6
4.
Operation and Instructions
The table below list that Industrial Scientific's minimum frequency recommendations for each program.
These recommendations are based on site data, safe work procedures, industry best practices and
regulatory standards to help ensure worker safety. Users can reduce the frequency of the following
procedures as appropriate according to the safety policy of local government or company, Industrial
Scientific is not responsible for developing security practices and policies.
Procedure
Recommended minimum frequency
Configuration
Before first use, when there is a change in the installed sensor type, and as
otherwise needed.
Calibration
Before first use and 6month interval, depending on use and exposure to
gas and contamination, such as vibration, drop or sensor replacement,
multiple high concentration gas shocks,etc.
Bump test
Prior to each day’s use
.
4.1
Display Overview
The visual test screen depicted right shows all the indicators that
can appear on the display screen. Each indicator is stationary and
appears only when relevant to the task being performed.
Display screens, indicators, and abbreviations
Status indicators
Instrument work normally.
!
Instrument failure.
The unit is in configuration mode.
Alarm indicators
The alarm icon is used in combination with other indicators to communicate a
variety of conditions.
and
▲
High-level gas alarm.
and
▼
Low-level gas alarm.
