47
Calibration and Bump
ALTAIR io360
US
7
Calibration and Bump
WARNING!
Detectors will
not
be performing hazardous gas sensing operations while calibrating.
Failure to follow this warning can result in serious personal injury or death.
The detector must equilibrate to room temperature before bump or calibration.
Event Induced Calibration
Calibrate detector(s) each time the batteries are changed, after every factory reset of the detector(s), and
every time the detector(s) is subjected to physical shock.
Calibration Time Guide
If the detector(s) is bump tested daily, MSA recommends calibrating the detector(s) at least every six
months. MSA recommends detector calibration every 30 days if bump testing occurs infrequently. Bump test
frequency may be stipulated by national regulations.
Calibration Certification
All applicable inspections, testing, and calibrations were performed using NIST traceable equipment, where
available, in accordance with MSA's ISO 9001 Certified Quality System.
7.1
Bump Test
WARNING!
Perform Bump Test per the instructions in this manual.
Failure to perform this test can result in serious personal injury or death.
This test quickly confirms that the gas sensors are functioning.
7.1.1 Bump Test Frequency
Bump test frequency may be stipulated by national regulations. In the absence of national standards,
corporate regulations must stipulate bump test frequency. Bump testing must be conducted at a minimum
before each deployment of a device.
When use conditions permit, bump testing should be performed daily.
If tested, the device must pass the bump test. If it fails the test, perform a calibration before using the device.
A bump test must be performed more frequently than daily if any of the following occur:
• The device is subjected to high levels of contaminants.
• The device is subjected to rain or water spray.
• The tested atmosphere contains the following materials, which may desensitize the combustible gas
sensor and reduce its readings:
•
Organic silicones
•
Silicates
•
Lead-containing compounds
•
Hydrogen sulfide exposures over 200 ppm or exposures over 50 ppm for one minute
•
Rain
• The SensorShield is not installed.
• The device is exposed to conditions that could lead to blockage of the sensor path (including but not
limited to snow and ice storms, icing conditions, rain or water spray, dusty or dirty environments).
