Warning

It is extremely important that gases are applied in the order that is specified in this manual.
Failure to adhere to the rules in Table 18. and Table 19. of this manual will result in incorrect sensor readings and possible personal injury and/or property damage.

Note

Manual application of gas types is available for the GasAlertMicro 5/PID/IR detectors only

To manually apply gases for bump tests and calibrations, complete the following:

1. Review Table 18. and Table 19.
2. Determine which gases will be applied.
3. Using Table 18., locate the first gas type (sensor) to be bump tested or calibrated on the top row.
4. Within the far left column, locate the next gas type (sensor) to be bumped or calibrated.

The square where the column and row intersect will indicate which gas should be applied first and a rule number (if applicable).

5. Using Table 19., locate the corresponding rule number. Ensure that the desired order to apply gases corresponds to the gas application rules.
6. Continue to reference Table 18. and Table 19. to ensure the gases will be applied in the correct order.
7. When the correct order is determined, proceed to the Bump Test or Calibration section.

Table 18. Gas Type Application Table

Gases	H2S	CO	CI2 (Bump only	NH3	HCN	NO2	COSH (H2S/CO)	SO2	PH3	PID
H2S		Quad gas	CI2 Rule 4	NH3	HCN	NO2	quad gas - one step calibration	SO2	PH3 Rule 11	H2S
CO			CI2 Rule 5	NH3	HCN	NO2	quad gas - one step calibration	SO2	PH3 Rule 11	CO
CI2 Bump only				NH3 Rule 9	HCN	NO2 Rules 8 &10	CI2 Rule 6	CI2 Rule 9	PH3Rule 9	CI2
NH3					HCNRule 9	NO2	NH3Rule 6	NH3Rule 9	PH3Rules 9 &10	NH3
HCN						HCN	HCNRule 6	HCNRules 8 &10	PH3Rules 8 &10	HCN
NO2							NO2 Rule 6	NO2	PNO2 Rule 1	NO2
COSHH2S/CO								SO2Rule 6	PH3Rules 10 &11	COSHH2S/CO
SO2									PH3Rules 9 &10	SO2
PH3										PH3
PID

Table 19. Gas Application Rules

Rule #	Gas Type	Apply	Exception(s)
1	PH3	First	Two exceptions: NO2 and O3
2	HCN	First	Three exceptions: PH3 and ClO2
3	NO2	First	Three exceptions: HCN
4	H2S	Last	One exception: PID
5	CO	Last	One exception: PID
6	COSH (H2S/CO)	Last	One exception: PID
7	PID	Last	No exceptions
8	Toxic gas		Both toxic sensors are cross sensitive to each other