2-13
Standard Calibration
A standard calibration includes a "zero" and "span" procedure as
described in the following procedures. If the user chooses to only
perform a "zero" procedure, they may do so by pressing the ZERO
button on the Calibrator or Controller instead of the CALIBRATE button
as described as follows, or by using the optional push-button calibration
as outlined in Appendix A, "Optional Push-button Calibration". Both the
"zero" and the "span" functions are available on the HART Controller
and are described in Appendix D.
Zeroing
1. If Using the zero cap:
If the ambient air is suitable, with no traces of the gas of interest,
place the appropriate Calibration Kit zero cap over the SensorGard
inlet and wait two minutes; otherwise, use zero gas.
2. If Using zero gas cylinder:
a. Locate the zero gas cylinder and the Calibration Kit Flow
Controller.
b. Screw the Flow Controller onto the top of the zero gas cylinder.
c. Locate the Tube Assembly from the cal kit.
d. Push the smaller end of the Tube Assembly over the Flow
Controller gas outlet and ensure tubing completely covers the
gas outlet.
e. When using Cal Kit 40, connect the other end of the tubing
over the SensorGard inlet.
When using Cal Kit 41, locate the cal cap (with hole for tubing)
and push the tubing through the hole in the bottom of the cap.
Then, connect the end of the tubing over the sensor inlet and
push the calibration cap over the entire sensor inlet.
f. Turn on zero gas flow by turning knob on the flow controller.
3. Point the Calibrator or Controller at the Ultima X Series Monitor
display; press the CALIBRATE button.
NOTE: The zero or calibration process can be aborted at anytime
during the 30-second countdown interval; simply press any
button on the Calibrator or Controller while aiming it at the
unit or by pressing and releasing the push-button if push-
button calibration is available.
NOTE: The 30-second countdown interval is omitted for oxygen
units; it is electronically zeroed.
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