ERIS PG -414 User Manual page 8

 visual, audible and vibration alarm if detected gas content reaches limits of
alarm response ALARM 1 and ALARM 2 of each measured gas;
 digital indication of the set alarm limits under the selected measuring channel;
 calculation of STEL values (maximum permissible concentration)* and TWA
(average changeable value of maximum permissible concentration)*;
*optionally;
 event archive record and storage in non-volatile memory;
 PC data exchange via USB interface;
 current time indication;
 indication of device operation faults / errors;
 Energy safety mode - switching over to power standby mode during normal
operation.
Functions of the gas detector available during device setting-up by
software installed on PC are specified in clause 17.
2 Application and functions
8