GasAlertMicro 5/PID/IR
User Manual
26
Span Gas Value STEL Period
The Span gas option increases or 
decreases the gas concentration for 
calibration (must match the gas 
concentration listed on the gas cylinder).
After selecting the sensor, press H to 
scroll to Span gas and press C within 
20 seconds to confirm.
Depending upon the sensor selected, a 
screen similar to A or B displays. Press 
G or H to scroll to the desired value and 
press C within 5 seconds to confirm.
If C is not pressed within 5 seconds to 
confirm the new value, the detector 
retains the previous value and returns to 
the user options menu.
Note
BW recommends that span concentration 
values be set between specific ranges. 
Refer to the Resetting Gas Alarm 
Setpoints.
A
B
The short-term exposure limit (STEL period) option provides 
protection for workers from over exposure to high concentrations 
of gas, and is based on 5-15 minute intervals.
The STEL period option is available for 
every toxic sensor.
After selecting the desired sensor, press 
H to scroll to STEL period and press C 
within 20 seconds to confirm.
The STEL period can be set from 5 to 
15 minutes. Press G or H to scroll to the 
required value, and then press C within 
5 seconds to confirm.
If C is not pressed within 5 seconds to 
confirm the new value, the detector 
retains the previous value and returns to 
the user options menu. 
The detector is shipped with the STEL 
period set to 15 minutes.