RKI Instruments M2A Operator's Manual page 2

WARNING
Read and understand this instruction manual before operating
instrument. Improper use of the gas monitor could result in bodily
harm or death.
Periodic calibration and maintenance of the gas monitor is essential
for proper operation and correct readings. Please calibrate and
maintain this instrument regularly! Frequency of calibration depends
upon the type of use you have and the sensor types. Typical
calibration frequencies for most applications are between 3 and 6
months, but can be required more often or less often based on your
usage.
2 M2A Transmitter Operator's Manual