Macurco CX-6 Manuel D'instructions page 36

Macurco CX-xx Manual (Rev-1.0) Eng
• When performing a calibration or calibration verification test (bump test) only use certified calibration gas at
the required concentration level. Do not calibrate with expired calibration gas.
If the instrument cannot be calibrated, do not use until the reason can be determined and corrected.
•
Do not cover or obstruct display or visual alarm cover.
•
Ensure sensor inlets are unobstructed and is free of debris
•
A Field Calibration Kit, CX6-FCK, is needed to complete gas test. These are available through local distribution or
from Macurco.
NOTE: CX-xx must be tested or calibrated at regular intervals in accordance with the requirements of the National
Fire Protection Association (NFPA) 720 or local code requirements. It is recommended to test or calibrate CX-xx at
least annually.
Contents of the FCK
CX6-FCK: (2) gas Cylinders
•
o 200 ppm Carbon Monoxide
o 5 ppm Nitrogen Dioxide
• 0.2 LPM Gas regulator
• Two feet of tygon tubing
CX-6-CH calibration hood
•
FCK Information
Several detectors can be calibrated with one FCK. The only limitation is the amount of gas in the cylinder. The 58-
liter cylinder has approximately 290 minutes of continuous calibration run time. Replacement cylinders are
available. The gas cylinder should be replaced when the pressure gauge on the regulator shows 25-psi or less.
Note: For optimum test results it is suggested that the unit be in clean air, green light on, and be in a low ambient air
flow.
It is critical to perform zeroing of the sensor in clean air. In the situation or application where the absence of target
gas (CO or NO ) cannot be guaranteed, it is suggested to use Zero Air (20.9% O
2
zeroing of the sensor.
REV – 1.1 [34-2900-0512-0 ]
balance nitrogen) calibration gas for
2
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