XP Series Personal Gas Detector
1
1. Span Calibration (Toxic Versions Only)
Calibrate the detector at least every 12 months (O
2
, H
2
S, CO), depending on use and exposure to
contaminants. The other toxic gases (Cl
2
, H
2
, HCN, NH
3
, NO
2
, SO
2
) should be calibrated at least every
6 months. To carry out the span calibration the user requires the following additional equipment to be
available, which can be purchased from Honeywell Analytics.
Gas cylinder containing a known concentration calibration gas as follows:
Toxic Gas
Recommended
Calibration Gas
Concentration
Calibration Gas
Concentration Range
H
2
S
25 ppm in air or N
2
20-30 ppm
CO
100 ppm in air or N
2
70-200 ppm
See Section 22 for other toxic gases
A gas regulator supplying the gas at 300 ml/min flow rate
Tubing for use between the regulator and the test adaptor (See Section 24, Calibration
Accessories)
The following is a list of calibration times (in seconds) for the different toxic gases. The detectors are
pre-programmed with the appropriate calibration time.
Toxic Gas
Calibration
Time
Toxic
Gas
Calibration
Time
CO
60
H
2
S
60
Cl
2
300
NH
3
300
H
2
120
NO
2
180
HCN
250
SO
2
120
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