Calibration And Testing; Bump Testing And Calibration; Bump (Functional) Testing - Honeywell BW RigRat User Manual

CHAPTER
13

Bump Testing and Calibration

To ensure greatest accuracy and safety, only bump test and calibrate in a fresh air environment.
The monitor should be calibrated every time it does not pass a bump test, but no less frequently
than every six months, depending on use and exposure to gas and contamination, and its
operational mode.
Calibration intervals and bump test procedures may vary due to national legislation.
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Honeywell recommends using calibration gas cylinders containing the gas that is
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appropriate to the sensor you are using, and in the correct concentration.
When a bump test is done manually, the instrument makes a pass/fail decision based on sensor
performance, but the user still has the responsibility to make sure all the alarms are enabled and
functional.

Bump (Functional) Testing

The same gas is used for a bump test as for calibration. A constant-flow regulator producing 0.5
liters per minute should be used, and the calibration adapter must be installed on the diffusion
model of the BW RigRat. The instrument must be connected to a cylinder of calibration gas with
supplied tubing.
Note: If LEL% and VOL% sensors are installed always bump test the LEL% sensor first.
1. Turn on your BW RigRat by pressing and holding the button, and allow the instrument to
boot up fully until the main measurement screen with sensor names and readings is
shown.
Important! Make sure all of the instrument's sensors have warmed up before performing a
bump test. The instrument will take the time to warm up the sensors prior to enabling
access to bump test menus. You can tell a sensor has warmed up if you see a reading next
to its name on the display. If it has not warmed up, you see three dashes ("---") next to it.
2. Diffusion: Install the calibration adapter on the BW RigRat by setting it on over the sensors
and pressing until it is snug against the surface of the instrument.
Pumped: Connect tubing from the filter's inlet to the regulator on the gas cylinder.
BW RigRat

Calibration and Testing

75 User Manual