User Manual

ImpactXtreme Operator’s Manual 8 March 2013
Calibration
Calibration is a two-step procedure that determines the measurement scale for the detector’s
response to gas. In the first step, a baseline reading is taken in a clean, uncontaminated
environment (see Zero Calibration). In the second step, the sensors are exposed to known
concentrations of gas. The detector uses the baseline and known gas concentrations to
determine the measurement scale.
BW Technologies by Honeywell recommends to calibrate the detector before first-time use and
then on a regular schedule, depending on use and sensor exposure to poisons and contaminants.
BW Technologies by Honeywell recommends to calibrate sensors regularly and at least once
every 180 days (6 months).
Before you begin
1) Have ready the calibration adapter and calibration tubing cut to a maximum 1.0 metre (3
foot) length.
2) Ensure access to calibration gas cylinders.
3) Use premium-grade calibration gases.
4) Use gases approved by the National Institute of Standards and Technology, or equivalent.
5) Do not use gas cylinders past their expiration date.
6) Verify that the gas you intend to use matches the span concentration values set for the
monitor.
Related Topics
1) Connect/Disconnect Gas Cylinder
2) Zero Calibration
3) Troubleshooting Calibration
Calibrate only in a normal atmosphere (20.9% O
2
) that is free of hazardous gas. Do not
calibrate in a hazardous area.
The maximum tubing length for calibration is 1m (3 ft).
Calibrate the Detector
1) Move to a normal atmosphere (20.9% O2) that is free of hazardous gas.
2) Activate the detector, if necessary.
3) Begin the calibration.
a) With the detector in normal operating mode, press to open the main menu.
b) Press to scroll to Calibration, then press to open the calibration menu.