccated sealed bag included in Calibration Kit 54 or
equivalent dry container.
Procedure Number 2
This procedure uses the items found in Calibration Kit 41 and 43.
Zeroing
1. If Using the Zero Cap (FIGURE 3-12):
If the ambient air is suitable, with no traces of the gas of
interest, place the zero cap (P/N 813774) over the sensor
inlet and wait two minutes; otherwise, use zero gas.
2. If Using Zero Gas Cylinder:
a. Locate the zero gas cylinder and the .25 LPM Flow
Controller (P/N 478359).
b. Screw the Flow Controller onto the top of the zero
gas cylinder.
c. Locate the Tube Assembly (P/N 711112).
d. Push the smaller end of the Tube Assembly over the Flow
Controller gas outlet.
• Ensure tubing completely covers the gas outlet
(FIGURE 3-7).
e. Connect the other end of the tubing over the SensorGard
inlet (FIGURE 3-13).
f. Turn on the gas flow by turning the knob on the
flow controller.
• Notice the open arrow on the flow controller knob.
3. Point the Calibrator at the Toxgard II Gas Monitor display
(FIGURE 1-2) and press the Calibrator or Controller
Chapter 3, Calibration
3-21
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